diff options
| author | Bill Wendling <isanbard@gmail.com> | 2012-02-13 23:47:16 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2012-02-13 23:47:16 +0000 |
| commit | bdf9db6f4905fcbbcdbdfed328ea8b36b655dd45 (patch) | |
| tree | a6420a9aeb4e7244548266e1d8ae95cd1ef42291 /lib/CodeGen | |
| parent | 150a371569d100e14a438cd4f89904da24c6cb20 (diff) | |
Don't reserve the R0 and R1 registers here. We don't use these registers, and
marking them as "live-in" into a BB ruins some invariants that the back-end
tries to maintain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150437 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 091d223c31..1cf4decd43 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -1851,6 +1851,12 @@ void SelectionDAGBuilder::visitLandingPad(const LandingPadInst &LP) { MachineModuleInfo &MMI = DAG.getMachineFunction().getMMI(); AddLandingPadInfo(LP, MMI, MBB); + // If there aren't registers to copy the values into (e.g., during SjLj + // exceptions), then don't bother to create these DAG nodes. + if (TLI.getExceptionAddressRegister() == 0 && + TLI.getExceptionSelectorRegister() == 0) + return; + SmallVector<EVT, 2> ValueVTs; ComputeValueVTs(TLI, LP.getType(), ValueVTs); |