1 ; RUN: opt < %s -gvn -o /dev/null -S -pass-remarks=gvn -pass-remarks-missed=gvn \
2 ; RUN: 2>&1 | FileCheck %s
3 ; RUN: opt < %s -gvn -o /dev/null -pass-remarks-output=%t -S
4 ; RUN: cat %t | FileCheck -check-prefix=YAML %s
6 ; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -o /dev/null -S -pass-remarks=gvn -pass-remarks-missed=gvn \
7 ; RUN: 2>&1 | FileCheck %s
8 ; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -o /dev/null -pass-remarks-output=%t -S
9 ; RUN: cat %t | FileCheck -check-prefix=YAML %s
11 ; CHECK: remark: <unknown>:0:0: load of type i32 eliminated{{$}}
12 ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}}
13 ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}}
14 ; CHECK-NEXT: remark: /tmp/s.c:3:3: load of type i32 not eliminated
17 ; YAML-NEXT: Pass: gvn
18 ; YAML-NEXT: Name: LoadElim
19 ; YAML-NEXT: Function: arg
21 ; YAML-NEXT: - String: 'load of type '
22 ; YAML-NEXT: - Type: i32
23 ; YAML-NEXT: - String: ' eliminated'
24 ; YAML-NEXT: - String: ' in favor of '
25 ; YAML-NEXT: - InfavorOfValue: i
27 ; YAML-NEXT: --- !Passed
28 ; YAML-NEXT: Pass: gvn
29 ; YAML-NEXT: Name: LoadElim
30 ; YAML-NEXT: Function: const
32 ; YAML-NEXT: - String: 'load of type '
33 ; YAML-NEXT: - Type: i32
34 ; YAML-NEXT: - String: ' eliminated'
35 ; YAML-NEXT: - String: ' in favor of '
36 ; YAML-NEXT: - InfavorOfValue: '4'
38 ; YAML-NEXT: --- !Passed
39 ; YAML-NEXT: Pass: gvn
40 ; YAML-NEXT: Name: LoadElim
41 ; YAML-NEXT: Function: inst
43 ; YAML-NEXT: - String: 'load of type '
44 ; YAML-NEXT: - Type: i32
45 ; YAML-NEXT: - String: ' eliminated'
46 ; YAML-NEXT: - String: ' in favor of '
47 ; YAML-NEXT: - InfavorOfValue: load
49 ; YAML-NEXT: --- !Missed
50 ; YAML-NEXT: Pass: gvn
51 ; YAML-NEXT: Name: LoadClobbered
52 ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 3, Column: 3 }
53 ; YAML-NEXT: Function: may_alias
55 ; YAML-NEXT: - String: 'load of type '
56 ; YAML-NEXT: - Type: i32
57 ; YAML-NEXT: - String: ' not eliminated'
58 ; YAML-NEXT: - String: ' in favor of '
59 ; YAML-NEXT: - OtherAccess: load
60 ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 1, Column: 13 }
61 ; YAML-NEXT: - String: ' because it is clobbered by '
62 ; YAML-NEXT: - ClobberedBy: store
63 ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 2, Column: 10 }
66 define i32 @arg(i32* %p, i32 %i) {
69 %load = load i32, i32* %p
73 define i32 @const(i32* %p) {
76 %load = load i32, i32* %p
80 define i32 @inst(i32* %p) {
82 %load1 = load i32, i32* %p
83 %load = load i32, i32* %p
84 %add = add i32 %load1, %load
88 define i32 @may_alias(i32* %p, i32* %r) !dbg !7 {
90 %load1 = load i32, i32* %p, !tbaa !13, !dbg !9
91 store i32 4, i32* %r, !tbaa !13, !dbg !10
92 %load = load i32, i32* %p, !tbaa !13, !dbg !11
93 %add = add i32 %load1, %load
97 !llvm.module.flags = !{!3, !4, !5}
100 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 282540) (llvm/trunk 282542)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
101 !1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")
103 !3 = !{i32 2, !"Dwarf Version", i32 4}
104 !4 = !{i32 2, !"Debug Info Version", i32 3}
105 !5 = !{i32 1, !"PIC Level", i32 2}
106 !6 = !{!"clang version 4.0.0 (trunk 282540) (llvm/trunk 282542)"}
107 !7 = distinct !DISubprogram(name: "may_alias", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !2)
108 !8 = !DISubroutineType(types: !2)
109 !9 = !DILocation(line: 1, column: 13, scope: !7)
110 !10 = !DILocation(line: 2, column: 10, scope: !7)
111 !11 = !DILocation(line: 3, column: 3, scope: !7)
113 !12 = !{ !"tbaa root" }
114 !13 = !{ !"int", !12 }