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| author | Cameron Zwarich <zwarich@apple.com> | 2011-05-27 05:04:51 +0000 |
|---|---|---|
| committer | Cameron Zwarich <zwarich@apple.com> | 2011-05-27 05:04:51 +0000 |
| commit | f031d0977f8b03288ed32ff14f71c79e81914f39 (patch) | |
| tree | dc6f0709486977f478b45d40f809459f390efc9b /lib/CodeGen/UnreachableBlockElim.cpp | |
| parent | 3a5d7d0665e2c836fb7619ea1160b29c36827c4a (diff) | |
Fix PR10029 - VerifyCoalescing failure on patterns_dfa.c of 445.gobmk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132181 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/UnreachableBlockElim.cpp')
| -rw-r--r-- | lib/CodeGen/UnreachableBlockElim.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/CodeGen/UnreachableBlockElim.cpp b/lib/CodeGen/UnreachableBlockElim.cpp index 48d8ab1658..52693f03e8 100644 --- a/lib/CodeGen/UnreachableBlockElim.cpp +++ b/lib/CodeGen/UnreachableBlockElim.cpp @@ -196,8 +196,11 @@ bool UnreachableMachineBlockElim::runOnMachineFunction(MachineFunction &F) { temp->eraseFromParent(); ModifiedPHI = true; - if (Input != Output) - F.getRegInfo().replaceRegWith(Output, Input); + if (Input != Output) { + MachineRegisterInfo &MRI = F.getRegInfo(); + MRI.constrainRegClass(Input, MRI.getRegClass(Output)); + MRI.replaceRegWith(Output, Input); + } continue; } |