[PATCH/AARCH64] Fix PR 61345: rtx_cost ICEing on simple code

[Andrew Pinski <andrew dot pinski at caviumnetworks dot com>]

Hi,
  The problem here is aarch64_rtx_costs for IF_THEN_ELSE does not
handle the case where the first operand is a non comparison.  This
happens when the combine is combing a few RTLs and calling
set_src_cost to check the costs of the newly created rtl.

At the same I noticed the code for rtx_costs was getting more complex
so I factored out the code for IF_THEN_ELSE

OK?  Built and tested on aarch64-elf with no regressions.

Thanks,
Andrew Pinski

ChangeLog:
* config/aarch64/aarch64.c (aarch64_if_then_else_costs): New function.
(aarch64_rtx_costs): Use aarch64_if_then_else_costs.

testsuite/ChangeLog:
* gcc.c-torture/compile/20140528-1.c: New testcase.

Attachment: fixkernel.diff.txt
Description: Text document