[llvm-commits] [llvm] r134189 - in /llvm/trunk: include/llvm/CodeGen/MachineInstr.h lib/CodeGen/InlineSpiller.cpp

[Rafael Espindola]

Author: rafael
Date: Thu Jun 30 16:15:52 2011
New Revision: 134189

URL: http://llvm.org/viewvc/llvm-project?rev=134189&view=rev
Log:
Create a isFullCopy predicate.

Modified:
    llvm/trunk/include/llvm/CodeGen/MachineInstr.h
    llvm/trunk/lib/CodeGen/InlineSpiller.cpp

Modified: llvm/trunk/include/llvm/CodeGen/MachineInstr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineInstr.h?rev=134189&r1=134188&r2=134189&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/MachineInstr.h (original)
+++ llvm/trunk/include/llvm/CodeGen/MachineInstr.h Thu Jun 30 16:15:52 2011
@@ -278,6 +278,9 @@
   bool isCopy() const {
     return getOpcode() == TargetOpcode::COPY;
   }
+  bool isFullCopy() const {
+    return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg();
+  }
 
   /// isCopyLike - Return true if the instruction behaves like a copy.
   /// This does not include native copy instructions.

Modified: llvm/trunk/lib/CodeGen/InlineSpiller.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/InlineSpiller.cpp?rev=134189&r1=134188&r2=134189&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/InlineSpiller.cpp (original)
+++ llvm/trunk/lib/CodeGen/InlineSpiller.cpp Thu Jun 30 16:15:52 2011
@@ -180,11 +180,7 @@
 /// isFullCopyOf - If MI is a COPY to or from Reg, return the other register,
 /// otherwise return 0.
 static unsigned isFullCopyOf(const MachineInstr *MI, unsigned Reg) {
-  if (!MI->isCopy())
-    return 0;
-  if (MI->getOperand(0).getSubReg() != 0)
-    return 0;
-  if (MI->getOperand(1).getSubReg() != 0)
+  if (!MI->isFullCopy())
     return 0;
   if (MI->getOperand(0).getReg() == Reg)
       return MI->getOperand(1).getReg();