Re: moving v16sf reg with multiple sub-regs

[Dylan Cuthbert]

I tried simplify_gen_subreg but it crashes with a compiler error.  Maybe 
because V4SF isn't really thought of as a subreg of a V16SF at the moment? 
I am using gcc 3.3.3 right now so it might be just that it works in a later 
version of the compiler?

"Richard Sandiford" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
"Dylan Cuthbert" <[EMAIL PROTECTED]> writes:
   emit_move_insn( gen_rtx_SUBREG (V4SFmode, op0, 0  ), gen_rtx_MEM(
V4SFmode, src_reg ) );
   emit_move_insn( gen_rtx_SUBREG (V4SFmode, op0, 16 ), gen_rtx_MEM(
V4SFmode, plus_constant( src_reg, 16 ) ) );
   emit_move_insn( gen_rtx_SUBREG (V4SFmode, op0, 32 ), gen_rtx_MEM(
V4SFmode, plus_constant( src_reg, 32 ) ) );
   emit_move_insn( gen_rtx_SUBREG (V4SFmode, op0, 48 ), gen_rtx_MEM(
V4SFmode, plus_constant( src_reg, 48 ) ) );
Note that generating MEMs like this is a bad idea because it discards
alias information.  It's better to use functions like adjust_address
instead.
It's probably also better to use simplify_gen_subreg instead of
gen_rtx_SUBREG.
Richard