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Add support for cast ... to bool in visitCastInst (it's a start, anyways...) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4883 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -641,9 +641,20 @@ ISel::visitCastInst (CastInst &CI)
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//the former is that the register allocator could use any register it wants,
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//but for now this obviously doesn't matter. :)
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// if target type is bool
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// Emit Compare
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// Emit Set-if-not-zero
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Type *targetType = CI.getType ();
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Value *operand = CI.getOperand (0);
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unsigned int operandReg = getReg (operand);
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Type *sourceType = operand->getType ();
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unsigned int destReg = getReg (CI);
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// cast to bool:
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if (targetType == Type::BoolTy) {
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// Emit Compare
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BuildMI (BB, X86::CMPri8, 2).addReg (operandReg).addZImm (0);
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// Emit Set-if-not-zero
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BuildMI (BB, X86::SETNEr, 1, destReg);
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return;
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}
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// if size of target type == size of source type
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// Emit Mov reg(target) <- reg(source)
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@ -641,9 +641,20 @@ ISel::visitCastInst (CastInst &CI)
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//the former is that the register allocator could use any register it wants,
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//but for now this obviously doesn't matter. :)
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// if target type is bool
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// Emit Compare
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// Emit Set-if-not-zero
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Type *targetType = CI.getType ();
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Value *operand = CI.getOperand (0);
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unsigned int operandReg = getReg (operand);
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Type *sourceType = operand->getType ();
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unsigned int destReg = getReg (CI);
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// cast to bool:
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if (targetType == Type::BoolTy) {
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// Emit Compare
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BuildMI (BB, X86::CMPri8, 2).addReg (operandReg).addZImm (0);
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// Emit Set-if-not-zero
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BuildMI (BB, X86::SETNEr, 1, destReg);
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return;
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}
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// if size of target type == size of source type
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// Emit Mov reg(target) <- reg(source)
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