[llvm-commits] [llvm] r78398 - in /llvm/trunk/lib/Target/ARM: README-Thumb2.txt Thumb2InstrInfo.cpp

[Evan Cheng]

Author: evancheng
Date: Fri Aug  7 14:34:35 2009
New Revision: 78398

URL: http://llvm.org/viewvc/llvm-project?rev=78398&view=rev
Log:
Use 16-bit tMOVgpr2gpr instead of tMOVr to copy GPR registers in Thumb2 mode.

Modified:
    llvm/trunk/lib/Target/ARM/README-Thumb2.txt
    llvm/trunk/lib/Target/ARM/Thumb2InstrInfo.cpp

Modified: llvm/trunk/lib/Target/ARM/README-Thumb2.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/README-Thumb2.txt?rev=78398&r1=78397&r2=78398&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/README-Thumb2.txt (original)
+++ llvm/trunk/lib/Target/ARM/README-Thumb2.txt Fri Aug  7 14:34:35 2009
@@ -3,5 +3,3 @@
 //===---------------------------------------------------------------------===//
 
 We should be using ADD / SUB rd, sp, rm <shift> instructions.
-
-copyRegToReg should use tMOVgpr2gpr instead of t2MOVr?

Modified: llvm/trunk/lib/Target/ARM/Thumb2InstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/Thumb2InstrInfo.cpp?rev=78398&r1=78397&r2=78398&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/Thumb2InstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/ARM/Thumb2InstrInfo.cpp Fri Aug  7 14:34:35 2009
@@ -65,12 +65,7 @@
 
   if (DestRC == ARM::GPRRegisterClass &&
       SrcRC == ARM::GPRRegisterClass) {
-    // FIXME: Just use tMOVgpr2gpr since it's shorter?
-    if (SrcReg == ARM::SP || DestReg == ARM::SP)
-      BuildMI(MBB, I, DL, get(ARM::tMOVgpr2gpr), DestReg).addReg(SrcReg);
-    else
-      AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::t2MOVr),
-                                          DestReg).addReg(SrcReg)));
+    BuildMI(MBB, I, DL, get(ARM::tMOVgpr2gpr), DestReg).addReg(SrcReg);
     return true;
   } else if (DestRC == ARM::GPRRegisterClass &&
              SrcRC == ARM::tGPRRegisterClass) {