[llvm-commits] [llvm-gcc-4.2] r104804 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Bob Wilson]

Author: bwilson
Date: Thu May 27 00:29:41 2010
New Revision: 104804

URL: http://llvm.org/viewvc/llvm-project?rev=104804&view=rev
Log:
Avoid introducing an extra '=' in the constraint for an output register.
Fix a comment typo, too.

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=104804&r1=104803&r2=104804&view=diff
==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Thu May 27 00:29:41 2010
@@ -4730,12 +4730,11 @@
       if (RegNum >= 0) {
         RegName = LLVM_GET_REG_NAME(RegName, RegNum);
         unsigned RegNameLen = strlen(RegName);
-        char *NewConstraint = (char*)alloca(RegNameLen+4);
-        NewConstraint[0] = '=';
-        NewConstraint[1] = '{';
-        memcpy(NewConstraint+2, RegName, RegNameLen);
-        NewConstraint[RegNameLen+2] = '}';
-        NewConstraint[RegNameLen+3] = 0;
+        char *NewConstraint = (char*)alloca(RegNameLen+3);
+        NewConstraint[0] = '{';
+        memcpy(NewConstraint+1, RegName, RegNameLen);
+        NewConstraint[RegNameLen+1] = '}';
+        NewConstraint[RegNameLen+2] = 0;
         SimplifiedConstraint = NewConstraint;
         // This output will now be implicit; set the sideffect flag on the asm.
         HasSideEffects = true;
@@ -4889,7 +4888,7 @@
     if (isIndirect)
       ConstraintStr += '*';
 
-    // If this output register is pinned to a machine register, use that machine
+    // If this input register is pinned to a machine register, use that machine
     // register instead of the specified constraint.
     if (TREE_CODE(Val) == VAR_DECL && DECL_HARD_REGISTER(Val)) {
       const char *RegName = extractRegisterName(Val);