1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -passes=mergeicmps < %s | FileCheck %s
4 target triple = "x86_64-unknown-linux-gnu"
6 %"struct.a::c" = type { i32, ptr, ptr }
8 ; The entry block cannot be merged as the comparison is not continuous.
9 ; While it compares the highest address, it should not be moved after the
10 ; other comparisons, as that would make the allocas non-dominating.
14 ; CHECK-NEXT: "land.lhs.true+entry":
15 ; CHECK-NEXT: [[H:%.*]] = alloca %"struct.a::c", align 8
16 ; CHECK-NEXT: [[I:%.*]] = alloca %"struct.a::c", align 8
17 ; CHECK-NEXT: call void @init(ptr [[H]])
18 ; CHECK-NEXT: call void @init(ptr [[I]])
19 ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.a::c", ptr [[H]], i64 0, i32 1
20 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds %"struct.a::c", ptr [[I]], i64 0, i32 1
21 ; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(ptr [[TMP0]], ptr [[TMP1]], i64 16)
22 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0
23 ; CHECK-NEXT: br i1 [[TMP2]], label [[LAND_RHS1:%.*]], label [[LAND_END:%.*]]
25 ; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[H]], align 8
26 ; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[I]], align 8
27 ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[TMP3]], [[TMP4]]
28 ; CHECK-NEXT: br label [[LAND_END]]
30 ; CHECK-NEXT: [[V9:%.*]] = phi i1 [ [[TMP5]], [[LAND_RHS1]] ], [ false, %"land.lhs.true+entry" ]
31 ; CHECK-NEXT: ret i1 [[V9]]
34 %h = alloca %"struct.a::c", align 8
35 %i = alloca %"struct.a::c", align 8
36 call void @init(ptr %h)
37 call void @init(ptr %i)
38 %e = getelementptr inbounds %"struct.a::c", ptr %h, i64 0, i32 2
39 %v3 = load ptr, ptr %e, align 8
40 %e2 = getelementptr inbounds %"struct.a::c", ptr %i, i64 0, i32 2
41 %v4 = load ptr, ptr %e2, align 8
42 %cmp = icmp eq ptr %v3, %v4
43 br i1 %cmp, label %land.lhs.true, label %land.end
45 land.lhs.true: ; preds = %entry
46 %d = getelementptr inbounds %"struct.a::c", ptr %h, i64 0, i32 1
47 %v5 = load ptr, ptr %d, align 8
48 %d3 = getelementptr inbounds %"struct.a::c", ptr %i, i64 0, i32 1
49 %v6 = load ptr, ptr %d3, align 8
50 %cmp4 = icmp eq ptr %v5, %v6
51 br i1 %cmp4, label %land.rhs, label %land.end
53 land.rhs: ; preds = %land.lhs.true
54 %v7 = load i32, ptr %h, align 8
55 %v8 = load i32, ptr %i, align 8
56 %cmp6 = icmp eq i32 %v7, %v8
59 land.end: ; preds = %land.rhs, %land.lhs.true, %entry
60 %v9 = phi i1 [ false, %land.lhs.true ], [ false, %entry ], [ %cmp6, %land.rhs ]
64 declare void @init(ptr)