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| -rw-r--r-- | test/Instrumentation/AddressSanitizer/instrument_load_then_store.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Instrumentation/AddressSanitizer/instrument_load_then_store.ll b/test/Instrumentation/AddressSanitizer/instrument_load_then_store.ll new file mode 100644 index 0000000000..633cf4f2c9 --- /dev/null +++ b/test/Instrumentation/AddressSanitizer/instrument_load_then_store.ll @@ -0,0 +1,25 @@ +; 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 |