; RUN: opt -safepoint-ir-verifier-print-only -verify-safepoint-ir -S %s 2>&1 | FileCheck %s
define ptr addrspace(1) @test.not.ok.0(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.not.ok.0
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0)
br label %merge
right:
br label %merge
merge:
; CHECK: Illegal use of unrelocated value found!
; CHECK-NEXT: Def: %val = phi ptr addrspace(1) [ %arg, %left ], [ %arg, %right ]
; CHECK-NEXT: Use: ret ptr addrspace(1) %val
%val = phi ptr addrspace(1) [ %arg, %left ], [ %arg, %right ]
ret ptr addrspace(1) %val
}
define ptr addrspace(1) @test.not.ok.1(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.not.ok.1
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0)
br label %merge
right:
br label %merge
merge:
; CHECK: Illegal use of unrelocated value found!
; CHECK-NEXT: Def: %val = phi ptr addrspace(1) [ %arg, %left ], [ null, %right ]
; CHECK-NEXT: Use: ret ptr addrspace(1) %val
%val = phi ptr addrspace(1) [ %arg, %left ], [ null, %right ]
ret ptr addrspace(1) %val
}
define ptr addrspace(1) @test.ok.0(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK: No illegal uses found by SafepointIRVerifier in: test.ok.0
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0)
br label %merge
right:
br label %merge
merge:
%val = phi ptr addrspace(1) [ null, %left ], [ null, %right]
ret ptr addrspace(1) %val
}
define ptr addrspace(1) @test.ok.1(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK: No illegal uses found by SafepointIRVerifier in: test.ok.1
bci_0:
br i1 undef, label %left, label %right
left:
call void @not_statepoint()
br label %merge
right:
br label %merge
merge:
%val = phi ptr addrspace(1) [ %arg, %left ], [ %arg, %right]
ret ptr addrspace(1) %val
}
; It should be allowed to compare poisoned ptr with null.
define void @test.poisoned.cmp.ok(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.poisoned.cmp.ok
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg)]
%arg.relocated = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0) ; arg, arg
br label %merge
right:
%safepoint_token2 = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg)]
br label %merge
merge:
; CHECK: No illegal uses found by SafepointIRVerifier in: test.poisoned.cmp.ok
%val.poisoned = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg, %right ]
%c = icmp eq ptr addrspace(1) %val.poisoned, null
ret void
}
; It is illegal to compare poisoned ptr and relocated.
define void @test.poisoned.cmp.fail.0(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.poisoned.cmp.fail.0
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg)]
%arg.relocated = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0) ; arg, arg
br label %merge
right:
%safepoint_token2 = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg), "deopt"(i32 -1, i32 0, i32 0, i32 0)]
%arg.relocated2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0) ; arg, arg
br label %merge
merge:
; CHECK: Illegal use of unrelocated value found!
; CHECK-NEXT: Def: %val.poisoned = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg, %right ]
; CHECK-NEXT: Use: %c = icmp eq ptr addrspace(1) %val.poisoned, %val
%val.poisoned = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg, %right ]
%val = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg.relocated2, %right ]
%c = icmp eq ptr addrspace(1) %val.poisoned, %val
ret void
}
; It is illegal to compare poisoned ptr and unrelocated.
define void @test.poisoned.cmp.fail.1(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.poisoned.cmp.fail.1
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg)]
%arg.relocated = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0) ; arg, arg
br label %merge
right:
%safepoint_token2 = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg), "deopt"(i32 -1, i32 0, i32 0, i32 0)]
%arg.relocated2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0) ; arg, arg
br label %merge
merge:
; CHECK: Illegal use of unrelocated value found!
; CHECK-NEXT: Def: %val.poisoned = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg, %right ]
; CHECK-NEXT: Use: %c = icmp eq ptr addrspace(1) %val.poisoned, %arg
%val.poisoned = phi ptr addrspace(1) [ %arg.relocated, %left ], [ %arg, %right ]
%c = icmp eq ptr addrspace(1) %val.poisoned, %arg
ret void
}
; It should be allowed to compare unrelocated phi with unrelocated value.
define void @test.unrelocated-phi.cmp.ok(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: Verifying gc pointers in function: test.unrelocated-phi.cmp.ok
bci_0:
br i1 undef, label %left, label %right
left:
%safepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) undef, i32 0, i32 0, i32 0, i32 0)
br label %merge
right:
br label %merge
merge:
; CHECK: No illegal uses found by SafepointIRVerifier in: test.unrelocated-phi.cmp.ok
%val.unrelocated = phi ptr addrspace(1) [ %arg, %left ], [ null, %right ]
%c = icmp eq ptr addrspace(1) %val.unrelocated, %arg
ret void
}
declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32)
declare void @not_statepoint()
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