| ; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 -relocation-model=pic < %s | FileCheck %s |
| ; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-line - | FileCheck %s --check-prefix=INT |
| |
| ; Mips used to generate 'jumpy' debug line info around calls. The address |
| ; calculation for each call to f1() would share the same line info so it would |
| ; emit output of the form: |
| ; .loc $first_call_location |
| ; .. address calculation .. |
| ; .. function call .. |
| ; .. address calculation .. |
| ; .loc $second_call_location |
| ; .. function call .. |
| ; .loc $first_call_location |
| ; .. address calculation .. |
| ; .loc $third_call_location |
| ; .. function call .. |
| ; ... |
| ; which would cause confusing stepping behaviour for the end user. |
| ; |
| ; This test checks that we emit more user friendly debug line info of the form: |
| ; .loc $first_call_location |
| ; .. address calculation .. |
| ; .. function call .. |
| ; .loc $second_call_location |
| ; .. address calculation .. |
| ; .. function call .. |
| ; .loc $third_call_location |
| ; .. address calculation .. |
| ; .. function call .. |
| ; ... |
| ; |
| ; Generated with clang from fn-call-line.c: |
| ; void f1(); |
| ; void f2() { |
| ; f1(); |
| ; f1(); |
| ; } |
| |
| ; CHECK: .loc 1 3 3 |
| ; CHECK-NOT: .loc |
| ; CHECK: %call16(f1) |
| ; CHECK-NOT: .loc |
| ; CHECK: .loc 1 4 3 |
| ; CHECK-NOT: .loc |
| ; CHECK: %call16(f1) |
| |
| ; INT: {{^}}Address |
| ; INT: ----- |
| ; INT-NEXT: 2 0 1 0 0 is_stmt{{$}} |
| ; INT-NEXT: 3 3 1 0 0 is_stmt prologue_end{{$}} |
| ; INT-NEXT: 4 3 1 0 0 is_stmt{{$}} |
| |
| |
| ; Function Attrs: nounwind uwtable |
| define void @f2() #0 !dbg !4 { |
| entry: |
| call void (...) @f1(), !dbg !11 |
| call void (...) @f1(), !dbg !12 |
| ret void, !dbg !13 |
| } |
| |
| declare void @f1(...) #1 |
| |
| attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9} |
| !llvm.ident = !{!10} |
| |
| !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) |
| !1 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2) |
| !5 = !DIFile(filename: "fn-call-line.c", directory: "/tmp/dbginfo") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = !{i32 2, !"Dwarf Version", i32 4} |
| !9 = !{i32 2, !"Debug Info Version", i32 3} |
| !10 = !{!"clang version 3.7.0 (trunk 226641)"} |
| !11 = !DILocation(line: 3, column: 3, scope: !4) |
| !12 = !DILocation(line: 4, column: 3, scope: !4) |
| !13 = !DILocation(line: 5, column: 1, scope: !4) |