* function.c (init_function_start): Call decide_function_section.
	* varasm.c (decide_function_section): New function.
	(assemble_start_function): When not using
	flag_reorder_blocks_and_partition, don't compute in_cold_section_p
	or first_function_block_is_cold.
	* rtl.h (decide_function_section): Declare.

	* gcc.target/arm/cold-lc.c: New test.

From-SVN: r173303