[llvm-commits] [llvm] r112632 - /llvm/trunk/lib/CodeGen/RegAllocFast.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Tue Aug 31 14:54:25 2010
New Revision: 112632

URL: http://llvm.org/viewvc/llvm-project?rev=112632&view=rev
Log:
Ignore unallocatable registers in RegAllocFast.

Modified:
    llvm/trunk/lib/CodeGen/RegAllocFast.cpp

Modified: llvm/trunk/lib/CodeGen/RegAllocFast.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocFast.cpp?rev=112632&r1=112631&r2=112632&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocFast.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocFast.cpp Tue Aug 31 14:54:25 2010
@@ -736,7 +736,8 @@
   // Add live-in registers as live.
   for (MachineBasicBlock::livein_iterator I = MBB->livein_begin(),
          E = MBB->livein_end(); I != E; ++I)
-    definePhysReg(MII, *I, regReserved);
+    if (Allocatable.test(*I))
+      definePhysReg(MII, *I, regReserved);
 
   SmallVector<unsigned, 8> VirtDead;
   SmallVector<MachineInstr*, 32> Coalesced;