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| author | Eric Christopher <echristo@apple.com> | 2011-03-08 19:35:47 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2011-03-08 19:35:47 +0000 |
| commit | 29449448b0f0420dfcf52e278fc01adbf1690d70 (patch) | |
| tree | fb727fe43b7083b57e6179c3efdc22573b963285 /lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp | |
| parent | 4cdcb362891e3f945171df822174768b392986ed (diff) | |
| download | llvm-29449448b0f0420dfcf52e278fc01adbf1690d70.tar.gz llvm-29449448b0f0420dfcf52e278fc01adbf1690d70.tar.bz2 llvm-29449448b0f0420dfcf52e278fc01adbf1690d70.tar.xz | |
Fix some latent bugs if the nodes are unschedulable. We'd gotten away
with this before since none of the register tracking or nightly tests
had unschedulable nodes.
This should probably be refixed with a special default Node that just
returns some "don't touch me" values.
Fixes PR9427
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127263 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp index 67005d7e63..b762af5ca9 100644 --- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp +++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp @@ -446,6 +446,10 @@ void ScheduleDAGSDNodes::BuildSchedGraph(AliasAnalysis *AA) { // Initialize NumNodeDefs for the current Node's opcode. void ScheduleDAGSDNodes::RegDefIter::InitNodeNumDefs() { + // Check for phys reg copy. + if (!Node) + return; + if (!Node->isMachineOpcode()) { if (Node->getOpcode() == ISD::CopyFromReg) NodeNumDefs = 1; |