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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-10-02 10:37:37 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-10-02 10:37:37 +0000 |
| commit | 11357d4f40b2b4101ca39c79574171e058866227 (patch) | |
| tree | 32d9af844607c6da907ba0cd694748e4b69bc233 /lib | |
| parent | 267236ade35200fec4bea0985d7523dacfdb457d (diff) | |
| download | llvm-11357d4f40b2b4101ca39c79574171e058866227.tar.gz llvm-11357d4f40b2b4101ca39c79574171e058866227.tar.bz2 llvm-11357d4f40b2b4101ca39c79574171e058866227.tar.xz | |
Add a new icmp+select optz'n. Also shows off the load(cst) folding added in
r140966.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140969 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineSelect.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineSelect.cpp b/lib/Transforms/InstCombine/InstCombineSelect.cpp index ae42d526ae..91e60a4fb2 100644 --- a/lib/Transforms/InstCombine/InstCombineSelect.cpp +++ b/lib/Transforms/InstCombine/InstCombineSelect.cpp @@ -482,10 +482,16 @@ Instruction *InstCombiner::visitSelectInstWithICmp(SelectInst &SI, if (SimplifyWithOpReplaced(FalseVal, CmpLHS, CmpRHS, TD) == TrueVal || SimplifyWithOpReplaced(FalseVal, CmpRHS, CmpLHS, TD) == TrueVal) return ReplaceInstUsesWith(SI, FalseVal); + if (SimplifyWithOpReplaced(TrueVal, CmpLHS, CmpRHS, TD) == FalseVal || + SimplifyWithOpReplaced(TrueVal, CmpRHS, CmpLHS, TD) == FalseVal) + return ReplaceInstUsesWith(SI, FalseVal); } else if (Pred == ICmpInst::ICMP_NE) { if (SimplifyWithOpReplaced(TrueVal, CmpLHS, CmpRHS, TD) == FalseVal || SimplifyWithOpReplaced(TrueVal, CmpRHS, CmpLHS, TD) == FalseVal) return ReplaceInstUsesWith(SI, TrueVal); + if (SimplifyWithOpReplaced(FalseVal, CmpLHS, CmpRHS, TD) == TrueVal || + SimplifyWithOpReplaced(FalseVal, CmpRHS, CmpLHS, TD) == TrueVal) + return ReplaceInstUsesWith(SI, TrueVal); } // NOTE: if we wanted to, this is where to detect integer MIN/MAX |