linux下编程用 编译软件

				/* PR 14204 */				/* { dg-do compile } */				/* { dg-options "-O -Wall -Werror" } */								#if defined __alpha__				# define ASM __asm__("$30")				#elif defined __i386__				# define ASM __asm__("esp")				#elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER)				# define ASM __asm__("r1")				#elif defined __s390__				# define ASM __asm__("r15")				#elif defined __mips				# define ASM __asm__("$sp")				#elif defined __sparc__				# define ASM __asm__("sp")				#elif defined __ia64__				# define ASM __asm__("r12")				#elif defined __hppa__				# define ASM __asm__("%r30")				#elif defined __xtensa__				# define ASM __asm__("sp")				#else				/* The register name should be target-dependent so for other targets,				   we just silence the test.  */				# define ASM = 0				#endif								void *load_PCB (void)				{				  register void *sp ASM;				  return sp;			/* { dg-bogus "uninitialized" } */				}