http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52146
--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> 2012-02-10 17:28:54 UTC --- (In reply to comment #9) > HJ, Steffen, can you please test following patch instead: > > --cut here-- > Index: i386/i386.c > =================================================================== > --- i386/i386.c (revision 184096) > +++ i386/i386.c (working copy) > @@ -11932,6 +11932,13 @@ ix86_legitimate_address_p (enum machine_mode mode > rtx base, index, disp; > HOST_WIDE_INT scale; > > + /* Since constant address in x32 is signed extended to 64bit, > + we have to prevent addresses from 0x80000000 to 0xffffffff. */ > + if (TARGET_X32 > + && CONST_INT_P (addr) > + && val_signbit_known_set_p (SImode, INTVAL (addr))) > + return false; > + > if (ix86_decompose_address (addr, &parts) <= 0) > /* Decomposition failed. */ > return false; > --cut here-- It works.
