https://bugs.llvm.org/show_bug.cgi?id=47686
Bug ID: 47686
Summary: Implement -march=x86-64-v2, -march=x86-64-v3,
-march=x86-64-v4 for x86-64
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: fwei...@redhat.com
CC: craig.top...@gmail.com, llvm-bugs@lists.llvm.org,
llvm-...@redking.me.uk, spatel+l...@rotateright.com
x86-64-v2, x86-64-v3, x86-64-v4 have been added to the psABI as new
micro-architecture levels:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c
Clang should provide -march= options so that programmers can easily built
programs and shared objects that are optimized for these levels.
It would be nice to implement this at the LLVM level, so that multiple front
ends could use this functionality and achieve consistency (not just Clang).
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