[PATCH ARM/Embedded-4_8-branch]disable rtl loop invariant when optimizing for size

[bin.cheng]

Hi,

The attached patch disables rtl loop invariant when optimizing for code
size.  Committed to ARM/Embedded-4_8-branch as r202067.

Thanks.
bin

2013-08-29  Zhenqiang Chen  <zhenqiang.chen@arm.com>

	* config/arm/arm.c (arm_option_override): Disable loop2_invariant
	pass when optimize_size and ira-loop-pressure is not enabled.

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