mips: Remove compiler check in unroll macro

CONFIG_CC_IS_GCC is undefined when Clang is used, which breaks the build
(see our Travis link below).

Clang 8 was chosen as a minimum version for this check because there
were some improvements around __builtin_constant_p in that release. In
reality, MIPS was not even buildable until clang 9 so that check was not
technically necessary. Just remove all compiler checks and just assume
that we have a working compiler.

Fixes: d4e60453266b ("Restore gcc check in mips asm/unroll.h")
Link: https://travis-ci.com/github/ClangBuiltLinux/continuous-integration/jobs/359642821
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/mips/include/asm/unroll.h b/arch/mips/include/asm/unroll.h
index 4900931..7dd4a80 100644 (file)
--- a/arch/mips/include/asm/unroll.h
+++ b/arch/mips/include/asm/unroll.h
@@ -25,9 +25,7 @@
         * generate reasonable code for the switch statement,   \
         * so we skip the sanity check for those compilers.     \
         */                                                     \
-       BUILD_BUG_ON((CONFIG_CC_IS_GCC ||                       \
-                     CONFIG_CLANG_VERSION >= 80000) &&         \
-                    !__builtin_constant_p(times));             \
+       BUILD_BUG_ON(!__builtin_constant_p(times));             \
                                                                \
        switch (times) {                                        \
        case 32: fn(__VA_ARGS__); /* fall through */            \