Tighten up the set of operator new/operator delete calls we're permitted to
optimize, to follow the permissions granted in N3664. Under those rules, only
calls generated by new-expressions and delete-expressions are permitted to be
optimized, and direct calls to ::operator new and ::operator delete must be
treated as normal calls.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186799 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index af6a011..53efaa6 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -744,6 +744,12 @@
if (const SectionAttr *SA = FD->getAttr<SectionAttr>())
F->setSection(SA->getName());
+
+ // A replaceable global allocation function does not act like a builtin by
+ // default, only if it is invoked by a new-expression or delete-expression.
+ if (FD->isReplaceableGlobalAllocationFunction())
+ F->addAttribute(llvm::AttributeSet::FunctionIndex,
+ llvm::Attribute::NoBuiltin);
}
void CodeGenModule::AddUsedGlobal(llvm::GlobalValue *GV) {