[Doc, AArch64] Fix/Update AArch64 options.

[Yvan Roux <yvan dot roux at linaro dot org>]

Hi,

I just noticed that some AArch64 options (-mpc-relative-literal-loads,
-msign-return-address=scope and -moverride=string) are missing in the
option summary part of the manual:

https://gcc.gnu.org/onlinedocs/gcc/Option-Summary.html#Option-Summary

and that the "-no" version of -mpc-relative-literal-loads is missing
in AArch64 options page:

https://gcc.gnu.org/onlinedocs/gcc/AArch64-Options.html#AArch64-Options

This patch fixes these issues and remove a redundant "Save" property
in mpc-relative-literal-loads description.

Tested by re-generating the manual, Ok for trunk ?

Thanks
Yvan

gcc/ChangeLog
2017-06-27  Yvan Roux  <yvan.roux@linaro.org>

       * config/aarch64/aarch64.opt
       (mpc-relative-literal-loads): Remove redundant property.
       * doc/invoke.texi (AArch64): Add missing options.

diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
index 942a7d5..0fd1bfa 100644
--- a/gcc/config/aarch64/aarch64.opt
+++ b/gcc/config/aarch64/aarch64.opt
@@ -146,7 +146,7 @@ EnumValue
 Enum(aarch64_abi) String(lp64) Value(AARCH64_ABI_LP64)
 
 mpc-relative-literal-loads
-Target Report Save Var(pcrelative_literal_loads) Init(2) Save
+Target Report Var(pcrelative_literal_loads) Init(2) Save
 PC relative literal loads.
 
 msign-return-address=
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index d1e097b..6e0e776 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -595,7 +595,9 @@ Objective-C and Objective-C++ Dialects}.
 -mlow-precision-recip-sqrt  -mno-low-precision-recip-sqrt@gol
 -mlow-precision-sqrt  -mno-low-precision-sqrt@gol
 -mlow-precision-div  -mno-low-precision-div @gol
--march=@var{name}  -mcpu=@var{name}  -mtune=@var{name}}
+-mpc-relative-literal-loads -mno-pc-relative-literal-loads @gol
+-msign-return-address=@var{scope} @gol
+-march=@var{name}  -mcpu=@var{name}  -mtune=@var{name}  -moverride=@var{string}}
 
 @emph{Adapteva Epiphany Options}
 @gccoptlist{-mhalf-reg-file  -mprefer-short-insn-regs @gol
@@ -14158,8 +14160,10 @@ across releases.
 This option is only intended to be useful when developing GCC.
 
 @item -mpc-relative-literal-loads
+@item -mno-pc-relative-literal-loads
 @opindex mpc-relative-literal-loads
-Enable PC-relative literal loads.  With this option literal pools are
+@opindex mno-pc-relative-literal-loads
+Enable or disable PC-relative literal loads.  With this option literal pools are
 accessed using a single instruction and emitted after each function.  This
 limits the maximum size of functions to 1MB.  This is enabled by default for
 @option{-mcmodel=tiny}.