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attribute. Even if the target supports shrink-wrapping, the prologue and epilogue must not move because a crash can happen anywhere and sanitizers need to be able to unwind from the PC of the crash. llvm-svn: 253116
41 lines
1.1 KiB
LLVM
41 lines
1.1 KiB
LLVM
; RUN: llc -o - < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "x86_64-apple-macosx"
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; Even if the target supports shrink-wrapping, the prologue and epilogue
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; must not move because a crash can happen anywhere and sanitizers need
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; to be able to unwind from the PC of the crash.
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; CHECK-LABEL: sanitize:
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; CHECK: pushq
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; CHECK: incl 40
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; CHECK: popq
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; CHECK-NEXT: retq
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; CHECK: movl $40, %edi
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; CHECK-NEXT callq ___asan_report_load4
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define void @sanitize() #0 {
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entry:
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%tmp = load i8, i8* inttoptr (i64 17592186044421 to i8*)
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%tmp1 = icmp ne i8 %tmp, 0
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br i1 %tmp1, label %if.then, label %else
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if.then:
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%tmp3 = icmp sge i8 3, %tmp
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br i1 %tmp3, label %else, label %end
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else:
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call void @__asan_report_load4(i64 40)
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call void asm sideeffect "", ""()
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unreachable
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end:
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%tmp6 = load i32, i32* inttoptr (i64 40 to i32*), align 8
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%inc = add nsw i32 %tmp6, 1
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store i32 %inc, i32* inttoptr (i64 40 to i32*), align 8
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ret void
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}
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attributes #0 = { sanitize_address nounwind "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
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declare void @__asan_report_load4(i64)
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