re PR target/1078 (Problems with attributes documentation)

2016-01-01  Sandra Loosemore  <sandra@codesourcery.com>

	PR 1078

	gcc/
	* extend.texi (Common Function Attributes) <no_stack_limit>: New.
	* invoke.texi (Code Gen Options) <-fno-stack-limit>: Add pointer
	to corresponding attribute.

From-SVN: r232034

gcc/ChangeLog

 2016-01-01  Sandra Loosemore  <sandra@codesourcery.com>
 
+	PR 1078
+
+	* extend.texi (Common Function Attributes) <no_stack_limit>: New.
+	* invoke.texi (Code Gen Options) <-fno-stack-limit>: Add pointer
+	to corresponding attribute.
+
+2016-01-01  Sandra Loosemore  <sandra@codesourcery.com>
+
 	* doc/extend.texi (Common Function Attributes) <noplt>: Move
 	to correct alphabetization of table.  Copy-edit and correct
 	markup.

gcc/doc/extend.texi

@@ -2877,6 +2877,12 @@ prologue which decides whether to split the stack.  Functions with the
 @code{no_split_stack} attribute do not have that prologue, and thus
 may run with only a small amount of stack space available.
 
+@item no_stack_limit
+@cindex @code{no_stack_limit} function attribute
+This attribute locally overrides the @option{-fstack-limit-register}
+and @option{-fstack-limit-symbol} command-line options; it has the effect
+of disabling stack limit checking in the function it applies to.
+
 @item noclone
 @cindex @code{noclone} function attribute
 This function attribute prevents a function from being considered for

gcc/doc/invoke.texi

@@ -24631,6 +24631,9 @@ and grows downwards, you can use the flags
 @option{-Wl,--defsym,__stack_limit=0x7ffe0000} to enforce a stack limit
 of 128KB@.  Note that this may only work with the GNU linker.
 
+You can locally override stack limit checking by using the
+@code{no_stack_limit} function attribute (@pxref{Function Attributes}).
+
 @item -fsplit-stack
 @opindex fsplit-stack
 Generate code to automatically split the stack before it overflows.