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/CodeGen/ARM/sched-it-debug-nodes.ll b/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll
index 7906e7c7581..f1026b6ece7 100644
--- a/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll
+++ b/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll
@@ -69,10 +69,10 @@ attributes #3 = { nounwind }
 !16 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
 !17 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !5, line: 3, baseType: !12)
 !18 = !{!19, !20, !21, !22}
-!19 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "s", arg: 1, scope: !4, file: !5, line: 9, type: !9)
-!20 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "u", arg: 2, scope: !4, file: !5, line: 9, type: !12)
-!21 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", arg: 3, scope: !4, file: !5, line: 9, type: !13)
-!22 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "n", arg: 4, scope: !4, file: !5, line: 9, type: !17)
+!19 = !DILocalVariable(name: "s", arg: 1, scope: !4, file: !5, line: 9, type: !9)
+!20 = !DILocalVariable(name: "u", arg: 2, scope: !4, file: !5, line: 9, type: !12)
+!21 = !DILocalVariable(name: "b", arg: 3, scope: !4, file: !5, line: 9, type: !13)
+!22 = !DILocalVariable(name: "n", arg: 4, scope: !4, file: !5, line: 9, type: !17)
 !23 = !{i32 2, !"Dwarf Version", i32 4}
 !24 = !{i32 2, !"Debug Info Version", i32 3}
 !25 = !{i32 1, !"wchar_size", i32 4}