112 lines
3.3 KiB
LLVM
112 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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define i1 @test-same-operands-sub-add-nsw-icmp-sgt(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-same-operands-sub-add-nsw-icmp-sgt(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[B]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nsw i8 %a, %b
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%cmp = icmp sgt i8 %sub, %add
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ret i1 %cmp
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}
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define i1 @test-same-operands-sub-add-nsw-icmp-slt(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-same-operands-sub-add-nsw-icmp-slt(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nsw i8 %a, %b
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%cmp = icmp slt i8 %sub, %add
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ret i1 %cmp
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}
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define i1 @test-same-operands-sub-add-nsw-icmp-sle(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-same-operands-sub-add-nsw-icmp-sle(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], -1
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nsw i8 %a, %b
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%cmp = icmp sle i8 %sub, %add
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ret i1 %cmp
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}
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define i1 @test-same-operands-sub-add-nsw-nuw-icmp-eq(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-same-operands-sub-add-nsw-nuw-icmp-eq(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[B]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nuw i8 %a, %b
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%cmp = icmp eq i8 %sub, %add
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ret i1 %cmp
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}
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define i1 @test-same-operands-sub-add-nsw-icmp-eq(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-same-operands-sub-add-nsw-icmp-eq(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[B]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nsw i8 %a, %b
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%cmp = icmp eq i8 %sub, %add
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ret i1 %cmp
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}
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define i1 @test-add-sub-nsw-icmp-sgt(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-add-sub-nsw-icmp-sgt(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nsw i8 %a, %b
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%add = add nsw i8 %a, %b
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%cmp = icmp sgt i8 %add, %sub
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ret i1 %cmp
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}
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define i1 @test-add-sub-nuw-icmp-uge(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-add-sub-nuw-icmp-uge(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: ret i1 true
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;
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%sub = sub nuw i8 %a, %b
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%add = add nuw i8 %a, %b
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%cmp = icmp uge i8 %add, %sub
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ret i1 %cmp
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}
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; Check not folded
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define i1 @test-add-sub-nuw-icmp-sge(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-add-sub-nuw-icmp-sge(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: [[SUB:%.*]] = sub nuw i8 [[A]], [[B]]
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; CHECK-NEXT: [[ADD:%.*]] = add nuw i8 [[A]], [[B]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp sge i8 [[ADD]], [[SUB]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub = sub nuw i8 %a, %b
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%add = add nuw i8 %a, %b
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%cmp = icmp sge i8 %add, %sub
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ret i1 %cmp
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}
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define i1 @test-add-swap-sub-nuw-icmp-uge(i8 %a, i8 %b) {
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; CHECK-LABEL: define i1 @test-add-swap-sub-nuw-icmp-uge(
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; CHECK-SAME: i8 [[A:%.*]], i8 [[B:%.*]]) {
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; CHECK-NEXT: ret i1 true
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;
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%sub = sub nuw i8 %a, %b
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%add = add nuw i8 %b, %a
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%cmp = icmp uge i8 %add, %sub
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ret i1 %cmp
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}
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