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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [20020312-2.c] - Rev 856
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/* PR 5878. We ICEd in verify_local_live_at_start because we incorrectly forced the PIC register live between BAR and BAZ. We did this because the definition of PIC_OFFSET_TABLE_REGNUM was incorrectly not INVALID_REGNUM when !flag_pic for most targets. */ /* { dg-do run } */ /* { dg-options "-O -fno-pic" } */ extern void abort (void); #if defined(__alpha__) /* PIC register is $29, but is used even without -fpic. */ #elif defined(__arc__) # define PIC_REG "26" #elif defined(__arm__) # define PIC_REG "9" #elif defined(AVR) /* No pic register. */ #elif defined(__cris__) # define PIC_REG "0" #elif defined(__fr30__) /* No pic register. */ #elif defined(__H8300__) || defined(__H8300H__) || defined(__H8300S__) /* No pic register. */ #elif defined(_IBMR2) /* No pic register. */ #elif defined(__i386__) # define PIC_REG "ebx" #elif defined(__ia64__) /* PIC register is r1, but is used even without -fpic. */ #elif defined(__M32R__) /* No pic register. */ #elif defined(__m68k__) # define PIC_REG "a5" #elif defined(__mc68hc1x__) /* No pic register. */ #elif defined(__mcore__) /* No pic register. */ #elif defined(__mips__) /* PIC register is $28, but is used even without -fpic. */ #elif defined(__MMIX__) /* No pic register. */ #elif defined(__mn10300__) /* No pic register. */ #elif defined(__hppa__) /* PIC register is %r27 or %r19, but is used even without -fpic. */ #elif defined(__pdp11__) /* No pic register. */ #elif defined(__powerpc__) || defined(__PPC__) || defined(__POWERPC__) # ifdef __MACH__ # define PIC_REG "31" # else # define PIC_REG "30" # endif #elif defined(__s390__) # define PIC_REG "12" #elif defined(__sparc__) # define PIC_REG "l7" #elif defined(__v850) /* No pic register. */ #elif defined(__vax__) /* No pic register. */ #elif defined(__xstormy16__) /* No pic register. */ #elif defined(__XTENSA__) /* No pic register. */ #elif defined(__sh__) # define PIC_REG "r12" #elif defined(__x86_64__) /* No pic register. */ #elif defined(__m32c__) /* No pic register. */ #else # error "Modify the test for your target." #endif #if defined PIC_REG && !defined __PIC__ && !defined __pic__ register void *reg __asm__(PIC_REG); #else /* We really need a global register variable set to the PIC register to expose the bug. Oh well, let the test case not fail. */ static void *reg; #endif void * __attribute__((noinline)) dummy (void *x) { return x; } void f (void) { goto *dummy (&&bar); for (;;) { foo: reg = (void *) 1; if (!reg) goto baz; reg = &&foo; } bar: baz: reg = 0; } int main() { void *old_reg = reg; reg = (void *) 1; f (); /* Additionally test that the prologue/epilogue properly does *not* save and restore global registers. Not possible when the PIC register is in a register window, of course. On Darwin, you can't call library routines from non-PIC code. */ #if !defined (__sparc__) && !defined(__MACH__) if (reg) abort (); #endif reg = old_reg; return 0; }
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