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 5 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 10 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 15 16 ; YAML: --- !Passed 17 ; YAML-NEXT: Pass: gvn 18 ; YAML-NEXT: Name: LoadElim 19 ; YAML-NEXT: Function: arg 20 ; YAML-NEXT: Args: 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 26 ; YAML-NEXT: ... 27 ; YAML-NEXT: --- !Passed 28 ; YAML-NEXT: Pass: gvn 29 ; YAML-NEXT: Name: LoadElim 30 ; YAML-NEXT: Function: const 31 ; YAML-NEXT: Args: 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' 37 ; YAML-NEXT: ... 38 ; YAML-NEXT: --- !Passed 39 ; YAML-NEXT: Pass: gvn 40 ; YAML-NEXT: Name: LoadElim 41 ; YAML-NEXT: Function: inst 42 ; YAML-NEXT: Args: 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 48 ; YAML-NEXT: ... 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 54 ; YAML-NEXT: Args: 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 } 64 ; YAML-NEXT: ... 65 66 define i32 @arg(i32* %p, i32 %i) { 67 entry: 68 store i32 %i, i32* %p 69 %load = load i32, i32* %p 70 ret i32 %load 71 } 72 73 define i32 @const(i32* %p) { 74 entry: 75 store i32 4, i32* %p 76 %load = load i32, i32* %p 77 ret i32 %load 78 } 79 80 define i32 @inst(i32* %p) { 81 entry: 82 %load1 = load i32, i32* %p 83 %load = load i32, i32* %p 84 %add = add i32 %load1, %load 85 ret i32 %add 86 } 87 88 define i32 @may_alias(i32* %p, i32* %r) !dbg !7 { 89 entry: 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 94 ret i32 %add 95 } 96 !llvm.dbg.cu = !{!0} 97 !llvm.module.flags = !{!3, !4, !5} 98 !llvm.ident = !{!6} 99 100 !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") 102 !2 = !{} 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) 112 113 !12 = !{ !"tbaa root" } 114 !13 = !{ !"int", !12 } 115
