1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -loop-deletion -verify-dom-info -S | FileCheck %s
4 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
6 ; loop1 contains an irreducible cycle, which may loop infinitely. Do not remove
8 define void @irreducible_subloop_no_mustprogress(i1 %c1, i1 %c2, i1 %c3) {
9 ; CHECK-LABEL: @irreducible_subloop_no_mustprogress(
11 ; CHECK-NEXT: br label [[LOOP1:%.*]]
13 ; CHECK-NEXT: br i1 [[C1:%.*]], label [[LOOP1_BB1:%.*]], label [[IRR_BB1:%.*]]
15 ; CHECK-NEXT: br label [[IRR_BB2:%.*]]
17 ; CHECK-NEXT: br i1 [[C2:%.*]], label [[LOOP1_LATCH:%.*]], label [[IRR_BB2]]
19 ; CHECK-NEXT: br i1 [[C3:%.*]], label [[LOOP1_LATCH]], label [[IRR_BB1]]
21 ; CHECK-NEXT: br i1 false, label [[LOOP1_LATCH_LOOP1_CRIT_EDGE:%.*]], label [[EXIT:%.*]]
22 ; CHECK: loop1.latch.loop1_crit_edge:
23 ; CHECK-NEXT: unreachable
25 ; CHECK-NEXT: ret void
31 br i1 %c1, label %loop1.bb1, label %irr.bb1
37 br i1 %c2, label %loop1.latch, label %irr.bb2
40 br i1 %c3, label %loop1.latch, label %irr.bb1
43 br i1 false, label %loop1, label %exit
49 define void @irreducible_subloop_with_mustprogress(i1 %c1, i1 %c2, i1 %c3) mustprogress {
50 ; CHECK-LABEL: @irreducible_subloop_with_mustprogress(
51 ; CHECK-NEXT: br label [[EXIT:%.*]]
53 ; CHECK-NEXT: ret void
58 br i1 %c1, label %loop1.bb1, label %irr.bb1
64 br i1 %c2, label %loop1.latch, label %irr.bb2
67 br i1 %c3, label %loop1.latch, label %irr.bb1
70 br i1 false, label %loop1, label %exit