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author | Bob Wilson <bob.wilson@apple.com> | 2009-12-08 18:22:03 +0000 |
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committer | Bob Wilson <bob.wilson@apple.com> | 2009-12-08 18:22:03 +0000 |
commit | 78c50b8cd68d266d4ed6f8eca443cf8142a01204 (patch) | |
tree | dca14bd12b812f26506e31b600f0d557a724bc9a /lib/Transforms/Scalar/ScalarReplAggregates.cpp | |
parent | a3a60c6c49e457d825bddd1d300230c9d82cc17e (diff) | |
download | llvm-78c50b8cd68d266d4ed6f8eca443cf8142a01204.tar.gz llvm-78c50b8cd68d266d4ed6f8eca443cf8142a01204.tar.bz2 llvm-78c50b8cd68d266d4ed6f8eca443cf8142a01204.tar.xz |
Clean up dead operands left around after SROA replaces a mem intrinsic.
I'm not aware that this does anything significant on its own, but it's
needed for another patch that I'm working on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90864 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/ScalarReplAggregates.cpp')
-rw-r--r-- | lib/Transforms/Scalar/ScalarReplAggregates.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp index b0008a446b..abd4a77d34 100644 --- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp +++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp @@ -769,6 +769,10 @@ void SROA::RewriteMemIntrinUserOfAlloca(MemIntrinsic *MI, Instruction *BCInst, OtherPtr = MTI->getRawDest(); } } + + // Keep track of the other intrinsic argument, so it can be removed if it + // is dead when the intrinsic is replaced. + Value *PossiblyDead = OtherPtr; // If there is an other pointer, we want to convert it to the same pointer // type as AI has, so we can GEP through it safely. @@ -922,6 +926,8 @@ void SROA::RewriteMemIntrinUserOfAlloca(MemIntrinsic *MI, Instruction *BCInst, } } MI->eraseFromParent(); + if (PossiblyDead) + RecursivelyDeleteTriviallyDeadInstructions(PossiblyDead); } /// RewriteStoreUserOfWholeAlloca - We found a store of an integer that |