Lines Matching +full:ip +full:- +full:block
1 //===-- umodsi3.S - 32-bit unsigned integer modulus -----------------------===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file implements the __umodsi3 (32-bit unsigned integer modulus)
10 // function for the ARM 32-bit architecture.
12 //===----------------------------------------------------------------------===//
47 // At the time of JMP, ip := .Ldiv0block - 8 * I.
48 // This depends on the fixed instruction size of block.
51 // block(shift) implements the test-and-update-quotient core.
56 clz ip, r0
58 // r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3.
59 sub r3, r3, ip
61 adr ip, LOCAL_LABEL(div0block) + 1
62 sub ip, ip, r3, lsl #1
64 adr ip, LOCAL_LABEL(div0block)
66 sub ip, ip, r3, lsl #3
67 bx ip
73 adr ip, LOCAL_LABEL(div0block)
78 subhs ip, ip, #(16 * 8)
83 subhs ip, ip, #(8 * 8)
88 subhs ip, #(4 * 8)
93 subhs ip, ip, #(2 * 8)
95 // Last block, no need to update r2 or r3.
97 subls ip, ip, #(1 * 8)
99 JMP(ip)
104 #define block(shift) \ macro
109 block(31)
110 block(30)
111 block(29)
112 block(28)
113 block(27)
114 block(26)
115 block(25)
116 block(24)
117 block(23)
118 block(22)
119 block(21)
120 block(20)
121 block(19)
122 block(18)
123 block(17)
124 block(16)
125 block(15)
126 block(14)
127 block(13)
128 block(12)
129 block(11)
130 block(10)
131 block(9)
132 block(8)
133 block(7)
134 block(6)
135 block(5)
136 block(4)
137 block(3)
138 block(2)
139 block(1)
141 block(0)