From 6100ae120c5d8e3b61e6c17426c84e0a27b90a5c Mon Sep 17 00:00:00 2001
From: Chad Rosier <mcrosier@apple.com>
Date: Mon, 27 Aug 2012 23:47:56 +0000
Subject: [PATCH] [ms-inline asm] Add virtual function, getClobber, that
 returns a StringRef. More work towards unifying asm stmt codegen.

llvm-svn: 162712
---
 clang/include/clang/AST/Stmt.h | 2 ++
 clang/lib/AST/Stmt.cpp         | 4 ++++
 clang/lib/CodeGen/CGStmt.cpp   | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/clang/include/clang/AST/Stmt.h b/clang/include/clang/AST/Stmt.h
index 81eac33655c4..3c060bab999a 100644
--- a/clang/include/clang/AST/Stmt.h
+++ b/clang/include/clang/AST/Stmt.h
@@ -1444,6 +1444,7 @@ public:
   //===--- Other ---===//
 
   unsigned getNumClobbers() const { return NumClobbers; }
+  virtual StringRef getClobber(unsigned i) const = 0;
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == GCCAsmStmtClass ||
@@ -1645,6 +1646,7 @@ public:
   /// This returns -1 if the operand name is invalid.
   int getNamedOperand(StringRef SymbolicName) const;
 
+  StringRef getClobber(unsigned i) const;
   StringLiteral *getClobberStringLiteral(unsigned i) { return Clobbers[i]; }
   const StringLiteral *getClobberStringLiteral(unsigned i) const {
     return Clobbers[i];
diff --git a/clang/lib/AST/Stmt.cpp b/clang/lib/AST/Stmt.cpp
index 94aec949989f..fc66202c4aa7 100644
--- a/clang/lib/AST/Stmt.cpp
+++ b/clang/lib/AST/Stmt.cpp
@@ -321,6 +321,10 @@ bool Stmt::hasImplicitControlFlow() const {
   }
 }
 
+StringRef GCCAsmStmt::getClobber(unsigned i) const {
+  return getClobberStringLiteral(i)->getString();
+}
+
 Expr *GCCAsmStmt::getOutputExpr(unsigned i) {
   return cast<Expr>(Exprs[i]);
 }
diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index 3ebfbddba444..646d820add44 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -1581,7 +1581,7 @@ void CodeGenFunction::EmitGCCAsmStmt(const GCCAsmStmt &S) {
 
   // Clobbers
   for (unsigned i = 0, e = S.getNumClobbers(); i != e; i++) {
-    StringRef Clobber = S.getClobberStringLiteral(i)->getString();
+    StringRef Clobber = S.getClobber(i);
 
     if (Clobber != "memory" && Clobber != "cc")
     Clobber = Target.getNormalizedGCCRegisterName(Clobber);