Mercurial > hg > CbC > CbC_llvm
diff test/CodeGen/X86/x86-sanitizer-shrink-wrapping.ll @ 100:7d135dc70f03 LLVM 3.9
LLVM 3.9
author | Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp> |
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date | Tue, 26 Jan 2016 22:53:40 +0900 |
parents | |
children | 803732b1fca8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/CodeGen/X86/x86-sanitizer-shrink-wrapping.ll Tue Jan 26 22:53:40 2016 +0900 @@ -0,0 +1,40 @@ +; RUN: llc -o - < %s | FileCheck %s + +target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" +target triple = "x86_64-apple-macosx" + +; 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. +; CHECK-LABEL: sanitize: +; CHECK: pushq +; CHECK: incl 40 +; CHECK: popq +; CHECK-NEXT: retq +; CHECK: movl $40, %edi +; CHECK-NEXT callq ___asan_report_load4 +define void @sanitize() #0 { +entry: + %tmp = load i8, i8* inttoptr (i64 17592186044421 to i8*) + %tmp1 = icmp ne i8 %tmp, 0 + br i1 %tmp1, label %if.then, label %else + +if.then: + %tmp3 = icmp sge i8 3, %tmp + br i1 %tmp3, label %else, label %end + +else: + call void @__asan_report_load4(i64 40) + call void asm sideeffect "", ""() + unreachable + +end: + %tmp6 = load i32, i32* inttoptr (i64 40 to i32*), align 8 + %inc = add nsw i32 %tmp6, 1 + store i32 %inc, i32* inttoptr (i64 40 to i32*), align 8 + ret void +} + +attributes #0 = { sanitize_address nounwind "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } + +declare void @__asan_report_load4(i64)