In reviewing the autogenerated list of remaining undocumented options
after my first pass through the whole chapter, I found several more
options I'd previously overlooked that should either be marked
Undocumented, or that were missing a RejectNegative attribute where
one was plainly appropriate.
gcc/c-family/ChangeLog
PR other/122243
* c.opt (-output-pch): Mark as Undocumented, as it seems to be
an internal option that has never been documented anyway.
(Werror-implicit-function-declaration): Mark deprecated option
that is not currently documented as Undocumented.
(fconstant-string-class=): Add RejectNegative property.
gcc/ChangeLog
PR other/122243
* common.opt (fbounds-check): Mark as Undocumented, expand comments
to explain why.
* config/frv/frv.opt (msched-lookahead=): Mark unused option as
Undocumented.
* config/m68k/m68k.opt (m68851): Add RejectNegative.
* config/nvptx/nvptx.opt (minit-regs=): Mark as Undocumented. It's
not currently documented and seems to have been introduced as a
stopgap to experiment with different implementation strategies.
* config/rs6000/476.opt (mpreserve-link-stack): Mark as Undocumented.
It seems to be an internal option that is enabled by default on the
cpu that can benefit from it.
---
gcc/c-family/c.opt | 8 +++++---
gcc/common.opt | 7 ++++---
gcc/config/frv/frv.opt | 3 ++-
gcc/config/m68k/m68k.opt | 2 +-
gcc/config/nvptx/nvptx.opt | 2 +-
gcc/config/rs6000/476.opt | 2 +-
6 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index e286c3b0535..a4065d68558 100644
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -149,8 +149,10 @@ C ObjC C++ ObjC++ Separate Alias(o)
-output=
C ObjC C++ ObjC++ Joined Alias(o)
+; The documented user option for PCH output is -o. The driver converts that
+; to -output-pch when invoking the front ends to produce a PCH file.
-output-pch
-C ObjC C++ ObjC++ Separate
+C ObjC C++ ObjC++ Separate Undocumented
-pedantic
C ObjC C++ ObjC++ Alias(pedantic)
@@ -758,7 +760,7 @@ C ObjC C++ ObjC++
; Documented in common.opt
Werror-implicit-function-declaration
-C ObjC RejectNegative Warning Alias(Werror=, implicit-function-declaration)
+C ObjC RejectNegative Undocumented Warning Alias(Werror=,
implicit-function-declaration)
This switch is deprecated; use -Werror=implicit-function-declaration instead.
Wexceptions
@@ -1875,7 +1877,7 @@ C++ ObjC++ Ignore
Does nothing. Preserved for backward compatibility.
fconstant-string-class=
-ObjC ObjC++ Joined MissingArgError(no class name specified with %qs)
+ObjC ObjC++ Joined RejectNegative MissingArgError(no class name specified with
%qs)
-fconst-string-class=<name> Use class <name> for constant strings.
fconstexpr-depth=
diff --git a/gcc/common.opt b/gcc/common.opt
index 59b8efe5414..4c73f51defa 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1213,10 +1213,11 @@ Common Var(flag_auto_profile_inlining) Init(1)
Optimization
Perform inlining using auto-profile.
; -fbounds-check causes gcc to generate array bounds checks.
-; It's presently used only for fortran and d languages, and is documented
-; in the manuals for those languages.
+; It's presently used only for fortran, algol68, and d languages.
+; In Fortran and algol68 it is a deprecated alias for -fcheck=bounds,
+; in D it is documented in the D language manual.
fbounds-check
-Common Var(flag_bounds_check)
+Common Undocumented Var(flag_bounds_check)
Generate code to check bounds before indexing arrays.
fbranch-count-reg
diff --git a/gcc/config/frv/frv.opt b/gcc/config/frv/frv.opt
index b9771a897fa..27e881d96a5 100644
--- a/gcc/config/frv/frv.opt
+++ b/gcc/config/frv/frv.opt
@@ -206,8 +206,9 @@ mscc
Target Mask(SCC)
Enable setting GPRs to the result of comparisons.
+; This option seems not to be used anywhere.
msched-lookahead=
-Target RejectNegative Joined UInteger Var(frv_sched_lookahead) Init(4)
+Target Undocumented RejectNegative Joined UInteger Var(frv_sched_lookahead)
Init(4)
Change the amount of scheduler lookahead.
msoft-float
diff --git a/gcc/config/m68k/m68k.opt b/gcc/config/m68k/m68k.opt
index a97fac654d8..7558ce1b9c7 100644
--- a/gcc/config/m68k/m68k.opt
+++ b/gcc/config/m68k/m68k.opt
@@ -87,7 +87,7 @@ Generate code for a 68332.
; Has no effect on gcc
m68851
-Target
+Target RejectNegative
Generate code for a 68851.
m68881
diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt
index 62a4fa46455..c3b128d3e04 100644
--- a/gcc/config/nvptx/nvptx.opt
+++ b/gcc/config/nvptx/nvptx.opt
@@ -204,7 +204,7 @@ Target RejectNegative Negative(mptx=) ToLower Joined
Enum(ptx_version) Var(ptx_v
Specify the PTX ISA version to use.
minit-regs=
-Target Var(nvptx_init_regs) IntegerRange(0, 3) Joined UInteger Init(3)
+Target Undocumented Var(nvptx_init_regs) IntegerRange(0, 3) Joined UInteger
Init(3)
Initialize ptx registers.
mptx-comment
diff --git a/gcc/config/rs6000/476.opt b/gcc/config/rs6000/476.opt
index ac3de91ff5b..43230a1466e 100644
--- a/gcc/config/rs6000/476.opt
+++ b/gcc/config/rs6000/476.opt
@@ -20,5 +20,5 @@
; <http://www.gnu.org/licenses/>.
mpreserve-link-stack
-Target Var(rs6000_link_stack) Init(-1) Save
+Target Undocumented Var(rs6000_link_stack) Init(-1) Save
Preserve the PowerPC 476's link stack by matching up a blr with the bcl/bl
insns used for GOT accesses.
--
2.39.5
