From 1348dc097d65dd3eb59046c933496cc7bc72e556 Mon Sep 17 00:00:00 2001 From: Eric Christopher Date: Thu, 27 Feb 2014 07:44:45 +0000 Subject: Don't emit anything into the debug_ranges section if we aren't emitting any ranges - this includes CU ranges where we were previously emitting an end list marker even if we didn't have a list. Testcase includes a test for line table only code emission as the problem was noticed while writing this test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202357 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/DebugInfo/cu-line-tables.ll | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 test/DebugInfo/cu-line-tables.ll (limited to 'test/DebugInfo/cu-line-tables.ll') diff --git a/test/DebugInfo/cu-line-tables.ll b/test/DebugInfo/cu-line-tables.ll new file mode 100644 index 0000000000..493184dba1 --- /dev/null +++ b/test/DebugInfo/cu-line-tables.ll @@ -0,0 +1,50 @@ +; REQUIRES: object-emission +; RUN: %llc_dwarf -O0 -filetype=obj -generate-dwarf-cu-ranges %s -o %t +; RUN: llvm-dwarfdump %t | FileCheck %s + +; Check that we don't emit ranges even if the option is passed if we're emitting line tables only. + +; CHECK: DW_TAG_compile_unit +; CHECK-NOT: DW_AT_ranges +; CHECK: DW_TAG_subprogram + +; FIXME: We probably want to avoid printing out anything if the section isn't there. +; CHECK: .debug_ranges contents: +; CHECK-NOT: 00000000 + +; Function Attrs: nounwind uwtable +define i32 @f(i32 %a) #0 { +entry: + %a.addr = alloca i32, align 4 + store i32 %a, i32* %a.addr, align 4 + call void @llvm.dbg.declare(metadata !{i32* %a.addr}, metadata !12), !dbg !13 + %0 = load i32* %a.addr, align 4, !dbg !14 + %add = add nsw i32 %0, 4, !dbg !14 + ret i32 %add, !dbg !14 +} + +; Function Attrs: nounwind readnone +declare void @llvm.dbg.declare(metadata, metadata) #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 = { nounwind readnone } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!9, !10} +!llvm.ident = !{!11} + +!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5 (trunk 197756) (llvm/trunk 197768)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 2} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/tmp/foo.c] [DW_LANG_C99] +!1 = metadata !{metadata !"foo.c", metadata !"/usr/local/google/home/echristo/tmp"} +!2 = metadata !{} +!3 = metadata !{metadata !4} +!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"f", metadata !"f", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32)* @f, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [f] +!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/tmp/foo.c] +!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!7 = metadata !{metadata !8, metadata !8} +!8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] +!9 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} +!10 = metadata !{i32 1, metadata !"Debug Info Version", i32 1} +!11 = metadata !{metadata !"clang version 3.5 (trunk 197756) (llvm/trunk 197768)"} +!12 = metadata !{i32 786689, metadata !4, metadata !"a", metadata !5, i32 16777217, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [a] [line 1] +!13 = metadata !{i32 1, i32 0, metadata !4, null} +!14 = metadata !{i32 2, i32 0, metadata !4, null} -- cgit v1.2.3