DI: Remove DW_TAG_arg_variable and DW_TAG_auto_variable

Remove the fake `DW_TAG_auto_variable` and `DW_TAG_arg_variable` tags,
using `DW_TAG_variable` in their place Stop exposing the `tag:` field at
all in the assembly format for `DILocalVariable`.

Most of the testcase updates were generated by the following sed script:

    find test/ -name "*.ll" -o -name "*.mir" |
    xargs grep -l 'DILocalVariable' |
    xargs sed -i '' \
      -e 's/tag: DW_TAG_arg_variable, //' \
      -e 's/tag: DW_TAG_auto_variable, //'

There were only a handful of tests in `test/Assembly` that I needed to
update by hand.

(Note: a follow-up could change `DILocalVariable::DILocalVariable()` to
set the tag to `DW_TAG_formal_parameter` instead of `DW_TAG_variable`
(as appropriate), instead of having that logic magically in the backend
in `DbgVariable`.  I've added a FIXME to that effect.)

llvm-svn: 243774

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/test/DebugInfo/ARM/lowerbdgdeclare_vla.ll b/llvm/test/DebugInfo/ARM/lowerbdgdeclare_vla.ll
index daf26507a03..1efa46c16e7 100644
--- a/llvm/test/DebugInfo/ARM/lowerbdgdeclare_vla.ll
+++ b/llvm/test/DebugInfo/ARM/lowerbdgdeclare_vla.ll
@@ -78,14 +78,14 @@ attributes #1 = { nounwind readnone }
 !8 = !{null, !9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !10 = !{!11, !12, !14, !18}
-!11 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "r", line: 1, arg: 1, scope: !4, file: !6, type: !9)
-!12 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "count", line: 3, scope: !4, file: !6, type: !13)
+!11 = !DILocalVariable(name: "r", line: 1, arg: 1, scope: !4, file: !6, type: !9)
+!12 = !DILocalVariable(name: "count", line: 3, scope: !4, file: !6, type: !13)
 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!14 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "vla", line: 4, scope: !4, file: !6, type: !15)
+!14 = !DILocalVariable(name: "vla", line: 4, scope: !4, file: !6, type: !15)
 !15 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !9, elements: !16)
 !16 = !{!17}
 !17 = !DISubrange(count: -1)
-!18 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 6, scope: !19, file: !6, type: !13)
+!18 = !DILocalVariable(name: "i", line: 6, scope: !19, file: !6, type: !13)
 !19 = distinct !DILexicalBlock(line: 6, column: 0, file: !5, scope: !4)
 !20 = !{i32 2, !"Dwarf Version", i32 2}
 !21 = !{!"clang version 3.4 "}