look at the right operand when increasing the size of an asm output,

this fixes http://llvm.org/bugs/show_bug.cgi?id=3373#c20

llvm-svn: 70685

clang/lib/CodeGen/CGStmt.cpp

@@ -848,10 +848,8 @@ void CodeGenFunction::EmitAsmStmt(const AsmStmt &S) {
         for (InputNo = 0; InputNo != S.getNumInputs(); ++InputNo) {
           TargetInfo::ConstraintInfo &Input = InputConstraintInfos[InputNo];
           if (Input.hasTiedOperand() &&
-              Input.getTiedOperand() == i) {
-            InputNo = i;
+              Input.getTiedOperand() == i)
             break;
-          }
         }
         assert(InputNo != S.getNumInputs() && "Didn't find matching input!");
         

clang/test/CodeGen/asm.c

@@ -77,6 +77,19 @@ unsigned char t13(unsigned input) {
   return output;
 }
 
+struct large {
+  int x[1000];
+};
+
+unsigned long t15(int x, struct large *P) {
+  __asm__("xyz "
+          : "=r" (x)
+          : "m" (*P), "0" (x));
+  return x;
+}
+
+
+
 
 // bitfield destination of an asm.
 struct S {