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, 5 insertions, 5 deletions

diff --git a/llvm/test/CodeGen/X86/2010-08-04-StackVariable.ll b/llvm/test/CodeGen/X86/2010-08-04-StackVariable.ll
index e2a2884e842..90f7271c0b6 100644
--- a/llvm/test/CodeGen/X86/2010-08-04-StackVariable.ll
+++ b/llvm/test/CodeGen/X86/2010-08-04-StackVariable.ll
@@ -101,28 +101,28 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !20 = !DISubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 23, file: !47, scope: !2, type: !21, function: i32 ()* @main)
 !21 = !DISubroutineType(types: !22)
 !22 = !{!13}
-!23 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13)
+!23 = !DILocalVariable(name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13)
 !24 = !DILocation(line: 16, scope: !17)
-!25 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26)
+!25 = !DILocalVariable(name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26)
 !26 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 64, align: 64, file: !47, scope: !2, baseType: !1)
 !27 = !DILocation(line: 17, scope: !28)
 !28 = distinct !DILexicalBlock(line: 16, column: 0, file: !47, scope: !17)
 !29 = !DILocation(line: 18, scope: !28)
 !30 = !DILocation(line: 20, scope: !28)
-!31 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32)
+!31 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32)
 !32 = !DIDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !33)
 !33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: !1)
 !34 = !DILocation(line: 11, scope: !16)
 !35 = !DILocation(line: 11, scope: !36)
 !36 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !37)
 !37 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !16)
-!38 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "v", line: 24, scope: !39, file: !2, type: !1)
+!38 = !DILocalVariable(name: "v", line: 24, scope: !39, file: !2, type: !1)
 !39 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !40)
 !40 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !20)
 !41 = !DILocation(line: 24, scope: !39)
 !42 = !DILocation(line: 25, scope: !39)
 !43 = !DILocation(line: 26, scope: !39)
-!44 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "k", line: 26, scope: !39, file: !2, type: !13)
+!44 = !DILocalVariable(name: "k", line: 26, scope: !39, file: !2, type: !13)
 !45 = !DILocation(line: 27, scope: !39)
 !47 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
 !48 = !{}