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

[Chung-Lin Tang]

Hi,
this patch fixes the ICE in PR44557. It now occurs on trunk only under 
quite specific option conditions, but debugging this PR leaded to quite 
obvious Thumb-1 fixes.

Also added a simplified testcase, derived from the one on bugzilla. 
Tested without regressions, okay to commit to trunk?

Thanks,
Chung-Lin

2010-12-09  Chung-Lin Tang  <cltang@codesourcery.com>

	PR target/44557
	* config/arm/arm.h (PREFERRED_RELOAD_CLASS): Add CORE_REGS to
	Thumb-1 return LO_REGS case.
	* config/arm/arm.md (reload_inhi): Change scratch constraint
	from 'r' to 'l'.

	testsuite/
	* gcc.target/arm/pr44557.c: New.

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: pr44557.patch
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20101209/8ffa38da/attachment.ksh>