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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-10 23:08:54 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-10 23:08:54 +0000 |
| commit | fdb78f8baee78909c8003d5dff92dee76d50c6d0 (patch) | |
| tree | c63ac64436718a1cf3c0073b0bb2145401a638d5 /llvm/lib/Transforms | |
| parent | 20d252c4c1bb982555457cd8df72cfd28523da27 (diff) | |
| download | bcm5719-llvm-fdb78f8baee78909c8003d5dff92dee76d50c6d0.tar.gz bcm5719-llvm-fdb78f8baee78909c8003d5dff92dee76d50c6d0.zip | |
InstCombine: fdiv -x, -y -> fdiv x, y
llvm-svn: 291611
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp index ac64671725f..04f03844ea6 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp @@ -1443,6 +1443,16 @@ Instruction *InstCombiner::visitFDiv(BinaryOperator &I) { } } + Value *LHS; + Value *RHS; + + // -x / -y -> x / y + if (match(Op0, m_FNeg(m_Value(LHS))) && match(Op1, m_FNeg(m_Value(RHS)))) { + I.setOperand(0, LHS); + I.setOperand(1, RHS); + return &I; + } + return nullptr; } |
