--- a/gcc/config/xtensa/xtensa.opt	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/config/xtensa/xtensa.opt	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,6 @@
 ; Options for the Tensilica Xtensa port of the compiler.
 
-; Copyright (C) 2005, 2007, 2008, 2010 Free Software Foundation, Inc.
+; Copyright (C) 2005-2017 Free Software Foundation, Inc.
 ;
 ; This file is part of GCC.
 ;
@@ -20,24 +20,28 @@
 
 mconst16
 Target Report Mask(CONST16)
-Use CONST16 instruction to load constants
+Use CONST16 instruction to load constants.
 
 mforce-no-pic
 Target Report Mask(FORCE_NO_PIC)
-Disable position-independent code (PIC) for use in OS kernel code
+Disable position-independent code (PIC) for use in OS kernel code.
 
 mlongcalls
 Target
-Use indirect CALLXn instructions for large programs
+Use indirect CALLXn instructions for large programs.
 
 mtarget-align
 Target
-Automatically align branch targets to reduce branch penalties
+Automatically align branch targets to reduce branch penalties.
 
 mtext-section-literals
 Target
-Intersperse literal pools with code in the text section
+Intersperse literal pools with code in the text section.
+
+mauto-litpools
+Target Report Mask(AUTO_LITPOOLS)
+Relax literals in assembler and place them automatically in the text section.
 
 mserialize-volatile
 Target Report Mask(SERIALIZE_VOLATILE)
--mno-serialize-volatile	Do not serialize volatile memory references with MEMW instructions
+-mno-serialize-volatile	Do not serialize volatile memory references with MEMW instructions.