# Start after bbsections0-prepare and check if the right code is generated.
# RUN: llc -mtriple x86_64-unknown-linux-gnu -start-after=bbsections-prepare %s -o - | FileCheck %s -check-prefix=CHECK
# How to generate the input:
# foo.cc
# int foo(bool k) {
# if (k) return 1;
# return 0;
# }
#
# clang -O0 -S -emit-llvm foo.cc
# llc < foo.ll -stop-after=bbsections-prepare -basic-block-sections=all
--- |
; Function Attrs: noinline nounwind optnone uwtable
define dso_local i32 @_Z3foob(i1 zeroext %0) #0 {
%2 = alloca i32, align 4
%3 = alloca i8, align 1
%4 = zext i1 %0 to i8
store i8 %4, ptr %3, align 1
%5 = load i8, ptr %3, align 1
%6 = trunc i8 %5 to i1
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 1, ptr %2, align 4
br label %9
8: ; preds = %1
store i32 0, ptr %2, align 4
br label %9
9: ; preds = %8, %7
%10 = load i32, ptr %2, align 4
ret i32 %10
}
attributes #0 = { "frame-pointer"="all" "target-cpu"="x86-64" }
...
---
name: _Z3foob
alignment: 16
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins:
- { reg: '$edi', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 8
offsetAdjustment: -8
maxAlignment: 4
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack:
- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
callee-saved-register: '', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
stack:
- { id: 0, type: default, offset: -24, size: 4,
alignment: 4, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, type: default, offset: -17, size: 1,
alignment: 1, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants: []
machineFunctionInfo: {}
body: |
bb.0 (%ir-block.1, align 4, bbsections 0):
successors: %bb.2(0x40000000), %bb.1(0x40000000)
liveins: $edi
frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
$rbp = frame-setup MOV64rr $rsp
CFI_INSTRUCTION def_cfa_register $rbp
renamable $dil = AND8ri renamable $dil, 1, implicit-def dead $eflags, implicit killed $edi, implicit-def $edi
MOV8mr $rbp, 1, $noreg, -1, $noreg, renamable $dil, implicit killed $edi :: (store (s8) into %ir.3)
TEST8mi $rbp, 1, $noreg, -1, $noreg, 1, implicit-def $eflags :: (load (s8) from %ir.3)
JCC_1 %bb.2, 4, implicit killed $eflags
JMP_1 %bb.1
bb.1 (%ir-block.7, bbsections 1):
successors: %bb.3(0x80000000)
MOV32mi $rbp, 1, $noreg, -8, $noreg, 1 :: (store (s32) into %ir.2)
JMP_1 %bb.3
bb.2 (%ir-block.8, bbsections 2):
successors: %bb.3(0x80000000)
MOV32mi $rbp, 1, $noreg, -8, $noreg, 0 :: (store (s32) into %ir.2)
JMP_1 %bb.3
bb.3 (%ir-block.9, bbsections 3):
renamable $eax = MOV32rm $rbp, 1, $noreg, -8, $noreg :: (load (s32) from %ir.2)
$rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa $rsp, 8
RET64 implicit $eax
...
# CHECK: .section .text._Z3foob,"ax",@progbits
# CHECK: _Z3foob:
# CHECK: .section .text._Z3foob,"ax",@progbits,unique
# CHECK: _Z3foob.__part.1:
# CHECK: .section .text._Z3foob,"ax",@progbits,unique
# CHECK: _Z3foob.__part.2:
# CHECK: .section .text._Z3foob,"ax",@progbits,unique
# CHECK: _Z3foob.__part.3:
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