84 lines
2.1 KiB
LLVM
84 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-macosx -O3 -enable-implicit-null-checks -o - < %s 2>&1 | FileCheck %s
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declare void @throw0()
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declare void @throw1()
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define i1 @f(ptr %p0, ptr %p1) {
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entry:
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%c0 = icmp eq ptr %p0, null
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br i1 %c0, label %throw0, label %continue0, !make.implicit !0
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continue0:
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%v0 = load i8, ptr %p0
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%c1 = icmp eq ptr %p1, null
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br i1 %c1, label %throw1, label %continue1, !make.implicit !0
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continue1:
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%v1 = load i8, ptr %p1
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%v = icmp eq i8 %v0, %v1
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ret i1 %v
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throw0:
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call void @throw0()
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unreachable
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throw1:
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call void @throw1()
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unreachable
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}
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declare void @foo()
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declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
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declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32) nounwind readonly
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; Check for a crash. The crash is not specific to statepoints, but
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; gc.statpeoint is an easy way to generate a fill instruction in
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; %continue0 (which causes the llc crash).
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define i1 @g(ptr addrspace(1) %p0, ptr %p1) gc "statepoint-example" {
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entry:
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%c0 = icmp eq ptr addrspace(1) %p0, null
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%tok = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %p0)]
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%p0.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %tok, i32 0, i32 0) ; (%p0, %p0)
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br i1 %c0, label %throw0, label %continue0, !make.implicit !0
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continue0:
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%c1 = icmp eq ptr %p1, null
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br i1 %c1, label %throw1, label %continue1, !make.implicit !0
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continue1:
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%v0 = load i8, ptr addrspace(1) %p0.relocated
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%v1 = load i8, ptr %p1
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%v = icmp eq i8 %v0, %v1
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ret i1 %v
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throw0:
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call void @throw0()
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unreachable
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throw1:
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call void @throw1()
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unreachable
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}
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; Check that we have two implicit null checks in @f
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; CHECK: __LLVM_FaultMaps:
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; CHECK-NEXT: .byte 1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .short 0
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; CHECK-NEXT: .long 1
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; FunctionInfo[0] =
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; FunctionAddress =
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; CHECK-NEXT: .quad _f
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; NumFaultingPCs =
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; CHECK-NEXT: .long 2
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; Reserved =
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; CHECK-NEXT: .long 0
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!0 = !{}
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