gcc/testsuite/gcc.target/arm/scd42-1.c

   1 /* Verify that mov is preferred on XScale for loading a 1 byte constant. */
   2 /* { dg-do compile } */
   3 /* { dg-skip-if "Test is specific to Xscale" { arm*-*-* } { "-march=*" } { "-march=xscale" } } */
   4 /* { dg-skip-if "Test is specific to Xscale" { arm*-*-* } { "-mcpu=*" } { "-mcpu=xscale" } } */
   5 /* { dg-skip-if "do not override -mfloat-abi" { *-*-* } { "-mfloat-abi=*" } { "-mfloat-abi=softfp" } } */
   6 /* { dg-require-effective-target arm_arch_v5te_ok } */
   7 /* { dg-options "-mcpu=xscale -O -mfloat-abi=softfp" } */
   8
   9 unsigned load1(void) __attribute__ ((naked));
  10 unsigned load1(void)
  11 {
  12     /* Best code would be:
  13        mov r0, =17
  14        mov pc, lr */
  15
  16     return 17;
  17 }
  18
  19 /* { dg-final { scan-assembler "mov\[   ].*17" { target { arm_nothumb } } } } */
  20 /* { dg-final { scan-assembler "movs\[  ].*17" { target { ! arm_nothumb } } } } */