re PR rtl-optimization/63210 (ira does not select the best register compared with gcc 4.8 for ARM THUMB1)

ChangeLog:
2014-09-24  Zhenqiang Chen  <zhenqiang.chen@arm.com>

	PR rtl-optimization/63210
	* ira-color.c (assign_hard_reg): Ignore conflict cost if the
	HARD_REGNO is not availabe for CONFLICT_A.

testsuite/ChangeLog:
2014-09-24  Zhenqiang Chen  <zhenqiang.chen@arm.com>

	* gcc.target/arm/pr63210.c: New test.

From-SVN: r215540