i386: Add minmax and abs patterns for 4-byte vectors [PR100637]

i386: Add minmax and abs patterns for 4-byte vectors [PR100637]

2021-05-21  Uroš Bizjak  <ubizjak@gmail.com>

gcc/
	PR target/100637
	* config/i386/mmx.md (SMAXMIN_MMXMODEI): New mode iterator.
	(<smaxmin:code><SMAXMIN_MMXMODEI:mode>3): Macroize expander
	from <smaxmin:code>v4hi3> and <smaxmin:code><MMXMODE14:mode>3
	using SMAXMIN_MMXMODEI mode iterator.
	(*<smaxmin:code>v4qi3): New insn pattern.
	(*<smaxmin:code>v2hi3): Ditto.
	(SMAXMIN_VI_32): New mode iterator.
	(<smaxmin:code><SMAXMIN_VI_32>mode3): New expander.

	(UMAXMIN_MMXMODEI): New mode iterator.
	(<umaxmin:code><UMAXMIN_MMXMODEI:mode>3): Macroize expander
	from <umaxmin:code>v8qi3> and <umaxmin:code><MMXMODE24:mode>3
	using UMAXMIN_MMXMODEI mode iterator.
	(*<umaxmin:code>v4qi3): New insn pattern.
	(*<umaxmin:code>v2hi3): Ditto.
	(UMAXMIN_VI_32): New mode iterator.
	(<umaxmin:code><UMAXMIN_VI_32>mode3): New expander.

	(abs<VI_32:mode>2): New insn pattern.
	(ssse3_abs<MMXMODEI:mode>2, abs<MMXMODEI:mode>2): Move from ...
	* config/i386/sse.md: ... here.