Merge remote-tracking branch 'aosp/master' into replicant-6.0HEADreplicant-6.0-0004-transitionreplicant-6.0-0004-rc6replicant-6.0-0004-rc5-transitionreplicant-6.0-0004-rc5replicant-6.0-0004-rc4replicant-6.0-0004-rc3replicant-6.0-0004-rc2replicant-6.0-0004-rc1replicant-6.0-0004replicant-6.0master

2 files changed, 57 insertions, 1 deletions

diff --git a/gcc-4.9/gcc/doc/extend.texi b/gcc-4.9/gcc/doc/extend.texi
index 4c0914a35..dfef30042 100644
--- a/gcc-4.9/gcc/doc/extend.texi
+++ b/gcc-4.9/gcc/doc/extend.texi
@@ -4088,6 +4088,25 @@ Specify which floating-point unit to use.  The
 @code{target("fpmath=sse,387")} option must be specified as
 @code{target("fpmath=sse+387")} because the comma would separate
 different options.
+
+@item indirect_branch("@var{choice}")
+@cindex @code{indirect_branch} function attribute, x86
+On x86 targets, the @code{indirect_branch} attribute causes the compiler
+to convert indirect call and jump with @var{choice}.  @samp{keep}
+keeps indirect call and jump unmodified.  @samp{thunk} converts indirect
+call and jump to call and return thunk.  @samp{thunk-inline} converts
+indirect call and jump to inlined call and return thunk.
+@samp{thunk-extern} converts indirect call and jump to external call
+and return thunk provided in a separate object file.
+
+@item function_return("@var{choice}")
+@cindex @code{function_return} function attribute, x86
+On x86 targets, the @code{function_return} attribute causes the compiler
+to convert function return with @var{choice}.  @samp{keep} keeps function
+return unmodified.  @samp{thunk} converts function return to call and
+return thunk.  @samp{thunk-inline} converts function return to inlined
+call and return thunk.  @samp{thunk-extern} converts function return to
+external call and return thunk provided in a separate object file.
 @end table
 
 On the PowerPC, the following options are allowed:
diff --git a/gcc-4.9/gcc/doc/invoke.texi b/gcc-4.9/gcc/doc/invoke.texi
index 698ecd659..297657a39 100644
--- a/gcc-4.9/gcc/doc/invoke.texi
+++ b/gcc-4.9/gcc/doc/invoke.texi
@@ -694,7 +694,8 @@ Objective-C and Objective-C++ Dialects}.
 -m32 -m64 -mx32 -m16 -mlarge-data-threshold=@var{num} @gol
 -msse2avx -mfentry -m8bit-idiv @gol
 -mavx256-split-unaligned-load -mavx256-split-unaligned-store @gol
--mstack-protector-guard=@var{guard}}
+-mstack-protector-guard=@var{guard} -mindirect-branch=@var{choice} @gol
+-mfunction-return=@var{choice} -mindirect-branch-register}
 
 @emph{i386 and x86-64 Windows Options}
 @gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll @gol
@@ -16021,6 +16022,42 @@ locations are @samp{global} for global canary or @samp{tls} for per-thread
 canary in the TLS block (the default).  This option has effect only when
 @option{-fstack-protector} or @option{-fstack-protector-all} is specified.
 
+@item -mindirect-branch=@var{choice}
+@opindex -mindirect-branch
+Convert indirect call and jump with @var{choice}.  The default is
+@samp{keep}, which keeps indirect call and jump unmodified.
+@samp{thunk} converts indirect call and jump to call and return thunk.
+@samp{thunk-inline} converts indirect call and jump to inlined call
+and return thunk.  @samp{thunk-extern} converts indirect call and jump
+to external call and return thunk provided in a separate object file.
+You can control this behavior for a specific function by using the
+function attribute @code{indirect_branch}.  @xref{Function Attributes}.
+
+Note that @option{-mcmodel=large} is incompatible with
+@option{-mindirect-branch=thunk} nor
+@option{-mindirect-branch=thunk-extern} since the thunk function may
+not be reachable in large code model.
+
+@item -mfunction-return=@var{choice}
+@opindex -mfunction-return
+Convert function return with @var{choice}.  The default is @samp{keep},
+which keeps function return unmodified.  @samp{thunk} converts function
+return to call and return thunk.  @samp{thunk-inline} converts function
+return to inlined call and return thunk.  @samp{thunk-extern} converts
+function return to external call and return thunk provided in a separate
+object file.  You can control this behavior for a specific function by
+using the function attribute @code{function_return}.
+@xref{Function Attributes}.
+
+Note that @option{-mcmodel=large} is incompatible with
+@option{-mfunction-return=thunk} nor
+@option{-mfunction-return=thunk-extern} since the thunk function may
+not be reachable in large code model.
+
+@item -mindirect-branch-register
+@opindex -mindirect-branch-register
+Force indirect call and jump via register.
+
 @end table
 
 These @samp{-m} switches are supported in addition to the above