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raw | patch | inline | side by side (parent: c41ae2a)
raw | patch | inline | side by side (parent: c41ae2a)
author | David Xu <David.Xu@arm.com> | |
Fri, 26 Sep 2014 02:28:03 +0000 (02:28 +0000) | ||
committer | David Xu <David.Xu@arm.com> | |
Fri, 26 Sep 2014 02:28:03 +0000 (02:28 +0000) |
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218494 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp | patch | blob | history |
index fdac0e27acedca96719a7ed4de9ae7d327449547..33e70593d154d06996b59a32665bc458e3aaa625 100644 (file)
return Chain;
}
}
- // If this is a store followed by a store with the same value to the same
- // location, then the store is dead/noop.
- if (StoreSDNode *ST1 = dyn_cast<StoreSDNode>(Chain)) {
- if (ST1->getBasePtr() == Ptr && ST->getMemoryVT() == ST1->getMemoryVT() &&
- ST1->getValue() == Value && ST->isUnindexed() && !ST->isVolatile() &&
- ST1->isUnindexed() &&
- !ST1->isVolatile() &&
- // There can't be any side effects between the two stores, such as
- // a call or store.
- Chain.reachesChainWithoutSideEffects(SDValue(ST1, 0))) {
- // The store is dead, remove it.
- return Chain;
- }
- }
// If this is an FP_ROUND or TRUNC followed by a store, fold this into a
// truncating store. We can do this even if this is already a truncstore.