llvm-mirror/test/Transforms/InstCombine/lifetime-sanitizer.ll
Vitaly Buka e9f6fcfdc2 msan, codegen, instcombine: Keep more lifetime markers used for msan
Reviewers: eugenis

Subscribers: hiraditya, cfe-commits, #sanitizers, llvm-commits

Tags: #clang, #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D66695

llvm-svn: 369979
2019-08-26 22:15:50 +00:00

65 lines
1.5 KiB
LLVM

; RUN: opt < %s -instcombine -S | FileCheck %s
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
declare void @foo(i8* nocapture)
define void @asan() sanitize_address {
entry:
; CHECK-LABEL: @asan(
%text = alloca i8, align 1
call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
; CHECK: call void @llvm.lifetime.start
; CHECK-NEXT: call void @llvm.lifetime.end
call void @foo(i8* %text) ; Keep alloca alive
ret void
}
define void @hwasan() sanitize_hwaddress {
entry:
; CHECK-LABEL: @hwasan(
%text = alloca i8, align 1
call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
; CHECK: call void @llvm.lifetime.start
; CHECK-NEXT: call void @llvm.lifetime.end
call void @foo(i8* %text) ; Keep alloca alive
ret void
}
define void @msan() sanitize_memory {
entry:
; CHECK-LABEL: @msan(
%text = alloca i8, align 1
call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
; CHECK: call void @llvm.lifetime.start
; CHECK-NEXT: call void @llvm.lifetime.end
call void @foo(i8* %text) ; Keep alloca alive
ret void
}
define void @no_asan() {
entry:
; CHECK-LABEL: @no_asan(
%text = alloca i8, align 1
call void @llvm.lifetime.start.p0i8(i64 1, i8* %text)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %text)
; CHECK-NO: call void @llvm.lifetime
call void @foo(i8* %text) ; Keep alloca alive
ret void
}