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, 6 insertions, 6 deletions

diff --git a/llvm/test/DebugInfo/missing-abstract-variable.ll b/llvm/test/DebugInfo/missing-abstract-variable.ll
index 8a576c2bfd3..95ba7f9240b 100644
--- a/llvm/test/DebugInfo/missing-abstract-variable.ll
+++ b/llvm/test/DebugInfo/missing-abstract-variable.ll
@@ -148,11 +148,11 @@ attributes #2 = { nounwind readnone }
 !10 = !{null, !11}
 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean)
 !12 = !{!13}
-!13 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "u", line: 17, arg: 1, scope: !8, file: !5, type: !11)
+!13 = !DILocalVariable(name: "u", line: 17, arg: 1, scope: !8, file: !5, type: !11)
 !14 = !DISubprogram(name: "x", linkageName: "_Z1xb", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !1, scope: !5, type: !9, variables: !15)
 !15 = !{!16, !17}
-!16 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
-!17 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "s", line: 7, scope: !18, file: !5, type: !20)
+!16 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
+!17 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20)
 !18 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !19)
 !19 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !14)
 !20 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
@@ -160,13 +160,13 @@ attributes #2 = { nounwind readnone }
 !22 = !{i32 2, !"Debug Info Version", i32 3}
 !23 = !{!"clang version 3.5.0 "}
 !24 = !{i1 false}
-!25 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
+!25 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
 !26 = !DILocation(line: 14, scope: !4)
 !27 = !DILocation(line: 5, scope: !14, inlinedAt: !26)
 !28 = !DILocation(line: 10, scope: !14, inlinedAt: !26)
 !29 = !DILocation(line: 15, scope: !4)
 !30 = !DILocation(line: 17, scope: !8)
-!31 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
+!31 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11)
 !32 = !DILocation(line: 18, scope: !8)
 !33 = !DILocation(line: 5, scope: !14, inlinedAt: !32)
 !34 = !DILocation(line: 6, scope: !19, inlinedAt: !32)
@@ -175,7 +175,7 @@ attributes #2 = { nounwind readnone }
 !37 = !{!"int", !38, i64 0}
 !38 = !{!"omnipotent char", !39, i64 0}
 !39 = !{!"Simple C/C++ TBAA"}
-!40 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "s", line: 7, scope: !18, file: !5, type: !20)
+!40 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20)
 !41 = !DILocation(line: 8, scope: !18, inlinedAt: !32)
 !42 = !DILocation(line: 9, scope: !18, inlinedAt: !32)
 !43 = !DILocation(line: 10, scope: !14, inlinedAt: !32)