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LoongArch: Simplify __arch_bitrev32() implementation

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LoongArch has the bitrev.w instruction to reverse bits in a 32-bit
integer, thus there's no need to reverse the bytes and use bitrev.4b.

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Xi Ruoyao 2025-12-06 10:39:39 +08:00 committed by Huacai Chen
parent 10eda1c51c
commit 17fcc4bd7e
1 changed files with 1 additions and 1 deletions
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2
arch/loongarch/include/asm/bitrev.h
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@ -11,7 +11,7 @@ static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
{
u32 ret;
asm("bitrev.4b %0, %1" : "=r"(ret) : "r"(__swab32(x)));
asm("bitrev.w %0, %1" : "=r"(ret) : "r"(x));
return ret;
}