commit ff092faffb85410b0013fb70bc991bb98b5663a5
author Jakob Stoklund Olesen <stoklund@2pi.dk> Thu Dec 09 21:20:46 2010 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Thu Dec 09 21:20:46 2010 +0000
tree 940a3b079cbb20294eeada201cd85770b8f7d511
parent a0382c629093a2edd175dc256750667c296d3a43

Remember to filter out reserved rergisters from the allocation order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121411 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/RegAllocGreedy.cpp

diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index eae4ccc..3c166ba 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -165,7 +165,7 @@
          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.