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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 | 7af1c78b98d2df7d0ab9154461ca3d835706716e (patch) | |
| tree | 36e5d75294f6632cb5486c95675e0f2b6d13de86 /lib/Transforms/Scalar/TailRecursionElimination.cpp | |
| parent | e031e4bcb91ceafa2ddf0a7480a7135bdf5ebd57 (diff) | |
| download | llvm-7af1c78b98d2df7d0ab9154461ca3d835706716e.tar.gz llvm-7af1c78b98d2df7d0ab9154461ca3d835706716e.tar.bz2 llvm-7af1c78b98d2df7d0ab9154461ca3d835706716e.tar.xz | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71071 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/TailRecursionElimination.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/TailRecursionElimination.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/TailRecursionElimination.cpp b/lib/Transforms/Scalar/TailRecursionElimination.cpp index e1234efb57..682d069923 100644 --- a/lib/Transforms/Scalar/TailRecursionElimination.cpp +++ b/lib/Transforms/Scalar/TailRecursionElimination.cpp @@ -201,7 +201,7 @@ bool TailCallElim::runOnFunction(Function &F) { bool TailCallElim::CanMoveAboveCall(Instruction *I, CallInst *CI) { // FIXME: We can move load/store/call/free instructions above the call if the // call does not mod/ref the memory location being processed. - if (I->mayWriteToMemory() || isa<LoadInst>(I)) + if (I->mayHaveSideEffects() || isa<LoadInst>(I)) return false; // Otherwise, if this is a side-effect free instruction, check to make sure |