invoke.texi (Option Summary): Add -momit-leaf-frame-pointer (i386 Options):…

invoke.texi (Option Summary): Add -momit-leaf-frame-pointer (i386 Options): Document -momit-leaf-frame-pointer.

	* invoke.texi (Option Summary): Add -momit-leaf-frame-pointer
	(i386 Options): Document -momit-leaf-frame-pointer.

From-SVN: r41881

gcc/ChangeLog

+2001-05-06  Andreas Jaeger  <aj@suse.de>
+
+	* invoke.texi (Option Summary): Add -momit-leaf-frame-pointer
+	(i386 Options): Document -momit-leaf-frame-pointer.
+
 2001-05-06  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* c-typeck.c (internal_build_compound_expr): Check for
@@ -74,7 +79,7 @@
 	(L_regs_d3_4): New for _.d3 and _.d4.
 	(L_regs_d5_6): Likewise.
 	(L_regs_d1_2): Likewise.
-	* config/m68hc11/t-m68hc11-gas (T_CPPFLAGS): Compile new parts.	
+	* config/m68hc11/t-m68hc11-gas (T_CPPFLAGS): Compile new parts.
 
 2001-05-04  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 
@@ -87,7 +92,7 @@
 	* config/m68hc11/larith.asm (divmodhi4): Empty for 68HC12.
 	(__mulsi3): Rewrite for 68HC12.
 	* config/m68hc11/m68hc11.md (divmodhi4): Use idivs for 68HC12.
-	Mark 'x' constraint with earlyclobber to prevent a 
+	Mark 'x' constraint with earlyclobber to prevent a
 	RELOAD_FOR_OTHER_ADDRESS to go in it.
 	(mulhi3_m68hc12): New pattern.
 	(mulhi3_m68hc11): Rename of mulhi3.
@@ -144,7 +149,7 @@
 	`bool' parameter to `int'.
 
 	* hash.c (hash_lookup): Likewise.
-	
+
 	* hash.h (hash_lookup): Likewise.
 
 	* tlink.c (symbol_hash_lookup, demangled_hash_lookup): Likewise.

gcc/invoke.texi

@@ -473,7 +473,7 @@ in the following sections.
 -mpreferred-stack-boundary=@var{num} @gol
 -mthreads -mno-align-stringops -minline-all-stringops @gol
 -mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol
--m96bit-long-double -mregparm=@var{num}}
+-m96bit-long-double -mregparm=@var{num} -momit-leaf-frame-pointer}
 
 @emph{HPPA Options}
 @gccoptlist{
@@ -6924,6 +6924,14 @@ By default GCC inlines string operations only when destination is known to be
 aligned at least to 4 byte boundary. This enables more inlining, increase code
 size, but may improve performance of code that depends on fast memcpy, strlen
 and memset for short lengths.
+
+@item -momit-leaf-frame-pointer
+@kindex -momit-leaf-frame-pointer
+Don't keep the frame pointer in a register for leaf functions.  This
+avoids the instructions to save, set up and restore frame pointers and
+makes an extra register available in leaf functions.  The option
+@samp{-fomit-frame-pointer} removes the frame pointer for all functions
+which might make debugging harder.
 @end table
 
 @node HPPA Options