arm-scd42-2.c

来自「用于进行gcc测试」· C语言 代码 · 共 18 行

/* Verify that mov is preferred on XScale for loading a 2 byte constant. */
/* { dg-do compile } */
/* { dg-options "-mcpu=xscale -O" } */
/* { dg-require-effective-target arm32 } */

unsigned load2(void) __attribute__ ((naked));
unsigned load2(void)
{
    /* Best code would be:
       mov r0, =272
       add r0, r0, =1
       mov pc, lr */

    return 273;
}

/* { dg-final { scan-assembler "mov\[ 	].*272" } } */