[PATCH] ARC: bitops: Remove unecessary operation and value

From: Gustavo Pimentel
Date: Wed Oct 21 2020 - 17:12:35 EST


The 1-bit shift rotation to the left on x variable located on
4 last if statement can be removed because the computed value is will
not be used afront.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
---
arch/arc/include/asm/bitops.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h
index 50eb3f6..8cddddc 100644
--- a/arch/arc/include/asm/bitops.h
+++ b/arch/arc/include/asm/bitops.h
@@ -297,10 +297,8 @@ static inline int constant_fls(unsigned int x)
x <<= 2;
r -= 2;
}
- if (!(x & 0x80000000u)) {
- x <<= 1;
+ if (!(x & 0x80000000u))
r -= 1;
- }
return r;
}

--
2.7.4