diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6b8dc6467ec37d63e6e276f2ed2c0beb36f4ae91..76a2bd2b8e9fa7fc8e39cd269983f09612e07448 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-03-04 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> + + * config/s390/s390.c (s390_decompose_address): Reject non-literal + pool references in UNSPEC_LTREL_OFFSET. + 2011-03-04 Jan Hubicka <jh@suse.cz> PR lto/47497 diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index f43b3765032b1c98161a06d9326e271554e336c8..3e6edb76b475e56eeb9fb5f489c4825f3d1b5584 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -2065,6 +2065,16 @@ s390_decompose_address (rtx addr, struct s390_address *out) else if (GET_CODE (disp) == UNSPEC && XINT (disp, 1) == UNSPEC_LTREL_OFFSET) { + /* In case CSE pulled a non literal pool reference out of + the pool we have to reject the address. This is + especially important when loading the GOT pointer on non + zarch CPUs. In this case the literal pool contains an lt + relative offset to the _GLOBAL_OFFSET_TABLE_ label which + will most likely exceed the displacement. */ + if (GET_CODE (XVECEXP (disp, 0, 0)) != SYMBOL_REF + || !CONSTANT_POOL_ADDRESS_P (XVECEXP (disp, 0, 0))) + return false; + orig_disp = gen_rtx_CONST (Pmode, disp); if (offset) {