[PATCH, ARM] Fix PR44557 (Thumb-1 ICE)

[Chung-Lin Tang <cltang at codesourcery dot com>]

There was a patch of mine here from over an year ago:
http://gcc.gnu.org/ml/gcc-patches/2011-01/msg01846.html

That old patch contained a constraint modification that was a point of
discussion at the time, but upon re-testing I found it was unneeded for
fixing the PR (don't remember why I included it)

Resubmitting the patch adapted, basically a single-liner adding
CORE_REGS to the preferred reload class under Thumb-1. Cross-tested
with no regressions under "-march=armv5te -mthumb". Okay for trunk?

Thanks,
Chung-Lin

2012-09-26  Chung-Lin Tang  <cltang@codesourcery.com>

	PR target/44557
	* config/arm/arm.c (arm_preferred_reload_class): Add CORE_REGS
	to Thumb-1 case.

	testsuite/
	PR target/44557
	* gcc.target/arm/pr44557.c: New test.

Attachment: pr44557.diff
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