diff options
Diffstat (limited to 'test/DebugInfo/Mips/fn-call-line.ll')
| -rw-r--r-- | test/DebugInfo/Mips/fn-call-line.ll | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/test/DebugInfo/Mips/fn-call-line.ll b/test/DebugInfo/Mips/fn-call-line.ll new file mode 100644 index 0000000..14cd8c9 --- /dev/null +++ b/test/DebugInfo/Mips/fn-call-line.ll @@ -0,0 +1,84 @@ +; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 < %s | FileCheck %s +; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=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 { +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" "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" } +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" } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!8, !9} +!llvm.ident = !{!10} + +!0 = !{!"0x11\0012\00clang version 3.7.0 (trunk 226641)\000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/fn-call-line.c] [DW_LANG_C99] +!1 = !{!"fn-call-line.c", !"/tmp/dbginfo"} +!2 = !{} +!3 = !{!4} +!4 = !{!"0x2e\00f2\00f2\00\002\000\001\000\000\000\000\002", !1, !5, !6, null, void ()* @f2, null, null, !2} ; [ DW_TAG_subprogram ] [line 2] [def] [f2] +!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/fn-call-line.c] +!6 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!7 = !{null} +!8 = !{i32 2, !"Dwarf Version", i32 4} +!9 = !{i32 2, !"Debug Info Version", i32 2} +!10 = !{!"clang version 3.7.0 (trunk 226641)"} +!11 = !MDLocation(line: 3, column: 3, scope: !4) +!12 = !MDLocation(line: 4, column: 3, scope: !4) +!13 = !MDLocation(line: 5, column: 1, scope: !4) |