Fix set but unused variables.
2010-04-17 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com> * config/arm/arm.c (arm_gen_constant): Remove unused variable 'can_shift'. (arm_rtx_costs_1): Remove unused variable 'extra_cost'. (arm_unwind_emit_set): Use variable 'offset'. (thumb1_output_casesi): Remove unused variable 'flags'. From-SVN: r158460
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