Sync down FSF r184235@google/gcc-4_6_2-mobile branch

1) Get mostly new patches from FSF gcc-4.6 branch
2) Fix PR52129
3) Insert GNU-stack note for all ARM targets

Change-Id: I2b9926981210e517e4021242908074319a91d6bd

1 files changed, 21 insertions, 12 deletions

diff --git a/gcc-4.6/gcc/fortran/invoke.texi b/gcc-4.6/gcc/fortran/invoke.texi
index 9a286c074..9b5396234 100644
--- a/gcc-4.6/gcc/fortran/invoke.texi
+++ b/gcc-4.6/gcc/fortran/invoke.texi
@@ -163,7 +163,7 @@ and warnings}.
 @item Code Generation Options
 @xref{Code Gen Options,,Options for code generation conventions}.
 @gccoptlist{-fno-automatic  -ff2c  -fno-underscoring @gol
--fwhole-file -fsecond-underscore @gol
+-fno-whole-file -fsecond-underscore @gol
 -fbounds-check -fcheck-array-temporaries  -fmax-array-constructor =@var{n} @gol
 -fcheck=@var{<all|array-temps|bounds|do|mem|pointer|recursion>} @gol
 -fcoarray=@var{<none|single>} -fmax-stack-var-size=@var{n} @gol
@@ -1206,19 +1206,22 @@ in the source, even if the names as seen by the linker are mangled to
 prevent accidental linking between procedures with incompatible
 interfaces.
 
-@item -fwhole-file
-@opindex @code{fwhole-file}
-By default, GNU Fortran parses, resolves and translates each procedure
-in a file separately.  Using this option modifies this such that the
-whole file is parsed and placed in a single front-end tree.  During
-resolution, in addition to all the usual checks and fixups, references
+@item -fno-whole-file
+@opindex @code{fno-whole-file}
+This flag causes the compiler to resolve and translate each procedure in
+a file separately. 
+
+By default, the whole file is parsed and placed in a single front-end tree.
+During resolution, in addition to all the usual checks and fixups, references
 to external procedures that are in the same file effect resolution of
-that procedure, if not already done, and a check of the interfaces. The
+that procedure, if not already done, and a check of the interfaces.  The
 dependences are resolved by changing the order in which the file is
 translated into the backend tree.  Thus, a procedure that is referenced
 is translated before the reference and the duplication of backend tree
 declarations eliminated.
 
+The @option{-fno-whole-file} option is deprecated and may lead to wrong code.
+
 @item -fsecond-underscore
 @opindex @code{fsecond-underscore}
 @cindex underscore
@@ -1435,10 +1438,16 @@ initialization options are provided by the
 the real and imaginary parts of local @code{COMPLEX} variables),
 @option{-finit-logical=@var{<true|false>}}, and
 @option{-finit-character=@var{n}} (where @var{n} is an ASCII character
-value) options.  These options do not initialize components of derived
-type variables, nor do they initialize variables that appear in an
-@code{EQUIVALENCE} statement.  (This limitation may be removed in
-future releases).
+value) options.  These options do not initialize
+@itemize @bullet
+@item
+allocatable arrays
+@item
+components of derived type variables
+@item
+variables that appear in an @code{EQUIVALENCE} statement.
+@end itemize
+(These limitations may be removed in future releases).
 
 Note that the @option{-finit-real=nan} option initializes @code{REAL}
 and @code{COMPLEX} variables with a quiet NaN. For a signalling NaN