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| author | Andrew Trick <atrick@apple.com> | 2011-05-20 18:25:42 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-05-20 18:25:42 +0000 |
| commit | f85092c25525f75eef6982ffa40c9b48b87da987 (patch) | |
| tree | 1db3646c4f121e6e75f48a399caf4a3ffeebc759 /lib/Transforms/Scalar/LoopStrengthReduce.cpp | |
| parent | cde87e2377bd3853d1485db27b295616066d020d (diff) | |
| download | llvm-f85092c25525f75eef6982ffa40c9b48b87da987.tar.gz llvm-f85092c25525f75eef6982ffa40c9b48b87da987.tar.bz2 llvm-f85092c25525f75eef6982ffa40c9b48b87da987.tar.xz | |
indvars: Prototyping Sign/ZeroExtend elimination without canonical IVs.
No functionality enabled by default. Use -disable-iv-rewrite.
Extended IVUsers to keep track of the phi that represents the users' IV.
Added the WidenIV transform to replace a narrow IV with a wide IV
by doing a one-for-one replacement of IV users instead of expanding the
SCEV expressions. [sz]exts are removed and truncs are inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131744 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopStrengthReduce.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopStrengthReduce.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 886e1432ac..204ce36b8a 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -1804,7 +1804,8 @@ LSRInstance::OptimizeLoopTermCond() { ExitingBlock->getInstList().insert(TermBr, Cond); // Clone the IVUse, as the old use still exists! - CondUse = &IU.AddUser(Cond, CondUse->getOperandValToReplace()); + CondUse = &IU.AddUser(Cond, CondUse->getOperandValToReplace(), + CondUse->getPhi()); TermBr->replaceUsesOfWith(OldCond, Cond); } } |