Improve --help output to generate references to option aliases.

gcc/
	PR driver/68043
	* opts.c (undocumented_msg, use_diagnosed_msg): New globals.
	(print_filtered_help): Reference aliased option's name and encourage
	readers to use it in preference to the alias if the former is not
	documented.  Mention when using an option is diagnosed.
	* gcc.c (display_help): End each sentence with a period.

	* ada/gcc-interface/lang.opt: End each sentence that describes
	an option with a period.
	* c-family/c.opt: Same.
	* common.opt: Same.
	* config/aarch64/aarch64.opt: Same.
	* config/alpha/alpha.opt: Same.
	* config/arc/arc.opt: Same.
	* config/arm/arm.opt: Same.
	* config/avr/avr.opt: Same.
	* config/bfin/bfin.opt: Same.
	* config/c6x/c6x.opt: Same.
	* config/cr16/cr16.opt: Same.
	* config/cris/cris.opt: Same.
	* config/cris/linux.opt: Same.
	* config/darwin.opt: Same.
	* config/epiphany/epiphany.opt: Same.
	* config/fr30/fr30.opt: Same.
	* config/frv/frv.opt: Same.
	* config/ft32/ft32.opt: Same.
	* config/g.opt: Same.
	* config/h8300/h8300.opt: Same.
	* config/i386/cygming.opt: Same.
	* config/i386/djgpp.opt: Same.
	* config/i386/i386.opt: Same.
	* config/i386/interix.opt: Same.
	* config/i386/mingw-w64.opt: Same.
	* config/i386/mingw.opt: Same.
	* config/ia64/ia64.opt: Same.
	* config/ia64/ilp32.opt: Same.
	* config/iq2000/iq2000.opt: Same.
	* config/linux.opt: Same.
	* config/lm32/lm32.opt: Same.
	* config/lynx.opt: Same.
	* config/m32c/m32c.opt: Same.
	* config/m32r/m32r.opt: Same.
	* config/m68k/ieee.opt: Same.
	* config/m68k/m68k.opt: Same.
	* config/mcore/mcore.opt: Same.
	* config/mep/mep.opt: Same.
	* config/microblaze/microblaze.opt: Same.
	* config/mips/mips.opt: Same.
	* config/mmix/mmix.opt: Same.
	* config/mn10300/mn10300.opt: Same.
	* config/moxie/moxie.opt: Same.
	* config/msp430/msp430.opt: Same.
	* config/nios2/elf.opt: Same.
	* config/nios2/nios2.opt: Same.
	* config/nvptx/nvptx.opt: Same.
	* config/pa/pa-hpux.opt: Same.
	* config/pa/pa-hpux1010.opt: Same.
	* config/pa/pa-hpux1111.opt: Same.
	* config/pa/pa-hpux1131.opt: Same.
	* config/pa/pa.opt: Same.
	* config/pa/pa64-hpux.opt: Same.
	* config/pdp11/pdp11.opt: Same.
	* config/rl78/rl78.opt: Same.
	* config/rs6000/476.opt: Same.
	* config/rs6000/aix64.opt: Same.
	* config/rs6000/darwin.opt: Same.
	* config/rs6000/linux64.opt: Same.
	* config/rs6000/rs6000.opt: Same.
	* config/rs6000/sysv4.opt: Same.
	* config/s390/s390.opt: Same.
	* config/s390/tpf.opt: Same.
	* config/sh/sh.opt: Same.
	* config/sol2.opt: Same.
	* config/sparc/long-double-switch.opt: Same.
	* config/sparc/sparc.opt: Same.
	* config/spu/spu.opt: Same.
	* config/stormy16/stormy16.opt: Same.
	* config/tilegx/tilegx.opt: Same.
	* config/tilepro/tilepro.opt: Same.
	* config/v850/v850.opt: Same.
	* config/vax/vax.opt: Same.
	* config/visium/visium.opt: Same.
	* config/vms/vms.opt: Same.
	* config/vxworks.opt: Same.
	* config/xtensa/xtensa.opt: Same.
	* fortran/lang.opt: Same.

testsuite/
	PR driver/68043
	* gcc.misc-tests/help.exp: Adjust.
	* lib/options.exp (check_for_options): Add detail to output.

From-SVN: r229155

1 files changed, 8 insertions, 8 deletions

diff --git a/gcc/config/c6x/c6x.opt b/gcc/config/c6x/c6x.opt
index 56877af..72fd8fb 100644
--- a/gcc/config/c6x/c6x.opt
+++ b/gcc/config/c6x/c6x.opt
@@ -27,23 +27,23 @@ config/c6x/c6x-opts.h
 
 mbig-endian
 Target Report RejectNegative Mask(BIG_ENDIAN)
-Use big-endian byte order
+Use big-endian byte order.
 
 mlittle-endian
 Target Report RejectNegative InverseMask(BIG_ENDIAN, LITTLE_ENDIAN)
-Use little-endian byte order
+Use little-endian byte order.
 
 msim
 Target RejectNegative
-Use simulator runtime
+Use simulator runtime.
 
 msdata=
 Target RejectNegative Enum(c6x_sdata) Joined Var(c6x_sdata_mode) Init(C6X_SDATA_DEFAULT)
-Select method for sdata handling
+Select method for sdata handling.
 
 Enum
 Name(c6x_sdata) Type(enum c6x_sdata)
-Valid arguments for the -msdata= option
+Valid arguments for the -msdata= option.
 
 EnumValue
 Enum(c6x_sdata) String(none) Value(C6X_SDATA_NONE)
@@ -56,12 +56,12 @@ Enum(c6x_sdata) String(all) Value(C6X_SDATA_ALL)
 
 mdsbt
 Target Mask(DSBT)
-Compile for the DSBT shared library ABI
+Compile for the DSBT shared library ABI.
 
 mlong-calls
 Target Report Mask(LONG_CALLS)
-Avoid generating pc-relative calls; use indirection
+Avoid generating pc-relative calls; use indirection.
 
 march=
 Target RejectNegative Joined Enum(c6x_isa) Var(c6x_arch_option)
-Specify the name of the target architecture
+Specify the name of the target architecture.