1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=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: [[TMP0:%.*]] = load i32, ptr [[A:%.*]], align 4
13 ; X86-NEXT: [[TMP1:%.*]] = load i32, ptr [[B:%.*]], align 4
14 ; X86-NEXT: call void (...) @foo()
15 ; X86-NEXT: [[CMP_I:%.*]] = icmp eq i32 [[TMP0]], [[TMP1]]
16 ; X86-NEXT: br i1 [[CMP_I]], label [[LAND_RHS_I:%.*]], label [[OPEQ1_EXIT:%.*]]
18 ; X86-NEXT: [[SECOND_I:%.*]] = getelementptr inbounds [[S:%.*]], ptr [[A]], i64 0, i32 1
19 ; X86-NEXT: [[TMP2:%.*]] = load i32, ptr [[SECOND_I]], align 4
20 ; X86-NEXT: [[SECOND2_I:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 1
21 ; X86-NEXT: [[TMP3:%.*]] = load i32, ptr [[SECOND2_I]], align 4
22 ; X86-NEXT: call void (...) @foo()
23 ; X86-NEXT: [[CMP2_I:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
24 ; X86-NEXT: br i1 [[CMP2_I]], label %"land.rhs.i.2+land.rhs.i.3", label [[OPEQ1_EXIT]]
25 ; X86: "land.rhs.i.2+land.rhs.i.3":
26 ; X86-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[S]], ptr [[A]], i64 0, i32 2
27 ; X86-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 2
28 ; X86-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(ptr [[TMP4]], ptr [[TMP5]], i64 8)
29 ; X86-NEXT: [[TMP6:%.*]] = icmp eq i32 [[MEMCMP]], 0
30 ; X86-NEXT: br label [[OPEQ1_EXIT]]
32 ; X86-NEXT: [[TMP7:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ false, [[LAND_RHS_I]] ], [ [[TMP6]], %"land.rhs.i.2+land.rhs.i.3" ]
33 ; X86-NEXT: ret i1 [[TMP7]]
35 ptr nocapture readonly dereferenceable(16) %a,
36 ptr nocapture readonly dereferenceable(16) %b) local_unnamed_addr nofree nosync {
38 %0 = load i32, ptr %a, align 4
39 %1 = load i32, ptr %b, align 4
41 call void (...) @foo()
42 %cmp.i = icmp eq i32 %0, %1
43 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
46 %second.i = getelementptr inbounds %S, ptr %a, i64 0, i32 1
47 %2 = load i32, ptr %second.i, align 4
48 %second2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 1
49 %3 = load i32, ptr %second2.i, align 4
51 call void (...) @foo()
52 %cmp2.i = icmp eq i32 %2, %3
53 br i1 %cmp2.i, label %land.rhs.i.2, label %opeq1.exit
56 %third.i = getelementptr inbounds %S, ptr %a, i64 0, i32 2
57 %4 = load i32, ptr %third.i, align 4
58 %third2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 2
59 %5 = load i32, ptr %third2.i, align 4
60 %cmp3.i = icmp eq i32 %4, %5
61 br i1 %cmp3.i, label %land.rhs.i.3, label %opeq1.exit
64 %fourth.i = getelementptr inbounds %S, ptr %a, i64 0, i32 3
65 %6 = load i32, ptr %fourth.i, align 4
66 %fourth2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 3
67 %7 = load i32, ptr %fourth2.i, align 4
68 %cmp4.i = icmp eq i32 %6, %7
72 %8 = phi i1 [ false, %entry ], [ false, %land.rhs.i] , [ false, %land.rhs.i.2 ], [ %cmp4.i, %land.rhs.i.3 ]