* config/sparc/sparc.c (input_operand): Do not accept a LO_SUM MEM
for TFmode when !v9. We require offsettable memory addresses.
* config/sparc/sparc.h (ALTER_HARD_SUBREG): Handle TFmode to
DFmode register number conversions.
* config/sparc/sparc.md (define_split DFmode moves): If register
is a SUBREG do alter_subreg on it before using.
(define_expand movtf): Fixup comment about alignment on v9.
(define_split TFmode moves): Don't use gen_{high,low}part, create
explicit SUBREGs instead.
From-SVN: r21658
