Arthur Eubanks f05b081214 [clang] Adjust -mlarge-data-threshold handling (#77958) ...

Make it apply to x86-64 medium and large code models since that's what
the backend does.

Limit logic to exclude x86-32.

Default to 0, let the driver set it to 65536 for the medium code model
if one is not passed. Set it to 0 for the large code model by default to
match gcc and since some users make assumptions about the large code
model that any small data will break.

2024-01-12 12:23:42 -08:00

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