[llvm-commits] [llvm] r55999 - /llvm/trunk/lib/Target/Target.td

[Dan Gohman]

Author: djg
Date: Tue Sep  9 13:25:28 2008
New Revision: 55999

URL: http://llvm.org/viewvc/llvm-project?rev=55999&view=rev
Log:
Mark IMPLICIT_DEF as being rematerializable and cheap-as-a-move.
It's already special-cased and treated as rematerializable within
LiveIntervals; this allows it to be handled by other passes
such as TwoAddressInstrctionPass.

Modified:
    llvm/trunk/lib/Target/Target.td

Modified: llvm/trunk/lib/Target/Target.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Target.td?rev=55999&r1=55998&r2=55999&view=diff

==============================================================================
--- llvm/trunk/lib/Target/Target.td (original)
+++ llvm/trunk/lib/Target/Target.td Tue Sep  9 13:25:28 2008
@@ -390,6 +390,8 @@
   let AsmString = "";
   let Namespace = "TargetInstrInfo";
   let neverHasSideEffects = 1;
+  let isReMaterializable = 1;
+  let isAsCheapAsAMove = 1;
 }
 def SUBREG_TO_REG : Instruction {
   let OutOperandList = (ops unknown:$dst);