diff options
| -rw-r--r-- | lib/Transforms/Vectorize/BBVectorize.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/Transforms/Vectorize/BBVectorize.cpp b/lib/Transforms/Vectorize/BBVectorize.cpp index 61e8d73..95b7832 100644 --- a/lib/Transforms/Vectorize/BBVectorize.cpp +++ b/lib/Transforms/Vectorize/BBVectorize.cpp @@ -817,6 +817,15 @@ namespace { IAddressSpace); if (VCost > ICost + JCost) return false; + + // FIXME: We don't want to fuse to a type that will be split, even + // if the two input types will also be split and there is no other + // associated cost. This check depends on the fact + // that the current implementation of getMemoryOpCost returns only + // the type-splitting cost. + if (VCost > 1) + return false; + CostSavings = ICost + JCost - VCost; } } else { @@ -831,6 +840,16 @@ namespace { if (VCost > ICost + JCost) return false; + + // FIXME: We don't want to fuse to a type that will be split, even + // if the two input types will also be split and there is no other + // associated cost. This check depends on the fact + // that the current implementation of getMemoryOpCost returns only + // the type-splitting cost (and does nothing else). + unsigned VTypeCost = VTTI->getMemoryOpCost(I->getOpcode(), VT1, 0, 0); + if (VTypeCost > 1) + return false; + CostSavings = ICost + JCost - VCost; } |