1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=avr -mcpu=avrtiny | FileCheck %s
; NOTE: Both %a(i8) and %b(i8) cost two registers.
define i8 @foo0(i8 %a, i8 %b) {
; CHECK-LABEL: foo0:
; CHECK: ; %bb.0:
; CHECK-NEXT: sub r24, r22
; CHECK-NEXT: ret
%c = sub i8 %a, %b
ret i8 %c
}
; NOTE: Both %a(i16) and %b(i16) cost two registers.
define i16 @foo1(i16 %a, i16 %b) {
; CHECK-LABEL: foo1:
; CHECK: ; %bb.0:
; CHECK-NEXT: sub r24, r22
; CHECK-NEXT: sbc r25, r23
; CHECK-NEXT: ret
%c = sub i16 %a, %b
ret i16 %c
}
; NOTE: %a(i16), %b(i16) and %c(i16) each costs two registers.
define i16 @foo2(i16 %a, i16 %b, i16 %c) {
; CHECK-LABEL: foo2:
; CHECK: ; %bb.0:
; CHECK-NEXT: sub r22, r24
; CHECK-NEXT: sbc r23, r25
; CHECK-NEXT: add r22, r20
; CHECK-NEXT: adc r23, r21
; CHECK-NEXT: mov r24, r22
; CHECK-NEXT: mov r25, r23
; CHECK-NEXT: ret
%d = sub i16 %a, %b
%e = sub i16 %c, %d
ret i16 %e
}
; NOTE: %a(i16), %b(i16) and %c(i16) each costs two registers,
; while %d(i16) is passed via the stack.
define i16 @foo3(i16 %a, i16 %b, i16 %c, i16 %d) {
; CHECK-LABEL: foo3:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: in r16, 63
; CHECK-NEXT: subi r28, 251
; CHECK-NEXT: sbci r29, 255
; CHECK-NEXT: ld r30, Y+
; CHECK-NEXT: ld r31, Y+
; CHECK-NEXT: subi r28, 2
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: subi r28, 5
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: out 63, r16
; CHECK-NEXT: sub r20, r30
; CHECK-NEXT: sbc r21, r31
; CHECK-NEXT: sub r24, r22
; CHECK-NEXT: sbc r25, r23
; CHECK-NEXT: add r24, r20
; CHECK-NEXT: adc r25, r21
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%e = sub i16 %a, %b
%g = sub i16 %c, %d
%h = add i16 %e, %g
ret i16 %h
}
; NOTE: %a(i32) costs four registers, while %b(i32) is passed via the stack.
define i32 @foo4(i32 %a, i32 %b) {
; CHECK-LABEL: foo4:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: in r16, 63
; CHECK-NEXT: subi r28, 251
; CHECK-NEXT: sbci r29, 255
; CHECK-NEXT: ld r20, Y+
; CHECK-NEXT: ld r21, Y+
; CHECK-NEXT: subi r28, 2
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: subi r28, 5
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: out 63, r16
; CHECK-NEXT: in r16, 63
; CHECK-NEXT: subi r28, 249
; CHECK-NEXT: sbci r29, 255
; CHECK-NEXT: ld r30, Y+
; CHECK-NEXT: ld r31, Y+
; CHECK-NEXT: subi r28, 2
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: subi r28, 7
; CHECK-NEXT: sbci r29, 0
; CHECK-NEXT: out 63, r16
; CHECK-NEXT: sub r20, r22
; CHECK-NEXT: sbc r21, r23
; CHECK-NEXT: sbc r30, r24
; CHECK-NEXT: sbc r31, r25
; CHECK-NEXT: mov r22, r20
; CHECK-NEXT: mov r23, r21
; CHECK-NEXT: mov r24, r30
; CHECK-NEXT: mov r25, r31
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%c = sub i32 %b, %a
ret i32 %c
}
; NOTE: %0 costs six registers, while %1 is passed via the stack.
define i8 @foo5([5 x i8] %0, i8 %1) {
; CHECK-LABEL: foo5:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 251
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r24, X
; CHECK-NEXT: add r24, r20
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%3 = extractvalue [5 x i8] %0, 0
%4 = add i8 %3, %1
ret i8 %4
}
; NOTE: %0 costs two registers and %1 costs four registers.
define i8 @foo6([2 x i8] %0, [4 x i8] %1) {
; CHECK-LABEL: foo6:
; CHECK: ; %bb.0:
; CHECK-NEXT: add r24, r20
; CHECK-NEXT: ret
%3 = extractvalue [2 x i8] %0, 0
%4 = extractvalue [4 x i8] %1, 0
%5 = add i8 %3, %4
ret i8 %5
}
; NOTE: %0 cost four registers, while %1 is passed via the stack,
; though there are two vacant registers.
define i8 @foo7([3 x i8] %0, [3 x i8] %1) {
; CHECK-LABEL: foo7:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 251
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r24, X
; CHECK-NEXT: add r24, r22
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%3 = extractvalue [3 x i8] %0, 0
%4 = extractvalue [3 x i8] %1, 0
%5 = add i8 %3, %4
ret i8 %5
}
; NOTE: %0 costs four registers, and %1 costs two registers, while %2 is
; passed via the stack, though there is one vacant register.
define i8 @foo8([3 x i8] %0, i8 %1, i8 %2) {
; CHECK-LABEL: foo8:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: add r22, r20
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 251
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r24, X
; CHECK-NEXT: sub r24, r22
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%4 = extractvalue [3 x i8] %0, 0
%5 = add i8 %4, %1
%6 = sub i8 %2, %5
ret i8 %6
}
; NOTE: %0 is passed via registers, though there are 6 vacant registers.
define i8 @foo9([7 x i8] %0) {
; CHECK-LABEL: foo9:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 250
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r25, X
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 251
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r24, X
; CHECK-NEXT: add r24, r25
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%2 = extractvalue [7 x i8] %0, 0
%3 = extractvalue [7 x i8] %0, 1
%4 = add i8 %2, %3
ret i8 %4
}
; NOTE: %0 costs six registers, while %1 and %2 are passed via the stack.
define i8 @fooa([6 x i8] %0, i8 %1, i8 %2) {
; CHECK-LABEL: fooa:
; CHECK: ; %bb.0:
; CHECK-NEXT: push r28
; CHECK-NEXT: push r29
; CHECK-NEXT: in r28, 61
; CHECK-NEXT: in r29, 62
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 251
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r25, X
; CHECK-NEXT: mov r26, r28
; CHECK-NEXT: mov r27, r29
; CHECK-NEXT: subi r26, 250
; CHECK-NEXT: sbci r27, 255
; CHECK-NEXT: ld r24, X
; CHECK-NEXT: sub r24, r25
; CHECK-NEXT: sub r24, r20
; CHECK-NEXT: pop r29
; CHECK-NEXT: pop r28
; CHECK-NEXT: ret
%4 = extractvalue [6 x i8] %0, 0
%5 = sub i8 %2, %1
%6 = sub i8 %5, %4
ret i8 %6
}
|