Make global named registers internal variables
llvm-svn: 209289
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index fe735dc..99547f8 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -7874,6 +7874,9 @@
if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
if (!VD->isFileVarDecl())
return false;
+ // Global named register variables (GNU extension) are never emitted.
+ if (VD->getStorageClass() == SC_Register)
+ return false;
} else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
// We never need to emit an uninstantiated function template.
if (FD->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate)