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| author | Huacai Chen <chenhuacai@loongson.cn> | 2023-07-28 10:30:42 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-07-28 10:30:42 +0800 |
| commit | 1e74ae32805b6630c78bd7fb746fbfe936fb8f86 (patch) | |
| tree | 88f3bebf23de1035d42980c8774670adab7a9065 | |
| parent | 4eece7e6de94d833c8aeed2f438faf487cbf94ff (diff) | |
| download | xfs-lts-backports-1e74ae32805b6630c78bd7fb746fbfe936fb8f86.tar.gz | |
LoongArch: Cleanup __builtin_constant_p() checking for cpu_has_*
In the current configuration, cpu_has_lsx and cpu_has_lasx cannot be
constants. So cleanup the __builtin_constant_p() checking to reduce the
complexity.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/include/asm/fpu.h | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/arch/loongarch/include/asm/fpu.h b/arch/loongarch/include/asm/fpu.h index e4193d637f664e..b541f6248837ea 100644 --- a/arch/loongarch/include/asm/fpu.h +++ b/arch/loongarch/include/asm/fpu.h @@ -218,15 +218,8 @@ static inline void restore_lsx(struct task_struct *t) static inline void init_lsx_upper(void) { - /* - * Check cpu_has_lsx only if it's a constant. This will allow the - * compiler to optimise out code for CPUs without LSX without adding - * an extra redundant check for CPUs with LSX. - */ - if (__builtin_constant_p(cpu_has_lsx) && !cpu_has_lsx) - return; - - _init_lsx_upper(); + if (cpu_has_lsx) + _init_lsx_upper(); } static inline void restore_lsx_upper(struct task_struct *t) @@ -294,7 +287,7 @@ static inline void restore_lasx_upper(struct task_struct *t) {} static inline int thread_lsx_context_live(void) { - if (__builtin_constant_p(cpu_has_lsx) && !cpu_has_lsx) + if (!cpu_has_lsx) return 0; return test_thread_flag(TIF_LSX_CTX_LIVE); @@ -302,7 +295,7 @@ static inline int thread_lsx_context_live(void) static inline int thread_lasx_context_live(void) { - if (__builtin_constant_p(cpu_has_lasx) && !cpu_has_lasx) + if (!cpu_has_lasx) return 0; return test_thread_flag(TIF_LASX_CTX_LIVE); |