https://bugs.llvm.org/show_bug.cgi?id=44125
Bug ID: 44125
Summary: [X86] Make preferred execution domain target specific
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
We currently always prefer the fp domain for vector instructions, I think
mainly to minimize codesize, but some targets (e.g. more recent Intel big
cores) can execute the integer equivalent instructions on more ports and can
easily absorb the codesize increase in the frontend.
We should be able to override the preferred domain for specific target cpus,
although maybe still always chose fp for min codesize cases.
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