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-rw-r--r--clang/lib/CodeGen/CodeGenModule.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 775f500fdb1..f2dda5d658f 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -523,6 +523,10 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
!F->hasFnAttr(llvm::Attribute::NoInline))
F->addFnAttr(llvm::Attribute::AlwaysInline);
+ // FIXME: Communicate hot and cold attributes to LLVM more directly.
+ if (D->hasAttr<ColdAttr>())
+ F->addFnAttr(llvm::Attribute::OptimizeForSize);
+
if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D))
F->setUnnamedAddr(true);
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