xref: /llvm-project/llvm/test/Transforms/InstCombine/pr71330.ll (revision 9ef829097bbc4cf908698e3891af11a154e1d3e2)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
2; RUN: opt -passes=instcombine -S < %s | FileCheck %s
3
4define void @pr71330(i32 %conv, i1 %tobool19.not4, i16 %lb) {
5; CHECK-LABEL: define void @pr71330(
6; CHECK-SAME: i32 [[CONV:%.*]], i1 [[TOBOOL19_NOT4:%.*]], i16 [[LB:%.*]]) {
7; CHECK-NEXT:  entry:
8; CHECK-NEXT:    br label [[FOR_COND7_PREHEADER:%.*]]
9; CHECK:       for.cond7.preheader:
10; CHECK-NEXT:    br i1 [[TOBOOL19_NOT4]], label [[FOR_COND7_PREHEADER_SPLIT_US:%.*]], label [[FOR_COND7:%.*]]
11; CHECK:       for.cond7.preheader.split.us:
12; CHECK-NEXT:    br i1 true, label [[FOR_COND7_PREHEADER_SPLIT_US_SPLIT:%.*]], label [[FOR_COND7_US_US:%.*]]
13; CHECK:       for.cond7.us.us:
14; CHECK-NEXT:    br i1 poison, label [[FOR_COND7_US_US]], label [[FOR_END25:%.*]]
15; CHECK:       for.cond7.preheader.split.us.split:
16; CHECK-NEXT:    ret void
17; CHECK:       for.cond7:
18; CHECK-NEXT:    [[CMP12:%.*]] = icmp slt i32 [[CONV]], 0
19; CHECK-NEXT:    br i1 [[CMP12]], label [[FOR_BODY14:%.*]], label [[FOR_END25]]
20; CHECK:       for.body14:
21; CHECK-NEXT:    ret void
22; CHECK:       for.end25:
23; CHECK-NEXT:    br i1 false, label [[FOR_COND7_PREHEADER]], label [[FOR_END36:%.*]]
24; CHECK:       for.end36:
25; CHECK-NEXT:    ret void
26;
27entry:
28  br label %for.cond7.preheader
29
30for.cond7.preheader:  ; preds = %for.end25, %entry
31  %storemerge33 = phi i32 [ -3, %entry ], [ 0, %for.end25 ]
32  %sm8 = and i32 %storemerge33, 1
33  %add = add i32 %storemerge33, 8
34  %cmp.i.i.not = icmp eq i32 %sm8, 0
35  %cmp3.i.i = icmp eq i32 %add, 0
36  %and7.i.i = and i32 %storemerge33, 1
37  %cmp8.i.i = icmp eq i32 %and7.i.i, 0
38  %tobool.not.i.i = icmp eq i32 %add, 0
39  %..i.i = select i1 %tobool.not.i.i, i32 1, i32 3
40  br i1 %tobool19.not4, label %for.cond7.preheader.split.us, label %for.cond7
41
42for.cond7.preheader.split.us:  ; preds = %for.cond7.preheader
43  br i1 %cmp.i.i.not, label %for.cond7.us.us, label %for.cond7.preheader.split.us.split
44
45for.cond7.us.us:  ; preds = %for.cond7.us.us, %for.cond7.preheader.split.us
46  %spec.select = select i1 %cmp8.i.i, i32 1, i32 %..i.i
47  %retval.0.i.i.us.us = select i1 %cmp3.i.i, i32 0, i32 %spec.select
48  %add9.us.us = add i32 %retval.0.i.i.us.us, %conv
49  %conv10.us.us = sext i32 %add9.us.us to i64
50  %cmp12.us.us = icmp slt i64 %conv10.us.us, 0
51  br i1 %cmp12.us.us, label %for.cond7.us.us, label %for.end25
52
53for.cond7.preheader.split.us.split:  ; preds = %for.cond7.preheader.split.us
54  ret void
55
56for.cond7:  ; preds = %for.cond7.preheader
57  %cmp.i.i.not.not = xor i1 %cmp.i.i.not, true
58  %brmerge = select i1 %cmp.i.i.not.not, i1 true, i1 %cmp3.i.i
59  %spec.select34 = select i1 %cmp8.i.i, i32 1, i32 %..i.i
60  %retval.0.i.i = select i1 %brmerge, i32 0, i32 %spec.select34
61  %add9 = add i32 %retval.0.i.i, %conv
62  %conv10 = sext i32 %add9 to i64
63  %cmp12 = icmp slt i64 %conv10, 0
64  br i1 %cmp12, label %for.body14, label %for.end25
65
66for.body14:  ; preds = %for.cond7
67  ret void
68
69for.end25:  ; preds = %for.cond7, %for.cond7.us.us
70  %conv35 = zext i16 %lb to i32
71  %cmp = icmp slt i32 %conv35, 0
72  br i1 %cmp, label %for.cond7.preheader, label %for.end36
73
74for.end36:  ; preds = %for.end25
75  ret void
76}
77