extend.texi: Clean up @xref{...} uses.

	* doc/extend.texi: Clean up @xref{...} uses.
	* doc/invoke.texi: Likewise.

From-SVN: r243717

gcc/ChangeLog

+2016-12-15  Jakub Jelinek  <jakub@redhat.com>
+
+	* doc/extend.texi: Clean up @xref{...} uses.
+	* doc/invoke.texi: Likewise.
+
 2016-12-15  Richard Earnshaw  <rearnsha@arm.com>
 
 	* arm-fpus.def: Add CNAME field to all FPU definitions.

gcc/doc/extend.texi

@@ -1057,7 +1057,7 @@ implements conversions between @code{__fp16} and other types as library
 calls.
 
 It is recommended that portable code use the @code{_Float16} type defined
-by ISO/IEC TS 18661-3:2015 (@xref{Floating Types}).
+by ISO/IEC TS 18661-3:2015.  @xref{Floating Types}.
 
 @node Decimal Float
 @section Decimal Floating Types
@@ -2089,7 +2089,7 @@ union foo f = @{ .d = 4 @};
 converts 4 to a @code{double} to store it in the union using
 the second element.  By contrast, casting 4 to type @code{union foo}
 stores it into the union as the integer @code{i}, since it is
-an integer.  (@xref{Cast to Union}.)
+an integer.  @xref{Cast to Union}.
 
 You can combine this technique of naming elements with ordinary C
 initialization of successive elements.  Each initializer element that
@@ -2181,7 +2181,7 @@ specified is a union type.  You can specify the type either with the
 @code{union} keyword or with a @code{typedef} name that refers to
 a union.  A cast to a union actually creates a compound literal and
 yields an lvalue, not an rvalue like true casts do.
-(@xref{Compound Literals}.)
+@xref{Compound Literals}.
 
 The types that may be cast to the union type are those of the members
 of the union.  Thus, given the following union and variables:

gcc/doc/invoke.texi

@@ -7262,8 +7262,8 @@ release to an another.
 @opindex fno-keep-inline-dllexport
 This is a more fine-grained version of @option{-fkeep-inline-functions},
 which applies only to functions that are declared using the @code{dllexport}
-attribute or declspec (@xref{Function Attributes,,Declaring Attributes of
-Functions}.)
+attribute or declspec.  @xref{Function Attributes,,Declaring Attributes of
+Functions}.
 
 @item -fkeep-inline-functions
 @opindex fkeep-inline-functions