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| author | Evan Cheng <evan.cheng@apple.com> | 2010-04-08 20:02:37 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-04-08 20:02:37 +0000 |
| commit | a57fabe815ccf016eead526eb3ef475f116ab155 (patch) | |
| tree | c5766e5dbbe4131e812a643263b6355ff962132e /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | b8db3c2c507cc115ed773209eae6cb8b89db1586 (diff) | |
Coalescer should not delete copy instructions whose defs are partially dead. e.g.
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100804 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 15ca3740b8..1f9d726143 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -2744,7 +2744,7 @@ bool SimpleRegisterCoalescing::runOnMachineFunction(MachineFunction &fn) { // delete them later. DoDelete = false; } - if (MI->registerDefIsDead(DstReg)) { + if (MI->allDefsAreDead()) { LiveInterval &li = li_->getInterval(DstReg); if (!ShortenDeadCopySrcLiveRange(li, MI)) ShortenDeadCopyLiveRange(li, MI); |