From 8a39c807e2c95ea5e2c46617441f9a56bf1e702b Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Fri, 16 Jul 2010 16:39:00 +0000 Subject: Remove the rest of my instcombine changes. Back to the drawing board on this one. llvm-svn: 108530 --- .../Transforms/InstCombine/InstCombineSelect.cpp | 28 ---------------------- 1 file changed, 28 deletions(-) (limited to 'llvm/lib/Transforms') diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp index f9ffdb10f26..c44fe9db6e3 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp @@ -699,34 +699,6 @@ Instruction *InstCombiner::visitSelectInst(SelectInst &SI) { SI.setOperand(2, TrueVal); return &SI; } - - // select (A == 0 | B == 0), T, F--> select (A != 0 & B != 0), F, T - // Note: This is a canonicalization rather than an optimization, and is used - // to expose opportunities to other instcombine transforms. - Instruction* CondInst = dyn_cast(CondVal); - if (CondInst && CondInst->hasOneUse() && - CondInst->getOpcode() == Instruction::Or) { - ICmpInst *LHSCmp = dyn_cast(CondInst->getOperand(0)); - ICmpInst *RHSCmp = dyn_cast(CondInst->getOperand(1)); - if (LHSCmp && LHSCmp->hasOneUse() && - LHSCmp->getPredicate() == ICmpInst::ICMP_EQ && - RHSCmp && RHSCmp->hasOneUse() && - RHSCmp->getPredicate() == ICmpInst::ICMP_EQ) { - ConstantInt* C1 = dyn_cast(LHSCmp->getOperand(1)); - ConstantInt* C2 = dyn_cast(RHSCmp->getOperand(1)); - if (C1 && C1->isZero() && C2 && C2->isZero()) { - LHSCmp->setPredicate(ICmpInst::ICMP_NE); - RHSCmp->setPredicate(ICmpInst::ICMP_NE); - Value *And = - InsertNewInstBefore(BinaryOperator::CreateAnd(LHSCmp, RHSCmp, - "and."+CondVal->getName()), SI); - SI.setOperand(0, And); - SI.setOperand(1, FalseVal); - SI.setOperand(2, TrueVal); - return &SI; - } - } - } return 0; } -- cgit v1.2.3