[llvm-commits] [llvm] r117572 - /llvm/trunk/lib/Target/TargetRegisterInfo.cpp

[Benjamin Kramer]

Author: d0k
Date: Thu Oct 28 13:41:23 2010
New Revision: 117572

URL: http://llvm.org/viewvc/llvm-project?rev=117572&view=rev
Log:
Reduce malloc thrashing.

Modified:
    llvm/trunk/lib/Target/TargetRegisterInfo.cpp

Modified: llvm/trunk/lib/Target/TargetRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/TargetRegisterInfo.cpp?rev=117572&r1=117571&r2=117572&view=diff
==============================================================================
--- llvm/trunk/lib/Target/TargetRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/TargetRegisterInfo.cpp Thu Oct 28 13:41:23 2010
@@ -82,7 +82,7 @@
 
   // Mask out the reserved registers
   BitVector Reserved = getReservedRegs(MF);
-  Allocatable ^= Reserved & Allocatable;
+  Allocatable &= Reserved.flip();
 
   return Allocatable;
 }