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Use Instruction::isCommutative instead of duplicating it.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96807 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-02-22 22:05:18 +00:00
parent 2ec5e49a2b
commit d97439d1e5
1 changed files with 1 additions and 24 deletions
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25
lib/VMCore/ConstantFold.cpp
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@ -1364,31 +1364,8 @@ Constant *llvm::ConstantFoldBinaryInstruction(unsigned Opcode,
} else if (isa<ConstantExpr>(C2)) {
// If C2 is a constant expr and C1 isn't, flop them around and fold the
// other way if possible.
switch (Opcode) {
case Instruction::Add:
case Instruction::FAdd:
case Instruction::Mul:
case Instruction::FMul:
case Instruction::And:
case Instruction::Or:
case Instruction::Xor:
// No change of opcode required.
if (Instruction::isCommutative(Opcode))
return ConstantFoldBinaryInstruction(Opcode, C2, C1);
case Instruction::Shl:
case Instruction::LShr:
case Instruction::AShr:
case Instruction::Sub:
case Instruction::FSub:
case Instruction::SDiv:
case Instruction::UDiv:
case Instruction::FDiv:
case Instruction::URem:
case Instruction::SRem:
case Instruction::FRem:
default: // These instructions cannot be flopped around.
break;
}
}
// i1 can be simplified in many cases.