arm: Remove __builtin_arm_uqsub8 usage on string-fza.h
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Patch applied to master at the time it was sent
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dj/TryBot-32bit |
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Build for i686
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Commit Message
The __builtin_arm_uqsub8 is an internal GCC builtin which might change
in future release (the correct way is to include "arm_acle.h" and use
__uqsub8 ()). Since not all compilers support it, just use the
inline assembler instead.
Checked on armv7a-linux-gnueabihf.
---
sysdeps/arm/armv6t2/string-fza.h | 4 ----
1 file changed, 4 deletions(-)
Comments
Hi Adhemerval,
> The __builtin_arm_uqsub8 is an internal GCC builtin which might change
> in future release (the correct way is to include "arm_acle.h" and use
> __uqsub8 ()). Since not all compilers support it, just use the
> inline assembler instead.
LGTM.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
@@ -33,13 +33,9 @@ find_zero_all (op_t x)
/* Use unsigned saturated subtraction from 1 in each byte.
That leaves 1 for every byte that was zero. */
op_t ones = repeat_bytes (0x01);
-#if __GNUC_PREREQ (10, 0)
- return __builtin_arm_uqsub8 (ones, x);
-#else
op_t ret;
asm ("uqsub8 %0,%1,%2" : "=r"(ret) : "r"(ones), "r"(x));
return ret;
-#endif
}
OK
@@ -33,13 +33,9 @@ find_zero_all (op_t x)
/* Use unsigned saturated subtraction from 1 in each byte.
That leaves 1 for every byte that was zero. */
op_t ones = repeat_bytes (0x01);
-#if __GNUC_PREREQ (10, 0)
- return __builtin_arm_uqsub8 (ones, x);
-#else
op_t ret;
asm ("uqsub8 %0,%1,%2" : "=r"(ret) : "r"(ones), "r"(x));
return ret;
-#endif
}
/* Identify bytes that are equal between X1 and X2. */