LLParser: Require non-null scope for MDLocation and MDLocalVariable
Change `LLParser` to require a non-null `scope:` field for both
`MDLocation` and `MDLocalVariable`. There's no need to wait for the
verifier for this check. This also allows their `::getImpl()` methods
to assert that the incoming scope is non-null.
llvm-svn: 233394
diff --git a/llvm/test/CodeGen/Generic/dbg_value.ll b/llvm/test/CodeGen/Generic/dbg_value.ll
index c5200d7..f2f3a3f 100644
--- a/llvm/test/CodeGen/Generic/dbg_value.ll
+++ b/llvm/test/CodeGen/Generic/dbg_value.ll
@@ -11,4 +11,4 @@
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
; !0 should conform to the format of DIVariable.
-!0 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", arg: 0, scope: null)
+!0 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", arg: 0, scope: !MDSubprogram())