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[asan] one more test for asan instrumentation: (*a)++ should be instrumented only once.

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llvm-svn: 147509
This commit is contained in:
Kostya Serebryany 2012-01-04 01:02:14 +00:00
parent a655d4ba69
commit c69557e758
1 changed files with 25 additions and 0 deletions
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25
test/Instrumentation/AddressSanitizer/instrument_load_then_store.ll Normal file
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; Test that AddressSanitizer instruments "(*a)++" only once.
; RUN: opt < %s -asan -S -asan-opt=1 | FileCheck %s -check-prefix=OPT1
; RUN: opt < %s -asan -S -asan-opt=0 | FileCheck %s -check-prefix=OPT0
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-unknown-linux-gnu"
define void @IncrementMe(i32* %a) {
entry:
%tmp1 = load i32* %a, align 4
%tmp2 = add i32 %tmp1, 1
store i32 %tmp2, i32* %a, align 4
ret void
}
; With optimizations enabled we should see only one call to __asan_report_*
; OPT1: IncrementMe
; OPT1: __asan_report_
; OPT1-NOT: __asan_report_
; OPT1: asan.module_ctor
; Without optimizations we should see two calls to __asan_report_*
; OPT0: IncrementMe
; OPT0: __asan_report_
; OPT0: __asan_report_
; OPT0: asan.module_ctor