tm.texi.in (Addressing Modes): Mention that this hook needs to be defined for native TLS.

	* doc/tm.texi.in (Addressing Modes) <TARGET_LEGITIMIZE_ADDRESS>:
	Mention that this hook needs to be defined for native TLS.
	* doc/tm.texi: Regenerate.

From-SVN: r188404

gcc/ChangeLog

+2012-06-12  Hans-Peter Nilsson  <hp@axis.com>
+
+	* doc/tm.texi.in (Addressing Modes) <TARGET_LEGITIMIZE_ADDRESS>:
+	Mention that this hook needs to be defined for native TLS.
+	* doc/tm.texi: Regenerate.
+
 2012-06-11  Mike Stump  <mikestump@comcast.net>
 
 	* emit-rtl.c (init_emit_once): Iterate through the

gcc/doc/tm.texi

@@ -5529,8 +5529,10 @@ The code of the hook should not alter the substructure of
 @var{x}.  If it transforms @var{x} into a more legitimate form, it
 should return the new @var{x}.
 
-It is not necessary for this hook to come up with a legitimate address.
-The compiler has standard ways of doing so in all cases.  In fact, it
+It is not necessary for this hook to come up with a legitimate address,
+with the exception of native TLS addresses (@pxref{Emulated TLS}).
+The compiler has standard ways of doing so in all cases.  In fact, if
+the target supports only emulated TLS, it
 is safe to omit this hook or make it return @var{x} if it cannot find
 a valid way to legitimize the address.  But often a machine-dependent
 strategy can generate better code.

gcc/doc/tm.texi.in

@@ -5465,8 +5465,10 @@ The code of the hook should not alter the substructure of
 @var{x}.  If it transforms @var{x} into a more legitimate form, it
 should return the new @var{x}.
 
-It is not necessary for this hook to come up with a legitimate address.
-The compiler has standard ways of doing so in all cases.  In fact, it
+It is not necessary for this hook to come up with a legitimate address,
+with the exception of native TLS addresses (@pxref{Emulated TLS}).
+The compiler has standard ways of doing so in all cases.  In fact, if
+the target supports only emulated TLS, it
 is safe to omit this hook or make it return @var{x} if it cannot find
 a valid way to legitimize the address.  But often a machine-dependent
 strategy can generate better code.