diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/IndVarSimplify.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp index 75fa011a14..874a135110 100644 --- a/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -1680,11 +1680,12 @@ void IndVarSimplify::SinkUnusedInvariants(Loop *L) { if (isa<LandingPadInst>(I)) continue; - // Don't sink static AllocaInsts out of the entry block, which would - // turn them into dynamic allocas! - if (AllocaInst *AI = dyn_cast<AllocaInst>(I)) - if (AI->isStaticAlloca()) - continue; + // Don't sink alloca: we never want to sink static alloca's out of the + // entry block, and correctly sinking dynamic alloca's requires + // checks for stacksave/stackrestore intrinsics. + // FIXME: Refactor this check somehow? + if (isa<AllocaInst>(I)) + continue; // Determine if there is a use in or before the loop (direct or // otherwise). |