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Remember to filter out reserved rergisters from the allocation order.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121411 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-12-09 21:20:46 +00:00
parent a0382c6290
commit ff092faffb
1 changed files with 1 additions and 1 deletions
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lib/CodeGen/RegAllocGreedy.cpp
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@ -165,7 +165,7 @@ bool RAGreedy::reassignVReg(LiveInterval &InterferingVReg,
E = TRC->allocation_order_end(*MF);
I != E; ++I) {
unsigned PhysReg = *I;
if (PhysReg == OldPhysReg)
if (PhysReg == OldPhysReg || ReservedRegs.test(PhysReg))
continue;
// Instantiate a "subquery", not to be confused with the Queries array.