derek.holloway
7502bf64a4
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282 lines
8.8 KiB
LLVM
282 lines
8.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
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; RUN: opt -S -passes=dfa-jump-threading -verify-dom-info=1 %s | FileCheck %s
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declare void @do_something()
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declare void @user(i32)
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define void @equivalent_on_default(i1 %c1) {
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; CHECK-LABEL: define void @equivalent_on_default(
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; CHECK-SAME: i1 [[C1:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[SWITCH_BB:%.*]]
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; CHECK: switch_bb:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ poison, [[CASE2END:%.*]] ]
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; CHECK-NEXT: switch i32 [[PHI]], label [[DEFAULT_DEST:%.*]] [
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; CHECK-NEXT: i32 0, label [[CASE1:%.*]]
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; CHECK-NEXT: i32 1, label [[CASE2:%.*]]
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; CHECK-NEXT: ]
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; CHECK: switch_bb.jt2:
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; CHECK-NEXT: [[PHI_JT2:%.*]] = phi i32 [ [[PHI_CASE2_JT2:%.*]], [[CASE2END_JT2:%.*]] ]
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; CHECK-NEXT: br label [[DEFAULT_DEST]]
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; CHECK: switch_bb.jt1:
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; CHECK-NEXT: [[PHI_JT1:%.*]] = phi i32 [ 1, [[CASE1]] ]
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; CHECK-NEXT: br label [[CASE2]]
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; CHECK: case1:
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; CHECK-NEXT: br label [[SWITCH_BB_JT1:%.*]]
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; CHECK: case2:
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; CHECK-NEXT: br i1 [[C1]], label [[CASE2THEN:%.*]], label [[CASE2END_JT2]]
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; CHECK: case2then:
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; CHECK-NEXT: br label [[CASE2END_JT2]]
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; CHECK: case2end:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB]]
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; CHECK: case2end.jt2:
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; CHECK-NEXT: [[PHI_CASE2_JT2]] = phi i32 [ 2, [[CASE2]] ], [ 3, [[CASE2THEN]] ]
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT2:%.*]]
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; CHECK: default_dest:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %switch_bb
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switch_bb:
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%phi = phi i32 [ 0, %entry ], [ 1, %case1 ], [ %phi_case2, %case2end ]
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switch i32 %phi, label %default_dest [
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i32 0, label %case1
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i32 1, label %case2
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]
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case1:
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br label %switch_bb
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case2:
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br i1 %c1, label %case2then, label %case2end
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case2then:
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br label %case2end
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case2end:
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%phi_case2 = phi i32 [ 2, %case2 ] , [ 3, %case2then ]
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call void @do_something()
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br label %switch_bb
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default_dest:
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ret void
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}
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define void @equivalent_on_default_user(i1 %c1) {
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; CHECK-LABEL: define void @equivalent_on_default_user(
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; CHECK-SAME: i1 [[C1:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[SWITCH_BB:%.*]]
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; CHECK: switch_bb:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ poison, [[CASE2END:%.*]] ]
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; CHECK-NEXT: switch i32 [[PHI]], label [[DEFAULT_DEST:%.*]] [
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; CHECK-NEXT: i32 0, label [[CASE1:%.*]]
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; CHECK-NEXT: i32 1, label [[CASE2:%.*]]
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; CHECK-NEXT: ]
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; CHECK: switch_bb.jt2:
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; CHECK-NEXT: [[PHI_JT2:%.*]] = phi i32 [ [[PHI_CASE2_JT2:%.*]], [[CASE2END_JT2:%.*]] ]
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; CHECK-NEXT: br label [[DEFAULT_DEST]]
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; CHECK: switch_bb.jt1:
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; CHECK-NEXT: [[PHI_JT1:%.*]] = phi i32 [ 1, [[CASE1]] ]
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; CHECK-NEXT: br label [[CASE2]]
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; CHECK: case1:
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; CHECK-NEXT: br label [[SWITCH_BB_JT1:%.*]]
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; CHECK: case2:
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; CHECK-NEXT: br i1 [[C1]], label [[CASE2THEN:%.*]], label [[CASE2END_JT2]]
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; CHECK: case2then:
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; CHECK-NEXT: br label [[CASE2END_JT2]]
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; CHECK: case2end:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: call void @user(i32 poison)
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; CHECK-NEXT: br label [[SWITCH_BB]]
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; CHECK: case2end.jt2:
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; CHECK-NEXT: [[PHI_CASE2_JT2]] = phi i32 [ 2, [[CASE2]] ], [ 3, [[CASE2THEN]] ]
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: call void @user(i32 [[PHI_CASE2_JT2]])
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; CHECK-NEXT: br label [[SWITCH_BB_JT2:%.*]]
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; CHECK: default_dest:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %switch_bb
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switch_bb:
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%phi = phi i32 [ 0, %entry ], [ 1, %case1 ], [ %phi_case2, %case2end ]
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switch i32 %phi, label %default_dest [
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i32 0, label %case1
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i32 1, label %case2
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]
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case1:
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br label %switch_bb
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case2:
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br i1 %c1, label %case2then, label %case2end
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case2then:
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br label %case2end
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case2end:
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%phi_case2 = phi i32 [ 2, %case2 ] , [ 3, %case2then ]
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call void @do_something()
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call void @user(i32 %phi_case2)
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br label %switch_bb
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default_dest:
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ret void
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}
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define void @equivalent_only_cases(i1 %c1) {
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; CHECK-LABEL: define void @equivalent_only_cases(
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; CHECK-SAME: i1 [[C1:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[SWITCH_BB:%.*]]
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; CHECK: switch_bb:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ poison, [[CASE2END:%.*]] ]
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; CHECK-NEXT: switch i32 [[PHI]], label [[DEFAULT_DEST:%.*]] [
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; CHECK-NEXT: i32 0, label [[CASE1:%.*]]
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; CHECK-NEXT: i32 1, label [[CASE2:%.*]]
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; CHECK-NEXT: i32 2, label [[CASE1]]
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; CHECK-NEXT: i32 3, label [[CASE1]]
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; CHECK-NEXT: ]
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; CHECK: switch_bb.jt2:
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; CHECK-NEXT: [[PHI_JT2:%.*]] = phi i32 [ [[PHI_CASE2_JT2:%.*]], [[CASE2END_JT2:%.*]] ]
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; CHECK-NEXT: br label [[CASE1]]
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; CHECK: switch_bb.jt1:
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; CHECK-NEXT: [[PHI_JT1:%.*]] = phi i32 [ 1, [[CASE1]] ]
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; CHECK-NEXT: br label [[CASE2]]
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; CHECK: case1:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT1:%.*]]
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; CHECK: case2:
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; CHECK-NEXT: br i1 [[C1]], label [[CASE2THEN:%.*]], label [[CASE2END_JT2]]
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; CHECK: case2then:
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; CHECK-NEXT: br label [[CASE2END_JT2]]
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; CHECK: case2end:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB]]
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; CHECK: case2end.jt2:
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; CHECK-NEXT: [[PHI_CASE2_JT2]] = phi i32 [ 2, [[CASE2]] ], [ 3, [[CASE2THEN]] ]
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT2:%.*]]
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; CHECK: default_dest:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %switch_bb
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switch_bb:
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%phi = phi i32 [ 0, %entry ], [ 1, %case1 ], [ %phi_case2, %case2end ]
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switch i32 %phi, label %default_dest [
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i32 0, label %case1
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i32 1, label %case2
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i32 2, label %case1
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i32 3, label %case1
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]
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case1:
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call void @do_something()
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br label %switch_bb
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case2:
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br i1 %c1, label %case2then, label %case2end
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case2then:
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br label %case2end
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case2end:
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%phi_case2 = phi i32 [ 2, %case2 ] , [ 3, %case2then ]
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call void @do_something()
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br label %switch_bb
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default_dest:
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ret void
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}
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define void @equivalent_both_case_and_default(i1 %c1, i1 %c2) {
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; CHECK-LABEL: define void @equivalent_both_case_and_default(
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; CHECK-SAME: i1 [[C1:%.*]], i1 [[C2:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[SWITCH_BB:%.*]]
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; CHECK: switch_bb:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ poison, [[CASE2END:%.*]] ]
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; CHECK-NEXT: switch i32 [[PHI]], label [[DEFAULT_DEST:%.*]] [
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; CHECK-NEXT: i32 0, label [[CASE1:%.*]]
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; CHECK-NEXT: i32 1, label [[CASE2:%.*]]
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; CHECK-NEXT: i32 2, label [[CASE1]]
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; CHECK-NEXT: i32 3, label [[CASE1]]
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; CHECK-NEXT: ]
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; CHECK: switch_bb.jt4:
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; CHECK-NEXT: [[PHI_JT3:%.*]] = phi i32 [ [[PHI_CASE2_JT3:%.*]], [[CASE2END_JT3:%.*]] ]
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; CHECK-NEXT: br label [[DEFAULT_DEST]]
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; CHECK: switch_bb.jt2:
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; CHECK-NEXT: [[PHI_JT2:%.*]] = phi i32 [ [[PHI_CASE2_JT2:%.*]], [[CASE2END_JT2:%.*]] ]
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; CHECK-NEXT: br label [[CASE1]]
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; CHECK: switch_bb.jt1:
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; CHECK-NEXT: [[PHI_JT1:%.*]] = phi i32 [ 1, [[CASE1]] ]
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; CHECK-NEXT: br label [[CASE2]]
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; CHECK: case1:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT1:%.*]]
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; CHECK: case2:
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; CHECK-NEXT: br i1 [[C1]], label [[CASE2THEN:%.*]], label [[CASE2END_JT2]]
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; CHECK: case2then:
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; CHECK-NEXT: br i1 [[C2]], label [[CASE2THEN2:%.*]], label [[CASE2END_JT2]]
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; CHECK: case2then2:
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; CHECK-NEXT: br i1 [[C2]], label [[CASE2THEN3:%.*]], label [[CASE2END_JT3]]
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; CHECK: case2then3:
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; CHECK-NEXT: br label [[CASE2END_JT3]]
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; CHECK: case2end:
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB]]
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; CHECK: case2end.jt4:
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; CHECK-NEXT: [[PHI_CASE2_JT3]] = phi i32 [ 5, [[CASE2THEN3]] ], [ 4, [[CASE2THEN2]] ]
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT3:%.*]]
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; CHECK: case2end.jt2:
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; CHECK-NEXT: [[PHI_CASE2_JT2]] = phi i32 [ 2, [[CASE2]] ], [ 3, [[CASE2THEN]] ]
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; CHECK-NEXT: call void @do_something()
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; CHECK-NEXT: br label [[SWITCH_BB_JT2:%.*]]
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; CHECK: default_dest:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %switch_bb
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switch_bb:
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%phi = phi i32 [ 0, %entry ], [ 1, %case1 ], [ %phi_case2, %case2end ]
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switch i32 %phi, label %default_dest [
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i32 0, label %case1
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i32 1, label %case2
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i32 2, label %case1
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i32 3, label %case1
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]
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case1:
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call void @do_something()
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br label %switch_bb
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case2:
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br i1 %c1, label %case2then, label %case2end
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case2then:
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br i1 %c2, label %case2then2, label %case2end
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case2then2:
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br i1 %c2, label %case2then3, label %case2end
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case2then3:
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br label %case2end
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case2end:
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%phi_case2 = phi i32 [ 2, %case2 ], [ 3, %case2then ], [ 4, %case2then2 ], [ 5, %case2then3 ]
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call void @do_something()
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br label %switch_bb
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default_dest:
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ret void
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}
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