[PATCH, i386]: Merge push{xf,df}_integer, movdf_integer with corresponding base patterns

[Uros Bizjak <ubizjak at gmail dot com>]

Hello!

Attached patch introduces Yd and Yx conditional register constraints
to merge push{xf,df}_integer, movdf_integer with corresponding base
patterns.  Additionaly, the patch adds standard_sse_constant_p to
check for valid SSE constants in relevant patterns and
standard_sse_constant_opcode to output SSE insn.

2011-05-14  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/constraint.md (Yd, Yx): New register constraints.
	* config/i386/i386.md (*pushdf): Merge with *pushdf_nointeger.  Use
	Yd conditional register constraint.
	(*movtf_internal): Use standard_sse_constant_opcode.
	(*movxf_internal): Merge with *movxf_internal_nointeger.  Use
	Yx conditional register constraint.
	(*movdf_internal): Merge with *movdf_internal_nointeger.  Use
	Yd conditional register constraint.  Use standard_sse_constant_p to
	check for valid SSE constants and call standard_sse_constant_opcode to
	output SSE insn.
	(*movsf_internal): Use standard_sse_constant_p to check for valid SSE
	constants and call standard_sse_constant_opcode to output SSE insn.
	* config/i386/i386.c (ix86_option_ovverride_internal): Set
	TARGET_INTEGER_DFMODE_MOVES for 64bit targets.  Clear it when
	optimize_size is set.
	(standard_sse_constant_opcode): Output conditional AVX templates.

Patch was bootstrapped and regression tested on x86_64-pc-linux-gnu
{,-m32}. Patch was committed to SVN mainline.

Uros.

Attachment: p.diff.txt
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