[llvm] r177228 - Remove PPC avoidWriteAfterWrite callback

[Hal Finkel]

Author: hfinkel
Date: Sat Mar 16 17:50:51 2013
New Revision: 177228

URL: http://llvm.org/viewvc/llvm-project?rev=177228&view=rev
Log:
Remove PPC avoidWriteAfterWrite callback

As a follow-up to r158719, remove PPCRegisterInfo::avoidWriteAfterWrite.
Jakob pointed out in response to r158719 that this callback is currently unused
and so this has no effect (and the speedups that I thought that I had observed
as a result of implementing this function must have been noise).

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp
    llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.h

Modified: llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp?rev=177228&r1=177227&r2=177228&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp Sat Mar 16 17:50:51 2013
@@ -163,20 +163,6 @@ PPCRegisterInfo::getRegPressureLimit(con
   }
 }
 
-bool
-PPCRegisterInfo::avoidWriteAfterWrite(const TargetRegisterClass *RC) const {
-  switch (RC->getID()) {
-  case PPC::G8RCRegClassID:
-  case PPC::GPRCRegClassID:
-  case PPC::F8RCRegClassID:
-  case PPC::F4RCRegClassID:
-  case PPC::VRRCRegClassID:
-    return true;
-  default:
-    return false;
-  }
-}
-
 //===----------------------------------------------------------------------===//
 // Stack Frame Processing methods
 //===----------------------------------------------------------------------===//

Modified: llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.h?rev=177228&r1=177227&r2=177228&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.h (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.h Sat Mar 16 17:50:51 2013
@@ -47,8 +47,6 @@ public:
 
   BitVector getReservedRegs(const MachineFunction &MF) const;
 
-  virtual bool avoidWriteAfterWrite(const TargetRegisterClass *RC) const;
-
   /// We require the register scavenger.
   bool requiresRegisterScavenging(const MachineFunction &MF) const {
     return true;