| |
| ; RUN: llc -mtriple=i386-linux-gnu -filetype=obj -relocation-model=pic %s -o /dev/null |
| |
| ; Derived from the test case in PR20367, there's nothing really positive to |
| ; test here (hence no FileCheck, etc). All that was wrong is that the debug info |
| ; intrinsics (introduced by inlining) in 'f1' were causing codegen to crash, but |
| ; since 'f1' is a nodebug function, there's no positive outcome to confirm, just |
| ; that debug info doesn't get in the way/cause a crash. |
| |
| ; The test case isn't particularly well reduced/tidy, but as simple as I could |
| ; get the C++ source. I assume the complexity is mostly just about producing a |
| ; certain amount of register pressure, so it might be able to be simplified/made |
| ; more uniform. |
| |
| ; Generated from: |
| ; $ clang-tot -cc1 -triple i386 -emit-obj -g -O3 repro.cpp |
| ; void sink(const ptr); |
| ; int source(); |
| ; void f3(int); |
| ; |
| ; extern bool b; |
| ; |
| ; struct string { |
| ; unsigned *mem; |
| ; }; |
| ; |
| ; extern string &str; |
| ; |
| ; inline __attribute__((always_inline)) void s2(string *lhs) { sink(lhs->mem); } |
| ; inline __attribute__((always_inline)) void f() { |
| ; string str2; |
| ; s2(&str2); |
| ; sink(&str2); |
| ; } |
| ; void __attribute__((nodebug)) f1() { |
| ; for (int iter = 0; iter != 2; ++iter) { |
| ; f(); |
| ; sink(str.mem); |
| ; if (b) return; |
| ; } |
| ; } |
| |
| %struct.string = type { ptr } |
| |
| @str = external constant ptr |
| @b = external global i8 |
| |
| ; Function Attrs: nounwind |
| define void @_Z2f1v() #0 { |
| entry: |
| %str2.i = alloca %struct.string, align 4 |
| %0 = load ptr, ptr @str, align 4 |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %iter.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| call void @llvm.lifetime.start(i64 4, ptr %str2.i), !dbg !26 |
| call void @llvm.dbg.value(metadata ptr %str2.i, metadata !16, metadata !DIExpression(DW_OP_deref)) #3, !dbg !26 |
| call void @llvm.dbg.value(metadata ptr %str2.i, metadata !27, metadata !DIExpression(DW_OP_deref)) #3, !dbg !29 |
| call void @_Z4sinkPKv(ptr undef) #3, !dbg !29 |
| call void @_Z4sinkPKv(ptr %str2.i) #3, !dbg !30 |
| call void @llvm.lifetime.end(i64 4, ptr %str2.i), !dbg !31 |
| %1 = load ptr, ptr %0, align 4, !tbaa !32 |
| call void @_Z4sinkPKv(ptr %1) #3 |
| %2 = load i8, ptr @b, align 1, !tbaa !37, !range !39 |
| %tobool = icmp ne i8 %2, 0 |
| %inc = add nsw i32 %iter.02, 1 |
| %cmp = icmp eq i32 %inc, 2 |
| %or.cond = or i1 %tobool, %cmp |
| br i1 %or.cond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |
| |
| declare void @_Z4sinkPKv(ptr) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.lifetime.start(i64, ptr nocapture) #3 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.lifetime.end(i64, ptr nocapture) #3 |
| |
| attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind readnone } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!23, !24} |
| !llvm.ident = !{!25} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "<stdin>", directory: "/tmp/dbginfo") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "string", line: 7, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS6string") |
| !5 = !DIFile(filename: "repro.cpp", directory: "/tmp/dbginfo") |
| !6 = !{!7} |
| !7 = !DIDerivedType(tag: DW_TAG_member, name: "mem", line: 8, size: 32, align: 32, file: !5, scope: !4, baseType: !8) |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !9) |
| !9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) |
| !11 = distinct !DISubprogram(name: "f", linkageName: "_Z1fv", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 14, file: !5, scope: !12, type: !13, retainedNodes: !15) |
| !12 = !DIFile(filename: "repro.cpp", directory: "/tmp/dbginfo") |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{null} |
| !15 = !{!16} |
| !16 = !DILocalVariable(name: "str2", line: 15, scope: !11, file: !12, type: !4) |
| !17 = distinct !DISubprogram(name: "s2", linkageName: "_Z2s2P6string", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 13, file: !5, scope: !12, type: !18, retainedNodes: !21) |
| !18 = !DISubroutineType(types: !19) |
| !19 = !{null, !20} |
| !20 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !4) |
| !21 = !{!22} |
| !22 = !DILocalVariable(name: "lhs", line: 13, arg: 1, scope: !17, file: !12, type: !20) |
| !23 = !{i32 2, !"Dwarf Version", i32 4} |
| !24 = !{i32 2, !"Debug Info Version", i32 3} |
| !25 = !{!"clang version 3.5.0 "} |
| !26 = !DILocation(line: 15, scope: !11) |
| !27 = !DILocalVariable(name: "lhs", line: 13, arg: 1, scope: !17, file: !12, type: !20) |
| !28 = !DILocation(line: 16, scope: !11) |
| !29 = !DILocation(line: 13, scope: !17, inlinedAt: !28) |
| !30 = !DILocation(line: 17, scope: !11) |
| !31 = !DILocation(line: 18, scope: !11) |
| !32 = !{!33, !34, i64 0} |
| !33 = !{!"struct", !34, i64 0} |
| !34 = !{!"any pointer", !35, i64 0} |
| !35 = !{!"omnipotent char", !36, i64 0} |
| !36 = !{!"Simple C/C++ TBAA"} |
| !37 = !{!38, !38, i64 0} |
| !38 = !{!"bool", !35, i64 0} |
| !39 = !{i8 0, i8 2} |