gcc/testsuite/gcc.target/arm/pure-code/no-literal-pool-m0.c

   1 /* { dg-do compile } */
   2 /* { dg-skip-if "skip override" { *-*-* } { "-mfloat-abi=hard" } { "" } } */
   3 /* { dg-options "-mpure-code -mcpu=cortex-m0 -march=armv6s-m -mthumb -mfloat-abi=soft" } */
   4 /* { dg-final { check-function-bodies "**" "" } } */
   5
   6 /* Does not use thumb1_gen_const_int.
   7 ** test_0:
   8 **      ...
   9 **      movs    r[0-3], #0
  10 **      ...
  11 */
  12 int
  13 test_0 ()
  14 {
  15   return 0;
  16 }
  17
  18 /* Does not use thumb1_gen_const_int.
  19 ** test_128:
  20 **      ...
  21 **      movs    r[0-3], #128
  22 **      ...
  23 */
  24 int
  25 test_128 ()
  26 {
  27   return 128;
  28 }
  29
  30 /* Does not use thumb1_gen_const_int.
  31 ** test_264:
  32 **      ...
  33 **      movs    r[0-3], #132
  34 **      lsls    r[0-3], r[0-3], #1
  35 **      ...
  36 */
  37 int
  38 test_264 ()
  39 {
  40   return 264;
  41 }
  42
  43 /* Does not use thumb1_gen_const_int.
  44 ** test_510:
  45 **      ...
  46 **      movs    r[0-3], #255
  47 **      lsls    r[0-3], r[0-3], #1
  48 **      ...
  49 */
  50 int
  51 test_510 ()
  52 {
  53   return 510;
  54 }
  55
  56 /* Does not use thumb1_gen_const_int.
  57 ** test_512:
  58 **      ...
  59 **      movs    r[0-3], #128
  60 **      lsls    r[0-3], r[0-3], #2
  61 **      ...
  62 */
  63 int
  64 test_512 ()
  65 {
  66   return 512;
  67 }
  68
  69 /* Does not use thumb1_gen_const_int.
  70 ** test_764:
  71 **      ...
  72 **      movs    r[0-3], #191
  73 **      lsls    r[0-3], r[0-3], #2
  74 **      ...
  75 */
  76 int
  77 test_764 ()
  78 {
  79   return 764;
  80 }
  81
  82 /* Does not use thumb1_gen_const_int.
  83 ** test_65536:
  84 **      ...
  85 **      movs    r[0-3], #128
  86 **      lsls    r[0-3], r[0-3], #9
  87 **      ...
  88 */
  89 int
  90 test_65536 ()
  91 {
  92   return 65536;
  93 }
  94
  95 /*
  96 ** test_0x123456:
  97 **      ...
  98 **      movs    r[0-3], #18
  99 **      lsls    r[0-3], r[0-3], #8
 100 **      adds    r[0-3], r[0-3], #52
 101 **      lsls    r[0-3], r[0-3], #8
 102 **      adds    r[0-3], r[0-3], #86
 103 **      ...
 104 */
 105 int
 106 test_0x123456 ()
 107 {
 108   return 0x123456;
 109 }
 110
 111 /*
 112 ** test_0x1123456:
 113 **      ...
 114 **      movs    r[0-3], #137
 115 **      lsls    r[0-3], r[0-3], #8
 116 **      adds    r[0-3], r[0-3], #26
 117 **      lsls    r[0-3], r[0-3], #8
 118 **      adds    r[0-3], r[0-3], #43
 119 **      lsls    r[0-3], r[0-3], #1
 120 **      ...
 121 */
 122 int
 123 test_0x1123456 ()
 124 {
 125   return 0x1123456;
 126 }
 127
 128 /* With -Os, we generate:
 129    movs r0, #16
 130    lsls r0, r0, r0
 131    With the other optimization levels, we generate:
 132    movs r0, #16
 133    lsls r0, r0, #16
 134    hence the two alternatives.  */
 135 /*
 136 ** test_0x1000010:
 137 **      ...
 138 **      movs    r[0-3], #16
 139 **      lsls    r[0-3], r[0-3], (#16|r[0-3])
 140 **      adds    r[0-3], r[0-3], #1
 141 **      lsls    r[0-3], r[0-3], #4
 142 **      ...
 143 */
 144 int
 145 test_0x1000010 ()
 146 {
 147   return 0x1000010;
 148 }
 149
 150 /*
 151 ** test_0x1000011:
 152 **      ...
 153 **      movs    r[0-3], #1
 154 **      lsls    r[0-3], r[0-3], #24
 155 **      adds    r[0-3], r[0-3], #17
 156 **      ...
 157 */
 158 int
 159 test_0x1000011 ()
 160 {
 161   return 0x1000011;
 162 }
 163
 164 /*
 165 ** test_m8192:
 166 **      ...
 167 **      movs    r[0-3], #1
 168 **      lsls    r[0-3], r[0-3], #13
 169 **      rsbs    r[0-3], r[0-3], #0
 170 **      ...
 171 */
 172 int
 173 test_m8192 ()
 174 {
 175   return -8192;
 176 }