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[PATCH, i386]: Use SSE insns to generate soft-fp exceptions for 64bit targets only

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Thu, 11 Oct 2012 13:54:33 +0200
Subject: [PATCH, i386]: Use SSE insns to generate soft-fp exceptions for 64bit targets only

Hello!

For 32bit targets, there is no guarantee that mxcsr register will be
set up correctly w.r.t. unmasked FP exceptions, so don't use SSE
instructions to generate INVALID and DIVZERO FP exceptions.

2012-10-10  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/sfp-exceptions.c (__sfp_handle_exceptions): Emit SSE
	instructions for 64bit targets only.

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

Uros.

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