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, 9 insertions, 9 deletions

diff --git a/gcc/config/epiphany/epiphany.opt b/gcc/config/epiphany/epiphany.opt
index e2deed6db04..297ceb81a39 100644
--- a/gcc/config/epiphany/epiphany.opt
+++ b/gcc/config/epiphany/epiphany.opt
@@ -29,7 +29,7 @@ preferentially allocate registers that allow short instruction generation.
 
 mbranch-cost=
 Target RejectNegative Joined UInteger Var(epiphany_branch_cost) Init(3)
-Set branch cost
+Set branch cost.
 
 mcmove
 Target Mask(CMOVE)
@@ -37,7 +37,7 @@ enable conditional move instruction usage.
 
 mnops=
 Target RejectNegative Joined UInteger Var(epiphany_n_nops) Init(0)
-set number of nops to emit before each insn pattern
+set number of nops to emit before each insn pattern.
 
 ; Problems with using the flags from fsub for comparison are:
 ; - Because of underflow (lack of subnormal numbers), different small numbers
@@ -49,19 +49,19 @@ set number of nops to emit before each insn pattern
 ; equal.
 msoft-cmpsf
 Target Mask(SOFT_CMPSF)
-Use software floating point comparisons
+Use software floating point comparisons.
 
 msplit-lohi
 Target Mask(SPLIT_LOHI)
-Enable split of 32 bit immediate loads into low / high part
+Enable split of 32 bit immediate loads into low / high part.
 
 mpost-inc
 Target Mask(POST_INC)
-Enable use of POST_INC / POST_DEC
+Enable use of POST_INC / POST_DEC.
 
 mpost-modify
 Target Mask(POST_MODIFY)
-Enable use of POST_MODIFY
+Enable use of POST_MODIFY.
 
 mstack-offset=
 Target RejectNegative Joined UInteger Var(epiphany_stack_offset) Init(EPIPHANY_STACK_OFFSET)
@@ -73,11 +73,11 @@ Assume round to nearest is selected for purposes of scheduling.
 
 mlong-calls
 Target Mask(LONG_CALLS)
-Generate call insns as indirect calls
+Generate call insns as indirect calls.
 
 mshort-calls
 Target Mask(SHORT_CALLS)
-Generate call insns as direct calls
+Generate call insns as direct calls.
 
 msmall16
 Target Mask(SMALL16)
@@ -105,7 +105,7 @@ Enum(attr_fp_mode) String(int) Value(FP_MODE_INT)
 
 may-round-for-trunc
 Target Mask(MAY_ROUND_FOR_TRUNC)
-A floatig point to integer truncation may be replaced with rounding to save mode switching
+A floatig point to integer truncation may be replaced with rounding to save mode switching.
 
 mvect-double
 Target Mask(VECT_DOUBLE)