forked from OSchip/llvm-project
[InstCombine] canonicalize min/max constant to select's false value
This is a first step towards canonicalization and improved folding/codegen for integer min/max as discussed here: http://lists.llvm.org/pipermail/llvm-dev/2016-November/106868.html Here, we're just matching the simplest min/max patterns and adjusting the icmp predicate while swapping the select operands. I've included FIXME tests in test/Transforms/InstCombine/select_meta.ll so it's easier to see how this might be extended (corresponds to the TODO comment in the code). That's also why I'm using matchSelectPattern() rather than a simpler check; once the backend is patched, we can just remove some of the restrictions to allow the obfuscated min/max patterns in the FIXME tests to be matched. Differential Revision: https://reviews.llvm.org/D26525 llvm-svn: 287585
This commit is contained in:
Sanjay Patel
parent
8efbe6acae
commit
3b0bafee63
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@ -500,9 +500,51 @@ static bool adjustMinMax(SelectInst &Sel, ICmpInst &Cmp) {
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return true;
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}
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/// If this is an integer min/max where the select's 'true' operand is a
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/// constant, canonicalize that constant to the 'false' operand:
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/// select (icmp Pred X, C), C, X --> select (icmp Pred' X, C), X, C
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static Instruction *
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canonicalizeMinMaxWithConstant(SelectInst &Sel, ICmpInst &Cmp,
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InstCombiner::BuilderTy &Builder) {
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// TODO: We should also canonicalize min/max when the select has a different
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// constant value than the cmp constant, but we need to fix the backend first.
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if (!Cmp.hasOneUse() || !isa<Constant>(Cmp.getOperand(1)) ||
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!isa<Constant>(Sel.getTrueValue()) ||
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isa<Constant>(Sel.getFalseValue()) ||
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Cmp.getOperand(1) != Sel.getTrueValue())
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return nullptr;
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// Canonicalize the compare predicate based on whether we have min or max.
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Value *LHS, *RHS;
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ICmpInst::Predicate NewPred;
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SelectPatternResult SPR = matchSelectPattern(&Sel, LHS, RHS);
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switch (SPR.Flavor) {
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case SPF_SMIN: NewPred = ICmpInst::ICMP_SLT; break;
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case SPF_UMIN: NewPred = ICmpInst::ICMP_ULT; break;
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case SPF_SMAX: NewPred = ICmpInst::ICMP_SGT; break;
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case SPF_UMAX: NewPred = ICmpInst::ICMP_UGT; break;
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default: return nullptr;
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}
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// Canonicalize the constant to the right side.
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if (isa<Constant>(LHS))
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std::swap(LHS, RHS);
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Value *NewCmp = Builder.CreateICmp(NewPred, LHS, RHS);
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SelectInst *NewSel = SelectInst::Create(NewCmp, LHS, RHS);
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NewSel->copyMetadata(Sel);
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// We swapped the select operands, so swap the metadata too.
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NewSel->swapProfMetadata();
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return NewSel;
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}
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/// Visit a SelectInst that has an ICmpInst as its first operand.
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Instruction *InstCombiner::foldSelectInstWithICmp(SelectInst &SI,
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ICmpInst *ICI) {
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if (Instruction *NewSel = canonicalizeMinMaxWithConstant(SI, *ICI, *Builder))
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return NewSel;
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bool Changed = adjustMinMax(SI, *ICI);
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ICmpInst::Predicate Pred = ICI->getPredicate();
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@ -29,7 +29,7 @@ define i32 @smin1(i32 %n) {
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ret i32 %m
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}
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; Canonicalize icmp predicate.
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; Canonicalize min/max.
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define i32 @smax2(i32 %n) {
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; CHECK-LABEL: @smax2(
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@ -42,7 +42,7 @@ define i32 @smax2(i32 %n) {
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ret i32 %m
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}
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; Canonicalize icmp predicate.
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; Canonicalize min/max.
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define i32 @smin2(i32 %n) {
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; CHECK-LABEL: @smin2(
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@ -55,12 +55,12 @@ define i32 @smin2(i32 %n) {
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ret i32 %m
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}
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; Swap signed pred and select ops.
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; Canonicalize min/max.
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define i32 @smax3(i32 %n) {
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; CHECK-LABEL: @smax3(
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; CHECK-NEXT: [[T:%.*]] = icmp slt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 0, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp sgt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 0
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp sgt i32 %n, -1
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@ -68,12 +68,12 @@ define i32 @smax3(i32 %n) {
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ret i32 %m
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}
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; Swap vector signed pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @smax3_vec(<2 x i32> %n) {
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; CHECK-LABEL: @smax3_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp slt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> zeroinitializer, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp sgt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> zeroinitializer
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp sgt <2 x i32> %n, <i32 -1, i32 -1>
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@ -81,12 +81,12 @@ define <2 x i32> @smax3_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Swap signed pred and select ops.
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; Canonicalize min/max.
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define i32 @smin3(i32 %n) {
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; CHECK-LABEL: @smin3(
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; CHECK-NEXT: [[T:%.*]] = icmp sgt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 0, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp slt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 0
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp slt i32 %n, 1
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@ -94,12 +94,12 @@ define i32 @smin3(i32 %n) {
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ret i32 %m
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}
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; Swap vector signed pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @smin3_vec(<2 x i32> %n) {
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; CHECK-LABEL: @smin3_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp sgt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> zeroinitializer, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp slt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> zeroinitializer
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp slt <2 x i32> %n, <i32 1, i32 1>
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@ -107,12 +107,12 @@ define <2 x i32> @smin3_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Swap unsigned pred and select ops.
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; Canonicalize min/max.
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define i32 @umax3(i32 %n) {
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; CHECK-LABEL: @umax3(
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; CHECK-NEXT: [[T:%.*]] = icmp ult i32 %n, 5
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 5, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp ugt i32 %n, 5
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 5
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp ugt i32 %n, 4
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@ -120,12 +120,12 @@ define i32 @umax3(i32 %n) {
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ret i32 %m
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}
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; Swap vector unsigned pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @umax3_vec(<2 x i32> %n) {
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; CHECK-LABEL: @umax3_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp ult <2 x i32> %n, <i32 5, i32 5>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> <i32 5, i32 5>, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp ugt <2 x i32> %n, <i32 5, i32 5>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> <i32 5, i32 5>
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp ugt <2 x i32> %n, <i32 4, i32 4>
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@ -133,12 +133,12 @@ define <2 x i32> @umax3_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Swap unsigned pred and select ops.
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; Canonicalize min/max.
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define i32 @umin3(i32 %n) {
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; CHECK-LABEL: @umin3(
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; CHECK-NEXT: [[T:%.*]] = icmp ugt i32 %n, 6
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 6, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp ult i32 %n, 6
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 6
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp ult i32 %n, 7
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@ -146,12 +146,12 @@ define i32 @umin3(i32 %n) {
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ret i32 %m
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}
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; Swap vector unsigned pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @umin3_vec(<2 x i32> %n) {
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; CHECK-LABEL: @umin3_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp ugt <2 x i32> %n, <i32 6, i32 6>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> <i32 6, i32 6>, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp ult <2 x i32> %n, <i32 6, i32 6>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> <i32 6, i32 6>
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp ult <2 x i32> %n, <i32 7, i32 7>
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@ -159,12 +159,12 @@ define <2 x i32> @umin3_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Canonicalize signed pred and swap pred and select ops.
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; Canonicalize min/max.
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define i32 @smax4(i32 %n) {
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; CHECK-LABEL: @smax4(
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; CHECK-NEXT: [[T:%.*]] = icmp slt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 0, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp sgt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 0
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp sge i32 %n, 0
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@ -172,12 +172,12 @@ define i32 @smax4(i32 %n) {
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ret i32 %m
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}
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; Canonicalize vector signed pred and swap pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @smax4_vec(<2 x i32> %n) {
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; CHECK-LABEL: @smax4_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp slt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> zeroinitializer, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp sgt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> zeroinitializer
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp sge <2 x i32> %n, zeroinitializer
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@ -185,12 +185,12 @@ define <2 x i32> @smax4_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Canonicalize signed pred and swap pred and select ops.
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; Canonicalize min/max.
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define i32 @smin4(i32 %n) {
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; CHECK-LABEL: @smin4(
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; CHECK-NEXT: [[T:%.*]] = icmp sgt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 0, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp slt i32 %n, 0
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 0
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp sle i32 %n, 0
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@ -198,12 +198,12 @@ define i32 @smin4(i32 %n) {
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ret i32 %m
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}
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; Canonicalize vector signed pred and swap pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @smin4_vec(<2 x i32> %n) {
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; CHECK-LABEL: @smin4_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp sgt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> zeroinitializer, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp slt <2 x i32> %n, zeroinitializer
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> zeroinitializer
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp sle <2 x i32> %n, zeroinitializer
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@ -211,12 +211,12 @@ define <2 x i32> @smin4_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Canonicalize unsigned pred and swap pred and select ops.
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; Canonicalize min/max.
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define i32 @umax4(i32 %n) {
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; CHECK-LABEL: @umax4(
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; CHECK-NEXT: [[T:%.*]] = icmp ult i32 %n, 8
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 8, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp ugt i32 %n, 8
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 8
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp uge i32 %n, 8
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@ -224,12 +224,12 @@ define i32 @umax4(i32 %n) {
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ret i32 %m
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}
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; Canonicalize vector unsigned pred and swap pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @umax4_vec(<2 x i32> %n) {
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; CHECK-LABEL: @umax4_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp ult <2 x i32> %n, <i32 8, i32 8>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> <i32 8, i32 8>, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp ugt <2 x i32> %n, <i32 8, i32 8>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> <i32 8, i32 8>
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp uge <2 x i32> %n, <i32 8, i32 8>
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@ -237,12 +237,12 @@ define <2 x i32> @umax4_vec(<2 x i32> %n) {
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ret <2 x i32> %m
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}
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; Canonicalize unsigned pred and swap pred and select ops.
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; Canonicalize min/max.
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define i32 @umin4(i32 %n) {
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; CHECK-LABEL: @umin4(
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; CHECK-NEXT: [[T:%.*]] = icmp ugt i32 %n, 9
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 9, i32 %n
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; CHECK-NEXT: [[T:%.*]] = icmp ult i32 %n, 9
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; CHECK-NEXT: [[M:%.*]] = select i1 [[T]], i32 %n, i32 9
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; CHECK-NEXT: ret i32 [[M]]
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;
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%t = icmp ule i32 %n, 9
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@ -250,12 +250,12 @@ define i32 @umin4(i32 %n) {
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ret i32 %m
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}
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; Canonicalize vector unsigned pred and swap pred and select ops.
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; Canonicalize min/max.
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define <2 x i32> @umin4_vec(<2 x i32> %n) {
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; CHECK-LABEL: @umin4_vec(
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; CHECK-NEXT: [[T:%.*]] = icmp ugt <2 x i32> %n, <i32 9, i32 9>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> <i32 9, i32 9>, <2 x i32> %n
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; CHECK-NEXT: [[T:%.*]] = icmp ult <2 x i32> %n, <i32 9, i32 9>
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; CHECK-NEXT: [[M:%.*]] = select <2 x i1> [[T]], <2 x i32> %n, <2 x i32> <i32 9, i32 9>
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; CHECK-NEXT: ret <2 x i32> [[M]]
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;
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%t = icmp ule <2 x i32> %n, <i32 9, i32 9>
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@ -266,8 +266,8 @@ define <2 x i32> @umin4_vec(<2 x i32> %n) {
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define i64 @smax_sext(i32 %a) {
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; CHECK-LABEL: @smax_sext(
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; CHECK-NEXT: [[A_EXT:%.*]] = sext i32 %a to i64
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[A_EXT]], 0
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 0, i64 [[A_EXT]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i64 [[A_EXT]], 0
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; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 0
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; CHECK-NEXT: ret i64 [[MAX]]
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;
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%a_ext = sext i32 %a to i64
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@ -279,8 +279,8 @@ define i64 @smax_sext(i32 %a) {
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define <2 x i64> @smax_sext_vec(<2 x i32> %a) {
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; CHECK-LABEL: @smax_sext_vec(
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; CHECK-NEXT: [[A_EXT:%.*]] = sext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i64> [[A_EXT]], zeroinitializer
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> zeroinitializer, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i64> [[A_EXT]], zeroinitializer
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> zeroinitializer
|
||||
; CHECK-NEXT: ret <2 x i64> [[MAX]]
|
||||
;
|
||||
%a_ext = sext <2 x i32> %a to <2 x i64>
|
||||
|
|
@ -292,8 +292,8 @@ define <2 x i64> @smax_sext_vec(<2 x i32> %a) {
|
|||
define i64 @smin_sext(i32 %a) {
|
||||
; CHECK-LABEL: @smin_sext(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext i32 %a to i64
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i64 [[A_EXT]], 0
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 0, i64 [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[A_EXT]], 0
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 0
|
||||
; CHECK-NEXT: ret i64 [[MIN]]
|
||||
;
|
||||
%a_ext = sext i32 %a to i64
|
||||
|
|
@ -305,8 +305,8 @@ define i64 @smin_sext(i32 %a) {
|
|||
define <2 x i64>@smin_sext_vec(<2 x i32> %a) {
|
||||
; CHECK-LABEL: @smin_sext_vec(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i64> [[A_EXT]], zeroinitializer
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> zeroinitializer, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i64> [[A_EXT]], zeroinitializer
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> zeroinitializer
|
||||
; CHECK-NEXT: ret <2 x i64> [[MIN]]
|
||||
;
|
||||
%a_ext = sext <2 x i32> %a to <2 x i64>
|
||||
|
|
@ -318,8 +318,8 @@ define <2 x i64>@smin_sext_vec(<2 x i32> %a) {
|
|||
define i64 @umax_sext(i32 %a) {
|
||||
; CHECK-LABEL: @umax_sext(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext i32 %a to i64
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[A_EXT]], 3
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 3, i64 [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A_EXT]], 3
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 3
|
||||
; CHECK-NEXT: ret i64 [[MAX]]
|
||||
;
|
||||
%a_ext = sext i32 %a to i64
|
||||
|
|
@ -331,8 +331,8 @@ define i64 @umax_sext(i32 %a) {
|
|||
define <2 x i64> @umax_sext_vec(<2 x i32> %a) {
|
||||
; CHECK-LABEL: @umax_sext_vec(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i64> [[A_EXT]], <i64 3, i64 3>
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> <i64 3, i64 3>, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i64> [[A_EXT]], <i64 3, i64 3>
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> <i64 3, i64 3>
|
||||
; CHECK-NEXT: ret <2 x i64> [[MAX]]
|
||||
;
|
||||
%a_ext = sext <2 x i32> %a to <2 x i64>
|
||||
|
|
@ -344,8 +344,8 @@ define <2 x i64> @umax_sext_vec(<2 x i32> %a) {
|
|||
define i64 @umin_sext(i32 %a) {
|
||||
; CHECK-LABEL: @umin_sext(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext i32 %a to i64
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A_EXT]], 2
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 2, i64 [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[A_EXT]], 2
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 2
|
||||
; CHECK-NEXT: ret i64 [[MIN]]
|
||||
;
|
||||
%a_ext = sext i32 %a to i64
|
||||
|
|
@ -357,8 +357,8 @@ define i64 @umin_sext(i32 %a) {
|
|||
define <2 x i64> @umin_sext_vec(<2 x i32> %a) {
|
||||
; CHECK-LABEL: @umin_sext_vec(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i64> [[A_EXT]], <i64 2, i64 2>
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> <i64 2, i64 2>, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i64> [[A_EXT]], <i64 2, i64 2>
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> <i64 2, i64 2>
|
||||
; CHECK-NEXT: ret <2 x i64> [[MIN]]
|
||||
;
|
||||
%a_ext = sext <2 x i32> %a to <2 x i64>
|
||||
|
|
@ -422,8 +422,8 @@ define <2 x i64> @umin_sext2_vec(<2 x i32> %a) {
|
|||
define i64 @umax_zext(i32 %a) {
|
||||
; CHECK-LABEL: @umax_zext(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = zext i32 %a to i64
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[A_EXT]], 3
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 3, i64 [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A_EXT]], 3
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 3
|
||||
; CHECK-NEXT: ret i64 [[MAX]]
|
||||
;
|
||||
%a_ext = zext i32 %a to i64
|
||||
|
|
@ -435,8 +435,8 @@ define i64 @umax_zext(i32 %a) {
|
|||
define <2 x i64> @umax_zext_vec(<2 x i32> %a) {
|
||||
; CHECK-LABEL: @umax_zext_vec(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = zext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i64> [[A_EXT]], <i64 3, i64 3>
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> <i64 3, i64 3>, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i64> [[A_EXT]], <i64 3, i64 3>
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> <i64 3, i64 3>
|
||||
; CHECK-NEXT: ret <2 x i64> [[MAX]]
|
||||
;
|
||||
%a_ext = zext <2 x i32> %a to <2 x i64>
|
||||
|
|
@ -448,8 +448,8 @@ define <2 x i64> @umax_zext_vec(<2 x i32> %a) {
|
|||
define i64 @umin_zext(i32 %a) {
|
||||
; CHECK-LABEL: @umin_zext(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = zext i32 %a to i64
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A_EXT]], 2
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 2, i64 [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[A_EXT]], 2
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP]], i64 [[A_EXT]], i64 2
|
||||
; CHECK-NEXT: ret i64 [[MIN]]
|
||||
;
|
||||
%a_ext = zext i32 %a to i64
|
||||
|
|
@ -461,8 +461,8 @@ define i64 @umin_zext(i32 %a) {
|
|||
define <2 x i64> @umin_zext_vec(<2 x i32> %a) {
|
||||
; CHECK-LABEL: @umin_zext_vec(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = zext <2 x i32> %a to <2 x i64>
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i64> [[A_EXT]], <i64 2, i64 2>
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> <i64 2, i64 2>, <2 x i64> [[A_EXT]]
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i64> [[A_EXT]], <i64 2, i64 2>
|
||||
; CHECK-NEXT: [[MIN:%.*]] = select <2 x i1> [[CMP]], <2 x i64> [[A_EXT]], <2 x i64> <i64 2, i64 2>
|
||||
; CHECK-NEXT: ret <2 x i64> [[MIN]]
|
||||
;
|
||||
%a_ext = zext <2 x i32> %a to <2 x i64>
|
||||
|
|
|
|||
|
|
@ -45,8 +45,8 @@ define i64 @t3(i64 %x, i32 %y) {
|
|||
|
||||
define i32 @t4(i32 %x, i32 %y) {
|
||||
; CHECK-LABEL: @t4(
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 %y, 5
|
||||
; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[TMP1]], i32 5, i32 %y
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 %y, 5
|
||||
; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[TMP1]], i32 %y, i32 5
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 %x, [[DOTV]]
|
||||
; CHECK-NEXT: ret i32 [[TMP2]]
|
||||
;
|
||||
|
|
|
|||
|
|
@ -200,8 +200,8 @@ define <4 x float> @bitcasts_icmp(<2 x i64> %a, <2 x i64> %b) {
|
|||
; SMIN(SMIN(X, 11), 92) -> SMIN(X, 11)
|
||||
define i32 @test68(i32 %x) {
|
||||
; CHECK-LABEL: @test68(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %x, 11
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 11, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 %x, 11
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 %x, i32 11
|
||||
; CHECK-NEXT: ret i32 [[COND]]
|
||||
;
|
||||
%cmp = icmp slt i32 11, %x
|
||||
|
|
@ -213,8 +213,8 @@ define i32 @test68(i32 %x) {
|
|||
|
||||
define <2 x i32> @test68vec(<2 x i32> %x) {
|
||||
; CHECK-LABEL: @test68vec(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i32> %x, <i32 11, i32 11>
|
||||
; CHECK-NEXT: [[COND:%.*]] = select <2 x i1> [[CMP]], <2 x i32> <i32 11, i32 11>, <2 x i32> %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> %x, <i32 11, i32 11>
|
||||
; CHECK-NEXT: [[COND:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> %x, <2 x i32> <i32 11, i32 11>
|
||||
; CHECK-NEXT: ret <2 x i32> [[COND]]
|
||||
;
|
||||
%cmp = icmp slt <2 x i32> <i32 11, i32 11>, %x
|
||||
|
|
@ -227,8 +227,8 @@ define <2 x i32> @test68vec(<2 x i32> %x) {
|
|||
; MIN(MIN(X, 24), 83) -> MIN(X, 24)
|
||||
define i32 @test69(i32 %x) {
|
||||
; CHECK-LABEL: @test69(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 %x, 24
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 24, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 %x, 24
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 %x, i32 24
|
||||
; CHECK-NEXT: ret i32 [[COND]]
|
||||
;
|
||||
%cmp = icmp ult i32 24, %x
|
||||
|
|
@ -241,8 +241,8 @@ define i32 @test69(i32 %x) {
|
|||
; SMAX(SMAX(X, 75), 36) -> SMAX(X, 75)
|
||||
define i32 @test70(i32 %x) {
|
||||
; CHECK-LABEL: @test70(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 75
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 75, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %x, 75
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 %x, i32 75
|
||||
; CHECK-NEXT: ret i32 [[COND]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 75
|
||||
|
|
@ -255,8 +255,8 @@ define i32 @test70(i32 %x) {
|
|||
; MAX(MAX(X, 68), 47) -> MAX(X, 68)
|
||||
define i32 @test71(i32 %x) {
|
||||
; CHECK-LABEL: @test71(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 %x, 68
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 68, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 %x, 68
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 %x, i32 68
|
||||
; CHECK-NEXT: ret i32 [[COND]]
|
||||
;
|
||||
%cmp = icmp ult i32 %x, 68
|
||||
|
|
@ -269,8 +269,8 @@ define i32 @test71(i32 %x) {
|
|||
; SMIN(SMIN(X, 92), 11) -> SMIN(X, 11)
|
||||
define i32 @test72(i32 %x) {
|
||||
; CHECK-LABEL: @test72(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp sgt i32 %x, 11
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 11, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 %x, 11
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 11
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp sgt i32 %x, 92
|
||||
|
|
@ -280,14 +280,14 @@ define i32 @test72(i32 %x) {
|
|||
ret i32 %retval
|
||||
}
|
||||
|
||||
; FIXME - vector neglect: FoldOrOfICmps()
|
||||
; FIXME - vector neglect: FoldAndOfICmps() / FoldOrOfICmps()
|
||||
|
||||
define <2 x i32> @test72vec(<2 x i32> %x) {
|
||||
; CHECK-LABEL: @test72vec(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i32> %x, <i32 92, i32 92>
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp sgt <2 x i32> %x, <i32 11, i32 11>
|
||||
; CHECK-NEXT: [[CMP3:%.*]] = or <2 x i1> [[CMP]], [[CMP31:%.*]]
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select <2 x i1> [[CMP3]], <2 x i32> <i32 11, i32 11>, <2 x i32> %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> %x, <i32 92, i32 92>
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = icmp slt <2 x i32> %x, <i32 11, i32 11>
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = and <2 x i1> [[TMP1]], [[TMP2]]
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select <2 x i1> [[TMP3]], <2 x i32> %x, <2 x i32> <i32 11, i32 11>
|
||||
; CHECK-NEXT: ret <2 x i32> [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp sgt <2 x i32> %x, <i32 92, i32 92>
|
||||
|
|
@ -300,8 +300,8 @@ define <2 x i32> @test72vec(<2 x i32> %x) {
|
|||
; MIN(MIN(X, 83), 24) -> MIN(X, 24)
|
||||
define i32 @test73(i32 %x) {
|
||||
; CHECK-LABEL: @test73(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp ugt i32 %x, 24
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 24, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 %x, 24
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 24
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp ugt i32 %x, 83
|
||||
|
|
@ -314,8 +314,8 @@ define i32 @test73(i32 %x) {
|
|||
; SMAX(SMAX(X, 36), 75) -> SMAX(X, 75)
|
||||
define i32 @test74(i32 %x) {
|
||||
; CHECK-LABEL: @test74(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp slt i32 %x, 75
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 75, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %x, 75
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 75
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 36
|
||||
|
|
@ -328,8 +328,8 @@ define i32 @test74(i32 %x) {
|
|||
; MAX(MAX(X, 47), 68) -> MAX(X, 68)
|
||||
define i32 @test75(i32 %x) {
|
||||
; CHECK-LABEL: @test75(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp ult i32 %x, 68
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 68, i32 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 %x, 68
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 68
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp ult i32 %x, 47
|
||||
|
|
|
|||
|
|
@ -3,8 +3,8 @@
|
|||
|
||||
define float @test1(i32 %scale) {
|
||||
; CHECK-LABEL: @test1(
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 %scale, 1
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 1, i32 %scale
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %scale, 1
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 %scale, i32 1
|
||||
; CHECK-NEXT: [[TMP3:%.*]] = sitofp i32 [[TMP2]] to float
|
||||
; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[TMP2]], 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP4]], float [[TMP3]], float 0.000000e+00
|
||||
|
|
|
|||
|
|
@ -1,4 +1,6 @@
|
|||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py and enhanced to include metadata checking.
|
||||
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||||
; and enhanced to include metadata checking.
|
||||
|
||||
; RUN: opt < %s -instcombine -S | FileCheck %s
|
||||
|
||||
define i32 @foo(i32) local_unnamed_addr #0 {
|
||||
|
|
@ -51,12 +53,11 @@ define i32 @foo2(i32, i32) local_unnamed_addr #0 {
|
|||
ret i32 %6
|
||||
}
|
||||
|
||||
; condition swapped
|
||||
define i64 @test43(i32 %a) nounwind {
|
||||
; CHECK-LABEL: @test43(
|
||||
; CHECK-NEXT: [[A_EXT:%.*]] = sext i32 %a to i64
|
||||
; CHECK-NEXT: [[IS_A_NONNEGATIVE:%.*]] = icmp slt i64 [[A_EXT]], 0
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[IS_A_NONNEGATIVE]], i64 0, i64 [[A_EXT]], !prof ![[MD3:[0-9]+]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i64 [[A_EXT]], 0
|
||||
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[TMP1]], i64 [[A_EXT]], i64 0, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i64 [[MAX]]
|
||||
;
|
||||
%a_ext = sext i32 %a to i64
|
||||
|
|
@ -136,10 +137,12 @@ define i32 @test30(i32 %x, i32 %y) {
|
|||
ret i32 %retval
|
||||
}
|
||||
|
||||
; Swap predicate / metadata order
|
||||
; SMAX(SMAX(X, 75), 36) -> SMAX(X, 75)
|
||||
define i32 @test70(i32 %x) {
|
||||
; CHECK-LABEL: @test70(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 75
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 75, i32 %x, !prof ![[MD1]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %x, 75
|
||||
; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 %x, i32 75, !prof ![[MD3:[0-9]+]]
|
||||
; CHECK-NEXT: ret i32 [[COND]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 75
|
||||
|
|
@ -149,12 +152,12 @@ define i32 @test70(i32 %x) {
|
|||
ret i32 %retval
|
||||
}
|
||||
|
||||
|
||||
; Swap predicate / metadata order
|
||||
; SMIN(SMIN(X, 92), 11) -> SMIN(X, 11)
|
||||
define i32 @test72(i32 %x) {
|
||||
; CHECK-LABEL: @test72(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp sgt i32 %x, 11
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 11, i32 %x, !prof ![[MD2:[0-9]+]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 %x, 11
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 11, !prof ![[MD4:[0-9]+]]
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp sgt i32 %x, 92
|
||||
|
|
@ -164,11 +167,12 @@ define i32 @test72(i32 %x) {
|
|||
ret i32 %retval
|
||||
}
|
||||
|
||||
; Swap predicate / metadata order
|
||||
; SMAX(SMAX(X, 36), 75) -> SMAX(X, 75)
|
||||
define i32 @test74(i32 %x) {
|
||||
; CHECK-LABEL: @test74(
|
||||
; CHECK-NEXT: [[CMP31:%.*]] = icmp slt i32 %x, 75
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[CMP31]], i32 75, i32 %x, !prof ![[MD2]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %x, 75
|
||||
; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 %x, i32 75, !prof ![[MD4]]
|
||||
; CHECK-NEXT: ret i32 [[RETVAL]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 36
|
||||
|
|
@ -178,10 +182,122 @@ define i32 @test74(i32 %x) {
|
|||
ret i32 %retval
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, but the metadata remains the same because the select operands are not swapped.
|
||||
define i32 @smin1(i32 %x) {
|
||||
; CHECK-LABEL: @smin1(
|
||||
; CHECK-NEXT: [[NOT_X:%.*]] = xor i32 %x, -1
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[NOT_X]], i32 -1, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%not_x = xor i32 %x, -1
|
||||
%cmp = icmp sgt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 %not_x, i32 -1, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, and the metadata is swapped because the select operands are swapped.
|
||||
define i32 @smin2(i32 %x) {
|
||||
; CHECK-LABEL: @smin2(
|
||||
; CHECK-NEXT: [[NOT_X:%.*]] = xor i32 %x, -1
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[NOT_X]], !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%not_x = xor i32 %x, -1
|
||||
%cmp = icmp slt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 -1, i32 %not_x, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, but the metadata remains the same because the select operands are not swapped.
|
||||
define i32 @smax1(i32 %x) {
|
||||
; CHECK-LABEL: @smax1(
|
||||
; CHECK-NEXT: [[NOT_X:%.*]] = xor i32 %x, -1
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[NOT_X]], i32 -1, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%not_x = xor i32 %x, -1
|
||||
%cmp = icmp slt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 %not_x, i32 -1, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, and the metadata is swapped because the select operands are swapped.
|
||||
define i32 @smax2(i32 %x) {
|
||||
; CHECK-LABEL: @smax2(
|
||||
; CHECK-NEXT: [[NOT_X:%.*]] = xor i32 %x, -1
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -1, i32 [[NOT_X]], !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%not_x = xor i32 %x, -1
|
||||
%cmp = icmp sgt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 -1, i32 %not_x, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, but the metadata remains the same because the select operands are not swapped.
|
||||
define i32 @umin1(i32 %x) {
|
||||
; CHECK-LABEL: @umin1(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %x, -1
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 %x, i32 -2147483648, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%cmp = icmp sgt i32 %x, -1
|
||||
%sel = select i1 %cmp, i32 %x, i32 -2147483648, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, and the metadata is swapped because the select operands are swapped.
|
||||
define i32 @umin2(i32 %x) {
|
||||
; CHECK-LABEL: @umin2(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 2147483647, i32 %x, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 2147483647, i32 %x, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, but the metadata remains the same because the select operands are not swapped.
|
||||
define i32 @umax1(i32 %x) {
|
||||
; CHECK-LABEL: @umax1(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 %x, i32 2147483647, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%cmp = icmp slt i32 %x, 0
|
||||
%sel = select i1 %cmp, i32 %x, i32 2147483647, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
; FIXME:
|
||||
; The compare should change, and the metadata is swapped because the select operands are swapped.
|
||||
define i32 @umax2(i32 %x) {
|
||||
; CHECK-LABEL: @umax2(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 %x, -1
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 -2147483648, i32 %x, !prof ![[MD1]]
|
||||
; CHECK-NEXT: ret i32 [[SEL]]
|
||||
;
|
||||
%cmp = icmp sgt i32 %x, -1
|
||||
%sel = select i1 %cmp, i32 -2147483648, i32 %x, !prof !1
|
||||
ret i32 %sel
|
||||
}
|
||||
|
||||
!1 = !{!"branch_weights", i32 2, i32 10}
|
||||
!2 = !{!"branch_weights", i32 3, i32 10}
|
||||
|
||||
; CHECK-DAG: ![[MD1]] = !{!"branch_weights", i32 2, i32 10}
|
||||
; CHECK-DAG: ![[MD2]] = !{!"branch_weights", i32 3, i32 10}
|
||||
; CHECK-DAG: ![[MD3]] = !{!"branch_weights", i32 10, i32 2}
|
||||
; CHECK-DAG: ![[MD4]] = !{!"branch_weights", i32 10, i32 3}
|
||||
|
||||
|
|
|
|||
|
|
@ -229,10 +229,10 @@ define i32 @test17(i1 %x) {
|
|||
|
||||
define i32 @test18(i16 %x) {
|
||||
; CHECK-LABEL: @test18(
|
||||
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i16 0, i16 %x
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = zext i16 [[SEL]] to i32
|
||||
; CHECK-NEXT: ret i32 [[TMP1]]
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i16 %x, 0
|
||||
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP1]], i16 %x, i16 0
|
||||
; CHECK-NEXT: [[TMP2:%.*]] = zext i16 [[SEL]] to i32
|
||||
; CHECK-NEXT: ret i32 [[TMP2]]
|
||||
;
|
||||
%cmp = icmp slt i16 %x, 0
|
||||
%sel = select i1 %cmp, i16 0, i16 %x
|
||||
|
|
|
|||
Loading…
Reference in New Issue