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| author | Kostya Serebryany <kcc@google.com> | 2016-09-20 00:16:54 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2016-09-20 00:16:54 +0000 |
| commit | 06694d0a2f487c5fc59dd8e2d76366d97598abfb (patch) | |
| tree | edd557e55190338c047e169f6eeb5d746615474f /llvm | |
| parent | d1d7cfcd520ec67f6ce0dd284980c040d98b9fbb (diff) | |
| download | bcm5719-llvm-06694d0a2f487c5fc59dd8e2d76366d97598abfb.tar.gz bcm5719-llvm-06694d0a2f487c5fc59dd8e2d76366d97598abfb.zip | |
[sanitizer-coverage] add comdat to coverage guards if needed
llvm-svn: 281952
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/Instrumentation/SanitizerCoverage/tracing-comdat.ll | 13 |
2 files changed, 15 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp index a2755adc7fa..9e1ff1cd6d2 100644 --- a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp +++ b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp @@ -669,6 +669,8 @@ void SanitizerCoverageModule::InjectCoverageAtBlock(Function &F, BasicBlock &BB, auto GuardVar = new GlobalVariable( *F.getParent(), Int64Ty, false, GlobalVariable::LinkOnceODRLinkage, Constant::getNullValue(Int64Ty), "__sancov_guard." + F.getName()); + if (auto Comdat = F.getComdat()) + GuardVar->setComdat(Comdat); // TODO: add debug into to GuardVar. GuardVar->setSection(SanCovTracePCGuardSection); auto GuardPtr = IRB.CreatePointerCast(GuardVar, IntptrPtrTy); diff --git a/llvm/test/Instrumentation/SanitizerCoverage/tracing-comdat.ll b/llvm/test/Instrumentation/SanitizerCoverage/tracing-comdat.ll new file mode 100644 index 00000000000..f718af53644 --- /dev/null +++ b/llvm/test/Instrumentation/SanitizerCoverage/tracing-comdat.ll @@ -0,0 +1,13 @@ +; Test that the coverage guards have proper comdat +; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard -S | FileCheck %s +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" +$Foo = comdat any +; Function Attrs: uwtable +define linkonce_odr void @Foo() comdat { +entry: + ret void +} + +; CHECK: @__sancov_guard.Foo = linkonce_odr global i64 0, section "__sancov_guards", comdat($Foo) + |
