From de9399bf7656346d25ebbfad7bcbddc8ec1f378e Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@apple.com>
Date: Thu, 2 Jun 2011 23:16:42 +0000
Subject: Have LowerOperandForConstraint handle multiple character constraints.

Part of rdar://9119939

llvm-svn: 132510
---
 llvm/lib/Target/X86/X86ISelLowering.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 78205096790..a39e453dd2f 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -12594,12 +12594,16 @@ LowerXConstraint(EVT ConstraintVT) const {
 /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
 /// vector.  If it is invalid, don't add anything to Ops.
 void X86TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
-                                                     char Constraint,
+                                                     std::string &Constraint,
                                                      std::vector<SDValue>&Ops,
                                                      SelectionDAG &DAG) const {
   SDValue Result(0, 0);
 
-  switch (Constraint) {
+  // Only support length 1 constraints for now.
+  if (Constraint.length() > 1) return;
+  
+  char ConstraintLetter = Constraint[0];
+  switch (ConstraintLetter) {
   default: break;
   case 'I':
     if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
-- 
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