Auto merge of #102717 - beetrees:repr128-c-style-debuginfo, r=nagisa

Pass 128-bit C-style enum enumerator values to LLVM

Pass the full 128 bits of C-style enum enumerators through to LLVM. This means that debuginfo for C-style repr128 enums is now emitted correctly for DWARF platforms (as compared to not being correctly emitted on any platform).

Tracking issue: #56071

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -2127,7 +2127,8 @@ extern "C" {
         Builder: &DIBuilder<'a>,
         Name: *const c_char,
         NameLen: size_t,
-        Value: i64,
+        Value: *const u64,
+        SizeInBits: c_uint,
         IsUnsigned: bool,
     ) -> &'a DIEnumerator;