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Move isTrueWhenEqual to ICmpInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51215 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -741,6 +741,22 @@ public:
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/// @brief Determine if the predicate is signed.
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static bool isSignedPredicate(Predicate pred);
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/// @returns true if the specified compare predicate is
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/// true when both operands are equal...
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/// @brief Determine if the icmp is true when both operands are equal
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static bool isTrueWhenEqual(ICmpInst::Predicate pred) {
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return pred == ICmpInst::ICMP_EQ || pred == ICmpInst::ICMP_UGE ||
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pred == ICmpInst::ICMP_SGE || pred == ICmpInst::ICMP_ULE ||
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pred == ICmpInst::ICMP_SLE;
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}
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/// @returns true if the specified compare instruction is
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/// true when both operands are equal...
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/// @brief Determine if the ICmpInst returns true when both operands are equal
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bool isTrueWhenEqual() {
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return isTrueWhenEqual(getPredicate());
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}
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/// Initialize a set of values that all satisfy the predicate with C.
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/// @brief Make a ConstantRange for a relation with a constant value.
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static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
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@ -2056,22 +2056,6 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, uint64_t DemandedElts,
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return MadeChange ? I : 0;
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}
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/// @returns true if the specified compare predicate is
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/// true when both operands are equal...
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/// @brief Determine if the icmp Predicate is true when both operands are equal
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static bool isTrueWhenEqual(ICmpInst::Predicate pred) {
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return pred == ICmpInst::ICMP_EQ || pred == ICmpInst::ICMP_UGE ||
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pred == ICmpInst::ICMP_SGE || pred == ICmpInst::ICMP_ULE ||
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pred == ICmpInst::ICMP_SLE;
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}
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/// @returns true if the specified compare instruction is
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/// true when both operands are equal...
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/// @brief Determine if the ICmpInst returns true when both operands are equal
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static bool isTrueWhenEqual(ICmpInst &ICI) {
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return isTrueWhenEqual(ICI.getPredicate());
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}
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/// AssociativeOpt - Perform an optimization on an associative operator. This
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/// function is designed to check a chain of associative operators for a
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/// potential to apply a certain optimization. Since the optimization may be
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@ -5204,7 +5188,7 @@ Instruction *InstCombiner::FoldGEPICmp(User *GEPLHS, Value *RHS,
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if (NumDifferences == 0) // SAME GEP?
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return ReplaceInstUsesWith(I, // No comparison is needed here.
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ConstantInt::get(Type::Int1Ty,
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isTrueWhenEqual(Cond)));
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ICmpInst::isTrueWhenEqual(Cond)));
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else if (NumDifferences == 1) {
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Value *LHSV = GEPLHS->getOperand(DiffOperand);
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@ -5321,7 +5305,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
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// icmp X, X
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if (Op0 == Op1)
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return ReplaceInstUsesWith(I, ConstantInt::get(Type::Int1Ty,
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isTrueWhenEqual(I)));
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I.isTrueWhenEqual()));
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if (isa<UndefValue>(Op1)) // X icmp undef -> undef
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return ReplaceInstUsesWith(I, UndefValue::get(Type::Int1Ty));
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@ -5333,7 +5317,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
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(isa<GlobalValue>(Op1) || isa<AllocaInst>(Op1) ||
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isa<ConstantPointerNull>(Op1)))
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return ReplaceInstUsesWith(I, ConstantInt::get(Type::Int1Ty,
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!isTrueWhenEqual(I)));
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!I.isTrueWhenEqual()));
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// icmp's with boolean values can always be turned into bitwise operations
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if (Ty == Type::Int1Ty) {
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@ -5614,7 +5598,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
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if (LHSI->hasOneUse() && isa<ConstantPointerNull>(RHSC)) {
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AddToWorkList(LHSI);
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return ReplaceInstUsesWith(I, ConstantInt::get(Type::Int1Ty,
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!isTrueWhenEqual(I)));
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!I.isTrueWhenEqual()));
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}
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break;
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}
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