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| author | Yury Gribov <y.gribov@samsung.com> | 2014-12-01 08:47:58 +0000 |
|---|---|---|
| committer | Yury Gribov <y.gribov@samsung.com> | 2014-12-01 08:47:58 +0000 |
| commit | 3ae427d81183d6f7675811ed7d6ffa365adc1938 (patch) | |
| tree | 18e72eb8b95e5202d5dbcba445eb840f37390e5d /llvm/test | |
| parent | 7de905cd172a908b96fa523575dbca4df52445ca (diff) | |
| download | bcm5719-llvm-3ae427d81183d6f7675811ed7d6ffa365adc1938.tar.gz bcm5719-llvm-3ae427d81183d6f7675811ed7d6ffa365adc1938.zip | |
[asan] Change dynamic alloca instrumentation to only consider allocas that are dominating all exits from function.
Reviewed in http://reviews.llvm.org/D6412
llvm-svn: 222991
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Instrumentation/AddressSanitizer/undecidable-dynamic-alloca-1.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/Instrumentation/AddressSanitizer/undecidable-dynamic-alloca-1.ll b/llvm/test/Instrumentation/AddressSanitizer/undecidable-dynamic-alloca-1.ll new file mode 100644 index 00000000000..c67fb501463 --- /dev/null +++ b/llvm/test/Instrumentation/AddressSanitizer/undecidable-dynamic-alloca-1.ll @@ -0,0 +1,23 @@ +; Test that undecidable dynamic allocas are skipped by ASan. + +; RUN: opt < %s -asan -asan-module -asan-instrument-allocas=1 -S | FileCheck %s +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 @g(i64 %n) sanitize_address { +entry: + %cmp = icmp sgt i64 %n, 100 + br i1 %cmp, label %do_alloca, label %done + +do_alloca: +; CHECK-NOT: store i32 -892679478 + %0 = alloca i8, i64 %n, align 1 + call void @f(i8* %0) + br label %done + +done: + ret void +} + +declare void @f(i8*) + |
