3 Commits

Author	SHA1	Message	Date
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
Arthur Eubanks	b7ac16c70f	[clang] Default x86-64's medium code model -mlarge-data-threshold to 65535 (#67506) ... This matches gcc. This means that by default, under x86-64's medium code model we treat globals < 2^16 bytes as "small data" and globals >= 2^16 bytes as "large data". The previous clang behavior of treating all data as "large data" can be set with `-mlarge-data-threshold=0`. See https://discourse.llvm.org/t/rfc-matching-gccs-mlarge-data-threshold-for-x86-64s-medium-code-model/73727.	2023-10-04 13:06:23 -07:00
Arthur Eubanks	a42787d108	[clang] Add -mlarge-data-threshold for x86_64 medium code model (#66839) ... Error if not used with x86_64. Warn if not used with the medium code model (can update if other code models end up using this). Set TargetMachine option and add module flag.	2023-09-26 09:44:31 -07:00