[GCC ARM-Embedded-4_7/Commit]Fix size regression of regrename on Thumb2

["Bin Cheng" <bin dot cheng at arm dot com>]

Hi,
I committed the patch fixing size regression of regrename on Thumb2 to ARM
Embedded-4_7 branch as r193980.

Thanks.

gcc/ChangeLog.arm
2012-11-30  Bin Cheng  <bin.cheng@arm.com>

	* config/arm/arm-protos.h (tune_params): Add
	preferred_renaming_class.
	* config/arm/arm.c (arm_slowmul_tune, arm_fastmul_tune)
	(arm_strongarm_tune, arm_xscale_tune, arm_9e_tune, arm_v6t2_tune)
	(arm_cortex_tune, arm_cortex_a5_tune, arm_cortex_a9_tune)
	(arm_cortex_v7m_tune, arm_cortex_v6m_tune, arm_fa726te_tune): Set
	preferred_renaming_class field.
	(arm_preferred_rename_class): Return preferred renaming register
	class.
	* config/arm/arm.md (*arm_addsi3, *arm_subsi3_insn, *arm_mulsi3_v6)
	(*arm_andsi3_insn, andsi_notsi_si, *iorsi3_insn, *arm_xorsi3)
	(*arm_shiftsi3): Add alternatives for Thumb2 set.
	* regrename.c (find_best_rename_reg): Don't rename preferred
	register to non-preferred register.

Attachment: r193980.txt
Description: Text document