(R5900) Implementing Vector Support

[Woon yung Liu]

I didn't know that, thanks.

I've re-done the instructions and expands, mostly based off the stuff that you shared earlier. Unfortunately, the test function wouldn't compile:


testv.c: In function 'testv8mult':
testv.c:87:1: error: unrecognizable insn:
}
^
(insn 7 4 8 2 (parallel [
  (set (reg:V8SI 201)
    (vec_select:V8SI (mult:V8SI (sign_extend:V8SI (reg/v:V8HI 198 [ v81 ]))
      (sign_extend:V8SI (reg/v:V8HI 199 [ v82 ])))
        (parallel [
          (const_int 0 [0])
          (const_int 1 [0x1])
          (const_int 4 [0x4])
          (const_int 5 [0x5])
          (const_int 2 [0x2])
          (const_int 3 [0x3])
          (const_int 6 [0x6])
          (const_int 7 [0x7])
        ])))
   (clobber (scratch:V4SI))
]) testv.c:86 -1
(nil))



On Tuesday, May 17, 2016 5:10 AM, Richard Henderson <rth@redhat.com> wrote:
The x constrant is for the hi/lo pair, whatever size it is.  You should be able 
to use that just fine with a 256 bit mode.