| blob | 2e20ef67b2a2da699450e740c24b2e3b9cd4c50a |
1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
4 ; https://bugs.llvm.org/show_bug.cgi?id=37104
6 ; X: [byte3] [byte0]
7 ; Y: [byte2][byte1]
9 define i8 @out8_constmask(i8 %x, i8 %y) {
10 ; CHECK-LABEL: out8_constmask:
11 ; CHECK: // %bb.0:
12 ; CHECK-NEXT: lsr w8, w0, #2
13 ; CHECK-NEXT: bfi w1, w8, #2, #4
14 ; CHECK-NEXT: mov w0, w1
15 ; CHECK-NEXT: ret
16 %mx = and i8 %x, 60
17 %my = and i8 %y, -61
18 %r = or i8 %mx, %my
19 ret i8 %r
20 }
22 define i16 @out16_constmask(i16 %x, i16 %y) {
23 ; CHECK-LABEL: out16_constmask:
24 ; CHECK: // %bb.0:
25 ; CHECK-NEXT: lsr w8, w0, #4
26 ; CHECK-NEXT: bfi w1, w8, #4, #8
27 ; CHECK-NEXT: mov w0, w1
28 ; CHECK-NEXT: ret
29 %mx = and i16 %x, 4080
30 %my = and i16 %y, -4081
31 %r = or i16 %mx, %my
32 ret i16 %r
33 }
35 define i32 @out32_constmask(i32 %x, i32 %y) {
36 ; CHECK-LABEL: out32_constmask:
37 ; CHECK: // %bb.0:
38 ; CHECK-NEXT: lsr w8, w0, #8
39 ; CHECK-NEXT: bfi w1, w8, #8, #16
40 ; CHECK-NEXT: mov w0, w1
41 ; CHECK-NEXT: ret
42 %mx = and i32 %x, 16776960
43 %my = and i32 %y, -16776961
44 %r = or i32 %mx, %my
45 ret i32 %r
46 }
48 define i64 @out64_constmask(i64 %x, i64 %y) {
49 ; CHECK-LABEL: out64_constmask:
50 ; CHECK: // %bb.0:
51 ; CHECK-NEXT: lsr x8, x0, #16
52 ; CHECK-NEXT: bfi x1, x8, #16, #32
53 ; CHECK-NEXT: mov x0, x1
54 ; CHECK-NEXT: ret
55 %mx = and i64 %x, 281474976645120
56 %my = and i64 %y, -281474976645121
57 %r = or i64 %mx, %my
58 ret i64 %r
59 }
61 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
62 ; Should be the same as the previous one.
63 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
65 define i8 @in8_constmask(i8 %x, i8 %y) {
66 ; CHECK-LABEL: in8_constmask:
67 ; CHECK: // %bb.0:
68 ; CHECK-NEXT: eor w8, w0, w1
69 ; CHECK-NEXT: and w8, w8, #0x3c
70 ; CHECK-NEXT: eor w0, w8, w1
71 ; CHECK-NEXT: ret
72 %n0 = xor i8 %x, %y
73 %n1 = and i8 %n0, 60
74 %r = xor i8 %n1, %y
75 ret i8 %r
76 }
78 define i16 @in16_constmask(i16 %x, i16 %y) {
79 ; CHECK-LABEL: in16_constmask:
80 ; CHECK: // %bb.0:
81 ; CHECK-NEXT: eor w8, w0, w1
82 ; CHECK-NEXT: and w8, w8, #0xff0
83 ; CHECK-NEXT: eor w0, w8, w1
84 ; CHECK-NEXT: ret
85 %n0 = xor i16 %x, %y
86 %n1 = and i16 %n0, 4080
87 %r = xor i16 %n1, %y
88 ret i16 %r
89 }
91 define i32 @in32_constmask(i32 %x, i32 %y) {
92 ; CHECK-LABEL: in32_constmask:
93 ; CHECK: // %bb.0:
94 ; CHECK-NEXT: eor w8, w0, w1
95 ; CHECK-NEXT: and w8, w8, #0xffff00
96 ; CHECK-NEXT: eor w0, w8, w1
97 ; CHECK-NEXT: ret
98 %n0 = xor i32 %x, %y
99 %n1 = and i32 %n0, 16776960
100 %r = xor i32 %n1, %y
101 ret i32 %r
102 }
104 define i64 @in64_constmask(i64 %x, i64 %y) {
105 ; CHECK-LABEL: in64_constmask:
106 ; CHECK: // %bb.0:
107 ; CHECK-NEXT: eor x8, x0, x1
108 ; CHECK-NEXT: and x8, x8, #0xffffffff0000
109 ; CHECK-NEXT: eor x0, x8, x1
110 ; CHECK-NEXT: ret
111 %n0 = xor i64 %x, %y
112 %n1 = and i64 %n0, 281474976645120
113 %r = xor i64 %n1, %y
114 ret i64 %r
115 }
117 ; ============================================================================ ;
118 ; Constant Commutativity tests.
119 ; ============================================================================ ;
121 define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
122 ; CHECK-LABEL: in_constmask_commutativity_0_1:
123 ; CHECK: // %bb.0:
124 ; CHECK-NEXT: eor w8, w0, w1
125 ; CHECK-NEXT: and w8, w8, #0xffff00
126 ; CHECK-NEXT: eor w0, w1, w8
127 ; CHECK-NEXT: ret
128 %n0 = xor i32 %x, %y
129 %n1 = and i32 %n0, 16776960
130 %r = xor i32 %y, %n1 ; swapped
131 ret i32 %r
132 }
134 define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
135 ; CHECK-LABEL: in_constmask_commutativity_1_0:
136 ; CHECK: // %bb.0:
137 ; CHECK-NEXT: eor w8, w0, w1
138 ; CHECK-NEXT: and w8, w8, #0xffff00
139 ; CHECK-NEXT: eor w0, w8, w0
140 ; CHECK-NEXT: ret
141 %n0 = xor i32 %x, %y
142 %n1 = and i32 %n0, 16776960
143 %r = xor i32 %n1, %x ; %x instead of %y
144 ret i32 %r
145 }
147 define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
148 ; CHECK-LABEL: in_constmask_commutativity_1_1:
149 ; CHECK: // %bb.0:
150 ; CHECK-NEXT: eor w8, w0, w1
151 ; CHECK-NEXT: and w8, w8, #0xffff00
152 ; CHECK-NEXT: eor w0, w0, w8
153 ; CHECK-NEXT: ret
154 %n0 = xor i32 %x, %y
155 %n1 = and i32 %n0, 16776960
156 %r = xor i32 %x, %n1 ; swapped, %x instead of %y
157 ret i32 %r
158 }
160 ; ============================================================================ ;
161 ; Y is an 'and' too.
162 ; ============================================================================ ;
164 define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
165 ; CHECK-LABEL: in_complex_y0_constmask:
166 ; CHECK: // %bb.0:
167 ; CHECK-NEXT: and w8, w1, w2
168 ; CHECK-NEXT: eor w9, w0, w8
169 ; CHECK-NEXT: and w9, w9, #0xffff00
170 ; CHECK-NEXT: eor w0, w9, w8
171 ; CHECK-NEXT: ret
172 %y = and i32 %y_hi, %y_low
173 %n0 = xor i32 %x, %y
174 %n1 = and i32 %n0, 16776960
175 %r = xor i32 %n1, %y
176 ret i32 %r
177 }
179 define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
180 ; CHECK-LABEL: in_complex_y1_constmask:
181 ; CHECK: // %bb.0:
182 ; CHECK-NEXT: and w8, w1, w2
183 ; CHECK-NEXT: eor w9, w0, w8
184 ; CHECK-NEXT: and w9, w9, #0xffff00
185 ; CHECK-NEXT: eor w0, w8, w9
186 ; CHECK-NEXT: ret
187 %y = and i32 %y_hi, %y_low
188 %n0 = xor i32 %x, %y
189 %n1 = and i32 %n0, 16776960
190 %r = xor i32 %y, %n1
191 ret i32 %r
192 }
194 ; ============================================================================ ;
195 ; Negative tests. Should not be folded.
196 ; ============================================================================ ;
198 ; Multi-use tests.
200 declare void @use32(i32) nounwind
202 define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
203 ; CHECK-LABEL: in_multiuse_A_constmask:
204 ; CHECK: // %bb.0:
205 ; CHECK-NEXT: str x30, [sp, #-32]! // 8-byte Folded Spill
206 ; CHECK-NEXT: eor w8, w0, w1
207 ; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
208 ; CHECK-NEXT: and w20, w8, #0xffff00
209 ; CHECK-NEXT: mov w0, w20
210 ; CHECK-NEXT: mov w19, w1
211 ; CHECK-NEXT: bl use32
212 ; CHECK-NEXT: eor w0, w20, w19
213 ; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
214 ; CHECK-NEXT: ldr x30, [sp], #32 // 8-byte Folded Reload
215 ; CHECK-NEXT: ret
216 %n0 = xor i32 %x, %y
217 %n1 = and i32 %n0, 16776960
218 call void @use32(i32 %n1)
219 %r = xor i32 %n1, %y
220 ret i32 %r
221 }
223 define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
224 ; CHECK-LABEL: in_multiuse_B_constmask:
225 ; CHECK: // %bb.0:
226 ; CHECK-NEXT: str x30, [sp, #-32]! // 8-byte Folded Spill
227 ; CHECK-NEXT: eor w0, w0, w1
228 ; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
229 ; CHECK-NEXT: mov w19, w1
230 ; CHECK-NEXT: and w20, w0, #0xffff00
231 ; CHECK-NEXT: bl use32
232 ; CHECK-NEXT: eor w0, w20, w19
233 ; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
234 ; CHECK-NEXT: ldr x30, [sp], #32 // 8-byte Folded Reload
235 ; CHECK-NEXT: ret
236 %n0 = xor i32 %x, %y
237 %n1 = and i32 %n0, 16776960
238 call void @use32(i32 %n0)
239 %r = xor i32 %n1, %y
240 ret i32 %r
241 }
243 ; Various bad variants
245 define i32 @n0_badconstmask(i32 %x, i32 %y) {
246 ; CHECK-LABEL: n0_badconstmask:
247 ; CHECK: // %bb.0:
248 ; CHECK-NEXT: mov w9, #256
249 ; CHECK-NEXT: movk w9, #65280, lsl #16
250 ; CHECK-NEXT: and w8, w0, #0xffff00
251 ; CHECK-NEXT: and w9, w1, w9
252 ; CHECK-NEXT: orr w0, w8, w9
253 ; CHECK-NEXT: ret
254 %mx = and i32 %x, 16776960
255 %my = and i32 %y, -16776960 ; instead of -16776961
256 %r = or i32 %mx, %my
257 ret i32 %r
258 }
260 define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
261 ; CHECK-LABEL: n1_thirdvar_constmask:
262 ; CHECK: // %bb.0:
263 ; CHECK-NEXT: eor w8, w0, w1
264 ; CHECK-NEXT: and w8, w8, #0xffff00
265 ; CHECK-NEXT: eor w0, w8, w2
266 ; CHECK-NEXT: ret
267 %n0 = xor i32 %x, %y
268 %n1 = and i32 %n0, 16776960
269 %r = xor i32 %n1, %z ; instead of %y
270 ret i32 %r
271 }