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[Ada] More work on short circuit forms

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Robert Dewar <dewar at adacore dot com>
Date: Thu, 17 Jun 2010 18:05:31 +0200
Subject: [Ada] More work on short circuit forms

This patch cleans up the method for choosing whether to use the new
N_Expressions_With_Actions node for short circuit forms, by introducing
a new flag Opt.Use_Expression_With_Actions. This is still off by default
for now.

Tested on x86_64-pc-linux-gnu, committed on trunk

2010-06-17  Robert Dewar  <dewar@adacore.com>

	* debug.adb: Add documentation for debug flags .X and .Y
	* exp_ch4.adb (Expand_Short_Circuit_Operator): Use
	Use_Expression_With_Actions.
	* gnat1drv.adb (Adjust_Global_Switches): Set
	Use_Expression_With_Actions.
	* opt.ads (Use_Expression_With_Actions): New switch.

Attachment: difs
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