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| author | Bill Wendling <isanbard@gmail.com> | 2013-05-14 18:30:01 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2013-05-14 18:30:01 +0000 |
| commit | 06362e24503170d6f4b152681e4e05bef3a29af6 (patch) | |
| tree | fdfe574a1e4a12ab6a712bc751a00971109fb4c5 /lib | |
| parent | 30b015f044cd0157b68f5737321f685741c17423 (diff) | |
| download | llvm-06362e24503170d6f4b152681e4e05bef3a29af6.tar.gz llvm-06362e24503170d6f4b152681e4e05bef3a29af6.tar.bz2 llvm-06362e24503170d6f4b152681e4e05bef3a29af6.tar.xz | |
Merging r181586:
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r181586 | d0k | 2013-05-10 02:16:52 -0700 (Fri, 10 May 2013) | 3 lines
InstCombine: Verify the type before transforming uitofp into select.
PR15952.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@181813 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineMulDivRem.cpp | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp index 0ac0ca27ac..ecc9fc3e45 100644 --- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp +++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp @@ -525,31 +525,32 @@ Instruction *InstCombiner::visitFMul(BinaryOperator &I) { } // B * (uitofp i1 C) -> select C, B, 0 - if(I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) { - Value *LHS=Op0, *RHS=Op1; - Value *B, *C; - if (!match(RHS, m_UIToFp(m_Value(C)))) - std::swap(LHS, RHS); - - if (match(RHS, m_UIToFp(m_Value(C)))) { - B=LHS; - Value *Zero = ConstantFP::getNegativeZero(B->getType()); - return SelectInst::Create(C, B, Zero); - } + if (I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) { + Value *LHS = Op0, *RHS = Op1; + Value *B, *C; + if (!match(RHS, m_UIToFp(m_Value(C)))) + std::swap(LHS, RHS); + + if (match(RHS, m_UIToFp(m_Value(C))) && C->getType()->isIntegerTy(1)) { + B = LHS; + Value *Zero = ConstantFP::getNegativeZero(B->getType()); + return SelectInst::Create(C, B, Zero); + } } // A * (1 - uitofp i1 C) -> select C, 0, A - if(I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) { - Value *LHS=Op0, *RHS=Op1; - Value *A, *C; - if (!match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C))))) - std::swap(LHS, RHS); - - if (match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C))))) { - A=LHS; - Value *Zero = ConstantFP::getNegativeZero(A->getType()); - return SelectInst::Create(C, Zero, A); - } + if (I.hasNoNaNs() && I.hasNoInfs() && I.hasNoSignedZeros()) { + Value *LHS = Op0, *RHS = Op1; + Value *A, *C; + if (!match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C))))) + std::swap(LHS, RHS); + + if (match(RHS, m_FSub(m_FPOne(), m_UIToFp(m_Value(C)))) && + C->getType()->isIntegerTy(1)) { + A = LHS; + Value *Zero = ConstantFP::getNegativeZero(A->getType()); + return SelectInst::Create(C, Zero, A); + } } if (!isa<Constant>(Op1)) |