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Document 'mask' in this calculation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53454 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -5498,6 +5498,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
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case Instruction::Mul:
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0I->getOperand(1))) {
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// a * Cst icmp eq/ne b * Cst --> a & Mask icmp b & Mask
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// Mask = -1 >> count-trailing-zeros(Cst).
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if (!CI->isZero() && !CI->isOne()) {
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const APInt &AP = CI->getValue();
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ConstantInt *Mask = ConstantInt::get(
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