MIPS: Loongson64: Clean up use of cc-ifversion
This Makefile checks that GCC is 4.9 or newer, which is redundant after commit 76ae8474 ("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>
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