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
4 %S = type { i32, i32, i32, i32 }
6 ; The entry block is part of the chain. It however can not be merged. We need to
7 ; make sure that the control flow is still consistent (goes through each of the
10 define zeroext i1 @opeq1(
11 ; CHECK-LABEL: @opeq1(
13 ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[S:%.*]], ptr [[A:%.*]], i64 0, i32 3
14 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[S]], ptr [[B:%.*]], i64 0, i32 2
15 ; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP0]], align 4
16 ; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP1]], align 4
17 ; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP2]], [[TMP3]]
18 ; CHECK-NEXT: br i1 [[TMP4]], label %"land.rhs.i+land.rhs.i.2", label [[OPEQ1_EXIT:%.*]]
19 ; CHECK: "land.rhs.i+land.rhs.i.2":
20 ; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(ptr [[A]], ptr [[B]], i64 8)
21 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[MEMCMP]], 0
22 ; CHECK-NEXT: br i1 [[TMP5]], label [[LAND_RHS_I_31:%.*]], label [[OPEQ1_EXIT]]
23 ; CHECK: land.rhs.i.31:
24 ; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[S]], ptr [[A]], i64 0, i32 3
25 ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [[S]], ptr [[B]], i64 0, i32 3
26 ; CHECK-NEXT: [[TMP8:%.*]] = load i32, ptr [[TMP6]], align 4
27 ; CHECK-NEXT: [[TMP9:%.*]] = load i32, ptr [[TMP7]], align 4
28 ; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[TMP8]], [[TMP9]]
29 ; CHECK-NEXT: br label [[OPEQ1_EXIT]]
31 ; CHECK-NEXT: [[TMP11:%.*]] = phi i1 [ [[TMP10]], [[LAND_RHS_I_31]] ], [ false, %"land.rhs.i+land.rhs.i.2" ], [ false, [[ENTRY2:%.*]] ]
32 ; CHECK-NEXT: ret i1 [[TMP11]]
34 ptr nocapture readonly dereferenceable(16) %a,
35 ptr nocapture readonly dereferenceable(16) %b) local_unnamed_addr nofree nosync {
37 %first.i = getelementptr inbounds %S, ptr %a, i64 0, i32 3
38 %0 = load i32, ptr %first.i, align 4
39 %first1.i = getelementptr inbounds %S, ptr %b, i64 0, i32 2
40 %1 = load i32, ptr %first1.i, align 4
41 %cmp.i = icmp eq i32 %0, %1
42 br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit
45 %2 = load i32, ptr %a, align 4
46 %3 = load i32, ptr %b, align 4
47 %cmp3.i = icmp eq i32 %2, %3
48 br i1 %cmp3.i, label %land.rhs.i.2, label %opeq1.exit
51 %third.i = getelementptr inbounds %S, ptr %a, i64 0, i32 1
52 %4 = load i32, ptr %third.i, align 4
53 %third2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 1
54 %5 = load i32, ptr %third2.i, align 4
55 %cmp4.i = icmp eq i32 %4, %5
56 br i1 %cmp4.i, label %land.rhs.i.3, label %opeq1.exit
59 %fourth.i = getelementptr inbounds %S, ptr %a, i64 0, i32 3
60 %6 = load i32, ptr %fourth.i, align 4
61 %fourth2.i = getelementptr inbounds %S, ptr %b, i64 0, i32 3
62 %7 = load i32, ptr %fourth2.i, align 4
63 %cmp5.i = icmp eq i32 %6, %7
67 %8 = phi i1 [ false, %entry ], [ false, %land.rhs.i], [ false, %land.rhs.i.2 ], [ %cmp5.i, %land.rhs.i.3 ]