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| author | Bill Wendling <isanbard@gmail.com> | 2009-12-17 23:42:32 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2009-12-17 23:42:32 +0000 |
| commit | 819c356a09455ef232346dbdcbe5d1ab762fd42e (patch) | |
| tree | 160871f5266327673b063e0657aba0c1a75ee449 /llvm/lib/CodeGen/StrongPHIElimination.cpp | |
| parent | 90d3bb943e8f9d579343375069bfcc38fe8c3bb2 (diff) | |
| download | bcm5719-llvm-819c356a09455ef232346dbdcbe5d1ab762fd42e.tar.gz bcm5719-llvm-819c356a09455ef232346dbdcbe5d1ab762fd42e.zip | |
Turn off critical edge splitting for landing pads. The introduction of a
non-landing pad basic block as the successor to a block that ends in an
unconditional jump will cause block folding to remove the added block as a
successor. Thus eventually removing it AND the landing pad entirely. Critical
edge splitting is an optimization, so we can safely turn it off when dealing
with landing pads.
llvm-svn: 91634
Diffstat (limited to 'llvm/lib/CodeGen/StrongPHIElimination.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/StrongPHIElimination.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/StrongPHIElimination.cpp b/llvm/lib/CodeGen/StrongPHIElimination.cpp index 3c139068e68..345e22835ec 100644 --- a/llvm/lib/CodeGen/StrongPHIElimination.cpp +++ b/llvm/lib/CodeGen/StrongPHIElimination.cpp @@ -907,7 +907,7 @@ bool StrongPHIElimination::runOnMachineFunction(MachineFunction &Fn) { // Determine which phi node operands need copies for (MachineFunction::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) - if (!I->empty() && + if (!I->empty() && !I->isLandingPad() && I->begin()->getOpcode() == TargetInstrInfo::PHI) processBlock(I); |
