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, 1 insertions, 1 deletions

diff --git a/llvm/test/Verifier/llvm.dbg.declare-expression.ll b/llvm/test/Verifier/llvm.dbg.declare-expression.ll
index 4c1bd65230a..2c89221a70e 100644
--- a/llvm/test/Verifier/llvm.dbg.declare-expression.ll
+++ b/llvm/test/Verifier/llvm.dbg.declare-expression.ll
@@ -6,7 +6,7 @@
 define void @foo(i32 %a) {
 entry:
   %s = alloca i32
-  call void @llvm.dbg.declare(metadata i32* %s, metadata !DILocalVariable(tag: DW_TAG_arg_variable, scope: !1), metadata !"")
+  call void @llvm.dbg.declare(metadata i32* %s, metadata !DILocalVariable(scope: !1), metadata !"")
   ret void
 }