commit bb6f079a457548fd617f2560f0c296083ecae570
author Kostya Serebryany <kcc@google.com> Mon Jul 31 19:49:45 2017 +0000
committer Kostya Serebryany <kcc@google.com> Mon Jul 31 19:49:45 2017 +0000
tree adc74c7e37ed41cee1f232f77ac20ab86f2449df
parent 9f6e41cdbabd7cfcfe7096544a61bb41dfcef746

[sanitizer-coverage] ensure minimal alignment for coverage counters and guards

llvm-svn: 309610

llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp

diff --git a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
index 9f129b7..fb7f8ec 100644
--- a/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
+++ b/llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
@@ -487,6 +487,8 @@
   if (auto Comdat = F.getComdat())
     Array->setComdat(Comdat);
   Array->setSection(getSectionName(Section));
+  Array->setAlignment(Ty->isPointerTy() ? DL->getPointerSize()
+                                        : Ty->getPrimitiveSizeInBits() / 8);
   return Array;
 }
 
@@ -505,7 +507,6 @@
   FunctionPCsArray->setInitializer(
       ConstantArray::get(ArrayType::get(Int8PtrTy, N), PCs));
   FunctionPCsArray->setConstant(true);
-  FunctionPCsArray->setAlignment(DL->getPointerSize());
 }
 
 void SanitizerCoverageModule::CreateFunctionLocalArrays(