i386.h has
#define VALID_SSE2_REG_MODE(MODE) \
((MODE) == V16QImode || (MODE) == V8HImode || (MODE) == V2DFmode \
|| (MODE) == V2DImode || (MODE) == DFmode)
#define VALID_SSE_REG_MODE(MODE) \
((MODE) == TImode || (MODE) == V4SFmode || (MODE) == V4SImode \
|| (MODE) == SFmode || (MODE) == TFmode)
That is V16QImode, V8HImode, V2DFmode and V2DImode are only available
for SSE2 or above. However, there are many things like:
(define_insn "*vec_concatv2df"
[(set (match_operand:V2DF 0 "register_operand" "=Y2,Y2,Y2,x,x")
(vec_concat:V2DF
(match_operand:DF 1 "nonimmediate_operand" " 0 ,0 ,m ,0,0")
(match_operand:DF 2 "vector_move_operand" " Y2,m ,C ,x,m")))]
"TARGET_SSE"
"@
unpcklpd\t{%2, %0|%0, %2}
movhpd\t{%2, %0|%0, %2}
movsd\t{%1, %0|%0, %1}
movlhps\t{%2, %0|%0, %2}
movhps\t{%2, %0|%0, %2}"
[(set_attr "type" "sselog,ssemov,ssemov,ssemov,ssemov")
(set_attr "mode" "V2DF,V1DF,DF,V4SF,V2SF")])
(define_insn "*vec_dupv2di"
[(set (match_operand:V2DI 0 "register_operand" "=Y2,x")
(vec_duplicate:V2DI
(match_operand:DI 1 "register_operand" " 0 ,0")))]
"TARGET_SSE"
"@
punpcklqdq\t%0, %0
movlhps\t%0, %0"
[(set_attr "type" "sselog1,ssemov")
(set_attr "mode" "TI,V4SF")])
if (TARGET_SSE2 && mode == V2DFmode)
...
case V8HImode:
if (TARGET_SSE2)
Do we really need to check TARGET_SSE2 on modes which are enabled
only for SSE2? If they are just oversights, I will try to fix them.
Thanks.
H.J.
