| ; RUN: opt < %s -passes=gvn -o /dev/null -S -pass-remarks=gvn -pass-remarks-missed=gvn \ |
| ; RUN: 2>&1 | FileCheck %s |
| ; RUN: opt < %s -passes=gvn -o /dev/null -pass-remarks-output=%t -S |
| ; RUN: cat %t | FileCheck -check-prefix=YAML %s |
| |
| ; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -o /dev/null -S -pass-remarks=gvn -pass-remarks-missed=gvn \ |
| ; RUN: 2>&1 | FileCheck %s |
| ; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -o /dev/null -pass-remarks-output=%t -S |
| ; RUN: cat %t | FileCheck -check-prefix=YAML %s |
| |
| ; CHECK: remark: <unknown>:0:0: load of type i32 eliminated{{$}} |
| ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}} |
| ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}} |
| ; CHECK-NEXT: remark: /tmp/s.c:3:3: load of type i32 not eliminated |
| |
| ; YAML: --- !Passed |
| ; YAML-NEXT: Pass: gvn |
| ; YAML-NEXT: Name: LoadElim |
| ; YAML-NEXT: Function: arg |
| ; YAML-NEXT: Args: |
| ; YAML-NEXT: - String: 'load of type ' |
| ; YAML-NEXT: - Type: i32 |
| ; YAML-NEXT: - String: ' eliminated' |
| ; YAML-NEXT: - String: ' in favor of ' |
| ; YAML-NEXT: - InfavorOfValue: i |
| ; YAML-NEXT: ... |
| ; YAML-NEXT: --- !Passed |
| ; YAML-NEXT: Pass: gvn |
| ; YAML-NEXT: Name: LoadElim |
| ; YAML-NEXT: Function: const |
| ; YAML-NEXT: Args: |
| ; YAML-NEXT: - String: 'load of type ' |
| ; YAML-NEXT: - Type: i32 |
| ; YAML-NEXT: - String: ' eliminated' |
| ; YAML-NEXT: - String: ' in favor of ' |
| ; YAML-NEXT: - InfavorOfValue: '4' |
| ; YAML-NEXT: ... |
| ; YAML-NEXT: --- !Passed |
| ; YAML-NEXT: Pass: gvn |
| ; YAML-NEXT: Name: LoadElim |
| ; YAML-NEXT: Function: inst |
| ; YAML-NEXT: Args: |
| ; YAML-NEXT: - String: 'load of type ' |
| ; YAML-NEXT: - Type: i32 |
| ; YAML-NEXT: - String: ' eliminated' |
| ; YAML-NEXT: - String: ' in favor of ' |
| ; YAML-NEXT: - InfavorOfValue: load |
| ; YAML-NEXT: ... |
| ; YAML-NEXT: --- !Missed |
| ; YAML-NEXT: Pass: gvn |
| ; YAML-NEXT: Name: LoadClobbered |
| ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 3, Column: 3 } |
| ; YAML-NEXT: Function: may_alias |
| ; YAML-NEXT: Args: |
| ; YAML-NEXT: - String: 'load of type ' |
| ; YAML-NEXT: - Type: i32 |
| ; YAML-NEXT: - String: ' not eliminated' |
| ; YAML-NEXT: - String: ' in favor of ' |
| ; YAML-NEXT: - OtherAccess: load |
| ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 1, Column: 13 } |
| ; YAML-NEXT: - String: ' because it is clobbered by ' |
| ; YAML-NEXT: - ClobberedBy: store |
| ; YAML-NEXT: DebugLoc: { File: '/tmp/s.c', Line: 2, Column: 10 } |
| ; YAML-NEXT: ... |
| |
| define i32 @arg(ptr %p, i32 %i) { |
| entry: |
| store i32 %i, ptr %p |
| %load = load i32, ptr %p |
| ret i32 %load |
| } |
| |
| define i32 @const(ptr %p) { |
| entry: |
| store i32 4, ptr %p |
| %load = load i32, ptr %p |
| ret i32 %load |
| } |
| |
| define i32 @inst(ptr %p) { |
| entry: |
| %load1 = load i32, ptr %p |
| %load = load i32, ptr %p |
| %add = add i32 %load1, %load |
| ret i32 %add |
| } |
| |
| define i32 @may_alias(ptr %p, ptr %r) !dbg !7 { |
| entry: |
| %load1 = load i32, ptr %p, !tbaa !13, !dbg !9 |
| store i32 4, ptr %r, !tbaa !13, !dbg !10 |
| %load = load i32, ptr %p, !tbaa !13, !dbg !11 |
| %add = add i32 %load1, %load |
| ret i32 %add |
| } |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !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) |
| !1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 4.0.0 (trunk 282540) (llvm/trunk 282542)"} |
| !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) |
| !8 = !DISubroutineType(types: !2) |
| !9 = !DILocation(line: 1, column: 13, scope: !7) |
| !10 = !DILocation(line: 2, column: 10, scope: !7) |
| !11 = !DILocation(line: 3, column: 3, scope: !7) |
| |
| !12 = !{ !"tbaa root" } |
| !13 = !{ !"int", !12 } |