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| author | Evan Cheng <evan.cheng@apple.com> | 2010-04-21 20:57:54 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-04-21 20:57:54 +0000 |
| commit | e3dd8550c6c65d02b067ec96ac12a560dabd4452 (patch) | |
| tree | 7bb16bfe2aeabb359aa753205572c7f05710805e /lib | |
| parent | 708e474c2ff2922786a9ea6562772d2f271dec28 (diff) | |
| download | llvm-e3dd8550c6c65d02b067ec96ac12a560dabd4452.tar.gz llvm-e3dd8550c6c65d02b067ec96ac12a560dabd4452.tar.bz2 llvm-e3dd8550c6c65d02b067ec96ac12a560dabd4452.tar.xz | |
Do not try to optimize a copy that has already been marked for deletion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102027 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 78011ed67f..543278b467 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -804,7 +804,8 @@ SimpleRegisterCoalescing::UpdateRegDefsUses(unsigned SrcReg, unsigned DstReg, CopySrcReg == SrcReg && CopyDstReg != UseDstReg) { // If the use is a copy and it won't be coalesced away, and its source // is defined by a trivial computation, try to rematerialize it instead. - if (ReMaterializeTrivialDef(li_->getInterval(SrcReg), CopyDstReg, + if (!JoinedCopies.count(UseMI) && + ReMaterializeTrivialDef(li_->getInterval(SrcReg), CopyDstReg, CopyDstSubIdx, UseMI)) continue; } |