of the destination isn't also a FP_REGS register.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@186178
138bc75d-0d04-0410-961f-
82ee72b054a4
+2012-04-06 Eric Botcazou <ebotcazou@adacore.com>
+
+ * config/ia64/ia64.c (ia64_load_pair_ok): Return 0 if the second member
+ of the destination isn't also a FP_REGS register.
+
2012-04-03 Richard Guenther <rguenther@suse.de>
Backport from mainline
int
ia64_load_pair_ok (rtx dst, rtx src)
{
- if (GET_CODE (dst) != REG || !FP_REGNO_P (REGNO (dst)))
+ /* ??? There is a thinko in the implementation of the "x" constraint and the
+ FP_REGS class. The constraint will also reject (reg f30:TI) so we must
+ also return false for it. */
+ if (GET_CODE (dst) != REG
+ || !(FP_REGNO_P (REGNO (dst)) && FP_REGNO_P (REGNO (dst) + 1)))
return 0;
if (GET_CODE (src) != MEM || MEM_VOLATILE_P (src))
return 0;