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| author | Evan Cheng <evan.cheng@apple.com> | 2009-02-05 22:24:17 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-05 22:24:17 +0000 |
| commit | 54801f78b1ed0078a4c07cbb5472830335987f66 (patch) | |
| tree | 7f149d383f48785f1b8deeb4251e203a4824dfc2 /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | 3484c09e0da3c05c8a78946e090c7610208d937b (diff) | |
isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable.
This fixes sse.expandfft and sse.stepfft.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 28d249235d..f09eee64b2 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -558,6 +558,9 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt, const TargetInstrDesc &TID = DefMI->getDesc(); if (!TID.isAsCheapAsAMove()) return false; + if (!DefMI->getDesc().isRematerializable() || + !tii_->isTriviallyReMaterializable(DefMI)) + return false; bool SawStore = false; if (!DefMI->isSafeToMove(tii_, SawStore)) return false; |