1; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 -relocation-model=pic < %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 55define void @f2() #0 !dbg !4 { 56entry: 57 call void (...) @f1(), !dbg !11 58 call void (...) @f1(), !dbg !12 59 ret void, !dbg !13 60} 61 62declare void @f1(...) #1 63 64attributes #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" } 65attributes #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: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 72!1 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") 73!2 = !{} 74!4 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2) 75!5 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") 76!6 = !DISubroutineType(types: !7) 77!7 = !{null} 78!8 = !{i32 2, !"Dwarf Version", i32 4} 79!9 = !{i32 2, !"Debug Info Version", i32 3} 80!10 = !{!"clang version 3.7.0 (trunk 226641)"} 81!11 = !DILocation(line: 3, column: 3, scope: !4) 82!12 = !DILocation(line: 4, column: 3, scope: !4) 83!13 = !DILocation(line: 5, column: 1, scope: !4) 84