[NFC] Added testcase for PR39116
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llvm/test/Transforms/PhaseOrdering/pr39116.ll
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36
llvm/test/Transforms/PhaseOrdering/pr39116.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -instcombine -S < %s | FileCheck %s
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define zeroext i1 @switch_ob_one_two_cases(i32 %arg) {
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; CHECK-LABEL: @switch_ob_one_two_cases(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[ARG:%.*]], -3
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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bb:
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switch i32 %arg, label %bb1 [
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i32 0, label %bb2
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i32 2, label %bb2
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]
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bb1:
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br label %bb2
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bb2:
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%i = phi i1 [ false, %bb1 ], [ true, %bb ], [ true, %bb ]
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ret i1 %i
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}
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define zeroext i1 @switch_ob_one_two_cases2(i32 %arg) {
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; CHECK-LABEL: @switch_ob_one_two_cases2(
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; CHECK-NEXT: [[I:%.*]] = icmp eq i32 [[ARG:%.*]], 7
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; CHECK-NEXT: [[I1:%.*]] = icmp eq i32 [[ARG]], 11
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; CHECK-NEXT: [[I2:%.*]] = or i1 [[I]], [[I1]]
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; CHECK-NEXT: ret i1 [[I2]]
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;
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%i = icmp eq i32 %arg, 7
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%i1 = icmp eq i32 %arg, 11
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%i2 = or i1 %i, %i1
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ret i1 %i2
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}
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