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[asan] one more test for asan instrumentation: (*a)++ should be instrumented only once. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147509 91177308-0d34-0410-b5e6-96231b3b80d8 Kostya Serebryany 7 years ago
1 changed file(s) with 25 addition(s) and 0 deletion(s). Raw diff Collapse all Expand all
0 ; Test that AddressSanitizer instruments "(*a)++" only once.
1 ; RUN: opt < %s -asan -S -asan-opt=1 | FileCheck %s -check-prefix=OPT1
2 ; RUN: opt < %s -asan -S -asan-opt=0 | FileCheck %s -check-prefix=OPT0
3
4 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"
5 target triple = "x86_64-unknown-linux-gnu"
6 define void @IncrementMe(i32* %a) {
7 entry:
8 %tmp1 = load i32* %a, align 4
9 %tmp2 = add i32 %tmp1, 1
10 store i32 %tmp2, i32* %a, align 4
11 ret void
12 }
13
14 ; With optimizations enabled we should see only one call to __asan_report_*
15 ; OPT1: IncrementMe
16 ; OPT1: __asan_report_
17 ; OPT1-NOT: __asan_report_
18 ; OPT1: asan.module_ctor
19
20 ; Without optimizations we should see two calls to __asan_report_*
21 ; OPT0: IncrementMe
22 ; OPT0: __asan_report_
23 ; OPT0: __asan_report_
24 ; OPT0: asan.module_ctor