Nathan Chancellor 0e96ea5c3e MIPS: Loongson64: Clean up use of cc-ifversion
This Makefile checks that GCC is 4.9 or newer, which is redundant after
commit 76ae847497bc ("Documentation: raise minimum supported version of
GCC to 5.1"), so cc-option can be removed.

Clang does not support -march=loongson3a so it needs to continue to use
-march=mips64r2, which no longer needs cc-option because all supported
clang versions recognize this flag.

-march=loonson3a can be used unconditionally with GCC because the
minimum supported GCC version has been bumped past 4.9.0, which won't
have the bug mentioned in the comment. The _MIPS_ISA macro redefinition
can be removed at the same time for the same reason.

Suggested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2022-02-07 18:30:03 +01:00
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