------- Comment #19 from matz at gcc dot gnu dot org 2007-09-27 14:52 ------- Have a patch on http://gcc.gnu.org/ml/gcc-patches/2007-09/msg01968.html . Fixes also the reload failure on x86 -O2 -fPIC on this testcase (which hits glibc):
/* { dg-do compile } */ /* { dg-options "-O2 -fPIC" } */ typedef unsigned int size_t; char * __mempcpy_by2 (char *__dest, __const char *__src, size_t __srclen) { register char *__tmp = __dest; register unsigned long int __d0, __d1; __asm__ __volatile__ ("shrl $1,%3\n\t" "jz 2f\n" "1:\n\t" "movl (%2),%0\n\t" "leal 4(%2),%2\n\t" "movl %0,(%1)\n\t" "leal 4(%1),%1\n\t" "decl %3\n\t" "jnz 1b\n" "2:\n\t" "movw (%2),%w0\n\t" "movw %w0,(%1)" : "=&q" (__d0), "=r" (__tmp), "=&r" (__src), "=&r" (__d1), "=m" ( *(struct { __extension__ char __x[__srclen]; } *)__dest) : "1" (__tmp), "2" (__src), "3" (__srclen / 2), "m" ( *(struct { __extension__ char __x[__srclen]; } *)__src) : "cc"); return __tmp + 2; } -- matz at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |matz at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33552