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
4 %S = type { i32, i32, i32, i32 }
8 ; We can discard %entry and %land.rhs.i, but still merge the last 2 blocks.
9 define zeroext i1 @opeq1(
12 ; X86-NEXT: [[FIRST_I:%.*]] = getelementptr inbounds [[S:%.*]], %S* [[A:%.*]], i64 0, i32 0
13 ; X86-NEXT: [[TMP0:%.*]] = load i32, i32* [[FIRST_I]], align 4
14 ; X86-NEXT: [[FIRST1_I:%.*]] = getelementptr inbounds [[S]], %S* [[B:%.*]], i64 0, i32 0
15 ; X86-NEXT: [[TMP1:%.*]] = load i32, i32* [[FIRST1_I]], align 4
16 ; X86-NEXT: call void (...) @foo()
17 ; X86-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]
18 ; X86-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]]
20 ; X86-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 1
21 ; X86-NEXT: [[TMP2:%.*]] = load i32, i32* [[SECOND_I]], align 4
22 ; X86-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 1
23 ; X86-NEXT: [[TMP3:%.*]] = load i32, i32* [[SECOND2_I]], align 4
24 ; X86-NEXT: call void (...) @foo()
25 ; X86-NEXT: [[CMP2_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
26 ; X86-NEXT: br i1 [[CMP2_I]], label %"land.rhs.i.2+land.rhs.i.3", label [[OPEQ1_EXIT]]
27 ; X86: "land.rhs.i.2+land.rhs.i.3":
28 ; X86-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], %S* [[A]], i64 0, i32 2
29 ; X86-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[S]], %S* [[B]], i64 0, i32 2
30 ; X86-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP4]] to i8*
31 ; X86-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP5]] to i8*
32 ; X86-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR1]], i64 8)
33 ; X86-NEXT: [[TMP6:%.*]] = icmp eq i32 [[MEMCMP]], 0
34 ; X86-NEXT: br label [[OPEQ1_EXIT]]
36 ; X86-NEXT: [[TMP7:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ false, [[LAND_RHS_I]] ], [ [[TMP6]], %"land.rhs.i.2+land.rhs.i.3" ]
37 ; X86-NEXT: ret i1 [[TMP7]]
39 %S* nocapture readonly dereferenceable(16) %a,
40 %S* nocapture readonly dereferenceable(16) %b) local_unnamed_addr #0 {
42 %first.i = getelementptr inbounds %S, %S* %a, i64 0, i32 0
43 %0 = load i32, i32* %first.i, align 4
44 %first1.i = getelementptr inbounds %S, %S* %b, i64 0, i32 0
45 %1 = load i32, i32* %first1.i, align 4
47 call void (...) @foo()
48 %cmp.i = icmp eq i32 %0, %1
49 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
52 %second.i = getelementptr inbounds %S, %S* %a, i64 0, i32 1
53 %2 = load i32, i32* %second.i, align 4
54 %second2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 1
55 %3 = load i32, i32* %second2.i, align 4
57 call void (...) @foo()
58 %cmp2.i = icmp eq i32 %2, %3
59 br i1 %cmp2.i, label %land.rhs.i.2, label %opeq1.exit
62 %third.i = getelementptr inbounds %S, %S* %a, i64 0, i32 2
63 %4 = load i32, i32* %third.i, align 4
64 %third2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 2
65 %5 = load i32, i32* %third2.i, align 4
66 %cmp3.i = icmp eq i32 %4, %5
67 br i1 %cmp3.i, label %land.rhs.i.3, label %opeq1.exit
70 %fourth.i = getelementptr inbounds %S, %S* %a, i64 0, i32 3
71 %6 = load i32, i32* %fourth.i, align 4
72 %fourth2.i = getelementptr inbounds %S, %S* %b, i64 0, i32 3
73 %7 = load i32, i32* %fourth2.i, align 4
74 %cmp4.i = icmp eq i32 %6, %7
78 %8 = phi i1 [ false, %entry ], [ false, %land.rhs.i] , [ false, %land.rhs.i.2 ], [ %cmp4.i, %land.rhs.i.3 ]