//===-- FIROps.td - FIR operation definitions --------------*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Definition of the FIR dialect operations
///
//===----------------------------------------------------------------------===//
#ifndef FORTRAN_DIALECT_FIR_OPS
#define FORTRAN_DIALECT_FIR_OPS
include "mlir/Dialect/Arith/IR/ArithBase.td"
include "mlir/Dialect/Arith/IR/ArithOpsInterfaces.td"
include "mlir/Dialect/LLVMIR/LLVMAttrDefs.td"
include "flang/Optimizer/Dialect/CUF/Attributes/CUFAttr.td"
include "flang/Optimizer/Dialect/FIRDialect.td"
include "flang/Optimizer/Dialect/FIRTypes.td"
include "flang/Optimizer/Dialect/FIRAttr.td"
include "flang/Optimizer/Dialect/FortranVariableInterface.td"
include "flang/Optimizer/Dialect/FirAliasTagOpInterface.td"
include "mlir/IR/BuiltinAttributes.td"
// Base class for FIR operations.
// All operations automatically get a prefix of "fir.".
class fir_Op<string mnemonic, list<Trait> traits>
: Op<FIROpsDialect, mnemonic, traits>;
// Base class for FIR operations that take a single argument
class fir_SimpleOp<string mnemonic, list<Trait> traits>
: fir_Op<mnemonic, traits> {
let assemblyFormat = [{
operands attr-dict `:` functional-type(operands, results)
}];
}
def fir_OneResultOpBuilder : OpBuilder<(ins
"mlir::Type":$resultType,
"mlir::ValueRange":$operands,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes),
[{
if (resultType)
$_state.addTypes(resultType);
$_state.addOperands(operands);
$_state.addAttributes(attributes);
}]>;
// Base class of FIR operations that return 1 result
class fir_OneResultOp<string mnemonic, list<Trait> traits = []> :
fir_Op<mnemonic, traits>, Results<(outs fir_Type:$res)> {
let builders = [fir_OneResultOpBuilder];
}
// Base class of FIR operations that have 1 argument and return 1 result
class fir_SimpleOneResultOp<string mnemonic, list<Trait> traits = []> :
fir_SimpleOp<mnemonic, traits> {
let builders = [fir_OneResultOpBuilder];
}
// Whether a type is a BaseBoxType or a reference to a BaseBoxType.
def IsBoxAddressOrValueTypePred
: CPred<"::fir::isBoxAddressOrValue($_self)">;
def fir_BoxAddressOrValueType : Type<IsBoxAddressOrValueTypePred,
"fir.box or fir.class type or reference">;
//===----------------------------------------------------------------------===//
// Memory SSA operations
//===----------------------------------------------------------------------===//
def fir_AllocaOp : fir_Op<"alloca", [AttrSizedOperandSegments,
MemoryEffects<[MemAlloc<AutomaticAllocationScopeResource>]>]> {
let summary = "allocate storage for a temporary on the stack given a type";
let description = [{
This primitive operation is used to allocate an object on the stack. A
reference to the object of type `!fir.ref<T>` is returned. The returned
object has an undefined/uninitialized state. The allocation can be given
an optional name. The allocation may have a dynamic repetition count
for allocating a sequence of locations for the specified type.
```
%c = ... : i64
%x = fir.alloca i32
%y = fir.alloca !fir.array<8 x i64>
%z = fir.alloca f32, %c
%i = ... : i16
%j = ... : i32
%w = fir.alloca !fir.type<PT(len1:i16, len2:i32)> (%i, %j : i16, i32)
```
Note that in the case of `%z`, a contiguous block of memory is allocated
and its size is a runtime multiple of a 32-bit REAL value.
In the case of `%w`, the arguments `%i` and `%j` are LEN parameters
(`len1`, `len2`) to the type `PT`.
Finally, the operation is undefined if the ssa-value `%c` is negative.
Fortran Semantics:
There is no language mechanism in Fortran to allocate space on the stack
like C's `alloca()` function. Therefore fir.alloca is not control-flow
dependent. However, the lifetime of a stack allocation is often limited to
a small region and a legal implementation may reuse stack storage in other
regions when there is no conflict. For example, take the following code
fragment.
```fortran
CALL foo(1)
CALL foo(2)
CALL foo(3)
```
A legal implementation can allocate a stack slot and initialize it with the
constant `1`, then pass that by reference to foo. Likewise for the second
and third calls to foo, each stack slot being initialized accordingly. It is
also a conforming implementation to reuse the same stack slot for all three
calls, just initializing each in turn. This is possible as the lifetime of
the copy of each constant need not exceed that of the CALL statement.
Indeed, a user would likely expect a good Fortran compiler to perform such
an optimization.
Stack allocations have a maximum lifetime concept: their uses must not
exceed the lifetime of the closest parent operation with the
AutomaticAllocationScope trait, IsIsolatedFromAbove trait, or
LoopLikeOpInterface trait. This restriction is meant to ease the
insertion of stack save and restore operations, and to ease the conversion
of stack allocation into heap allocation.
Until Fortran 2018, procedures defaulted to non-recursive. A legal
implementation could therefore convert stack allocations to global
allocations. Such a conversion effectively adds the SAVE attribute to all
variables.
Some temporary entities (large arrays) probably should not be stack
allocated as stack space can often be limited. A legal implementation can
convert these large stack allocations to heap allocations regardless of
whether the procedure is recursive or not.
The pinned attribute is used to flag fir.alloca operation in a specific
region and avoid them being hoisted in an alloca hoisting pass.
}];
let arguments = (ins
TypeAttr:$in_type,
OptionalAttr<StrAttr>:$uniq_name,
OptionalAttr<StrAttr>:$bindc_name,
UnitAttr:$pinned,
Variadic<AnyIntegerType>:$typeparams,
Variadic<AnyIntegerType>:$shape
);
let results = (outs fir_ReferenceType);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let builders = [
OpBuilder<(ins "mlir::Type":$inType, "llvm::StringRef":$uniqName,
"llvm::StringRef":$bindcName, CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$inType, "llvm::StringRef":$uniqName,
"llvm::StringRef":$bindcName, "bool":$pinned,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$inType, "llvm::StringRef":$uniqName,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$inType, "llvm::StringRef":$uniqName,
"bool":$pinned, CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$inType, "bool":$pinned,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$inType,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>];
let extraClassDeclaration = [{
mlir::Type getAllocatedType();
bool hasLenParams() { return !getTypeparams().empty(); }
bool hasShapeOperands() { return !getShape().empty(); }
bool isDynamic() {return hasLenParams() || hasShapeOperands();}
unsigned numLenParams() { return getTypeparams().size(); }
operand_range getLenParams() { return getTypeparams(); }
unsigned numShapeOperands() { return getShape().size(); }
operand_range getShapeOperands() { return getShape(); }
static mlir::Type getRefTy(mlir::Type ty);
/// Is this an operation that owns the alloca directly made in its region?
static bool ownsNestedAlloca(mlir::Operation* op);
/// Get the parent region that owns this alloca. Nullptr if none can be
/// identified.
mlir::Region* getOwnerRegion();
}];
}
def fir_AllocMemOp : fir_Op<"allocmem",
[MemoryEffects<[MemAlloc<DefaultResource>]>, AttrSizedOperandSegments]> {
let summary = "allocate storage on the heap for an object of a given type";
let description = [{
Creates a heap memory reference suitable for storing a value of the
given type, T. The heap refernce returned has type `!fir.heap<T>`.
The memory object is in an undefined state. `allocmem` operations must
be paired with `freemem` operations to avoid memory leaks.
```
%0 = fir.allocmem !fir.array<10 x f32>
fir.freemem %0 : !fir.heap<!fir.array<10 x f32>>
```
}];
let arguments = (ins
TypeAttr:$in_type,
OptionalAttr<StrAttr>:$uniq_name,
OptionalAttr<StrAttr>:$bindc_name,
Variadic<AnyIntegerType>:$typeparams,
Variadic<AnyIntegerType>:$shape
);
let results = (outs fir_HeapType);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let builders = [
OpBuilder<(ins "mlir::Type":$in_type, "llvm::StringRef":$uniq_name,
"llvm::StringRef":$bindc_name, CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$in_type, "llvm::StringRef":$uniq_name,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Type":$in_type,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::ValueRange", "{}">:$shape,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>];
let extraClassDeclaration = [{
mlir::Type getAllocatedType();
bool hasLenParams() { return !getTypeparams().empty(); }
bool hasShapeOperands() { return !getShape().empty(); }
unsigned numLenParams() { return getTypeparams().size(); }
operand_range getLenParams() { return getTypeparams(); }
unsigned numShapeOperands() { return getShape().size(); }
operand_range getShapeOperands() { return getShape(); }
static mlir::Type getRefTy(mlir::Type ty);
}];
}
def fir_FreeMemOp : fir_Op<"freemem", [MemoryEffects<[MemFree]>]> {
let summary = "free a heap object";
let description = [{
Deallocates a heap memory reference that was allocated by an `allocmem`.
The memory object that is deallocated is placed in an undefined state
after `fir.freemem`. Optimizations may treat the loading of an object
in the undefined state as undefined behavior. This includes aliasing
references, such as the result of an `fir.embox`.
```
%21 = fir.allocmem !fir.type<ZT(p:i32){field:i32}>
...
fir.freemem %21 : !fir.heap<!fir.type<ZT>>
```
}];
let arguments = (ins Arg<fir_HeapType, "", [MemFree]>:$heapref);
let assemblyFormat = "$heapref attr-dict `:` qualified(type($heapref))";
}
def fir_LoadOp : fir_OneResultOp<"load", [FirAliasTagOpInterface]> {
let summary = "load a value from a memory reference";
let description = [{
Load a value from a memory reference into an ssa-value (virtual register).
Produces an immutable ssa-value of the referent type. A memory reference
has type `!fir.ref<T>`, `!fir.heap<T>`, or `!fir.ptr<T>`.
```
%a = fir.alloca i32
%l = fir.load %a : !fir.ref<i32>
```
The ssa-value has an undefined value if the memory reference is undefined
or null.
}];
let arguments = (ins Arg<AnyReferenceLike, "", [MemRead]>:$memref,
OptionalAttr<LLVM_TBAATagArrayAttr>:$tbaa);
let builders = [OpBuilder<(ins "mlir::Value":$refVal)>,
OpBuilder<(ins "mlir::Type":$resTy, "mlir::Value":$refVal)>];
let hasCustomAssemblyFormat = 1;
let extraClassDeclaration = [{
static mlir::ParseResult getElementOf(mlir::Type &ele, mlir::Type ref);
}];
}
def fir_StoreOp : fir_Op<"store", [FirAliasTagOpInterface]> {
let summary = "store an SSA-value to a memory location";
let description = [{
Store an ssa-value (virtual register) to a memory reference. The stored
value must be of the same type as the referent type of the memory
reference.
```
%v = ... : f64
%p = ... : !fir.ptr<f64>
fir.store %v to %p : !fir.ptr<f64>
```
The above store changes the value to which the pointer is pointing and not
the pointer itself. The operation is undefined if the memory reference,
`%p`, is undefined or null.
}];
let arguments = (ins AnyType:$value,
Arg<AnyReferenceLike, "", [MemWrite]>:$memref,
OptionalAttr<LLVM_TBAATagArrayAttr>:$tbaa);
let builders = [OpBuilder<(ins "mlir::Value":$value, "mlir::Value":$memref)>];
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let extraClassDeclaration = [{
static mlir::Type elementType(mlir::Type refType);
}];
}
def fir_SaveResultOp : fir_Op<"save_result", [AttrSizedOperandSegments]> {
let summary = [{
save an array, box, or record function result SSA-value to a memory location
}];
let description = [{
Save the result of a function returning an array, box, or record type value
into a memory location given the shape and LEN parameters of the result.
Function results of type fir.box, fir.array, or fir.rec are abstract values
that require a storage to be manipulated on the caller side. This operation
allows associating such abstract result to a storage. In later lowering of
the function interfaces, this storage might be used to pass the result in
memory.
For arrays, result, it is required to provide the shape of the result. For
character arrays and derived types with LEN parameters, the LEN parameter
values must be provided.
The fir.save_result associated to a function call must immediately follow
the call and be in the same block.
```
%buffer = fir.alloca fir.array<?xf32>, %c100
%shape = fir.shape %c100
%array_result = fir.call @foo() : () -> fir.array<?xf32>
fir.save_result %array_result to %buffer(%shape)
%coor = fir.array_coor %buffer%(%shape), %c5
%fifth_element = fir.load %coor : f32
```
The above fir.save_result allows saving a fir.array function result into
a buffer to later access its 5th element.
}];
let arguments = (ins ArrayOrBoxOrRecord:$value,
Arg<AnyReferenceLike, "", [MemWrite]>:$memref,
Optional<AnyShapeType>:$shape,
Variadic<AnyIntegerType>:$typeparams);
let assemblyFormat = [{
$value `to` $memref (`(` $shape^ `)`)? (`typeparams` $typeparams^)?
attr-dict `:` type(operands)
}];
let hasVerifier = 1;
}
def fir_CharConvertOp : fir_Op<"char_convert", []> {
let summary = [{
Primitive to convert an entity of type CHARACTER from one KIND to a
different KIND.
}];
let description = [{
Copy a CHARACTER (must be in memory) of KIND _k1_ to a CHARACTER (also must
be in memory) of KIND _k2_ where _k1_ != _k2_ and the buffers do not
overlap. This latter restriction is unchecked, as the Fortran language
definition eliminates the overlapping in memory case.
The number of code points copied is specified explicitly as the second
argument. The length of the !fir.char type is ignored.
```
fir.char_convert %1 for %2 to %3 : !fir.ref<!fir.char<1,?>>, i32,
!fir.ref<!fir.char<2,20>>
```
Should future support for encodings other than ASCII be supported, codegen
can generate a call to a runtime helper routine which will map the code
points from UTF-8 to UCS-2, for example. Such remappings may not always
be possible as they may involve the creation of more code points than the
`count` limit. These details are left as future to-dos.
}];
let arguments = (ins
Arg<AnyReferenceLike, "", [MemRead]>:$from,
AnyIntegerType:$count,
Arg<AnyReferenceLike, "", [MemWrite]>:$to
);
let assemblyFormat = [{
$from `for` $count `to` $to attr-dict `:` type(operands)
}];
let hasVerifier = 1;
}
def fir_UndefOp : fir_OneResultOp<"undefined", [NoMemoryEffect]> {
let summary = "explicit undefined value of some type";
let description = [{
Constructs an ssa-value of the specified type with an undefined value.
This operation is typically created internally by the mem2reg conversion
pass. An undefined value can be of any type except `!fir.ref<T>`.
```
%a = fir.undefined !fir.array<10 x !fir.type<T>>
```
The example creates an array shaped ssa-value. The array is rank 1, extent
10, and each element has type `!fir.type<T>`.
}];
let results = (outs AnyType:$intype);
let assemblyFormat = "type($intype) attr-dict";
// Note: we allow `undef : ref<T>` since it is a possible from transformations.
let hasVerifier = 0;
}
def fir_ZeroOp : fir_OneResultOp<"zero_bits", [NoMemoryEffect]> {
let summary = "explicit polymorphic zero value of some type";
let description = [{
Constructs an ssa-value of the specified type with a value of zero for all
bits.
```
%a = fir.zero_bits !fir.box<!fir.array<10 x !fir.type<T>>>
```
The example creates a value of type box where all bits are zero.
}];
let results = (outs AnyType:$intype);
let assemblyFormat = "type($intype) attr-dict";
}
//===----------------------------------------------------------------------===//
// Terminator operations
//===----------------------------------------------------------------------===//
class fir_SwitchTerminatorOp<string mnemonic, list<Trait> traits = []> :
fir_Op<mnemonic, !listconcat(traits, [AttrSizedOperandSegments,
DeclareOpInterfaceMethods<BranchOpInterface>, Terminator])> {
let arguments = (ins
AnyType:$selector,
Variadic<AnyType>:$compareArgs,
Variadic<AnyType>:$targetArgs
);
let results = (outs);
let successors = (successor VariadicSuccessor<AnySuccessor>:$targets);
string extraSwitchClassDeclaration = [{
using Conditions = mlir::Value;
static constexpr llvm::StringRef getCasesAttr() { return "case_tags"; }
// The number of destination conditions that may be tested
unsigned getNumConditions() {
return getCases().size();
}
// The selector is the value being tested to determine the destination
mlir::Value getSelector(llvm::ArrayRef<mlir::Value> operands) {
return operands[0];
}
mlir::Value getSelector(mlir::ValueRange operands) {
return operands.front();
}
// The number of blocks that may be branched to
unsigned getNumDest() { return (*this)->getNumSuccessors(); }
std::optional<mlir::OperandRange> getCompareOperands(unsigned cond);
std::optional<llvm::ArrayRef<mlir::Value>> getCompareOperands(
llvm::ArrayRef<mlir::Value> operands, unsigned cond);
std::optional<mlir::ValueRange> getCompareOperands(
mlir::ValueRange operands, unsigned cond);
std::optional<llvm::ArrayRef<mlir::Value>> getSuccessorOperands(
llvm::ArrayRef<mlir::Value> operands, unsigned cond);
std::optional<mlir::ValueRange> getSuccessorOperands(
mlir::ValueRange operands, unsigned cond);
// Helper function to deal with Optional operand forms
void printSuccessorAtIndex(mlir::OpAsmPrinter &p, unsigned i) {
auto *succ = getSuccessor(i);
auto ops = getSuccessorOperands(i);
p.printSuccessorAndUseList(succ, ops.getForwardedOperands());
}
mlir::ArrayAttr getCases() {
return (*this)->getAttrOfType<mlir::ArrayAttr>(getCasesAttr());
}
unsigned targetOffsetSize();
}];
}
class fir_IntegralSwitchTerminatorOp<string mnemonic,
list<Trait> traits = []> : fir_SwitchTerminatorOp<mnemonic, traits> {
let skipDefaultBuilders = 1;
let builders = [OpBuilder<(ins "mlir::Value":$selector,
"llvm::ArrayRef<int64_t>":$compareOperands,
"llvm::ArrayRef<mlir::Block *>":$destinations,
CArg<"llvm::ArrayRef<mlir::ValueRange>", "{}">:$destOperands,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes),
[{
$_state.addOperands(selector);
llvm::SmallVector<mlir::Attribute> ivalues;
for (auto iv : compareOperands)
ivalues.push_back($_builder.getI64IntegerAttr(iv));
ivalues.push_back($_builder.getUnitAttr());
$_state.addAttribute(getCasesAttr(), $_builder.getArrayAttr(ivalues));
const auto count = destinations.size();
for (auto d : destinations)
$_state.addSuccessors(d);
const auto opCount = destOperands.size();
llvm::SmallVector<int32_t> argOffs;
int32_t sumArgs = 0;
for (std::remove_const_t<decltype(count)> i = 0; i != count; ++i) {
if (i < opCount) {
$_state.addOperands(destOperands[i]);
const auto argSz = destOperands[i].size();
argOffs.push_back(argSz);
sumArgs += argSz;
} else {
argOffs.push_back(0);
}
}
$_state.addAttribute(getOperandSegmentSizeAttr(),
$_builder.getDenseI32ArrayAttr({1, 0, sumArgs}));
$_state.addAttribute(getTargetOffsetAttr(),
$_builder.getDenseI32ArrayAttr(argOffs));
$_state.addAttributes(attributes);
}]
>];
let extraClassDeclaration = extraSwitchClassDeclaration;
}
def fir_SelectOp : fir_IntegralSwitchTerminatorOp<"select"> {
let summary = "a multiway branch";
let description = [{
A multiway branch terminator with similar semantics to C's `switch`
statement. A selector value is matched against a list of constants
of the same type for a match. When a match is found, control is
transferred to the corresponding basic block. A `select` must have
at least one basic block with a corresponding `unit` match, and
that block will be selected when all other conditions fail to match.
```
fir.select %arg:i32 [1, ^bb1(%0 : i32),
2, ^bb2(%2,%arg,%arg2 : i32,i32,i32),
-3, ^bb3(%arg2,%2 : i32,i32),
4, ^bb4(%1 : i32),
unit, ^bb5]
```
}];
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
}
def fir_SelectRankOp : fir_IntegralSwitchTerminatorOp<"select_rank"> {
let summary = "Fortran's SELECT RANK statement";
let description = [{
Similar to `select`, `select_rank` provides a way to express Fortran's
SELECT RANK construct. In this case, the rank of the selector value
is matched against constants of integer type. The structure is the
same as `select`, but `select_rank` determines the rank of the selector
variable at runtime to determine the best match.
```
fir.select_rank %arg:i32 [1, ^bb1(%0 : i32),
2, ^bb2(%2,%arg,%arg2 : i32,i32,i32),
3, ^bb3(%arg2,%2 : i32,i32),
-1, ^bb4(%1 : i32),
unit, ^bb5]
```
}];
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
}
def fir_SelectCaseOp : fir_SwitchTerminatorOp<"select_case"> {
let summary = "Fortran's SELECT CASE statement";
let description = [{
Similar to `select`, `select_case` provides a way to express Fortran's
SELECT CASE construct. In this case, the selector value is matched
against variables (not just constants) and ranges. The structure is
the same as `select`, but `select_case` allows for the expression of
more complex match conditions.
```
fir.select_case %arg : i32 [
#fir.point, %0, ^bb1(%0 : i32),
#fir.lower, %1, ^bb2(%2,%arg,%arg2,%1 : i32,i32,i32,i32),
#fir.interval, %2, %3, ^bb3(%2,%arg2 : i32,i32),
#fir.upper, %arg, ^bb4(%1 : i32),
unit, ^bb5]
```
}];
let skipDefaultBuilders = 1;
let builders = [
OpBuilder<(ins "mlir::Value":$selector,
"llvm::ArrayRef<mlir::Attribute>":$compareAttrs,
"llvm::ArrayRef<mlir::ValueRange>":$cmpOperands,
"llvm::ArrayRef<mlir::Block *>":$destinations,
CArg<"llvm::ArrayRef<mlir::ValueRange>", "{}">:$destOperands,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>,
OpBuilder<(ins "mlir::Value":$selector,
"llvm::ArrayRef<mlir::Attribute>":$compareAttrs,
"llvm::ArrayRef<mlir::Value>":$cmpOpList,
"llvm::ArrayRef<mlir::Block *>":$destinations,
CArg<"llvm::ArrayRef<mlir::ValueRange>", "{}">:$destOperands,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>];
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let extraClassDeclaration = extraSwitchClassDeclaration#[{
unsigned compareOffsetSize();
}];
}
def fir_SelectTypeOp : fir_SwitchTerminatorOp<"select_type"> {
let summary = "Fortran's SELECT TYPE statement";
let description = [{
Similar to `select`, `select_type` provides a way to express Fortran's
SELECT TYPE construct. In this case, the type of the selector value
is matched against a list of type descriptors. The structure is the
same as `select`, but `select_type` determines the type of the selector
variable at runtime to determine the best match.
```
fir.select_type %arg : !fir.box<()> [
#fir.type_is<!fir.type<type1>>, ^bb1(%0 : i32),
#fir.type_is<!fir.type<type2>>, ^bb2(%2 : i32),
#fir.class_is<!fir.type<type3>>, ^bb3(%2 : i32),
#fir.type_is<!fir.type<type4>>, ^bb4(%1,%3 : i32,f32),
unit, ^bb5]
```
}];
let skipDefaultBuilders = 1;
let builders = [OpBuilder<(ins "mlir::Value":$selector,
"llvm::ArrayRef<mlir::Attribute>":$typeOperands,
"llvm::ArrayRef<mlir::Block *>":$destinations,
CArg<"llvm::ArrayRef<mlir::ValueRange>", "{}">:$destOperands,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>];
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let extraClassDeclaration = extraSwitchClassDeclaration;
}
def fir_UnreachableOp : fir_Op<"unreachable", [Terminator]> {
let summary = "the unreachable instruction";
let description = [{
Terminates a basic block with the assertion that the end of the block
will never be reached at runtime. This instruction can be used
immediately after a call to the Fortran runtime to terminate the
program, for example. This instruction corresponds to the LLVM IR
instruction `unreachable`.
```
fir.unreachable
```
}];
let assemblyFormat = [{ attr-dict }];
}
def fir_FirEndOp : fir_Op<"end", [Terminator, NoMemoryEffect]> {
let summary = "the end instruction";
let description = [{
The end terminator is a special terminator used inside various FIR
operations that have regions. End is thus the custom invisible terminator
for these operations. It is implicit and need not appear in the textual
representation.
}];
}
def fir_HasValueOp : fir_Op<"has_value", [Terminator, HasParent<"GlobalOp">]> {
let summary = "terminator for GlobalOp";
let description = [{
The terminator for a GlobalOp with a body.
```
global @variable : tuple<i32, f32> {
%0 = arith.constant 45 : i32
%1 = arith.constant 100.0 : f32
%2 = fir.undefined tuple<i32, f32>
%3 = arith.constant 0 : index
%4 = fir.insert_value %2, %0, %3 : (tuple<i32, f32>, i32, index) -> tuple<i32, f32>
%5 = arith.constant 1 : index
%6 = fir.insert_value %4, %1, %5 : (tuple<i32, f32>, f32, index) -> tuple<i32, f32>
fir.has_value %6 : tuple<i32, f32>
}
```
}];
let arguments = (ins AnyType:$resval);
let assemblyFormat = "$resval attr-dict `:` type($resval)";
}
//===----------------------------------------------------------------------===//
// Operations on !fir.box<T> type objects
//===----------------------------------------------------------------------===//
def fir_EmboxOp : fir_Op<"embox", [NoMemoryEffect, AttrSizedOperandSegments]> {
let summary = "boxes a given reference and (optional) dimension information";
let description = [{
Create a boxed reference value. In Fortran, the implementation can require
extra information about an entity, such as its type, rank, etc. This
auxiliary information is packaged and abstracted as a value with box type
by the calling routine. (In Fortran, these are called descriptors.)
```
%c1 = arith.constant 1 : index
%c10 = arith.constant 10 : index
%5 = ... : !fir.ref<!fir.array<10 x i32>>
%6 = fir.embox %5 : (!fir.ref<!fir.array<10 x i32>>) -> !fir.box<!fir.array<10 x i32>>
```
The descriptor tuple may contain additional implementation-specific
information through the use of additional attributes.
Specifically,
- shape: emboxing an array may require shape information (an array's
lower bounds and extents may not be known until runtime),
- slice: an array section can be described with a slice triple,
- typeparams: for emboxing a derived type with LEN type parameters,
- sourceBox: A box to read information from such as CFI type,
type descriptor or element size to populate the new descriptor.
- accessMap: unused/experimental.
- allocator_idx: specify special allocator to use.
}];
let arguments = (ins
AnyReferenceLike:$memref,
Optional<AnyShapeType>:$shape,
Optional<fir_SliceType>:$slice,
Variadic<AnyIntegerType>:$typeparams,
Optional<fir_ClassType>:$sourceBox,
OptionalAttr<AffineMapAttr>:$accessMap,
OptionalAttr<I32Attr>:$allocator_idx
);
let results = (outs BoxOrClassType);
let builders = [
OpBuilder<(ins "llvm::ArrayRef<mlir::Type>":$resultTypes,
"mlir::Value":$memref, CArg<"mlir::Value", "{}">:$shape,
CArg<"mlir::Value", "{}">:$slice,
CArg<"mlir::ValueRange", "{}">:$typeparams,
CArg<"mlir::Value", "{}">:$sourceBox,
CArg<"mlir::IntegerAttr", "{}">:$allocator_idx),
[{ return build($_builder, $_state, resultTypes, memref, shape, slice,
typeparams, sourceBox, mlir::AffineMapAttr{},
allocator_idx); }]>
];
let assemblyFormat = [{
$memref (`(` $shape^ `)`)? (`[` $slice^ `]`)? (`typeparams` $typeparams^)?
(`source_box` $sourceBox^)? (`map` $accessMap^)? attr-dict `:`
functional-type(operands, results)
}];
let hasVerifier = 1;
let extraClassDeclaration = [{
bool hasLenParams() { return !getTypeparams().empty(); }
unsigned numLenParams() { return getTypeparams().size(); }
unsigned getSourceBoxOperandIndex() {
return 1 + (getShape() ? 1 : 0) + (getSlice() ? 1 : 0)
+ numLenParams();
}
}];
}
def fir_ReboxOp : fir_Op<"rebox", [NoMemoryEffect, AttrSizedOperandSegments]> {
let summary =
"create a box given another box and (optional) dimension information";
let description = [{
Create a new boxed reference value from another box. This is meant to be
used when the taking a reference to part of a boxed value, or to an entire
boxed value with new shape or type information.
The new extra information can be:
- new shape information (new lower bounds, new rank, or new extents.
New rank/extents can only be provided if the original fir.box is
contiguous in all dimension but maybe the first row). The shape
operand must be provided to set new shape information.
- new type (only for derived types). It is possible to set the dynamic
type of the new box to one of the parent types of the input box dynamic
type. Type parameters cannot be changed. This change is reflected in
the requested result type of the new box.
A slice argument can be provided to build a reference to part of a boxed
value. In this case, the shape operand must be absent or be a fir.shift
that can be used to provide a non default origin for the slice.
The following example illustrates creating a fir.box for x(10:33:2)
where x is described by a fir.box and has non default lower bounds,
and then applying a new 2-dimension shape to this fir.box.
```
%0 = fir.slice %c10, %c33, %c2 : (index, index, index) -> !fir.slice<1>
%1 = fir.shift %c0 : (index) -> !fir.shift<1>
%2 = fir.rebox %x(%1) [%0] : (!fir.box<!fir.array<?xf32>>, !fir.shift<1>, !fir.slice<1>) -> !fir.box<!fir.array<?xf32>>
%3 = fir.shape %c3, %c4 : (index, index) -> !fir.shape<2>
%4 = fir.rebox %2(%3) : (!fir.box<!fir.array<?xf32>>, !fir.shape<2>) -> !fir.box<!fir.array<?x?xf32>>
```
}];
let arguments = (ins
BoxOrClassType:$box,
Optional<AnyShapeOrShiftType>:$shape,
Optional<fir_SliceType>:$slice
);
let results = (outs BoxOrClassType);
let assemblyFormat = [{
$box (`(` $shape^ `)`)? (`[` $slice^ `]`)?
attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_ReboxAssumedRankOp : fir_Op<"rebox_assumed_rank",
[DeclareOpInterfaceMethods<MemoryEffectsOpInterface>]> {
let summary = "create an assumed-rank box given another assumed-rank box";
let description = [{
Limited version of fir.rebox for assumed-rank. Only the lower bounds,
attribute, and element type may change.
The input may be a box or a reference to a box, in which case the operation
reads the incoming reference.
Since a fir.shift cannot be built without knowing the rank statically,
lower bound changes are encoded via a LowerBoundModifierAttribute.
Attribute and element type change are encoded in the result type.
Changing the element type is only allowed if the input type is a derived
type that extends the output element type.
Example:
```
fir.rebox_assumed_rank %1 lbs zeroes : (!fir.box<!fir.array<*:f32>>) -> !fir.box<!fir.array<*:f32>>
```
}];
let arguments = (ins
AnyRefOrBoxType:$box,
fir_LowerBoundModifierAttribute:$lbs_modifier
);
let results = (outs BoxOrClassType);
let assemblyFormat = [{
$box `lbs` $lbs_modifier
attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_EmboxCharOp : fir_Op<"emboxchar", [NoMemoryEffect]> {
let summary = "boxes a given CHARACTER reference and its LEN parameter";
let description = [{
Create a boxed CHARACTER value. The CHARACTER type has the LEN type
parameter, the value of which may only be known at runtime. Therefore,
a variable of type CHARACTER has both its data reference as well as a
LEN type parameter.
```fortran
CHARACTER(LEN=10) :: var
```
```
%4 = ... : !fir.ref<!fir.array<10 x !fir.char<1>>>
%5 = arith.constant 10 : i32
%6 = fir.emboxchar %4, %5 : (!fir.ref<!fir.array<10 x !fir.char<1>>>, i32) -> !fir.boxchar<1>
```
In the above `%4` is a memory reference to a buffer of 10 CHARACTER units.
This buffer and its LEN value (10) are wrapped into a pair in `%6`.
}];
let arguments = (ins AnyReferenceLike:$memref, AnyIntegerLike:$len);
let results = (outs fir_BoxCharType);
let assemblyFormat = [{
$memref `,` $len attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_EmboxProcOp : fir_Op<"emboxproc", [NoMemoryEffect]> {
let summary = "boxes a given procedure and optional host context";
let description = [{
Creates an abstract encapsulation of a PROCEDURE POINTER along with an
optional pointer to a host instance context. If the pointer is not to an
internal procedure or the internal procedure does not need a host context
then the form takes only the procedure's symbol.
```
%f = ... : (i32) -> i32
%0 = fir.emboxproc %f : ((i32) -> i32) -> !fir.boxproc<(i32) -> i32>
```
An internal procedure requiring a host instance for correct execution uses
the second form. The closure of the host procedure's state is passed as a
reference to a tuple. It is the responsibility of the host to manage the
context's values accordingly, up to and including inhibiting register
promotion of local values.
```
%4 = ... : !fir.ref<tuple<!fir.ref<i32>, !fir.ref<i32>>>
%g = ... : (i32) -> i32
%5 = fir.emboxproc %g, %4 : ((i32) -> i32, !fir.ref<tuple<!fir.ref<i32>, !fir.ref<i32>>>) -> !fir.boxproc<(i32) -> i32>
```
}];
let arguments = (ins FuncType:$func, Optional<fir_ReferenceType>:$host);
let results = (outs fir_BoxProcType);
let assemblyFormat = [{
$func (`,` $host^)? attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_UnboxCharOp : fir_SimpleOp<"unboxchar", [NoMemoryEffect]> {
let summary = "unbox a boxchar value into a pair value";
let description = [{
Unboxes a value of `boxchar` type into a pair consisting of a memory
reference to the CHARACTER data and the LEN type parameter.
```
%45 = ... : !fir.boxchar<1>
%46:2 = fir.unboxchar %45 : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1>>, i32)
```
}];
let arguments = (ins fir_BoxCharType:$boxchar);
let results = (outs fir_ReferenceType, AnyIntegerLike);
}
def fir_UnboxProcOp : fir_SimpleOp<"unboxproc", [NoMemoryEffect]> {
let summary = "unbox a boxproc value into a pair value";
let description = [{
Unboxes a value of `boxproc` type into a pair consisting of a procedure
pointer and a pointer to a host context.
```
%47 = ... : !fir.boxproc<() -> i32>
%48:2 = fir.unboxproc %47 : (!fir.ref<() -> i32>, !fir.ref<tuple<f32, i32>>)
```
}];
let hasVerifier = 1;
let arguments = (ins fir_BoxProcType:$boxproc);
let results = (outs FunctionType, fir_ReferenceType:$refTuple);
}
def fir_BoxAddrOp : fir_SimpleOneResultOp<"box_addr", [NoMemoryEffect]> {
let summary = "return a memory reference to the boxed value";
let description = [{
This operator is overloaded to work with values of type `box`,
`boxchar`, and `boxproc`. The result for each of these
cases, respectively, is the address of the data, the address of the
`CHARACTER` data, and the address of the procedure.
```
%51 = fir.box_addr %box : (!fir.box<f64>) -> !fir.ref<f64>
%52 = fir.box_addr %boxchar : (!fir.boxchar<1>) -> !fir.ref<!fir.char<1>>
%53 = fir.box_addr %boxproc : (!fir.boxproc<!P>) -> !P
```
}];
let arguments = (ins AnyBoxLike:$val);
let results = (outs AnyCodeOrDataRefLike);
let hasFolder = 1;
let builders = [OpBuilder<(ins "mlir::Value":$val)>];
}
def fir_BoxCharLenOp : fir_SimpleOp<"boxchar_len", [NoMemoryEffect]> {
let summary = "return the LEN type parameter from a boxchar value";
let description = [{
Extracts the LEN type parameter from a `boxchar` value.
```
%45 = ... : !boxchar<1> // CHARACTER(20)
%59 = fir.boxchar_len %45 : (!fir.boxchar<1>) -> i64 // len=20
```
}];
let arguments = (ins fir_BoxCharType:$val);
let results = (outs AnyIntegerLike);
let hasFolder = 1;
}
def fir_BoxDimsOp : fir_Op<"box_dims", [NoMemoryEffect]> {
let summary = "return the dynamic dimension information for the boxed value";
let description = [{
Returns the triple of lower bound, extent, and stride for `dim` dimension
of `val`, which must have a `box` type. The dimensions are enumerated from
left to right from 0 to rank-1. This operation has undefined behavior if
`dim` is out of bounds.
```
%c1 = arith.constant 0 : i32
%52:3 = fir.box_dims %40, %c1 : (!fir.box<!fir.array<*:f64>>, i32) -> (index, index, index)
```
The above is a request to return the left most row (at index 0) triple from
the box. The triple will be the lower bound, extent, and byte-stride, which
are the values encoded in a standard descriptor.
}];
let arguments = (ins BoxOrClassType:$val, AnyIntegerLike:$dim);
let results = (outs Index, Index, Index);
let assemblyFormat = [{
$val `,` $dim attr-dict `:` functional-type(operands, results)
}];
let extraClassDeclaration = [{
mlir::Type getTupleType();
mlir::Value getLowerBound() {return getResult(0);};
mlir::Value getExtent() {return getResult(1);};
mlir::Value getByteStride() {return getResult(2);};
}];
}
def fir_BoxEleSizeOp : fir_SimpleOneResultOp<"box_elesize", [NoMemoryEffect]> {
let summary = "return the size of an element of the boxed value";
let description = [{
Returns the size of an element in an entity of `box` type. This size may
not be known until runtime.
```
%53 = fir.box_elesize %40 : (!fir.box<f32>) -> i32 // size=4
%54 = fir.box_elesize %40 : (!fir.box<!fir.array<*:f32>>) -> i32
```
In the above example, `%53` may box an array of REAL values while `%54`
must box an array of REAL values (with dynamic rank and extent).
}];
let arguments = (ins BoxOrClassType:$val);
let results = (outs AnyIntegerLike);
}
def fir_BoxTypeCodeOp : fir_SimpleOneResultOp<"box_typecode", [NoMemoryEffect]>
{
let summary = "return the type code the boxed value";
let description = [{
Returns the descriptor type code of an entity of `box` type.
```
%1 = fir.box_typecode %0 : (!fir.box<T>) -> i32
```
}];
let arguments = (ins BoxOrClassType:$box);
let results = (outs AnyIntegerLike);
}
def fir_BoxIsAllocOp : fir_SimpleOp<"box_isalloc", [NoMemoryEffect]> {
let summary = "is the boxed value an ALLOCATABLE?";
let description = [{
Determine if the boxed value was from an ALLOCATABLE entity. This will
return true if the originating box value was from a `fir.embox` op
with a mem-ref value that had the type !fir.heap<T>.
```
%r = ... : !fir.heap<i64>
%b = fir.embox %r : (!fir.heap<i64>) -> !fir.box<i64>
%a = fir.box_isalloc %b : (!fir.box<i64>) -> i1 // true
```
The canonical descriptor implementation will carry a flag to record if the
variable is an `ALLOCATABLE`.
}];
let arguments = (ins fir_BoxType:$val);
let results = (outs BoolLike);
}
def fir_BoxIsArrayOp : fir_SimpleOp<"box_isarray", [NoMemoryEffect]> {
let summary = "is the boxed value an array?";
let description = [{
Determine if the boxed value has a positive (> 0) rank. This will return
true if the originating box value was from a fir.embox with a memory
reference value that had the type !fir.array<T> and/or a shape argument.
```
%r = ... : !fir.ref<i64>
%c_100 = arith.constant 100 : index
%d = fir.shape %c_100 : (index) -> !fir.shape<1>
%b = fir.embox %r(%d) : (!fir.ref<i64>, !fir.shape<1>) -> !fir.box<i64>
%a = fir.box_isarray %b : (!fir.box<i64>) -> i1 // true
```
}];
let arguments = (ins fir_BoxType:$val);
let results = (outs BoolLike);
}
def fir_IsAssumedSizeOp : fir_SimpleOp<"is_assumed_size", [NoMemoryEffect]> {
let summary = "detect if a boxed value is an assumed-size array";
let description = [{
Fir box SSA values may describe assumed-size arrays. This operation
allows detecting this, even for assumed-rank box.
```
%a = fir.is_assumed_size %b : (!fir.box<!fir.array<*:f64>>) -> i1
```
}];
let arguments = (ins BoxOrClassType:$val);
let results = (outs BoolLike);
}
def fir_BoxIsPtrOp : fir_SimpleOp<"box_isptr", [NoMemoryEffect]> {
let summary = "is the boxed value a POINTER?";
let description = [{
Determine if the boxed value was from a POINTER entity.
```
%p = ... : !fir.ptr<i64>
%b = fir.embox %p : (!fir.ptr<i64>) -> !fir.box<i64>
%a = fir.box_isptr %b : (!fir.box<i64>) -> i1 // true
```
}];
let arguments = (ins fir_BoxType:$val);
let results = (outs BoolLike);
}
def fir_BoxProcHostOp : fir_SimpleOp<"boxproc_host", [NoMemoryEffect]> {
let summary = "returns the host instance pointer (or null)";
let description = [{
Extract the host context pointer from a boxproc value.
```
%8 = ... : !fir.boxproc<(!fir.ref<!fir.type<T>>) -> i32>
%9 = fir.boxproc_host %8 : (!fir.boxproc<(!fir.ref<!fir.type<T>>) -> i32>) -> !fir.ref<tuple<i32, i32>>
```
In the example, the reference to the closure over the host procedure's
variables is returned. This allows an internal procedure to access the
host's variables. It is up to lowering to determine the contract between
the host and the internal procedure.
}];
let arguments = (ins fir_BoxProcType:$val);
let results = (outs fir_ReferenceType);
}
def fir_BoxRankOp : fir_SimpleOneResultOp<"box_rank",
[DeclareOpInterfaceMethods<MemoryEffectsOpInterface>]> {
let summary = "return the number of dimensions for the boxed value";
let description = [{
Return the rank of a value of `box` type. If the value is scalar, the
rank is 0.
```
%57 = fir.box_rank %40 : (!fir.box<!fir.array<*:f64>>) -> i32
%58 = fir.box_rank %41 : (!fir.box<f64>) -> i32
```
The example `%57` shows how one would determine the rank of an array that
has deferred rank at runtime. This rank should be at least 1. In %58, the
descriptor may be either an array or a scalar, so the value is nonnegative.
}];
let arguments = (ins fir_BoxAddressOrValueType:$box);
let results = (outs AnyIntegerType);
}
def fir_BoxTypeDescOp : fir_SimpleOneResultOp<"box_tdesc", [NoMemoryEffect]> {
let summary = "return the type descriptor for the boxed value";
let description = [{
Return the opaque type descriptor of a value of `box` type. A type
descriptor is an implementation defined value that fully describes a type
to the Fortran runtime.
```
%7 = fir.box_tdesc %41 : (!fir.box<f64>) -> !fir.tdesc<f64>
```
}];
let arguments = (ins BoxOrClassType:$box);
let results = (outs fir_TypeDescType);
}
//===----------------------------------------------------------------------===//
// Array value operations
//===----------------------------------------------------------------------===//
// Array value operations are used to capture the semantics of
// Fortran's array expressions in FIR. An abstract array expression is
// evaluated in the following way.
//
// 1. Determination of the iteration space under which the assignment
// expression is to be evaluated. The iteration space may be implicit
// (from the shape of the result array) or explicit (defined by the user).
// 2. If there are masking expressions, evaluate (and cache) the
// masking expression for the iteration space (from 1).
// 3. The rhs of the assignment is evaluated for the iteration space. If
// masking expressions were present then the rhs is only evaluated where
// the mask was computed to be true. The entire rhs is completely evaluated
// before any results are stored to the lhs.
// 4. Each of the result values computed in the previous step are merged back
// to the lhs array's storage.
//
// The model (in pseudo-code) is thus:
//
// !- Load the arrays in the expression
// %10 = array_load A
// %11 = array_load B
// !- optional: compute mask values
// %masks = allocmem array<??xlogical>
// do_loop_nest %i = ... {
// %masks[i] = ...
// }
// !- Compute every element value "A = B ..."
// do_loop_nest %i = ... {
// if (%masks[i]) {
// array_fetch %11, ... !- B(...)
// %20 = ... !- element-by-element computation
// array_update %10, %20, ... !- A(...) = ...
// }
// }
// !- Merge the new and old values into the memory for "A"
// array_merge_store <updated A> to <A's address>
def fir_ArrayLoadOp : fir_Op<"array_load", [AttrSizedOperandSegments]> {
let summary = "Load an array as a value.";
let description = [{
This operation taken with array_merge_store captures Fortran's
copy-in/copy-out semantics. One way to think of this is that array_load
creates a snapshot copy of the entire array. This copy can then be used
as the "original value" of the array while the array's new value is
computed. The array_merge_store operation is the copy-out semantics, which
merge the updates with the original array value to produce the final array
result. This abstracts the copy operations as opposed to always creating
copies or requiring dependence analysis be performed on the syntax trees
and before lowering to the IR.
Load an entire array as a single SSA value.
```fortran
real :: a(o:n,p:m)
...
... = ... a ...
```
One can use `fir.array_load` to produce an ssa-value that captures an
immutable value of the entire array `a`, as in the Fortran array expression
shown above. Subsequent changes to the memory containing the array do not
alter its composite value. This operation lets one load an array as a
value while applying a runtime shape, shift, or slice to the memory
reference, and its semantics guarantee immutability.
```
%s = fir.shape_shift %o, %n, %p, %m : (index, index, index, index) -> !fir.shapeshift<2>
// load the entire array 'a'
%v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shapeshift<2>) -> !fir.array<?x?xf32>
// a fir.store here into array %a does not change %v
```
}];
let arguments = (ins
Arg<AnyRefOrBox, "", [MemRead]>:$memref,
Optional<AnyShapeOrShiftType>:$shape,
Optional<fir_SliceType>:$slice,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs fir_SequenceType);
let assemblyFormat = [{
$memref (`(`$shape^`)`)? (`[`$slice^`]`)? (`typeparams` $typeparams^)?
attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
let extraClassDeclaration = [{
std::vector<mlir::Value> getExtents();
}];
}
def fir_ArrayFetchOp : fir_Op<"array_fetch", [AttrSizedOperandSegments,
NoMemoryEffect]> {
let summary = "Fetch the value of an element of an array value";
let description = [{
Fetch the value of an element in an array value.
```fortran
real :: a(n,m)
...
... a ...
... a(r,s+1) ...
```
One can use `fir.array_fetch` to fetch the (implied) value of `a(i,j)` in
an array expression as shown above. It can also be used to extract the
element `a(r,s+1)` in the second expression.
```
%s = fir.shape %n, %m : (index, index) -> !fir.shape<2>
// load the entire array 'a'
%v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.array<?x?xf32>
// fetch the value of one of the array value's elements
%1 = fir.array_fetch %v, %i, %j : (!fir.array<?x?xf32>, index, index) -> f32
```
It is only possible to use `array_fetch` on an `array_load` result value.
}];
let arguments = (ins
fir_SequenceType:$sequence,
Variadic<AnyCoordinateType>:$indices,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs AnyType:$element);
let assemblyFormat = [{
$sequence `,` $indices (`typeparams` $typeparams^)? attr-dict `:`
functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_ArrayUpdateOp : fir_Op<"array_update", [AttrSizedOperandSegments,
NoMemoryEffect]> {
let summary = "Update the value of an element of an array value";
let description = [{
Updates the value of an element in an array value. A new array value is
returned where all element values of the input array are identical except
for the selected element which is the value passed in the update.
```fortran
real :: a(n,m)
...
a = ...
```
One can use `fir.array_update` to update the (implied) value of `a(i,j)`
in an array expression as shown above.
```
%s = fir.shape %n, %m : (index, index) -> !fir.shape<2>
// load the entire array 'a'
%v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.array<?x?xf32>
// update the value of one of the array value's elements
// %r_{ij} = %f if (i,j) = (%i,%j), %v_{ij} otherwise
%r = fir.array_update %v, %f, %i, %j : (!fir.array<?x?xf32>, f32, index, index) -> !fir.array<?x?xf32>
fir.array_merge_store %v, %r to %a : !fir.ref<!fir.array<?x?xf32>>
```
An array value update behaves as if a mapping function from the indices
to the new value has been added, replacing the previous mapping. These
mappings can be added to the ssa-value, but will not be materialized in
memory until the `fir.array_merge_store` is performed.
}];
let arguments = (ins
fir_SequenceType:$sequence,
AnyType:$merge,
Variadic<AnyCoordinateType>:$indices,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs fir_SequenceType);
let assemblyFormat = [{
$sequence `,` $merge `,` $indices (`typeparams` $typeparams^)? attr-dict
`:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_ArrayModifyOp : fir_Op<"array_modify", [AttrSizedOperandSegments,
NoMemoryEffect]> {
let summary = "Get an address for an array value to modify it.";
let description = [{
Modify the value of an element in an array value through actions done
on the returned address. A new array value is also
returned where all element values of the input array are identical except
for the selected element which is the value after the modification done
on the element address.
```fortran
real :: a(n)
...
! Elemental user defined assignment from type(SomeType) to real.
a = value_of_some_type
```
One can use `fir.array_modify` to update the (implied) value of `a(i)`
in an array expression as shown above.
```
%s = fir.shape %n : (index) -> !fir.shape<1>
// Load the entire array 'a'.
%v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.array<?xf32>
// Update the value of one of the array value's elements with a user
// defined assignment from %rhs.
%new = fir.do_loop %i = ... (%inner = %v) {
%rhs = ...
%addr, %r = fir.array_modify %inner, %i : (!fir.array<?xf32>, index) -> (fir.ref<f32>, !fir.array<?xf32>)
fir.call @user_def_assign(%addr, %rhs) (fir.ref<f32>, fir.ref<!fir.type<SomeType>>) -> ()
fir.result %r : !fir.ref<!fir.array<?xf32>>
}
fir.array_merge_store %v, %new to %a : !fir.ref<!fir.array<?xf32>>
```
An array value modification behaves as if a mapping function from the indices
to the new value has been added, replacing the previous mapping. These
mappings can be added to the ssa-value, but will not be materialized in
memory until the `fir.array_merge_store` is performed.
}];
let arguments = (ins
fir_SequenceType:$sequence,
Variadic<AnyCoordinateType>:$indices,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs fir_ReferenceType, fir_SequenceType);
let assemblyFormat = [{
$sequence `,` $indices (`typeparams` $typeparams^)? attr-dict
`:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_ArrayAccessOp : fir_Op<"array_access", [AttrSizedOperandSegments,
NoMemoryEffect]> {
let summary = "Fetch the reference of an element of an array value";
let description = [{
The `array_access` provides a reference to a single element from an array
value. This is *not* a view in the immutable array, otherwise it couldn't
be stored to. It can be see as a logical copy of the element and its
position in the array. This reference can be written to and modified without
changing the original array.
The `array_access` operation is used to fetch the memory reference of an
element in an array value.
```fortran
real :: a(n,m)
...
... a ...
... a(r,s+1) ...
```
One can use `fir.array_access` to recover the implied memory reference to
the element `a(i,j)` in an array expression `a` as shown above. It can also
be used to recover the reference element `a(r,s+1)` in the second
expression.
```
%s = fir.shape %n, %m : (index, index) -> !fir.shape<2>
// load the entire array 'a'
%v = fir.array_load %a(%s) : (!fir.ref<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.array<?x?xf32>
// fetch the value of one of the array value's elements
%1 = fir.array_access %v, %i, %j : (!fir.array<?x?xf32>, index, index) -> !fir.ref<f32>
```
It is only possible to use `array_access` on an `array_load` result value or
a value that can be trace back transitively to an `array_load` as the
dominating source. Other array operation such as `array_amend` can be in
between.
TODO: The above restriction is not enforced. The design of the operation
might need to be revisited to avoid such restrictions.
More information about `array_access` and other array operations can be
found in flang/docs/FIRArrayOperations.md.
}];
let arguments = (ins
fir_SequenceType:$sequence,
Variadic<AnyCoordinateType>:$indices,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs fir_ReferenceType:$element);
let assemblyFormat = [{
$sequence `,` $indices (`typeparams` $typeparams^)? attr-dict `:`
functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_ArrayAmendOp : fir_Op<"array_amend", [NoMemoryEffect]> {
let summary = "Mark an array value as having been changed by reference.";
let description = [{
The `array_amend` operation marks an array value as having been changed via
a reference obtained by an `array_access`. It acts as a logical transaction
log that is used to merge the final result back with an `array_merge_store`
operation.
```
// fetch the value of one of the array value's elements
%1 = fir.array_access %v, %i, %j : (!fir.array<?x?xT>, index, index) -> !fir.ref<T>
// modify the element by storing data using %1 as a reference
%2 = ... %1 ...
// mark the array value
%new_v = fir.array_amend %v, %2 : (!fir.array<?x?xT>, !fir.ref<T>) -> !fir.array<?x?xT>
```
More information about `array_amend` and other array operations can be
found in flang/docs/FIRArrayOperations.md.
}];
let arguments = (ins
fir_SequenceType:$sequence,
fir_ReferenceType:$memref
);
let results = (outs fir_SequenceType);
let assemblyFormat = [{
$sequence `,` $memref attr-dict `:` functional-type(operands, results)
}];
}
def fir_ArrayMergeStoreOp : fir_Op<"array_merge_store",
[AttrSizedOperandSegments]> {
let summary = "Store merged array value to memory.";
let description = [{
Store a merged array value to memory.
```fortran
real :: a(n,m)
...
a = ...
```
One can use `fir.array_merge_store` to merge/copy the value of `a` in an
array expression as shown above.
```
%v = fir.array_load %a(%shape) : ...
%r = fir.array_update %v, %f, %i, %j : (!fir.array<?x?xf32>, f32, index, index) -> !fir.array<?x?xf32>
fir.array_merge_store %v, %r to %a : !fir.ref<!fir.array<?x?xf32>>
```
This operation merges the original loaded array value, `%v`, with the
chained updates, `%r`, and stores the result to the array at address, `%a`.
}];
let arguments = (ins
fir_SequenceType:$original,
fir_SequenceType:$sequence,
Arg<AnyRefOrBox, "", [MemWrite]>:$memref,
Optional<fir_SliceType>:$slice,
Variadic<AnyIntegerType>:$typeparams
);
let assemblyFormat = [{
$original `,` $sequence `to` $memref (`[` $slice^ `]`)? (`typeparams`
$typeparams^)? attr-dict `:` type(operands)
}];
let hasVerifier = 1;
}
//===----------------------------------------------------------------------===//
// Record and array type operations
//===----------------------------------------------------------------------===//
def fir_ArrayCoorOp : fir_Op<"array_coor",
[NoMemoryEffect, AttrSizedOperandSegments]> {
let summary = "Find the coordinate of an element of an array";
let description = [{
Compute the location of an element in an array when the shape of the
array is only known at runtime.
This operation is intended to capture all the runtime values needed to
compute the address of an array reference in a single high-level op. Given
the following Fortran input:
```fortran
real :: a(n,m)
...
... a(i,j) ...
```
One can use `fir.array_coor` to determine the address of `a(i,j)`.
```
%s = fir.shape %n, %m : (index, index) -> !fir.shape<2>
%1 = fir.array_coor %a(%s) %i, %j : (!fir.ref<!fir.array<?x?xf32>>, !fir.shape<2>, index, index) -> !fir.ref<f32>
```
}];
let arguments = (ins
AnyRefOrBox:$memref,
Optional<AnyShapeOrShiftType>:$shape,
Optional<fir_SliceType>:$slice,
Variadic<AnyCoordinateType>:$indices,
Variadic<AnyIntegerType>:$typeparams
);
let results = (outs fir_ReferenceType);
let assemblyFormat = [{
$memref (`(`$shape^`)`)? (`[`$slice^`]`)? $indices (`typeparams`
$typeparams^)? attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
let hasCanonicalizer = 1;
}
def fir_CoordinateOp : fir_Op<"coordinate_of", [NoMemoryEffect]> {
let summary = "Finds the coordinate (location) of a value in memory";
let description = [{
Compute the internal coordinate address starting from a boxed value or
unboxed memory reference. Returns a memory reference. When computing the
coordinate of an array element, the rank of the array must be known and
the number of indexing expressions must not exceed the rank of the array.
This operation will apply the access map from a boxed value implicitly.
Unlike LLVM's GEP instruction, one cannot stride over the outermost
reference; therefore, the leading 0 index must be omitted.
```
%i = ... : index
%h = ... : !fir.heap<!fir.array<100 x f32>>
%p = fir.coordinate_of %h, %i : (!fir.heap<!fir.array<100 x f32>>, index) -> !fir.ref<f32>
```
In the example, `%p` will be a pointer to the `%i`-th f32 value in the
array `%h`.
}];
let arguments = (ins
AnyRefOrBox:$ref,
Variadic<AnyCoordinateType>:$coor,
TypeAttr:$baseType
);
let results = (outs RefOrLLVMPtr);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let builders = [
OpBuilder<(ins "mlir::Type":$resultType,
"mlir::Value":$ref, "mlir::ValueRange":$coor),
[{ return build($_builder, $_state, resultType, ref, coor,
mlir::TypeAttr::get(ref.getType())); }]>,
];
}
def fir_ExtractValueOp : fir_OneResultOp<"extract_value", [NoMemoryEffect]> {
let summary = "Extract a value from an aggregate SSA-value";
let description = [{
Extract a value from an entity with a type composed of tuples, arrays,
and/or derived types. Returns the value from entity with the type of the
specified component. Cannot be used on values of `!fir.box` type.
It can also be used to access complex parts and elements of a character
string.
Note that the entity ssa-value must be of compile-time known size in order
to use this operation.
```
%f = fir.field_index field, !fir.type<X{field:i32}>
%s = ... : !fir.type<X>
%v = fir.extract_value %s, %f : (!fir.type<X>, !fir.field) -> i32
```
}];
let arguments = (ins
AnyCompositeLike:$adt,
ArrayAttr:$coor
);
let assemblyFormat = [{
$adt `,` $coor attr-dict `:` functional-type(operands, results)
}];
}
def fir_FieldIndexOp : fir_OneResultOp<"field_index", [NoMemoryEffect]> {
let summary = "create a field index value from a field identifier";
let description = [{
Generate a field (offset) value from an identifier. Field values may be
lowered into exact offsets when the layout of a Fortran derived type is
known at compile-time. The type of a field value is `!fir.field` and
these values can be used with the `fir.coordinate_of`, `fir.extract_value`,
or `fir.insert_value` instructions to compute (abstract) addresses of
subobjects.
```
%f = fir.field_index field, !fir.type<X{field:i32}>
```
}];
let arguments = (ins
StrAttr:$field_id,
TypeAttr:$on_type,
Variadic<AnyIntegerType>:$typeparams
);
let hasCustomAssemblyFormat = 1;
let builders = [OpBuilder<(ins "llvm::StringRef":$fieldName,
"mlir::Type":$recTy, CArg<"mlir::ValueRange","{}">:$operands)>];
let extraClassDeclaration = [{
static constexpr llvm::StringRef getFieldAttrName() { return "field_id"; }
static constexpr llvm::StringRef getTypeAttrName() { return "on_type"; }
llvm::StringRef getFieldName() { return getFieldId(); }
llvm::SmallVector<mlir::Attribute> getAttributes();
}];
}
def fir_ShapeOp : fir_Op<"shape", [NoMemoryEffect]> {
let summary = "generate an abstract shape vector of type `!fir.shape`";
let description = [{
The arguments are an ordered list of integral type values that define the
runtime extent of each dimension of an array. The shape information is
given in the same row-to-column order as Fortran. This abstract shape value
must be applied to a reified object, so all shape information must be
specified. The extent must be nonnegative.
```
%d = fir.shape %row_sz, %col_sz : (index, index) -> !fir.shape<2>
```
}];
let arguments = (ins Variadic<AnyIntegerType>:$extents);
let results = (outs fir_ShapeType);
let assemblyFormat = [{
operands attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
let builders = [OpBuilder<(ins "mlir::ValueRange":$extents)>];
}
def fir_ShapeShiftOp : fir_Op<"shape_shift", [NoMemoryEffect]> {
let summary = [{
generate an abstract shape and shift vector of type `!fir.shapeshift`
}];
let description = [{
The arguments are an ordered list of integral type values that is a multiple
of 2 in length. Each such pair is defined as: the lower bound and the
extent for that dimension. The shifted shape information is given in the
same row-to-column order as Fortran. This abstract shifted shape value must
be applied to a reified object, so all shifted shape information must be
specified. The extent must be nonnegative.
```
%d = fir.shape_shift %lo, %extent : (index, index) -> !fir.shapeshift<1>
```
}];
let arguments = (ins Variadic<AnyIntegerType>:$pairs);
let results = (outs fir_ShapeShiftType);
let assemblyFormat = [{
operands attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
let extraClassDeclaration = [{
// Logically unzip the origins from the extent values.
std::vector<mlir::Value> getOrigins() {
std::vector<mlir::Value> result;
for (auto i : llvm::enumerate(getPairs()))
if (!(i.index() & 1))
result.push_back(i.value());
return result;
}
// Logically unzip the extents from the origin values.
std::vector<mlir::Value> getExtents() {
std::vector<mlir::Value> result;
for (auto i : llvm::enumerate(getPairs()))
if (i.index() & 1)
result.push_back(i.value());
return result;
}
}];
}
def fir_ShiftOp : fir_Op<"shift", [NoMemoryEffect]> {
let summary = "generate an abstract shift vector of type `!fir.shift`";
let description = [{
The arguments are an ordered list of integral type values that define the
runtime lower bound of each dimension of an array. The shape information is
given in the same row-to-column order as Fortran. This abstract shift value
must be applied to a reified object, so all shift information must be
specified.
```
%d = fir.shift %row_lb, %col_lb : (index, index) -> !fir.shift<2>
```
}];
let arguments = (ins Variadic<AnyIntegerType>:$origins);
let results = (outs fir_ShiftType);
let assemblyFormat = [{
operands attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_SliceOp : fir_Op<"slice", [NoMemoryEffect, AttrSizedOperandSegments]> {
let summary = "generate an abstract slice vector of type `!fir.slice`";
let description = [{
The array slicing arguments are an ordered list of integral type values
that must be a multiple of 3 in length. Each such triple is defined as:
the lower bound, the upper bound, and the stride for that dimension, as in
Fortran syntax. Both bounds are inclusive. The array slice information is
given in the same row-to-column order as Fortran. This abstract slice value
must be applied to a reified object, so all slice information must be
specified. The extent must be nonnegative and the stride must not be zero.
```
%d = fir.slice %lo, %hi, %step : (index, index, index) -> !fir.slice<1>
```
To support generalized slicing of Fortran's dynamic derived types, a slice
op can be given a component path (narrowing from the product type of the
original array to the specific elemental type of the sliced projection).
```
%fld = fir.field_index component, !fir.type<t{...component:ct...}>
%d = fir.slice %lo, %hi, %step path %fld :
(index, index, index, !fir.field) -> !fir.slice<1>
```
Projections of `!fir.char` type can be further narrowed to invariant
substrings.
```
%d = fir.slice %lo, %hi, %step substr %offset, %width :
(index, index, index, index, index) -> !fir.slice<1>
```
}];
let arguments = (ins
Variadic<AnyIntegerType>:$triples,
Variadic<AnyComponentType>:$fields,
Variadic<AnyIntegerType>:$substr
);
let results = (outs fir_SliceType);
let assemblyFormat = [{
$triples (`path` $fields^)? (`substr` $substr^)? attr-dict `:`
functional-type(operands, results)
}];
let builders = [
OpBuilder<(ins "mlir::ValueRange":$triples,
CArg<"mlir::ValueRange", "std::nullopt">:$fields,
CArg<"mlir::ValueRange", "std::nullopt">:$substr)>
];
let hasVerifier = 1;
let extraClassDeclaration = [{
unsigned getOutRank() { return getOutputRank(getTriples()); }
static unsigned getOutputRank(mlir::ValueRange triples);
}];
}
def fir_InsertValueOp : fir_OneResultOp<"insert_value", [NoMemoryEffect]> {
let summary = "insert a new sub-value into a copy of an existing aggregate";
let description = [{
Insert a value into an entity with a type composed of tuples, arrays,
and/or derived types. Returns a new ssa-value with the same type as the
original entity. Cannot be used on values of `!fir.box` type.
It can also be used to set complex parts and elements of a character
string.
Note that the entity ssa-value must be of compile-time known size in order
to use this operation.
```
%a = ... : !fir.array<10xtuple<i32, f32>>
%f = ... : f32
%o = ... : i32
%c = arith.constant 1 : i32
%b = fir.insert_value %a, %f, %o, %c : (!fir.array<10x20xtuple<i32, f32>>, f32, i32, i32) -> !fir.array<10x20xtuple<i32, f32>>
```
}];
let arguments = (ins AnyCompositeLike:$adt, AnyType:$val, ArrayAttr:$coor);
let results = (outs AnyCompositeLike);
let assemblyFormat = [{
$adt `,` $val `,` $coor attr-dict `:` functional-type(operands, results)
}];
let hasCanonicalizer = 1;
}
def fir_InsertOnRangeOp : fir_OneResultOp<"insert_on_range", [NoMemoryEffect]> {
let summary = "insert sub-value into a range on an existing sequence";
let description = [{
Insert copies of a value into an entity with an array type of constant shape
and size.
Returns a new ssa-value with the same type as the original entity.
The values are inserted at a contiguous range of indices in Fortran
row-to-column element order as specified by lower and upper bound
coordinates.
```
%a = fir.undefined !fir.array<10x10xf32>
%c = arith.constant 3.0 : f32
%1 = fir.insert_on_range %a, %c from (0, 0) to (7, 2) : (!fir.array<10x10xf32>, f32) -> !fir.array<10x10xf32>
```
The first 28 elements of %1, with coordinates from (0,0) to (7,2), have
the value 3.0.
}];
let arguments = (ins fir_SequenceType:$seq, AnyType:$val, IndexElementsAttr:$coor);
let results = (outs fir_SequenceType);
let assemblyFormat = [{
$seq `,` $val custom<CustomRangeSubscript>($coor) attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_LenParamIndexOp : fir_OneResultOp<"len_param_index", [NoMemoryEffect]> {
let summary =
"create a field index value from a LEN type parameter identifier";
let description = [{
Generate a LEN parameter (offset) value from a LEN parameter identifier.
The type of a LEN parameter value is `!fir.len` and these values can be
used with the `fir.coordinate_of` instructions to compute (abstract)
addresses of LEN parameters.
```
%e = fir.len_param_index len1, !fir.type<X(len1:i32)>
%p = ... : !fir.box<!fir.type<X>>
%q = fir.coordinate_of %p, %e : (!fir.box<!fir.type<X>>, !fir.len) -> !fir.ref<i32>
```
}];
let arguments = (ins
StrAttr:$field_id,
TypeAttr:$on_type,
Variadic<AnyIntegerType>:$typeparams
);
let hasCustomAssemblyFormat = 1;
let builders = [OpBuilder<(ins "llvm::StringRef":$fieldName,
"mlir::Type":$recTy, CArg<"mlir::ValueRange","{}">:$operands)>];
let extraClassDeclaration = [{
static constexpr llvm::StringRef getFieldAttrName() { return "field_id"; }
static constexpr llvm::StringRef getTypeAttrName() { return "on_type"; }
llvm::StringRef getParamName() { return getFieldId(); }
llvm::SmallVector<mlir::Attribute> getAttributes();
}];
}
//===----------------------------------------------------------------------===//
// Fortran loops
//===----------------------------------------------------------------------===//
def fir_ResultOp : fir_Op<"result",
[NoMemoryEffect, ReturnLike, Terminator,
ParentOneOf<["IfOp", "DoLoopOp", "IterWhileOp"]>]> {
let summary = "special terminator for use in fir region operations";
let description = [{
Result takes a list of ssa-values produced in the block and forwards them
as a result to the operation that owns the region of the block. The
operation can retain the values or return them to its parent block
depending upon its semantics.
}];
let arguments = (ins Variadic<AnyType>:$results);
let builders = [OpBuilder<(ins), [{ /* do nothing */ }]>];
let assemblyFormat = "($results^ `:` type($results))? attr-dict";
let hasVerifier = 1;
}
def FirRegionTerminator : SingleBlockImplicitTerminator<"ResultOp">;
class region_Op<string mnemonic, list<Trait> traits = []> :
fir_Op<mnemonic,
!listconcat(traits, [FirRegionTerminator, RecursivelySpeculatable,
RecursiveMemoryEffects])> {
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
}
def fir_DoLoopOp : region_Op<"do_loop", [AttrSizedOperandSegments,
DeclareOpInterfaceMethods<LoopLikeOpInterface,
["getYieldedValuesMutable"]>]> {
let summary = "generalized loop operation";
let description = [{
Generalized high-level looping construct. This operation is similar to
MLIR's `scf.for`.
```
%l = arith.constant 0 : index
%u = arith.constant 9 : index
%s = arith.constant 1 : index
fir.do_loop %i = %l to %u step %s unordered {
%x = fir.convert %i : (index) -> i32
%v = fir.call @compute(%x) : (i32) -> f32
%p = fir.coordinate_of %A, %i : (!fir.ref<!fir.array<?xf32>>, index) -> !fir.ref<f32>
fir.store %v to %p : !fir.ref<f32>
}
```
The above example iterates over the interval `[%l, %u]`. The unordered
keyword indicates that the iterations can be executed in any order.
}];
let hasVerifier = 1;
let hasCustomAssemblyFormat = 1;
let arguments = (ins
Index:$lowerBound,
Index:$upperBound,
Index:$step,
Variadic<AnyType>:$reduceOperands,
Variadic<AnyType>:$initArgs,
OptionalAttr<UnitAttr>:$unordered,
OptionalAttr<UnitAttr>:$finalValue,
OptionalAttr<ArrayAttr>:$reduceAttrs,
OptionalAttr<LoopAnnotationAttr>:$loopAnnotation
);
let results = (outs Variadic<AnyType>:$results);
let regions = (region SizedRegion<1>:$region);
let skipDefaultBuilders = 1;
let builders = [
OpBuilder<(ins "mlir::Value":$lowerBound, "mlir::Value":$upperBound,
"mlir::Value":$step, CArg<"bool", "false">:$unordered,
CArg<"bool", "false">:$finalCountValue,
CArg<"mlir::ValueRange", "std::nullopt">:$iterArgs,
CArg<"mlir::ValueRange", "std::nullopt">:$reduceOperands,
CArg<"llvm::ArrayRef<mlir::Attribute>", "{}">:$reduceAttrs,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>
];
let extraClassDeclaration = [{
mlir::Value getInductionVar() { return getBody()->getArgument(0); }
mlir::OpBuilder getBodyBuilder() {
return mlir::OpBuilder(getBody(), std::prev(getBody()->end()));
}
mlir::Block::BlockArgListType getRegionIterArgs() {
return getBody()->getArguments().drop_front();
}
mlir::Operation::operand_range getIterOperands() {
return getOperands()
.drop_front(getNumControlOperands() + getNumReduceOperands());
}
llvm::MutableArrayRef<mlir::OpOperand> getInitsMutable() {
return getOperation()->getOpOperands()
.drop_front(getNumControlOperands() + getNumReduceOperands());
}
void setLowerBound(mlir::Value bound) { (*this)->setOperand(0, bound); }
void setUpperBound(mlir::Value bound) { (*this)->setOperand(1, bound); }
void setStep(mlir::Value step) { (*this)->setOperand(2, step); }
/// Number of region arguments for loop-carried values
unsigned getNumRegionIterArgs() {
return getBody()->getNumArguments() - 1;
}
/// Number of operands controlling the loop: lb, ub, step
unsigned getNumControlOperands() { return 3; }
/// Does the operation hold operands for loop-carried values
bool hasIterOperands() {
return getNumIterOperands() > 0;
}
/// Does the operation hold operands for reduction variables
bool hasReduceOperands() {
return getNumReduceOperands() > 0;
}
/// Get Number of variadic operands
unsigned getNumOperands(unsigned idx) {
auto segments = (*this)->getAttrOfType<mlir::DenseI32ArrayAttr>(
getOperandSegmentSizeAttr());
return static_cast<unsigned>(segments[idx]);
}
// Get Number of reduction operands
unsigned getNumReduceOperands() {
return getNumOperands(3);
}
/// Get Number of loop-carried values
unsigned getNumIterOperands() {
return getNumOperands(4);
}
/// Get the body of the loop
mlir::Block *getBody() { return &getRegion().front(); }
void setUnordered() {
setUnorderedAttr(mlir::UnitAttr::get(getContext()));
}
mlir::BlockArgument iterArgToBlockArg(mlir::Value iterArg);
void resultToSourceOps(llvm::SmallVectorImpl<mlir::Value> &results,
unsigned resultNum);
mlir::Value blockArgToSourceOp(unsigned blockArgNum);
}];
}
def fir_IfOp : region_Op<"if", [DeclareOpInterfaceMethods<RegionBranchOpInterface, [
"getRegionInvocationBounds", "getEntrySuccessorRegions"]>, RecursiveMemoryEffects,
NoRegionArguments]> {
let summary = "if-then-else conditional operation";
let description = [{
Used to conditionally execute operations. This operation is the FIR
dialect's version of `loop.if`.
```
%56 = ... : i1
%78 = ... : !fir.ref<!T>
fir.if %56 {
fir.store %76 to %78 : !fir.ref<!T>
} else {
fir.store %77 to %78 : !fir.ref<!T>
}
```
}];
let arguments = (ins I1:$condition);
let results = (outs Variadic<AnyType>:$results);
let regions = (region
SizedRegion<1>:$thenRegion,
MaxSizedRegion<1>:$elseRegion
);
let skipDefaultBuilders = 1;
let builders = [
OpBuilder<(ins "mlir::Value":$cond, "bool":$withElseRegion)>,
OpBuilder<(ins "mlir::TypeRange":$resultTypes, "mlir::Value":$cond,
"bool":$withElseRegion)>
];
let extraClassDeclaration = [{
mlir::OpBuilder getThenBodyBuilder() {
assert(!getThenRegion().empty() && "Unexpected empty 'where' region.");
mlir::Block &body = getThenRegion().front();
return mlir::OpBuilder(&body, std::prev(body.end()));
}
mlir::OpBuilder getElseBodyBuilder() {
assert(!getElseRegion().empty() && "Unexpected empty 'other' region.");
mlir::Block &body = getElseRegion().front();
return mlir::OpBuilder(&body, std::prev(body.end()));
}
void resultToSourceOps(llvm::SmallVectorImpl<mlir::Value> &results,
unsigned resultNum);
}];
}
def fir_IterWhileOp : region_Op<"iterate_while",
[DeclareOpInterfaceMethods<LoopLikeOpInterface,
["getYieldedValuesMutable"]>]> {
let summary = "DO loop with early exit condition";
let description = [{
This single-entry, single-exit looping construct is useful for lowering
counted loops that can exit early such as, for instance, implied-DO loops.
It is very similar to `fir::DoLoopOp` with the addition that it requires
a single loop-carried bool value that signals an early exit condition to
the operation. A `true` disposition means the next loop iteration should
proceed. A `false` indicates that the `fir.iterate_while` operation should
terminate and return its iteration arguments. This is a degenerate counted
loop in that the loop is not guaranteed to execute all iterations.
An example iterate_while that returns the counter value, the early
termination condition, and an extra loop-carried value is shown here. This
loop counts from %lo to %up (inclusive), stepping by %c1, so long as the
early exit (%ok) is true. The iter_args %sh value is also carried by the
loop. The result triple is the values of %i=phi(%lo,%i+%c1),
%ok=phi(%okIn,%okNew), and %sh=phi(%shIn,%shNew) from the last executed
iteration.
```
%v:3 = fir.iterate_while (%i = %lo to %up step %c1) and (%ok = %okIn) iter_args(%sh = %shIn) -> (index, i1, i16) {
%shNew = fir.call @bar(%sh) : (i16) -> i16
%okNew = fir.call @foo(%sh) : (i16) -> i1
fir.result %i, %okNew, %shNew : index, i1, i16
}
```
}];
let arguments = (ins
Index:$lowerBound,
Index:$upperBound,
Index:$step,
I1:$iterateIn,
Variadic<AnyType>:$initArgs,
OptionalAttr<UnitAttr>:$finalValue
);
let results = (outs Variadic<AnyType>:$results);
let regions = (region SizedRegion<1>:$region);
let skipDefaultBuilders = 1;
let builders = [
OpBuilder<(ins "mlir::Value":$lowerBound, "mlir::Value":$upperBound,
"mlir::Value":$step, "mlir::Value":$iterate,
CArg<"bool", "false">:$finalCountValue,
CArg<"mlir::ValueRange", "std::nullopt">:$iterArgs,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attributes)>
];
let extraClassDeclaration = [{
static constexpr llvm::StringRef getFinalValueAttrNameStr() {
return "finalValue";
}
mlir::Block *getBody() { return &getRegion().front(); }
mlir::Value getIterateVar() { return getBody()->getArgument(1); }
mlir::Value getInductionVar() { return getBody()->getArgument(0); }
mlir::OpBuilder getBodyBuilder() {
return mlir::OpBuilder(getBody(), std::prev(getBody()->end()));
}
mlir::Block::BlockArgListType getRegionIterArgs() {
return getBody()->getArguments().drop_front();
}
mlir::Operation::operand_range getIterOperands() {
return getOperands().drop_front(getNumControlOperands());
}
llvm::MutableArrayRef<mlir::OpOperand> getInitsMutable() {
return
getOperation()->getOpOperands().drop_front(getNumControlOperands());
}
void setLowerBound(mlir::Value bound) { (*this)->setOperand(0, bound); }
void setUpperBound(mlir::Value bound) { (*this)->setOperand(1, bound); }
void setStep(mlir::Value step) { (*this)->setOperand(2, step); }
/// Number of region arguments for loop-carried values
unsigned getNumRegionIterArgs() {
return getBody()->getNumArguments() - 1;
}
/// Number of operands controlling the loop
unsigned getNumControlOperands() { return 3; }
/// Does the operation hold operands for loop-carried values
bool hasIterOperands() {
return (*this)->getNumOperands() > getNumControlOperands();
}
/// Get Number of loop-carried values
unsigned getNumIterOperands() {
return (*this)->getNumOperands() - getNumControlOperands();
}
mlir::BlockArgument iterArgToBlockArg(mlir::Value iterArg);
void resultToSourceOps(llvm::SmallVectorImpl<mlir::Value> &results,
unsigned resultNum);
mlir::Value blockArgToSourceOp(unsigned blockArgNum);
}];
}
//===----------------------------------------------------------------------===//
// Procedure call operations
//===----------------------------------------------------------------------===//
def fir_CallOp : fir_Op<"call",
[CallOpInterface, DeclareOpInterfaceMethods<ArithFastMathInterface>]> {
let summary = "call a procedure";
let description = [{
Call the specified function or function reference.
Provides a custom parser and pretty printer to allow a more readable syntax
in the FIR dialect, e.g. `fir.call @sub(%12)` or `fir.call %20(%22,%23)`.
```
%a = fir.call %funcref(%arg0) : (!fir.ref<f32>) -> f32
%b = fir.call @function(%arg1, %arg2) : (!fir.ref<f32>, !fir.ref<f32>) -> f32
```
}];
let arguments = (ins
OptionalAttr<SymbolRefAttr>:$callee,
Variadic<AnyType>:$args,
OptionalAttr<fir_FortranProcedureFlagsAttr>:$procedure_attrs,
DefaultValuedAttr<Arith_FastMathAttr,
"::mlir::arith::FastMathFlags::none">:$fastmath
);
let results = (outs Variadic<AnyType>);
let hasCustomAssemblyFormat = 1;
let builders = [
OpBuilder<(ins "mlir::func::FuncOp":$callee,
CArg<"mlir::ValueRange", "{}">:$operands)>,
OpBuilder<(ins "mlir::SymbolRefAttr":$callee,
"llvm::ArrayRef<mlir::Type>":$results,
CArg<"mlir::ValueRange", "{}">:$operands)>,
OpBuilder<(ins "llvm::StringRef":$callee,
"llvm::ArrayRef<mlir::Type>":$results,
CArg<"mlir::ValueRange", "{}">:$operands),
[{
build($_builder, $_state,
mlir::SymbolRefAttr::get($_builder.getContext(), callee), results,
operands);
}]>];
let extraClassDeclaration = [{
static constexpr llvm::StringRef getCalleeAttrNameStr() { return "callee"; }
mlir::FunctionType getFunctionType();
/// Get the argument operands to the called function.
operand_range getArgOperands() {
if ((*this)->getAttrOfType<mlir::SymbolRefAttr>(getCalleeAttrName()))
return {arg_operand_begin(), arg_operand_end()};
return {arg_operand_begin() + 1, arg_operand_end()};
}
mlir::MutableOperandRange getArgOperandsMutable() {
if ((*this)->getAttrOfType<mlir::SymbolRefAttr>(getCalleeAttrName()))
return getArgsMutable();
return mlir::MutableOperandRange(*this, 1, getArgs().size() - 1);
}
operand_iterator arg_operand_begin() { return operand_begin(); }
operand_iterator arg_operand_end() { return operand_end(); }
/// Return the callee of this operation.
mlir::CallInterfaceCallable getCallableForCallee() {
if (auto calling =
(*this)->getAttrOfType<mlir::SymbolRefAttr>(getCalleeAttrName()))
return calling;
return getOperand(0);
}
/// Set the callee for this operation.
void setCalleeFromCallable(mlir::CallInterfaceCallable callee) {
if (auto calling =
(*this)->getAttrOfType<mlir::SymbolRefAttr>(getCalleeAttrName()))
(*this)->setAttr(getCalleeAttrName(), callee.get<mlir::SymbolRefAttr>());
setOperand(0, callee.get<mlir::Value>());
}
}];
}
def fir_DispatchOp : fir_Op<"dispatch", []> {
let summary = "call a type-bound procedure";
let description = [{
Perform a dynamic dispatch on the method name via the dispatch table
associated with the first operand. The attribute `pass_arg_pos` can be
used to select a dispatch operand other than the first one. The absence of
`pass_arg_pos` attribute means nopass.
```
// fir.dispatch with no attribute.
%r = fir.dispatch "methodA"(%o) : (!fir.class<T>) -> i32
// fir.dispatch with the `pass_arg_pos` attribute.
%r = fir.dispatch "methodA"(%o : !fir.class<T>) (%o : !fir.class<T>) -> i32 {pass_arg_pos = 0 : i32}
```
}];
let arguments = (ins
StrAttr:$method,
fir_ClassType:$object,
Variadic<AnyType>:$args,
OptionalAttr<I32Attr>:$pass_arg_pos
);
let results = (outs Variadic<AnyType>:$results);
let hasVerifier = 1;
let assemblyFormat = [{
$method `(` $object `:` qualified(type($object)) `)`
( `(` $args^ `:` type($args) `)` )? (`->` type($results)^)? attr-dict
}];
let extraClassDeclaration = [{
mlir::FunctionType getFunctionType();
operand_range getArgOperands() {
return {arg_operand_begin(), arg_operand_end()};
}
// operand[0] is the object (of class type)
operand_iterator arg_operand_begin() { return operand_begin() + 1; }
operand_iterator arg_operand_end() { return operand_end(); }
}];
}
// Constant operations that support Fortran
def fir_StringLitOp : fir_Op<"string_lit", [NoMemoryEffect]> {
let summary = "create a string literal constant";
let description = [{
An FIR constant that represents a sequence of characters that correspond
to Fortran's CHARACTER type, including a LEN. We support CHARACTER values
of different KINDs (different constant sizes).
```
%1 = fir.string_lit "Hello, World!"(13) : !fir.char<1> // ASCII
%2 = fir.string_lit [158, 2345](2) : !fir.char<2> // Wide chars
```
}];
let results = (outs fir_CharacterType);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let builders = [
OpBuilder<(ins "fir::CharacterType":$inType,
"llvm::StringRef":$value,
CArg<"std::optional<int64_t>", "{}">:$len)>,
OpBuilder<(ins "fir::CharacterType":$inType,
"llvm::ArrayRef<char>":$xlist,
CArg<"std::optional<int64_t>", "{}">:$len)>,
OpBuilder<(ins "fir::CharacterType":$inType,
"llvm::ArrayRef<char16_t>":$xlist,
CArg<"std::optional<int64_t>", "{}">:$len)>,
OpBuilder<(ins "fir::CharacterType":$inType,
"llvm::ArrayRef<char32_t>":$xlist,
CArg<"std::optional<int64_t>", "{}">:$len)>];
let extraClassDeclaration = [{
static constexpr const char *size() { return "size"; }
static constexpr const char *value() { return "value"; }
static constexpr const char *xlist() { return "xlist"; }
// Get the LEN attribute of this character constant
mlir::Attribute getSize() { return (*this)->getAttr(size()); }
// Get the string value of this character constant
mlir::Attribute getValue() {
if (auto attr = (*this)->getAttr(value()))
return attr;
return (*this)->getAttr(xlist());
}
/// Is this a wide character literal (1 character > 8 bits)
bool isWideValue();
}];
}
// Complex operations
class fir_ArithmeticOp<string mnemonic, list<Trait> traits = []> :
fir_Op<mnemonic,
!listconcat(traits, [NoMemoryEffect, SameOperandsAndResultType])>,
Results<(outs AnyType:$result)> {
let assemblyFormat = "operands attr-dict `:` type($result)";
}
class fir_UnaryArithmeticOp<string mnemonic, list<Trait> traits = []> :
fir_Op<mnemonic,
!listconcat(traits, [NoMemoryEffect, SameOperandsAndResultType])>,
Results<(outs AnyType:$result)> {
let assemblyFormat = "operands attr-dict `:` type($result)";
}
def fir_ConstcOp : fir_Op<"constc", [NoMemoryEffect]> {
let summary = "create a complex constant";
let description = [{
A complex constant. Similar to the standard dialect complex type, but this
extension allows constants with APFloat values that are not supported in
the standard dialect.
}];
let results = (outs fir_ComplexType);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let extraClassDeclaration = [{
static constexpr llvm::StringRef getRealAttrName() { return "real"; }
static constexpr llvm::StringRef getImagAttrName() { return "imaginary"; }
mlir::Attribute getReal() { return (*this)->getAttr(getRealAttrName()); }
mlir::Attribute getImaginary() { return (*this)->getAttr(getImagAttrName()); }
}];
}
class ComplexUnaryArithmeticOp<string mnemonic, list<Trait> traits = []> :
fir_UnaryArithmeticOp<mnemonic, traits>,
Arguments<(ins fir_ComplexType:$operand)>;
def fir_NegcOp : ComplexUnaryArithmeticOp<"negc">;
class ComplexArithmeticOp<string mnemonic, list<Trait> traits = []> :
fir_ArithmeticOp<mnemonic, traits>,
Arguments<(ins fir_ComplexType:$lhs, fir_ComplexType:$rhs,
DefaultValuedAttr<Arith_FastMathAttr,
"::mlir::arith::FastMathFlags::none">:$fastmath)>;
def fir_AddcOp : ComplexArithmeticOp<"addc",
[Commutative, DeclareOpInterfaceMethods<ArithFastMathInterface>]>;
def fir_SubcOp : ComplexArithmeticOp<"subc",
[DeclareOpInterfaceMethods<ArithFastMathInterface>]>;
def fir_MulcOp : ComplexArithmeticOp<"mulc",
[Commutative, DeclareOpInterfaceMethods<ArithFastMathInterface>]>;
def fir_DivcOp : ComplexArithmeticOp<"divc",
[DeclareOpInterfaceMethods<ArithFastMathInterface>]>;
// Pow is a builtin call and not a primitive
def fir_CmpcOp : fir_Op<"cmpc",
[NoMemoryEffect, SameTypeOperands, SameOperandsAndResultShape,
DeclareOpInterfaceMethods<ArithFastMathInterface>]> {
let summary = "complex floating-point comparison operator";
let description = [{
A complex comparison to handle complex types found in FIR.
}];
let arguments = (ins
fir_ComplexType:$lhs,
fir_ComplexType:$rhs,
DefaultValuedAttr<Arith_FastMathAttr, "::mlir::arith::FastMathFlags::none">:$fastmath);
let results = (outs AnyLogicalLike);
let hasCustomAssemblyFormat = 1;
let builders = [OpBuilder<(ins "mlir::arith::CmpFPredicate":$predicate,
"mlir::Value":$lhs, "mlir::Value":$rhs), [{
buildCmpCOp($_builder, $_state, predicate, lhs, rhs);
}]>];
let extraClassDeclaration = [{
static constexpr llvm::StringRef getPredicateAttrName() {
return "predicate";
}
mlir::arith::CmpFPredicate getPredicate() {
return (mlir::arith::CmpFPredicate)(*this)->getAttrOfType<mlir::IntegerAttr>(
getPredicateAttrName()).getInt();
}
static mlir::arith::CmpFPredicate getPredicateByName(llvm::StringRef name);
}];
}
// Other misc. operations
def fir_AddrOfOp : fir_OneResultOp<"address_of", [NoMemoryEffect]> {
let summary = "convert a symbol to an SSA value";
let description = [{
Convert a symbol (a function or global reference) to an SSA-value to be
used in other operations. References to Fortran symbols are distinguished
via this operation from other arbitrary constant values.
```
%p = fir.address_of(@symbol) : !fir.ref<f64>
```
}];
let arguments = (ins SymbolRefAttr:$symbol);
let results = (outs AnyAddressableLike:$resTy);
let assemblyFormat = "`(` $symbol `)` attr-dict `:` type($resTy)";
}
def fir_ConvertOp : fir_SimpleOneResultOp<"convert", [NoMemoryEffect]> {
let summary = "encapsulates all Fortran entity type conversions";
let description = [{
Generalized type conversion. Convert the ssa-value from type T to type U.
Not all pairs of types have conversions. When types T and U are the same
type, this instruction is a NOP and may be folded away. This also supports
integer to pointer conversion and pointer to integer conversion.
This operation also allows limited interaction between FIR and LLVM
dialects by allowing conversion between FIR pointer types and llvm.ptr type.
```
%v = ... : i64
%w = fir.convert %v : (i64) -> i32
```
The example truncates the value `%v` from an i64 to an i32.
}];
let arguments = (ins AnyType:$value);
let results = (outs AnyType:$res);
let assemblyFormat = [{
$value attr-dict `:` functional-type($value, results)
}];
let hasFolder = 1;
let hasVerifier = 1;
let extraClassDeclaration = [{
static bool isInteger(mlir::Type ty);
static bool isIntegerCompatible(mlir::Type ty);
static bool isFloatCompatible(mlir::Type ty);
static bool isPointerCompatible(mlir::Type ty);
static bool canBeConverted(mlir::Type inType, mlir::Type outType);
static bool areVectorsCompatible(mlir::Type inTy, mlir::Type outTy);
}];
let hasCanonicalizer = 1;
}
def FortranTypeAttr : Attr<And<[CPred<"mlir::isa<mlir::TypeAttr>($_self)">,
Or<[CPred<"mlir::isa<fir::CharacterType, fir::ComplexType, "
"fir::IntegerType, fir::LogicalType, fir::RealType, "
"fir::RecordType>(mlir::cast<mlir::TypeAttr>($_self).getValue())"
>]>]>, "Fortran surface type"> {
let storageType = [{ ::mlir::TypeAttr }];
let returnType = "mlir::Type";
let convertFromStorage = "mlir::cast<mlir::Type>($_self.getValue())";
}
def fir_TypeDescOp : fir_OneResultOp<"type_desc", [NoMemoryEffect]> {
let summary = "get type descriptor for a given type";
let description = [{
Generates a constant object that is an abstract type descriptor of the
specified type. The meta-type of a type descriptor for the type `T`
is `!fir.tdesc<T>`.
```
%t = fir.type_desc !fir.type<> // returns value of !fir.tdesc<!T>
```
}];
let arguments = (ins FortranTypeAttr:$in_type);
let hasCustomAssemblyFormat = 1;
let hasVerifier = 1;
let builders = [OpBuilder<(ins "mlir::TypeAttr":$inty)>];
}
def fir_NoReassocOp : fir_OneResultOp<"no_reassoc",
[NoMemoryEffect, SameOperandsAndResultType]> {
let summary = "synthetic op to prevent reassociation";
let description = [{
Primitive operation meant to intrusively prevent operator reassociation.
The operation is otherwise a nop and the value returned is the same as the
argument.
The presence of this operation prevents any local optimizations. In the
example below, this would prevent possibly replacing the multiply and add
operations with a single FMA operation.
```
%98 = arith.mulf %96, %97 : f32
%99 = fir.no_reassoc %98 : f32
%a0 = arith.addf %99, %95 : f32
```
}];
let arguments = (ins AnyType:$val);
let assemblyFormat = "$val attr-dict `:` type($val)";
}
class AtMostRegion<int numBlocks> : Region<
CPred<"$_self.getBlocks().size() <= " # numBlocks>,
"region with " # numBlocks # " blocks">;
def fir_GlobalOp : fir_Op<"global", [IsolatedFromAbove, Symbol]> {
let summary = "Global data";
let description = [{
A global variable or constant with initial values.
The example creates a global variable (writable) named
`@_QV_Mquark_Vvarble` with some initial values. The initializer should
conform to the variable's type.
```
fir.global @_QV_Mquark_Vvarble : tuple<i32, f32> {
%1 = arith.constant 1 : i32
%2 = arith.constant 2.0 : f32
%3 = fir.undefined tuple<i32, f32>
%z = arith.constant 0 : index
%o = arith.constant 1 : index
%4 = fir.insert_value %3, %1, %z : (tuple<i32, f32>, i32, index) -> tuple<i32, f32>
%5 = fir.insert_value %4, %2, %o : (tuple<i32, f32>, f32, index) -> tuple<i32, f32>
fir.has_value %5 : tuple<i32, f32>
}
```
}];
let arguments = (ins
StrAttr:$sym_name,
SymbolRefAttr:$symref,
TypeAttr:$type,
OptionalAttr<AnyAttr>:$initVal,
OptionalAttr<UnitAttr>:$constant,
OptionalAttr<UnitAttr>:$target,
OptionalAttr<StrAttr>:$linkName,
OptionalAttr<cuf_DataAttributeAttr>:$data_attr,
OptionalAttr<I64Attr>:$alignment
);
let regions = (region AtMostRegion<1>:$region);
let hasCustomAssemblyFormat = 1;
let skipDefaultBuilders = 1;
let builders = [
OpBuilder<(ins "llvm::StringRef":$name, "mlir::Type":$type,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
OpBuilder<(ins "llvm::StringRef":$name, "bool":$isConstant,
"bool":$isTarget, "mlir::Type":$type,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
OpBuilder<(ins "llvm::StringRef":$name, "mlir::Type":$type,
CArg<"mlir::StringAttr", "{}">:$linkage,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
OpBuilder<(ins "llvm::StringRef":$name, "bool":$isConstant,
"bool":$isTarget,
"mlir::Type":$type, CArg<"mlir::StringAttr", "{}">:$linkage,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
OpBuilder<(ins "llvm::StringRef":$name, "mlir::Type":$type,
"mlir::Attribute":$initVal, CArg<"mlir::StringAttr", "{}">:$linkage,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
OpBuilder<(ins "llvm::StringRef":$name, "bool":$isConstant,
"bool":$isTarget, "mlir::Type":$type, "mlir::Attribute":$initVal,
CArg<"mlir::StringAttr", "{}">:$linkage,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>,
];
let extraClassDeclaration = [{
/// The semantic type of the global
mlir::Type resultType();
/// Return the initializer attribute if it exists, or a null attribute.
mlir::Attribute getValueOrNull() { return getInitVal().value_or(mlir::Attribute()); }
/// Append the next initializer value to the `GlobalOp` to construct
/// the variable's initial value.
void appendInitialValue(mlir::Operation *op);
/// A GlobalOp has one block.
mlir::Block &getBlock() { return getRegion().front(); }
/// Determine if `linkage` is a supported keyword
static mlir::ParseResult verifyValidLinkage(llvm::StringRef linkage);
bool hasInitializationBody() {
return ((*this)->getNumRegions() == 1) && !getRegion().empty() &&
!mlir::isa<fir::FirEndOp>(getBlock().front());
}
mlir::FlatSymbolRefAttr getSymbol() {
return mlir::FlatSymbolRefAttr::get(getContext(),
(*this)->getAttrOfType<mlir::StringAttr>(
mlir::SymbolTable::getSymbolAttrName()).getValue());
}
bool isInitialized() {
return getInitVal() || hasInitializationBody();
}
}];
}
def fir_GlobalLenOp : fir_Op<"global_len", []> {
let summary = "map a LEN parameter to a global";
let description = [{
A global entity (that is not an automatic data object) can have extra LEN
parameter (compile-time) constants associated with the instance's type.
These values can be bound to the global instance used `fir.global_len`.
```
global @g : !fir.type<t(len1:i32)> {
fir.global_len len1, 10 : i32
%1 = fir.undefined !fir.type<t(len1:i32)>
fir.has_value %1 : !fir.type<t(len1:i32)>
}
```
}];
let arguments = (ins StrAttr:$lenparam, APIntAttr:$intval);
let hasCustomAssemblyFormat = 1;
let extraClassDeclaration = [{
static constexpr llvm::StringRef getLenParamAttrName() { return "lenparam"; }
static constexpr llvm::StringRef getIntAttrName() { return "intval"; }
}];
}
def ImplicitFirTerminator : SingleBlockImplicitTerminator<"FirEndOp">;
def fir_TypeInfoOp : fir_Op<"type_info",
[IsolatedFromAbove, Symbol, ImplicitFirTerminator]> {
let summary = "Derived type information";
let description = [{
Define extra information about a !fir.type<> that represents
a Fortran derived type.
The optional dispatch table region defines a dispatch table with the derived
type type-bound procedures. It contains a list of associations
between method identifiers and corresponding `FuncOp` symbols.
The ordering of associations in the map is determined by the front end.
The "no_init" flag indicates that this type has no components requiring default
initialization (including setting allocatable component to a clean deallocated
state).
The "no_destroy" flag indicates that there are no allocatable components
that require deallocation.
The "no_final" flag indicates that there are no final methods for this type,
for its parents ,or for components.
```
fir.type_info @_QMquuzTfoo noinit nofinal : !fir.type<_QMquuzTfoo{i:i32}> dispatch_table {
fir.dt_entry method1, @_QFNMquuzTfooPmethod1AfooR
fir.dt_entry method2, @_QFNMquuzTfooPmethod2AfooII
}
```
}];
let arguments = (ins
SymbolNameAttr:$sym_name,
TypeAttr:$type,
OptionalAttr<TypeAttr>:$parent_type,
UnitAttr:$no_init,
UnitAttr:$no_destroy,
UnitAttr:$no_final
);
let hasVerifier = 1;
let regions = (region
MaxSizedRegion<1>:$dispatch_table,
MaxSizedRegion<1>:$component_info
);
let builders = [
OpBuilder<(ins "fir::RecordType":$type, "fir::RecordType":$parent_type,
CArg<"llvm::ArrayRef<mlir::NamedAttribute>", "{}">:$attrs)>
];
let assemblyFormat = [{
$sym_name (`noinit` $no_init^)? (`nodestroy` $no_destroy^)?
(`nofinal` $no_final^)? (`extends` $parent_type^)? attr-dict `:` $type
(`dispatch_table` $dispatch_table^)?
(`component_info` $component_info^)?
}];
let extraClassDeclaration = [{
fir::RecordType getRecordType() {
return mlir::cast<fir::RecordType>(getType());
}
fir::RecordType getIfParentType() {
if (auto parentType = getParentType())
return mlir::cast<fir::RecordType>(*parentType);
return {};
}
std::optional<llvm::StringRef> getIfParentName() {
if (auto parentType = getIfParentType())
return parentType.getName();
return std::nullopt;
}
}];
}
def fir_DTEntryOp : fir_Op<"dt_entry", [HasParent<"TypeInfoOp">]> {
let summary = "map entry in a dispatch table";
let description = [{
An entry in a dispatch table. Allows a function symbol to be bound
to a specifier method identifier. A dispatch operation uses the dynamic
type of a distinguished argument to determine an exact dispatch table
and uses the method identifier to select the type-bound procedure to
be called.
```
fir.dt_entry method_name, @uniquedProcedure
```
}];
let arguments = (ins StrAttr:$method, SymbolRefAttr:$proc);
let hasCustomAssemblyFormat = 1;
let extraClassDeclaration = [{
static constexpr llvm::StringRef getProcAttrNameStr() { return "proc"; }
}];
}
def fir_DTComponentOp : fir_Op<"dt_component", [HasParent<"TypeInfoOp">]> {
let summary = "define extra information about a component inside fir.type_info";
let description = [{
```
fir.dt_component i lbs [-1,2] init @init_val
```
}];
let arguments = (ins
StrAttr:$name,
OptionalAttr<DenseI64ArrayAttr>:$lower_bounds,
OptionalAttr<FlatSymbolRefAttr>:$init_val
);
let assemblyFormat = "$name (`lbs` $lower_bounds^)? (`init` $init_val^)? attr-dict";
}
def fir_AbsentOp : fir_OneResultOp<"absent", [NoMemoryEffect]> {
let summary = "create value to be passed for absent optional function argument";
let description = [{
Given the type of a function argument, create a value that will signal that
an optional argument is absent in the call. On the caller side, fir.is_present
can be used to query if the value of an optional argument was created with
a fir.absent operation.
It is undefined to use a value that was created by a fir.absent op in any other
operation than fir.call and fir.is_present.
```
%1 = fir.absent fir.box<fir.array<?xf32>>
fir.call @_QPfoo(%1) : (fir.box<fir.array<?xf32>>) -> ()
```
}];
let results = (outs AnyRefOrBoxLike:$intype);
let assemblyFormat = "type($intype) attr-dict";
}
def fir_IsPresentOp : fir_SimpleOp<"is_present", [NoMemoryEffect]> {
let summary = "is this optional function argument present?";
let description = [{
Determine if an optional function argument is PRESENT (i.e. that it was not
created by a fir.absent op on the caller side).
```
func @_QPfoo(%arg0: !fir.box<!fir.array<?xf32>>) {
%0 = fir.is_present %arg0 : (!fir.box<!fir.array<?xf32>>) -> i1
...
```
}];
let arguments = (ins AnyRefOrBoxLike:$val);
let results = (outs BoolLike);
}
// fir.declare leads to no codegen so the side effects implementation should be
// Pure. However, this would allow dead code elimination to remove these
// operations if the values are unused. fir.declare may be used to generate
// debug information so we would like to keep this around even if the value
// is not used.
def fir_DeclareOp : fir_Op<"declare", [AttrSizedOperandSegments,
MemoryEffects<[MemWrite<DebuggingResource>]>,
DeclareOpInterfaceMethods<fir_FortranVariableOpInterface>]> {
let summary = "declare a variable";
let description = [{
Tie the properties of a Fortran variable to an address. The properties
include bounds, length parameters, and Fortran attributes.
The memref argument describes the storage of the variable. It may be a
raw address (fir.ref<T>), or a box or class value or address (fir.box<T>,
fir.ref<fir.box<T>>, fir.class<T>, fir.ref<fir.class<T>>).
The shape argument encodes explicit extents and lower bounds. It must be
provided if the memref is the raw address of an array.
The shape argument must not be provided if memref operand is a box or
class value or address, unless the shape is a shift (encodes lower bounds)
and the memref if a box value (this covers assumed shapes with local lower
bounds).
The typeparams values are meant to carry the non-deferred length parameters
(this includes both Fortran assumed and explicit length parameters).
It must always be provided for characters and parametrized derived types
when memref is not a box value or address.
Example:
CHARACTER(n), OPTIONAL, TARGET :: c(10:, 20:)
Can be represented as:
```
func.func @foo(%arg0: !fir.box<!fir.array<?x?x!fir.char<1,?>>>, %arg1: !fir.ref<i64>) {
%c10 = arith.constant 10 : index
%c20 = arith.constant 20 : index
%1 = fir.load %ag1 : fir.ref<i64>
%2 = fir.shift %c10, %c20 : (index, index) -> !fir.shift<2>
%3 = fir.declare %arg0(%2) typeparams %1 {fortran_attrs = #fir.var_attrs<optional, target>, uniq_name = "c"}
// ... uses %3 as "c"
}
```
}];
let arguments = (ins
AnyRefOrBox:$memref,
Optional<AnyShapeOrShiftType>:$shape,
Variadic<AnyIntegerType>:$typeparams,
Optional<fir_DummyScopeType>:$dummy_scope,
Builtin_StringAttr:$uniq_name,
OptionalAttr<fir_FortranVariableFlagsAttr>:$fortran_attrs,
OptionalAttr<cuf_DataAttributeAttr>:$data_attr
);
let results = (outs AnyRefOrBox);
let assemblyFormat = [{
$memref (`(` $shape^ `)`)? (`typeparams` $typeparams^)?
(`dummy_scope` $dummy_scope^)?
attr-dict `:` functional-type(operands, results)
}];
let hasVerifier = 1;
}
def fir_BoxOffsetOp : fir_Op<"box_offset", [NoMemoryEffect]> {
let summary = "Get the address of a field in a fir.ref<fir.box>";
let description = [{
Given the address of a fir.box, compute the address of a field inside
the fir.box.
This allows keeping the actual runtime descriptor layout abstract in
FIR while providing access to the pointer addresses in the runtime
descriptor for OpenMP/OpenACC target mapping.
To avoid requiring too much information about the fields that the runtime
descriptor implementation must have, only the base_addr and derived_type
descriptor fields can be addressed.
```
%addr = fir.box_offset %box base_addr : (!fir.ref<!fir.box<!fir.array<?xi32>>>) -> !fir.llvm_ptr<!fir.ref<!fir.array<?xi32>>>
%tdesc = fir.box_offset %box derived_type : (!fir.ref<!fir.box<!fir.type<t>>>) -> !fir.llvm_ptr<!fir.tdesc<!fir.type<t>>>
```
}];
let arguments = (ins
AnyReferenceLike:$box_ref,
fir_BoxFieldAttr:$field
);
let results = (outs RefOrLLVMPtr);
let hasVerifier = 1;
let assemblyFormat = [{
$box_ref $field attr-dict `:` functional-type(operands, results)
}];
let builders = [
OpBuilder<(ins "mlir::Value":$boxRef, "fir::BoxFieldAttr":$field)>
];
}
def fir_DummyScopeOp : fir_Op<"dummy_scope",
[MemoryEffects<[MemWrite<DebuggingResource>]>]> {
let summary = "Define a scope for dummy arguments";
let description = [{
An abstract handle to be used to associate dummy arguments of the same
subroutine between each other. By lowering, all [hl]fir.declare
operations representing declarations of dummy arguments of a subroutine
use the result of this operation. This allows recognizing the references
of these dummy arguments as belonging to the same runtime instance
of the subroutine even after MLIR inlining. Thus, the Fortran aliasing
rules might be applied to those references based on the original
declarations of the dummy arguments.
For example:
```
subroutine test(x, y)
real, target :: x, y
x = y ! may alias
call inner(x, y)
contains
subroutine inner(x, y)
real :: x, y
x = y ! may not alias
end subroutine inner
end subroutine test
```
After MLIR inlining this may look like this:
```
func.func @_QPtest(
%arg0: !fir.ref<f32> {fir.target},
%arg1: !fir.ref<f32> {fir.target}) {
%0 = fir.declare %arg0 {fortran_attrs = #fir.var_attrs<target>} :
(!fir.ref<f32>) -> !fir.ref<f32>
%1 = fir.declare %arg1 {fortran_attrs = #fir.var_attrs<target>} :
(!fir.ref<f32>) -> !fir.ref<f32>
%2 = fir.load %1 : !fir.ref<f32>
fir.store %2 to %0 : !fir.ref<f32>
%3 = fir.declare %0 : (!fir.ref<f32>) -> !fir.ref<f32>
%4 = fir.declare %1 : (!fir.ref<f32>) -> !fir.ref<f32>
%5 = fir.load %4 : !fir.ref<f32>
fir.store %5 to %3 : !fir.ref<f32>
return
}
```
Without marking %3 and %4 as declaring the dummy arguments
of the same runtime instance of `inner` subroutine the FIR
AliasAnalysis cannot deduce non-aliasing for the second load/store pair.
This information may be preserved by using fir.dummy_scope operation:
```
func.func @_QPtest(
%arg0: !fir.ref<f32> {fir.target},
%arg1: !fir.ref<f32> {fir.target}) {
%h1 = fir.dummy_scope : i1
%0 = fir.declare %arg0 dummy_scope(%h1)
{fortran_attrs = #fir.var_attrs<target>} :
(!fir.ref<f32>) -> !fir.ref<f32>
%1 = fir.declare %arg1 dummy_scope(%h1)
{fortran_attrs = #fir.var_attrs<target>} :
(!fir.ref<f32>) -> !fir.ref<f32>
%2 = fir.load %1 : !fir.ref<f32>
fir.store %2 to %0 : !fir.ref<f32>
%h2 = fir.dummy_scope : i1
%3 = fir.declare %0 dummy_scope(%h2) : (!fir.ref<f32>) -> !fir.ref<f32>
%4 = fir.declare %1 dummy_scope(%h2) : (!fir.ref<f32>) -> !fir.ref<f32>
%5 = fir.load %4 : !fir.ref<f32>
fir.store %5 to %3 : !fir.ref<f32>
return
}
```
Note that even if `inner` is called and inlined twice inside
`test`, the two inlined instances of `inner` must use two different
fir.dummy_scope operations for their fir.declare ops. This
two distinct fir.dummy_scope must remain distinct during the optimizations.
This is guaranteed by the write memory effect on the DebuggingResource.
}];
let results = (outs fir_DummyScopeType);
let assemblyFormat = "attr-dict `:` type(results)";
}
#endif
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