1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -mergeicmps -verify-dom-info -mtriple=x86_64-unknown-unknown -S | FileCheck %s --check-prefix=X86
3
4%S = type { i32, i32 }
5
6; This tests a function with two complex basic blocks.
7define zeroext i1 @twocomplexblocks(
8; X86-LABEL: @twocomplexblocks(
9; X86-NEXT:  entry:
10; X86-NEXT:    [[FIRST_I:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 0
11; X86-NEXT:    [[TMP0:%.*]] = load i32, i32* [[FIRST_I]], align 4
12; X86-NEXT:    [[FIRST1_I:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 0
13; X86-NEXT:    [[TMP1:%.*]] = load i32, i32* [[FIRST1_I]], align 4
14; X86-NEXT:    [[EXTRAWORK:%.*]] = add i32 [[TMP0]], [[TMP1]]
15; X86-NEXT:    [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]
16; X86-NEXT:    br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]]
17; X86:       land.rhs.i:
18; X86-NEXT:    [[SECOND_I:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 1
19; X86-NEXT:    [[TMP2:%.*]] = load i32, i32* [[SECOND_I]], align 4
20; X86-NEXT:    [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 1
21; X86-NEXT:    [[TMP3:%.*]] = load i32, i32* [[SECOND2_I]], align 4
22; X86-NEXT:    [[EXTRAWORK2:%.*]] = add i32 [[TMP2]], [[TMP3]]
23; X86-NEXT:    [[CMP3_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
24; X86-NEXT:    br label [[OPEQ1_EXIT]]
25; X86:       opeq1.exit:
26; X86-NEXT:    [[TMP4:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[CMP3_I]], [[LAND_RHS_I]] ]
27; X86-NEXT:    ret i1 [[TMP4]]
28;
29  %S* nocapture readonly dereferenceable(8) %a,
30  %S* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
31entry:
32  ; This is a complex BCE Basic Block.
33  %first.i = getelementptr inbounds %S, %S* %a, i64 0, i32 0
34  %0 = load i32, i32* %first.i, align 4
35  %first1.i = getelementptr inbounds %S, %S* %b, i64 0, i32 0
36  %1 = load i32, i32* %first1.i, align 4
37  %extrawork = add i32 %0, %1
38  %cmp.i = icmp eq i32 %0, %1
39  br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
40
41land.rhs.i:
42  ; This is a complex BCE Basic Block.
43  %second.i = getelementptr inbounds %S, %S* %a, i64 0, i32 1
44  %2 = load i32, i32* %second.i, align 4
45  %second2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 1
46  %3 = load i32, i32* %second2.i, align 4
47  %extrawork2 = add i32 %2, %3
48  %cmp3.i = icmp eq i32 %2, %3
49  br label %opeq1.exit
50
51opeq1.exit:
52  %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
53  ret i1 %4
54}
55