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| author | Duncan Sands <baldrick@free.fr> | 2009-05-06 06:49:50 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2009-05-06 06:49:50 +0000 |
| commit | 1efabaaa2ad2a90bb2fe7f79461353b5f1ea63e8 (patch) | |
| tree | 719834c43dbeab5fa7413c1e2a259167fc6307b0 /llvm/lib/Transforms/Scalar/TailDuplication.cpp | |
| parent | 51f57a419581f772fb06e4c27128e702373177d9 (diff) | |
| download | bcm5719-llvm-1efabaaa2ad2a90bb2fe7f79461353b5f1ea63e8.tar.gz bcm5719-llvm-1efabaaa2ad2a90bb2fe7f79461353b5f1ea63e8.zip | |
Allow readonly functions to unwind exceptions. Teach
the optimizers about this. For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.
llvm-svn: 71071
Diffstat (limited to 'llvm/lib/Transforms/Scalar/TailDuplication.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/TailDuplication.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/TailDuplication.cpp b/llvm/lib/Transforms/Scalar/TailDuplication.cpp index 78690699bd5..99a7dee3988 100644 --- a/llvm/lib/Transforms/Scalar/TailDuplication.cpp +++ b/llvm/lib/Transforms/Scalar/TailDuplication.cpp @@ -258,7 +258,7 @@ void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) { while (!isa<TerminatorInst>(BBI)) { Instruction *I = BBI++; - bool CanHoist = !I->isTrapping() && !I->mayWriteToMemory(); + bool CanHoist = !I->isTrapping() && !I->mayHaveSideEffects(); if (CanHoist) { for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op) if (Instruction *OpI = dyn_cast<Instruction>(I->getOperand(op))) |
