extend.texi: Fix some spelling mistakes and typos.

2017-02-11  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* doc/extend.texi: Fix some spelling mistakes and typos.
	* doc/invoke.texi: Likewise.

From-SVN: r245367

gcc/ChangeLog

+2017-02-11  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* doc/extend.texi: Fix some spelling mistakes and typos.
+	* doc/invoke.texi: Likewise.
+
 2017-02-11  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR ipa/79224

gcc/doc/extend.texi

@@ -3516,7 +3516,7 @@ same as for the @option{-mcpu=} command-line option.
 @item sign-return-address
 @cindex @code{sign-return-address} function attribute, AArch64
 Select the function scope on which return address signing will be applied.  The
-behaviour and permissible arguments are the same as for the command-line option
+behavior and permissible arguments are the same as for the command-line option
 @option{-msign-return-address=}.  The default value is @code{none}.
 
 @end table
@@ -12657,7 +12657,7 @@ void __builtin_arm_set_fpscr (unsigned int)
 @subsection ARM ARMv8-M Security Extensions
 
 GCC implements the ARMv8-M Security Extensions as described in the ARMv8-M
-Security Extensions: Requiremenets on Development Tools Engineering
+Security Extensions: Requirements on Development Tools Engineering
 Specification, which can be found at
 @uref{http://infocenter.arm.com/help/topic/com.arm.doc.ecm0359818/ECM0359818_armv8m_security_extensions_reqs_on_dev_tools_1_0.pdf}.
 
@@ -13993,7 +13993,7 @@ data elements.  The following vectors typedefs are included in @code{msa.h}:
 @item @code{v2f64}, a vector of two 64-bit doubles.
 @end itemize
 
-Intructions and corresponding built-ins may have additional restrictions and/or
+Instructions and corresponding built-ins may have additional restrictions and/or
 input/output values manipulated:
 @itemize
 @item @code{imm0_1}, an integer literal in range 0 to 1;

gcc/doc/invoke.texi

@@ -4309,7 +4309,7 @@ fallthrough comments, only attributes disable the warning.
 @end itemize
 
 The comment needs to be followed after optional whitespace and other comments
-by @code{case} or @code{default} keywords or by a user label that preceeds some
+by @code{case} or @code{default} keywords or by a user label that precedes some
 @code{case} or @code{default} label.
 
 @smallexample
@@ -5145,7 +5145,7 @@ or where the result of the size computation in an integer type with infinite
 precision would exceed @code{SIZE_MAX / 2}.  The option argument @var{n}
 may end in one of the standard suffixes designating a multiple of bytes
 such as @code{kB} and @code{KiB} for kilobyte and kibibyte, respectively,
-@code{MB} and @code{MiB} for magabyte and mebibyte, and so on.
+@code{MB} and @code{MiB} for megabyte and mebibyte, and so on.
 @xref{Function Attributes}.
 
 @item -Walloca
@@ -5935,7 +5935,7 @@ while} statement.  This warning is also enabled by @option{-Wextra}.
 @opindex Wenum-compare
 @opindex Wno-enum-compare
 Warn about a comparison between values of different enumerated types.
-In C++ enumeral mismatches in conditional expressions are also
+In C++ enumerated type mismatches in conditional expressions are also
 diagnosed and the warning is enabled by default.  In C this warning is 
 enabled by @option{-Wall}.
 
@@ -9685,7 +9685,7 @@ The default value is 40.
 
 @item inline-min-speedup
 When estimated performance improvement of caller + callee runtime exceeds this
-threshold (in precent), the function can be inlined regardless the limit on
+threshold (in percent), the function can be inlined regardless of the limit on
 @option{--param max-inline-insns-single} and @option{--param
 max-inline-insns-auto}.
 
@@ -10483,14 +10483,14 @@ E.g. to disable inline code use
 @option{--param asan-instrumentation-with-call-threshold=0}.
 
 @item use-after-scope-direct-emission-threshold
-If size of a local variables in bytes is smaller of equal to this number,
+If size of a local variable in bytes is smaller or equal to this number,
 direct instruction emission is utilized to poison and unpoison local variables.
 Default value in 256.
 
 @item chkp-max-ctor-size
 Static constructors generated by Pointer Bounds Checker may become very
 large and significantly increase compile time at optimization level
-@option{-O1} and higher.  This parameter is a maximum nubmer of statements
+@option{-O1} and higher.  This parameter is a maximum number of statements
 in a single generated constructor.  Default value is 5000.
 
 @item max-fsm-thread-path-insns
@@ -15707,7 +15707,7 @@ Alternatively, @code{func_4} can be defined in the linker script.
 @cindex @code{RAMPZ}
 Some AVR devices support memories larger than the 64@tie{}KiB range
 that can be accessed with 16-bit pointers.  To access memory locations
-outside this 64@tie{}KiB range, the contentent of a @code{RAMP}
+outside this 64@tie{}KiB range, the content of a @code{RAMP}
 register is used as high part of the address:
 The @code{X}, @code{Y}, @code{Z} address register is concatenated
 with the @code{RAMPX}, @code{RAMPY}, @code{RAMPZ} special function