[llvm] [debuginfo] Add DW_AT_type support to DW_TAG_string_type DIEs (1 of 3) (PR #217419)

[Jeremy Morse via llvm-commits]

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@@ -7346,10 +7346,12 @@ The `name:` field is mandatory. The `configMacros:`, `includePath:`,
 dynamic length and location encoded as an expression.
 The `tag:` field is optional and defaults to `DW_TAG_string_type`. The `name:`,
 `stringLength:`, `stringLengthExpression`, `stringLocationExpression:`,
-`size:`, `align:`, and `encoding:` fields are optional.
+`size:`, `align:`, `encoding:`, and `charType:` fields are optional.
 
 If not present, the `size:` and `align:` fields default to the value zero.
 
+`charType:` allows representation of non-default character types.
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jmorse wrote:

Nit: wording that specifies the meaning of the field would be better, "specifies a non-default character type" perhaps?

https://github.com/llvm/llvm-project/pull/217419