i386: Add V2SFmode conversion functions [PR95046]

i386: Add V2SFmode conversion functions [PR95046]

gcc/ChangeLog:

	PR target/95046
	* config/i386/mmx.md (mmx_fix_truncv2sfv2si2): rename from mmx_pf2id.
	Add SSE/AVX alternative.  Change operand predicates from
	nonimmediate_operand to register_mmxmem_operand.
	Enable instruction pattern for TARGET_MMX_WITH_SSE.
	(fix_truncv2sfv2si2): New expander.
	(fixuns_truncv2sfv2si2): Ditto.

	(mmx_floatv2siv2sf2): rename from mmx_floatv2si2.
	Add SSE/AVX alternative.  Change operand predicates from
	nonimmediate_operand to register_mmxmem_operand.
	Enable instruction pattern for TARGET_MMX_WITH_SSE.
	(floatv2siv2sf2): New expander.
	(floatunsv2siv2sf2): Ditto.

	* config/i386/i386-builtin.def (IX86_BUILTIN_PF2ID):
	Update for rename.
	(IX86_BUILTIN_PI2FD): Ditto.

testsuite/ChangeLog:

	PR target/95046
	* gcc.target/i386/pr95046-5.c: New test.