434 lines
12 KiB
LLVM
434 lines
12 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -fix-irreducible -S | FileCheck %s -check-prefix=CHECK
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define void @nested_irr_top_level(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5) {
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; CHECK-LABEL: @nested_irr_top_level(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: A1:
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; CHECK-NEXT: br label [[IRR_GUARD1:%.*]]
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; CHECK: B1:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD1]], label [[A3:%.*]]
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; CHECK: B2:
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; CHECK-NEXT: br i1 [[PRED3:%.*]], label [[IRR_GUARD1]], label [[A3]]
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; CHECK: A3:
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; CHECK-NEXT: br i1 [[PRED4:%.*]], label [[IRR_GUARD]], label [[EXIT:%.*]]
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; CHECK: A2:
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; CHECK-NEXT: br i1 [[PRED5:%.*]], label [[IRR_GUARD]], label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_A1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ [[PRED0:%.*]], [[ENTRY:%.*]] ], [ false, [[A3]] ]
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; CHECK-NEXT: br i1 [[GUARD_A1]], label [[A1:%.*]], label [[A2]]
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; CHECK: irr.guard1:
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; CHECK-NEXT: [[GUARD_B1:%.*]] = phi i1 [ true, [[B2:%.*]] ], [ [[PRED1:%.*]], [[A1]] ], [ false, [[B1:%.*]] ]
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; CHECK-NEXT: br i1 [[GUARD_B1]], label [[B1]], label [[B2]]
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;
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entry:
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br i1 %Pred0, label %A1, label %A2
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A1:
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br i1 %Pred1, label %B1, label %B2
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B1:
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br i1 %Pred2, label %B2, label %A3
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B2:
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br i1 %Pred3, label %B1, label %A3
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A3:
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br i1 %Pred4, label %A2, label %exit
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A2:
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br i1 %Pred5, label %A1, label %exit
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exit:
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ret void
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}
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define void @nested_irr_in_loop(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5, i1 %Pred6) {
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; CHECK-LABEL: @nested_irr_in_loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[H1:%.*]]
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; CHECK: H1:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: A1:
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; CHECK-NEXT: br label [[IRR_GUARD1:%.*]]
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; CHECK: B1:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD1]], label [[A3:%.*]]
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; CHECK: B2:
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; CHECK-NEXT: br i1 [[PRED3:%.*]], label [[IRR_GUARD1]], label [[A3]]
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; CHECK: A3:
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; CHECK-NEXT: br i1 [[PRED4:%.*]], label [[IRR_GUARD]], label [[L1:%.*]]
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; CHECK: A2:
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; CHECK-NEXT: br i1 [[PRED5:%.*]], label [[IRR_GUARD]], label [[L1]]
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; CHECK: L1:
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; CHECK-NEXT: br i1 [[PRED6:%.*]], label [[EXIT:%.*]], label [[H1]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_A1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ [[PRED0:%.*]], [[H1]] ], [ false, [[A3]] ]
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; CHECK-NEXT: br i1 [[GUARD_A1]], label [[A1:%.*]], label [[A2]]
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; CHECK: irr.guard1:
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; CHECK-NEXT: [[GUARD_B1:%.*]] = phi i1 [ true, [[B2:%.*]] ], [ [[PRED1:%.*]], [[A1]] ], [ false, [[B1:%.*]] ]
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; CHECK-NEXT: br i1 [[GUARD_B1]], label [[B1]], label [[B2]]
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;
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entry:
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br label %H1
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H1:
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br i1 %Pred0, label %A1, label %A2
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A1:
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br i1 %Pred1, label %B1, label %B2
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B1:
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br i1 %Pred2, label %B2, label %A3
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B2:
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br i1 %Pred3, label %B1, label %A3
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A3:
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br i1 %Pred4, label %A2, label %L1
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A2:
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br i1 %Pred5, label %A1, label %L1
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L1:
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br i1 %Pred6, label %exit, label %H1
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exit:
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ret void
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}
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define void @loop_in_irr(i1 %Pred0, i1 %Pred1, i1 %Pred2) {
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; CHECK-LABEL: @loop_in_irr(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: A1:
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; CHECK-NEXT: br label [[H1:%.*]]
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; CHECK: H1:
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; CHECK-NEXT: br label [[L1:%.*]]
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; CHECK: L1:
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; CHECK-NEXT: br i1 [[PRED1:%.*]], label [[H1]], label [[A3:%.*]]
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; CHECK: A3:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD]], label [[EXIT:%.*]]
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; CHECK: A2:
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; CHECK-NEXT: br label [[IRR_GUARD]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_A1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ [[PRED0:%.*]], [[ENTRY:%.*]] ], [ false, [[A3]] ]
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; CHECK-NEXT: br i1 [[GUARD_A1]], label [[A1:%.*]], label [[A2]]
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;
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entry:
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br i1 %Pred0, label %A1, label %A2
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A1:
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br label %H1
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H1:
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br label %L1
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L1:
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br i1 %Pred1, label %H1, label %A3
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A3:
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br i1 %Pred2, label %A2, label %exit
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A2:
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br label %A1
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exit:
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ret void
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}
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define void @loop_in_irr_shared_header(i1 %Pred0, i1 %Pred1, i1 %Pred2) {
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; CHECK-LABEL: @loop_in_irr_shared_header(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: H1:
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; CHECK-NEXT: br label [[L1:%.*]]
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; CHECK: L1:
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; CHECK-NEXT: br i1 [[PRED1:%.*]], label [[IRR_GUARD]], label [[A3:%.*]]
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; CHECK: A3:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD]], label [[EXIT:%.*]]
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; CHECK: A2:
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; CHECK-NEXT: br label [[IRR_GUARD]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_H1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ true, [[L1]] ], [ [[PRED0:%.*]], [[ENTRY:%.*]] ], [ false, [[A3]] ]
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; CHECK-NEXT: br i1 [[GUARD_H1]], label [[H1:%.*]], label [[A2]]
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;
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entry:
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br i1 %Pred0, label %H1, label %A2
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H1:
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br label %L1
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L1:
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br i1 %Pred1, label %H1, label %A3
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A3:
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br i1 %Pred2, label %A2, label %exit
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A2:
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br label %H1
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exit:
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ret void
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}
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define void @siblings_top_level(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5, i1 %Pred6) {
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; CHECK-LABEL: @siblings_top_level(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[PRED0:%.*]], label [[H1:%.*]], label [[FORK1:%.*]]
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; CHECK: H1:
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; CHECK-NEXT: br label [[IRR_GUARD1:%.*]]
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; CHECK: A1:
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; CHECK-NEXT: br label [[IRR_GUARD1]]
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; CHECK: A2:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD1]], label [[L1:%.*]]
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; CHECK: L1:
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; CHECK-NEXT: br i1 [[PRED3:%.*]], label [[H1]], label [[EXIT:%.*]]
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; CHECK: fork1:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: B1:
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; CHECK-NEXT: br label [[H2:%.*]]
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; CHECK: H2:
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; CHECK-NEXT: br label [[L2:%.*]]
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; CHECK: L2:
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; CHECK-NEXT: br i1 [[PRED5:%.*]], label [[H2]], label [[IRR_GUARD]]
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; CHECK: B2:
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; CHECK-NEXT: br i1 [[PRED6:%.*]], label [[IRR_GUARD]], label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_B1:%.*]] = phi i1 [ true, [[B2:%.*]] ], [ [[PRED4:%.*]], [[FORK1]] ], [ false, [[L2]] ]
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; CHECK-NEXT: br i1 [[GUARD_B1]], label [[B1:%.*]], label [[B2]]
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; CHECK: irr.guard1:
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; CHECK-NEXT: [[GUARD_A1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ [[PRED1:%.*]], [[H1]] ], [ false, [[A1:%.*]] ]
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; CHECK-NEXT: br i1 [[GUARD_A1]], label [[A1]], label [[A2]]
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;
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entry:
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br i1 %Pred0, label %H1, label %fork1
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H1:
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br i1 %Pred1, label %A1, label %A2
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A1:
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br label %A2
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A2:
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br i1 %Pred2, label %A1, label %L1
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L1:
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br i1 %Pred3, label %H1, label %exit
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fork1:
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br i1 %Pred4, label %B1, label %B2
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B1:
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br label %H2
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H2:
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br label %L2
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L2:
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br i1 %Pred5, label %H2, label %B2
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B2:
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br i1 %Pred6, label %B1, label %exit
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exit:
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ret void
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}
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define void @siblings_in_loop(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5, i1 %Pred6, i1 %Pred7) {
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; CHECK-LABEL: @siblings_in_loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[H0:%.*]]
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; CHECK: H0:
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; CHECK-NEXT: br i1 [[PRED0:%.*]], label [[H1:%.*]], label [[FORK1:%.*]]
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; CHECK: H1:
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; CHECK-NEXT: br label [[IRR_GUARD1:%.*]]
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; CHECK: A1:
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; CHECK-NEXT: br label [[IRR_GUARD1]]
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; CHECK: A2:
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; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[IRR_GUARD1]], label [[L1:%.*]]
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; CHECK: L1:
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; CHECK-NEXT: br i1 [[PRED3:%.*]], label [[H1]], label [[L0:%.*]]
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; CHECK: fork1:
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; CHECK-NEXT: br label [[IRR_GUARD:%.*]]
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; CHECK: B1:
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; CHECK-NEXT: br label [[H2:%.*]]
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; CHECK: H2:
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; CHECK-NEXT: br label [[L2:%.*]]
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; CHECK: L2:
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; CHECK-NEXT: br i1 [[PRED5:%.*]], label [[H2]], label [[IRR_GUARD]]
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; CHECK: B2:
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; CHECK-NEXT: br i1 [[PRED6:%.*]], label [[IRR_GUARD]], label [[L0]]
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; CHECK: L0:
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; CHECK-NEXT: br i1 [[PRED7:%.*]], label [[EXIT:%.*]], label [[H0]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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; CHECK: irr.guard:
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; CHECK-NEXT: [[GUARD_B1:%.*]] = phi i1 [ true, [[B2:%.*]] ], [ [[PRED4:%.*]], [[FORK1]] ], [ false, [[L2]] ]
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; CHECK-NEXT: br i1 [[GUARD_B1]], label [[B1:%.*]], label [[B2]]
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; CHECK: irr.guard1:
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; CHECK-NEXT: [[GUARD_A1:%.*]] = phi i1 [ true, [[A2:%.*]] ], [ [[PRED1:%.*]], [[H1]] ], [ false, [[A1:%.*]] ]
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; CHECK-NEXT: br i1 [[GUARD_A1]], label [[A1]], label [[A2]]
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;
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entry:
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br label %H0
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H0:
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br i1 %Pred0, label %H1, label %fork1
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H1:
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br i1 %Pred1, label %A1, label %A2
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A1:
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br label %A2
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A2:
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br i1 %Pred2, label %A1, label %L1
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L1:
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br i1 %Pred3, label %H1, label %L0
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fork1:
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br i1 %Pred4, label %B1, label %B2
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B1:
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br label %H2
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H2:
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br label %L2
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L2:
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br i1 %Pred5, label %H2, label %B2
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B2:
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br i1 %Pred6, label %B1, label %L0
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L0:
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br i1 %Pred7, label %exit, label %H0
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exit:
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ret void
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}
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define void @irreducible_mountain_bug(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5, i1 %Pred6, i1 %Pred7, i1 %Pred8, i1 %Pred9, i1 %Pred10, i1 %Pred11, i1 %Pred12, i1 %Pred13) {
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; CHECK-LABEL: @irreducible_mountain_bug(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[PRED0:%.*]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.end:
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; CHECK-NEXT: br i1 [[PRED1:%.*]], label [[IF_THEN7:%.*]], label [[IF_ELSE:%.*]]
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; CHECK: if.then7:
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; CHECK-NEXT: br label [[IF_END16:%.*]]
|
||
|
|
; CHECK: if.else:
|
||
|
|
; CHECK-NEXT: br label [[IF_END16]]
|
||
|
|
; CHECK: if.end16:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED2:%.*]], label [[WHILE_COND_PREHEADER:%.*]], label [[IF_THEN39:%.*]]
|
||
|
|
; CHECK: while.cond.preheader:
|
||
|
|
; CHECK-NEXT: br label [[WHILE_COND:%.*]]
|
||
|
|
; CHECK: while.cond:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED3:%.*]], label [[IRR_GUARD:%.*]], label [[LOR_RHS:%.*]]
|
||
|
|
; CHECK: cond.true49:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED4:%.*]], label [[IF_THEN69:%.*]], label [[WHILE_BODY63:%.*]]
|
||
|
|
; CHECK: while.body63:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED5:%.*]], label [[EXIT:%.*]], label [[WHILE_COND47:%.*]]
|
||
|
|
; CHECK: while.cond47:
|
||
|
|
; CHECK-NEXT: br label [[IRR_GUARD]]
|
||
|
|
; CHECK: cond.end61:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED7:%.*]], label [[WHILE_BODY63]], label [[WHILE_COND]]
|
||
|
|
; CHECK: if.then69:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED8:%.*]], label [[EXIT]], label [[WHILE_COND]]
|
||
|
|
; CHECK: lor.rhs:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED9:%.*]], label [[IRR_GUARD]], label [[WHILE_END76:%.*]]
|
||
|
|
; CHECK: while.end76:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: if.then39:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED10:%.*]], label [[EXIT]], label [[IF_END_I145:%.*]]
|
||
|
|
; CHECK: if.end.i145:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED11:%.*]], label [[EXIT]], label [[IF_END8_I149:%.*]]
|
||
|
|
; CHECK: if.end8.i149:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: if.then:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED12:%.*]], label [[EXIT]], label [[IF_END_I:%.*]]
|
||
|
|
; CHECK: if.end.i:
|
||
|
|
; CHECK-NEXT: br i1 [[PRED13:%.*]], label [[EXIT]], label [[IF_END8_I:%.*]]
|
||
|
|
; CHECK: if.end8.i:
|
||
|
|
; CHECK-NEXT: br label [[EXIT]]
|
||
|
|
; CHECK: exit:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: irr.guard:
|
||
|
|
; CHECK-NEXT: [[GUARD_COND_TRUE49:%.*]] = phi i1 [ [[PRED6:%.*]], [[WHILE_COND47]] ], [ true, [[WHILE_COND]] ], [ false, [[LOR_RHS]] ]
|
||
|
|
; CHECK-NEXT: br i1 [[GUARD_COND_TRUE49]], label [[COND_TRUE49:%.*]], label [[COND_END61:%.*]]
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
br i1 %Pred0, label %if.end, label %if.then
|
||
|
|
|
||
|
|
if.end:
|
||
|
|
br i1 %Pred1, label %if.then7, label %if.else
|
||
|
|
|
||
|
|
if.then7:
|
||
|
|
br label %if.end16
|
||
|
|
|
||
|
|
if.else:
|
||
|
|
br label %if.end16
|
||
|
|
|
||
|
|
if.end16:
|
||
|
|
br i1 %Pred2, label %while.cond.preheader, label %if.then39
|
||
|
|
|
||
|
|
while.cond.preheader:
|
||
|
|
br label %while.cond
|
||
|
|
|
||
|
|
while.cond:
|
||
|
|
br i1 %Pred3, label %cond.true49, label %lor.rhs
|
||
|
|
|
||
|
|
cond.true49:
|
||
|
|
br i1 %Pred4, label %if.then69, label %while.body63
|
||
|
|
|
||
|
|
while.body63:
|
||
|
|
br i1 %Pred5, label %exit, label %while.cond47
|
||
|
|
|
||
|
|
while.cond47:
|
||
|
|
br i1 %Pred6, label %cond.true49, label %cond.end61
|
||
|
|
|
||
|
|
cond.end61:
|
||
|
|
br i1 %Pred7, label %while.body63, label %while.cond
|
||
|
|
|
||
|
|
if.then69:
|
||
|
|
br i1 %Pred8, label %exit, label %while.cond
|
||
|
|
|
||
|
|
lor.rhs:
|
||
|
|
br i1 %Pred9, label %cond.end61, label %while.end76
|
||
|
|
|
||
|
|
while.end76:
|
||
|
|
br label %exit
|
||
|
|
|
||
|
|
if.then39:
|
||
|
|
br i1 %Pred10, label %exit, label %if.end.i145
|
||
|
|
|
||
|
|
if.end.i145:
|
||
|
|
br i1 %Pred11, label %exit, label %if.end8.i149
|
||
|
|
|
||
|
|
if.end8.i149:
|
||
|
|
br label %exit
|
||
|
|
|
||
|
|
if.then:
|
||
|
|
br i1 %Pred12, label %exit, label %if.end.i
|
||
|
|
|
||
|
|
if.end.i:
|
||
|
|
br i1 %Pred13, label %exit, label %if.end8.i
|
||
|
|
|
||
|
|
if.end8.i:
|
||
|
|
br label %exit
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|