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MIPS: Octeon: Define ARCH_HAS_USABLE_BUILTIN_POPCOUNT for OCTEON.

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OCTEON implements __builtin_popcount with a single instruction, so lets use it.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/1431/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2010-06-25 16:46:08 -07:00 committed by Ralf Baechle
parent 1a403d1d2e
commit 1d1929c766
1 changed files with 8 additions and 0 deletions
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8
arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h
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@ -77,6 +77,14 @@ static inline int read_current_timer(unsigned long *result)
return 0;
}
#ifdef __OCTEON__
/*
* All gcc versions that have OCTEON support define __OCTEON__ and have the
* __builtin_popcount support.
*/
#define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1
#endif
static inline int octeon_has_saa(void)
{
int id;