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| author | Justin Bogner <mail@justinbogner.com> | 2017-08-25 01:24:54 +0000 |
|---|---|---|
| committer | Justin Bogner <mail@justinbogner.com> | 2017-08-25 01:24:54 +0000 |
| commit | ad96ff1228e4fa51c84879c87d4bc4f55120d729 (patch) | |
| tree | bcc46e604446cad2506c61839bf344924d5d0b48 /llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp | |
| parent | 12bd32937e06dbb404df3bd0c5633df49226d52e (diff) | |
| download | bcm5719-llvm-ad96ff1228e4fa51c84879c87d4bc4f55120d729.tar.gz bcm5719-llvm-ad96ff1228e4fa51c84879c87d4bc4f55120d729.zip | |
[sanitizer-coverage] Make sure pc-tables aren't dead stripped
Add a reference to the PC array in llvm.used so that linkers that
aggressively dead strip (like ld64) don't remove it.
llvm-svn: 311742
Diffstat (limited to 'llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp index c6f0d17f8fe..fdf265143fd 100644 --- a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp +++ b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp @@ -557,6 +557,10 @@ void SanitizerCoverageModule::CreatePCArray(Function &F, FunctionPCsArray->setInitializer( ConstantArray::get(ArrayType::get(Int8PtrTy, N), PCs)); FunctionPCsArray->setConstant(true); + + // We don't reference the PCs array in any of our runtime functions, so we + // need to prevent it from being dead stripped. + appendToUsed(*F.getParent(), {FunctionPCsArray}); } void SanitizerCoverageModule::CreateFunctionLocalArrays( |
