[Ada] Disable selected optimizations done in gigi at -Og

Eric Botcazou ebotcazou@adacore.com
Mon Sep 23 08:32:00 GMT 2019


This disables 3 optimizations done in gigi when the -Og switch is passed: the 
rotation of loops, the NRV optimization (Named Return Value) and the inlining 
of local finalizers.

Tested on x86_64-suse-linux, applied on the mainline.


2019-09-23  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/trans.c (Regular_Loop_to_gnu): Do not rotate the loop
	if -Og is enabled.
	(build_return_expr): Do not perform NRV if -Og is enabled.
	(Subprogram_Body_to_gnu): Likewise.
	(gnat_to_gnu) <N_Simple_Return_Statement>: Likewise.
	(Handled_Sequence_Of_Statements_to_gnu): Do not inline finalizers if
	-Og is enabled.
	* gcc-interface/utils.c (convert_to_index_type): Return early if -Og
	is enabled.

-- 
Eric Botcazou
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