2005-11-14 Cyrille Comar <comar@adacore.com>

	    Thomas Quinot  <quinot@adacore.com>

	* exp_ch5.adb (Expand_N_Assignment_Statement, Tagged_Case): For an
	assignment of a value of a tagged type that has been rewritten to a
	block statement, it is known by construction that no checks are
	necessary for the statements within the block: analyze it with checks
	suppressed.
	(Expand_N_If_Statement): When killing a dead then-branch in an
	if-statement that has elsif_parts, recompute the Current_Value node
	for any entity whose value is known from the condition of the first
	elsif_part.
	(Expand_N_Return_Statement): When returning a mutable record, convert
	the return value into its actual subtype in order to help the backend
	to return the actual size instead of the maximum. This is another
	aftermath of not returning mutable records on the sec-stack anymore.

	* sem_ch5.ads, sem_ch5.adb (Analyze_Iteration_Scheme): Minor change to
	handling of error msg for suspicious reverse range iteration.
	(Check_Possible_Current_Value_Condition): Move declaration from body to
	spec, to allow this subprogram to be called from exp_ch5.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@106972 138bc75d-0d04-0410-961f-82ee72b054a4

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