test/MC/ARM/ldr-pseudo-darwin.s

   1 @ This test has a partner (ldr-pseudo.s) that contains matching
   2 @ tests for the ldr-pseudo on linux targets. We need separate files
   3 @ because the syntax for switching sections and temporary labels differs
   4 @ between darwin and linux. Any tests added here should have a matching
   5 @ test added there.
   6
   7 @RUN: llvm-mc -triple   armv7-base-apple-darwin %s | FileCheck --check-prefix=CHECK-ARM --check-prefix=CHECK %s
   8 @RUN: llvm-mc -triple   armv5-base-apple-darwin %s | FileCheck --check-prefix=CHECK-ARMV5 --check-prefix=CHECK %s
   9 @RUN: llvm-mc -triple thumbv5-base-apple-darwin %s | FileCheck --check-prefix=CHECK-THUMB --check-prefix=CHECK %s
  10 @RUN: llvm-mc -triple thumbv7-base-apple-darwin %s | FileCheck --check-prefix=CHECK-THUMB2 --check-prefix=CHECK %s
  11 @RUN: llvm-mc -triple thumbv8m.base-base-apple-darwin %s | FileCheck --check-prefix=CHECK-BASELINE --check-prefix=CHECK %s
  12 @
  13 @ Check that large constants are converted to ldr from constant pool
  14 @
  15 @ simple test
  16 .section __TEXT,b,regular,pure_instructions
  17 @ CHECK-LABEL: f3:
  18 f3:
  19   ldr r0, =0x10002
  20 @ CHECK: ldr r0, Ltmp0
  21
  22 @ loading multiple constants
  23 .section __TEXT,c,regular,pure_instructions
  24 @ CHECK-LABEL: f4:
  25 f4:
  26   ldr r0, =0x10003
  27 @ CHECK: ldr r0, Ltmp1
  28   adds r0, r0, #1
  29   adds r0, r0, #1
  30   adds r0, r0, #1
  31   adds r0, r0, #1
  32   ldr r0, =0x10004
  33 @ CHECK: ldr r0, Ltmp2
  34   adds r0, r0, #1
  35   adds r0, r0, #1
  36
  37 @ TODO: the same constants should have the same constant pool location
  38 .section __TEXT,d,regular,pure_instructions
  39 @ CHECK-LABEL: f5:
  40 f5:
  41   ldr r0, =0x10005
  42 @ CHECK: ldr r0, Ltmp3
  43   adds r0, r0, #1
  44   adds r0, r0, #1
  45   adds r0, r0, #1
  46   adds r0, r0, #1
  47   adds r0, r0, #1
  48   adds r0, r0, #1
  49   adds r0, r0, #1
  50   ldr r0, =0x10005
  51 @ CHECK: ldr r0, Ltmp3
  52   adds r0, r0, #1
  53   adds r0, r0, #1
  54   adds r0, r0, #1
  55   adds r0, r0, #1
  56   adds r0, r0, #1
  57   adds r0, r0, #1
  58
  59 @ a section defined in multiple pieces should be merged and use a single constant pool
  60 .section __TEXT,e,regular,pure_instructions
  61 @ CHECK-LABEL: f6:
  62 f6:
  63   ldr r0, =0x10006
  64 @ CHECK: ldr r0, Ltmp4
  65   adds r0, r0, #1
  66   adds r0, r0, #1
  67   adds r0, r0, #1
  68
  69 .section __TEXT,f,regular,pure_instructions
  70 @ CHECK-LABEL: f7:
  71 f7:
  72   adds r0, r0, #1
  73   adds r0, r0, #1
  74   adds r0, r0, #1
  75
  76 .section __TEXT,e,regular,pure_instructions
  77 @ CHECK-LABEL: f8:
  78 f8:
  79   adds r0, r0, #1
  80   ldr r0, =0x10007
  81 @ CHECK: ldr r0, Ltmp5
  82   adds r0, r0, #1
  83   adds r0, r0, #1
  84
  85 @
  86 @ Check that symbols can be loaded using ldr pseudo
  87 @
  88
  89 @ load an undefined symbol
  90 .section __TEXT,g,regular,pure_instructions
  91 @ CHECK-LABEL: f9:
  92 f9:
  93   ldr r0, =foo
  94 @ CHECK: ldr r0, Ltmp6
  95
  96 @ load a symbol from another section
  97 .section __TEXT,h,regular,pure_instructions
  98 @ CHECK-LABEL: f10:
  99 f10:
 100   ldr r0, =f5
 101 @ CHECK: ldr r0, Ltmp7
 102
 103 @ load a symbol from the same section
 104 .section __TEXT,i,regular,pure_instructions
 105 @ CHECK-LABEL: f11:
 106 f11:
 107   ldr r0, =f12
 108 @ CHECK: ldr r0, Ltmp8
 109
 110 @ CHECK-LABEL: f12:
 111 f12:
 112   adds r0, r0, #1
 113   adds r0, r0, #1
 114
 115 .section __TEXT,j,regular,pure_instructions
 116 @ mix of symbols and constants
 117 @ CHECK-LABEL: f13:
 118 f13:
 119   adds r0, r0, #1
 120   adds r0, r0, #1
 121   ldr r0, =0x10008
 122 @ CHECK: ldr r0, Ltmp9
 123   adds r0, r0, #1
 124   adds r0, r0, #1
 125   ldr r0, =bar
 126 @ CHECK: ldr r0, Ltmp10
 127   adds r0, r0, #1
 128   adds r0, r0, #1
 129 @
 130 @ Check for correct usage in other contexts
 131 @
 132
 133 @ usage in macro
 134 .macro useit_in_a_macro
 135   ldr r0, =0x10009
 136   ldr r0, =baz
 137 .endm
 138 .section __TEXT,k,regular,pure_instructions
 139 @ CHECK-LABEL: f14:
 140 f14:
 141   useit_in_a_macro
 142 @ CHECK: ldr r0, Ltmp11
 143 @ CHECK: ldr r0, Ltmp12
 144
 145 @ usage with expressions
 146 .section __TEXT,l,regular,pure_instructions
 147 @ CHECK-LABEL: f15:
 148 f15:
 149   ldr r0, =0x10001+9
 150 @ CHECK: ldr r0, Ltmp13
 151   adds r0, r0, #1
 152   ldr r0, =bar+4
 153 @ CHECK: ldr r0, Ltmp14
 154   adds r0, r0, #1
 155
 156 @ transformation to mov
 157 .section __TEXT,m,regular,pure_instructions
 158 @ CHECK-LABEL: f16:
 159 f16:
 160
 161 @ Representable in ARM, and Thumb with support mov.w or movw
 162   ldr r1, =0x1
 163 @ CHECK-ARM: mov r1, #1
 164 @ CHECK-ARMV5: mov r1, #1
 165 @ CHECK-THUMB: ldr r1, Ltmp15
 166 @ CHECK-THUMB2: mov.w r1, #1
 167 @ CHECK-BASELINE: movw r1, #1
 168
 169 @ Immediate is representable in A1 and T2 modified immediate only not movw
 170   ldr r2, =0x120000
 171 @ CHECK-ARM: mov r2, #1179648
 172 @ CHECK-ARMV5: mov r2, #1179648
 173 @ CHECK-THUMB: ldr r2, Ltmp16
 174 @ CHECK-THUMB2: mov.w r2, #1179648
 175 @ CHECK-BASELINE: ldr r2, Ltmp15
 176
 177 @ Immediate can be represented only with movw instruction
 178   ldr r3, =0x1234
 179 @ CHECK-ARM: movw r3, #4660
 180 @ CHECK-ARMV5: ldr r3, Ltmp15
 181 @ CHECK-THUMB: ldr r3, Ltmp17
 182 @ CHECK-THUMB2: movw r3, #4660
 183 @ CHECK-BASELINE: movw r3, #4660
 184
 185 @ Immediate can be represented only with T2 modified immediate
 186   ldr r4, =0xabababab
 187 @ CHECK-ARM: ldr r4, Ltmp15
 188 @ CHECK-ARMV5: ldr r4, Ltmp16
 189 @ CHECK-THUMB: ldr r4, Ltmp18
 190 @ CHECK-THUMB2: mov.w r4, #2880154539
 191 @ CHECK-BASELINE: ldr r4, Ltmp16
 192
 193 @ Immediate can be represented only with A1 modified immediate
 194   ldr r5, =0x1000000b
 195 @ CHECK-ARM: mov r5, #268435467
 196 @ CHECK-ARMV5: mov r5, #268435467
 197 @ CHECK-THUMB: ldr r5, Ltmp19
 198 @ CHECK-THUMB2: ldr r5, Ltmp15
 199 @ CHECK-BASELINE: ldr r5, Ltmp17
 200
 201 @ Negative numbers can be used with MVN or in Thumb2 with modified immediate
 202   ldr r6, =-1
 203 @ CHECK-ARM: mvn r6, #0
 204 @ CHECK-ARMV5: mvn r6, #0
 205 @ CHECK-THUMB: ldr r6, Ltmp20
 206 @ CHECK-THUMB2: mov.w r6, #-1
 207 @ CHECK-BASELINE: ldr r6, Ltmp18
 208   ldr r7, =-0x100
 209 @ CHECK-ARM: mvn r7, #255
 210 @ CHECK-ARMV5: mvn r7, #255
 211 @ CHECK-THUMB: ldr r7, Ltmp21
 212 @ CHECK-THUMB2: mvn r7, #255
 213 @ CHECK-BASELINE: ldr r7, Ltmp19
 214
 215 @ Constant expressions can be used
 216   .equ expr, 0x10 + 0x10
 217   ldr r0, = expr
 218 @ CHECK-ARM: mov r0, #32
 219 @ CHECK-ARMV5: mov r0, #32
 220 @ CHECK-THUMB: ldr r0, Ltmp22
 221 @ CHECK-THUMB2: mov.w r0, #32
 222 @ CHECK-BASELINE: movw r0, #32
 223   ldr r1, = expr - 0x10
 224 @ CHECK-ARM: mov r1, #16
 225 @ CHECK-ARMV5: mov r1, #16
 226 @ CHECK-THUMB: ldr r1, Ltmp23
 227 @ CHECK-THUMB2: mov.w r1, #16
 228 @ CHECK-BASELINE: movw r1, #16
 229
 230 @ usage of translation in macro
 231 .macro usemov_in_a_macro
 232   ldr r2, =0x3
 233   ldr r3, =expr
 234 .endm
 235 @ CHECK-LABEL: f17:
 236 f17:
 237   usemov_in_a_macro
 238 @ CHECK-ARM: mov r2, #3
 239 @ CHECK-ARM: mov r3, #32
 240 @ CHECK-ARMV5: mov r2, #3
 241 @ CHECK-ARMV5: mov r3, #32
 242 @ CHECK-THUMB: ldr r2, Ltmp24
 243 @ CHECK-THUMB: ldr r3, Ltmp22
 244 @ CHECK-THUMB2: mov.w r2, #3
 245 @ CHECK-THUMB2: mov.w r3, #32
 246 @ CHECK-BASELINE: movw r2, #3
 247 @ CHECK-BASELINE: movw r3, #32
 248 @
 249 @ Constant Pools
 250 @
 251 @ CHECK: .section __TEXT,b,regular,pure_instructions
 252 @ CHECK: .data_region
 253 @ CHECK: .p2align 2
 254 @ CHECK-LABEL: Ltmp0:
 255 @ CHECK: .long 65538
 256 @ CHECK: .end_data_region
 257
 258 @ CHECK: .section __TEXT,c,regular,pure_instructions
 259 @ CHECK: .data_region
 260 @ CHECK: .p2align 2
 261 @ CHECK-LABEL: Ltmp1:
 262 @ CHECK: .long 65539
 263 @ CHECK: .p2align 2
 264 @ CHECK-LABEL: Ltmp2:
 265 @ CHECK: .long 65540
 266 @ CHECK: .end_data_region
 267
 268 @ CHECK: .section __TEXT,d,regular,pure_instructions
 269 @ CHECK: .data_region
 270 @ CHECK: .p2align 2
 271 @ CHECK-LABEL: Ltmp3:
 272 @ CHECK: .long 65541
 273 @ CHECK: .end_data_region
 274
 275 @ CHECK: .section __TEXT,e,regular,pure_instructions
 276 @ CHECK: .data_region
 277 @ CHECK: .p2align 2
 278 @ CHECK-LABEL: Ltmp4:
 279 @ CHECK: .long 65542
 280 @ CHECK: .p2align 2
 281 @ CHECK-LABEL: Ltmp5:
 282 @ CHECK: .long 65543
 283 @ CHECK: .end_data_region
 284
 285 @ Should not switch to section because it has no constant pool
 286 @ CHECK-NOT: .section __TEXT,f,regular,pure_instructions
 287
 288 @ CHECK: .section __TEXT,g,regular,pure_instructions
 289 @ CHECK: .data_region
 290 @ CHECK: .p2align 2
 291 @ CHECK-LABEL: Ltmp6:
 292 @ CHECK: .long foo
 293 @ CHECK: .end_data_region
 294
 295 @ CHECK: .section __TEXT,h,regular,pure_instructions
 296 @ CHECK: .data_region
 297 @ CHECK: .p2align 2
 298 @ CHECK-LABEL: Ltmp7:
 299 @ CHECK: .long f5
 300 @ CHECK: .end_data_region
 301
 302 @ CHECK: .section __TEXT,i,regular,pure_instructions
 303 @ CHECK: .data_region
 304 @ CHECK: .p2align 2
 305 @ CHECK-LABEL: Ltmp8:
 306 @ CHECK: .long f12
 307 @ CHECK: .end_data_region
 308
 309 @ CHECK: .section __TEXT,j,regular,pure_instructions
 310 @ CHECK: .data_region
 311 @ CHECK: .p2align 2
 312 @ CHECK-LABEL: Ltmp9:
 313 @ CHECK: .long 65544
 314 @ CHECK: .p2align 2
 315 @ CHECK-LABEL: Ltmp10:
 316 @ CHECK: .long bar
 317 @ CHECK: .end_data_region
 318
 319 @ CHECK: .section __TEXT,k,regular,pure_instructions
 320 @ CHECK: .data_region
 321 @ CHECK: .p2align 2
 322 @ CHECK-LABEL: Ltmp11:
 323 @ CHECK: .long 65545
 324 @ CHECK: .p2align 2
 325 @ CHECK-LABEL: Ltmp12:
 326 @ CHECK: .long baz
 327 @ CHECK: .end_data_region
 328
 329 @ CHECK: .section __TEXT,l,regular,pure_instructions
 330 @ CHECK: .data_region
 331 @ CHECK: .p2align 2
 332 @ CHECK-LABEL: Ltmp13:
 333 @ CHECK: .long 65546
 334 @ CHECK: .p2align 2
 335 @ CHECK-LABEL: Ltmp14:
 336 @ CHECK: .long bar+4
 337 @ CHECK: .end_data_region