================
@@ -62,7 +62,10 @@ struct RegisterInfo {
/// rax ax, ah, and al.
uint32_t *invalidate_regs;
/// If not nullptr, a type defined by XML descriptions.
- const RegisterFlags *flags_type;
+ /// This is mutable so that it may be updated after the register info tables
+ /// have been constructed. For example a specific target OS may have a
+ /// different layout.
+ mutable const RegisterFlags *flags_type;
----------------
DavidSpickett wrote:
My intent is that the `RegisterFlags` pointed to is const, but that you can
change which `RegisterFlags` is pointed to. Or in other words, you can change
the information but only if you change all the fields at once.
Whether what I have written does that, I will double check, and expand the
comment to clarify.
https://github.com/llvm/llvm-project/pull/70300
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