1 ; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 < %s | FileCheck %s 2 ; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=line - | FileCheck %s --check-prefix=INT 3 4 ; Mips used to generate 'jumpy' debug line info around calls. The address 5 ; calculation for each call to f1() would share the same line info so it would 6 ; emit output of the form: 7 ; .loc $first_call_location 8 ; .. address calculation .. 9 ; .. function call .. 10 ; .. address calculation .. 11 ; .loc $second_call_location 12 ; .. function call .. 13 ; .loc $first_call_location 14 ; .. address calculation .. 15 ; .loc $third_call_location 16 ; .. function call .. 17 ; ... 18 ; which would cause confusing stepping behaviour for the end user. 19 ; 20 ; This test checks that we emit more user friendly debug line info of the form: 21 ; .loc $first_call_location 22 ; .. address calculation .. 23 ; .. function call .. 24 ; .loc $second_call_location 25 ; .. address calculation .. 26 ; .. function call .. 27 ; .loc $third_call_location 28 ; .. address calculation .. 29 ; .. function call .. 30 ; ... 31 ; 32 ; Generated with clang from fn-call-line.c: 33 ; void f1(); 34 ; void f2() { 35 ; f1(); 36 ; f1(); 37 ; } 38 39 ; CHECK: .loc 1 3 3 40 ; CHECK-NOT: .loc 41 ; CHECK: %call16(f1) 42 ; CHECK-NOT: .loc 43 ; CHECK: .loc 1 4 3 44 ; CHECK-NOT: .loc 45 ; CHECK: %call16(f1) 46 47 ; INT: {{^}}Address 48 ; INT: ----- 49 ; INT-NEXT: 2 0 1 0 0 is_stmt{{$}} 50 ; INT-NEXT: 3 3 1 0 0 is_stmt prologue_end{{$}} 51 ; INT-NEXT: 4 3 1 0 0 is_stmt{{$}} 52 53 54 ; Function Attrs: nounwind uwtable 55 define void @f2() #0 !dbg !4 { 56 entry: 57 call void (...) @f1(), !dbg !11 58 call void (...) @f1(), !dbg !12 59 ret void, !dbg !13 60 } 61 62 declare void @f1(...) #1 63 64 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 65 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 66 67 !llvm.dbg.cu = !{!0} 68 !llvm.module.flags = !{!8, !9} 69 !llvm.ident = !{!10} 70 71 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226641)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 72 !1 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") 73 !2 = !{} 74 !3 = !{!4} 75 !4 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, isOptimized: false, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2) 76 !5 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") 77 !6 = !DISubroutineType(types: !7) 78 !7 = !{null} 79 !8 = !{i32 2, !"Dwarf Version", i32 4} 80 !9 = !{i32 2, !"Debug Info Version", i32 3} 81 !10 = !{!"clang version 3.7.0 (trunk 226641)"} 82 !11 = !DILocation(line: 3, column: 3, scope: !4) 83 !12 = !DILocation(line: 4, column: 3, scope: !4) 84 !13 = !DILocation(line: 5, column: 1, scope: !4) 85
