[PATCH, i386]: Fix PR target/48723

[Uros Bizjak <ubizjak at gmail dot com>]

Hello!

Attached one-liner fixes PR target/48723, ICE in
ix86_expand_prologue() with -fstack-check + function returning struct,
on corei7-avx. The problem was, that we forgot to update accounting
info when ix86_adjust_stack_and_probe adjusted stack pointer (in this
particular case, m->fs.sp_offset was set by stack realignment code for
AVX 32byte stack alignment.

2011-04-22  Uros Bizjak  <ubizjak@gmail.com>

	PR target/48723
	* config/i386/i386.c (ix86_expand_prologue): Update m->fs.sp_offset
	after the call to ix86_adjust_stack_and_probe.

testsuite/ChangeLog:

2011-04-22  Uros Bizjak  <ubizjak@gmail.com>

	PR target/48723
	* gcc.target/i386/pr48723.c: New test.

Tested on x86_64-pc-linux-gnu {,-m32} AVX target.

Patch was committed to mainline and 4.6 branch.

Uros.

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