[multiple changes]

[multiple changes]

2011-09-02  Bob Duff  <duff@adacore.com>

	* einfo.adb: (Has_Xref_Entry): Do not call
	Implementation_Base_Type. Lib.Xref has been
	rewritten to avoid the need for it, and it was costly.
	* s-htable.ads,s-htable.adb: (Present,Set_If_Not_Present): New
	functions in support of efficient xref.
	* lib-xref-alfa.adb: Misc changes related to Key component of
	type Xref_Entry.
	* lib-xref.adb: (Add_Entry,etc): Speed improvement.
	(New_Entry): Call Implementation_Base_Type, because Has_Xref_Entry
	no longer does. This is the one place where it is needed.

2011-09-02  Johannes Kanig  <kanig@adacore.com>

	* g-comlin.adb (Getopt): New optional argument Concatenate to have
	similar interface as the other Getopt function.

2011-09-02  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch4.adb: (Expand_Allocator_Expression): Do not generate
	a call to Set_Finalize_Address if there is no allocator available.
	* exp_util.adb: (Build_Allocate_Deallocate_Proc): Account for
	a case of allocator expansion where the allocator is not expanded but
	needs a custom allocate routine. Code reformatting.
	(Is_Finalizable_Transient): Remove local variables Has_Rens and
	Ren_Obj. Code reformatting.
	(Is_Renamed): Renamed to Is_Aliased. Add code to detect aliasing
	through the use of 'reference.
	* sem_ch4.adb: (Analyze_Allocator): Detect allocators generated
	as part of build-in-place expansion. They are intentionally marked as
	coming from source, but their parents are not.

From-SVN: r178436