Add returns_twice to functions that are known to return twice. This implements
the same behavior of gcc by keeping the attribute out of the function type.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index f52abef..6ae2d0c 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -729,6 +729,8 @@
// FIXME: handle sseregparm someday...
if (TargetDecl) {
+ if (TargetDecl->hasAttr<ReturnsTwiceAttr>())
+ FuncAttrs |= llvm::Attribute::ReturnsTwice;
if (TargetDecl->hasAttr<NoThrowAttr>())
FuncAttrs |= llvm::Attribute::NoUnwind;
else if (const FunctionDecl *Fn = dyn_cast<FunctionDecl>(TargetDecl)) {