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Ignore unallocatable registers in RegAllocFast.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112632 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-08-31 19:54:25 +00:00
parent 81b79b5fa8
commit 9d4b51b696
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/RegAllocFast.cpp
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@ -736,7 +736,8 @@ void RAFast::AllocateBasicBlock() {
// 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;