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| author | Andrew Trick <atrick@apple.com> | 2011-02-05 02:58:46 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-02-05 02:58:46 +0000 |
| commit | f841571404808167fe02f8e93f007e39d3bb309d (patch) | |
| tree | 36c0d5c88de0651f6db7b235376d70ae1fd7ae5d /llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp | |
| parent | 95e314260e7ae45fb099dc37cfaeeaddda676911 (diff) | |
| download | bcm5719-llvm-f841571404808167fe02f8e93f007e39d3bb309d.tar.gz bcm5719-llvm-f841571404808167fe02f8e93f007e39d3bb309d.zip | |
Fix an anti-dep breaker corner case.
<rdar://problem/8959122> illegal register operands for UMULL instruction in cfrac nightly test
I'm stil working on a unit test, but the case is:
rx = movcc rx, r3
r2 = ldr
r2, r3 = umull r2, r2
The anti-dep breaker should not convert this into an illegal instruction:
r2, r2 = umull
llvm-svn: 124932
Diffstat (limited to 'llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp index 4817346061f..7b2ce362417 100644 --- a/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -334,7 +334,6 @@ CriticalAntiDepBreaker::isNewRegModifiedByRefs(RegRefIter RegRefBegin, { for (RegRefIter I = RegRefBegin; I != RegRefEnd; ++I ) { MachineOperand *MO = I->second; - if (MO->isDef()) continue; if (MO->getParent()->modifiesRegister(NewReg, TRI)) return true; } |
