Lines Matching +full:clear +full:- +full:bit

2  * memchr - find a character in a memory zone
4  * Copyright (c) 2014-2022, Arm Limited.
5  * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
10  * ARMv8-a, AArch64
41  * For each 32-byte chunk we calculate a 64-bit syndrome value, with two bits
42  * per byte. For each tuple, bit 0 is set if the relevant byte matched the
43  * requested character and bit 1 is not used (faster than using a 32bit
59 	/* Work with aligned 32-byte chunks */
67 	 * Input string is not 32-byte aligned. We calculate the syndrome
79 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
80 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
82 	/* Clear the soff*2 lower bits */
109 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
110 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
112 	/* Only do the clear for the last possible block */
116 	/* Clear the (32 - ((cntrem + soff) % 32)) * 2 upper bits */
125 	/* Count the trailing zeros using bit reversing */
127 	/* Compensate the last post-increment */