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| author | Kuba Brecka <kuba.brecka@gmail.com> | 2016-11-08 21:30:41 +0000 |
|---|---|---|
| committer | Kuba Brecka <kuba.brecka@gmail.com> | 2016-11-08 21:30:41 +0000 |
| commit | a49dcbb743d822d05e5e091bf97378d38f36140d (patch) | |
| tree | 1ab4df691c28a8dd85d1f6354a505cc058826ef4 /llvm/test | |
| parent | 270dab27941daf221e2b65a379c7357a1542135a (diff) | |
| download | bcm5719-llvm-a49dcbb743d822d05e5e091bf97378d38f36140d.tar.gz bcm5719-llvm-a49dcbb743d822d05e5e091bf97378d38f36140d.zip | |
[asan] Speed up compilation of large C++ stringmaps (tons of allocas) with ASan
This addresses PR30746, <https://llvm.org/bugs/show_bug.cgi?id=30746>. The ASan pass iterates over entry-block instructions and checks each alloca whether it's in NonInstrumentedStaticAllocaVec, which is apparently slow. This patch gathers the instructions to move during visitAllocaInst.
Differential Revision: https://reviews.llvm.org/D26380
llvm-svn: 286296
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Instrumentation/AddressSanitizer/debug_info_noninstrumented_alloca2.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Instrumentation/AddressSanitizer/debug_info_noninstrumented_alloca2.ll b/llvm/test/Instrumentation/AddressSanitizer/debug_info_noninstrumented_alloca2.ll new file mode 100644 index 00000000000..b6d393d0c33 --- /dev/null +++ b/llvm/test/Instrumentation/AddressSanitizer/debug_info_noninstrumented_alloca2.ll @@ -0,0 +1,21 @@ +; Make sure we don't break the IR when moving non-instrumented allocas + +; RUN: opt < %s -asan -asan-module -S | FileCheck %s +; RUN: opt < %s -asan -asan-module -asan-instrument-dynamic-allocas -S | FileCheck %s + +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.10.0" + +define i32 @foo() sanitize_address { +entry: + %non_instrumented1 = alloca i32, align 4 + %t = load i32, i32* %non_instrumented1, align 4 + %instrumented = alloca i32, align 4 + %ptr = ptrtoint i32* %instrumented to i32 + ret i32 %t +} + +; CHECK: entry: +; CHECK: %non_instrumented1 = alloca i32, align 4 +; CHECK: load i32, i32* %non_instrumented1 +; CHECK: load i32, i32* @__asan_option_detect_stack_use_after_return |
