commit 580bba2b0dd2173c899699a87e109bfd1482c001
author Jakob Stoklund Olesen <stoklund@2pi.dk> Fri Mar 05 21:49:10 2010 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Fri Mar 05 21:49:10 2010 +0000
tree d3c34ca97f7926daff5bb2626cfd94b94f3876f0
parent 8d50ea760322630dbb9ab6436ca356b279adee10

Avoid creating bad PHI instructions when BR is being const-folded.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index f426fb1..05f9f1f 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1038,6 +1038,8 @@
       MachineInstr *PHI = SDB->PHINodesToUpdate[i].first;
       assert(PHI->isPHI() &&
              "This is not a machine PHI node that we are updating!");
+      if (!BB->isSuccessor(PHI->getParent()))
+        continue;
       PHI->addOperand(MachineOperand::CreateReg(SDB->PHINodesToUpdate[i].second,
                                                 false));
       PHI->addOperand(MachineOperand::CreateMBB(BB));