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[PATCH, i386]: Tighten constraints of FPmode splitters a bit.

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Sat, 4 Sep 2010 11:49:58 +0200
Subject: [PATCH, i386]: Tighten constraints of FPmode splitters a bit.

Hello!

XFmode can be moved directly from stack regs only and TFmode can be
moved directly from SSE regs only.

2010-09-04  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/predicates.md (sse_reg_operand): New predicate.
	* config/i386/i386.md (TFmode push splitter): Use sse_reg_operand
	predicate for operand 1.
	(XFmode push splitter): Use fp_register_operand predicate
	for operand 1.
	(*dummy_extendsfdf2, *dummy_extendsfxf2): Remove disabled patterns.
	(SF-DF float_extend push splitter): Add reload_completed insn
	predicate.
	({SF,DF}-XF float_extend_push splitter): Macroize splitter using
	MODEF mode macro.  Add reload_completed insn predicate.

Tested on x86_64-pc-linux-gnu {,-m32}, committed to mainline SVN.

Uros.

Attachment: p.diff.txt
Description: Text document

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