driver: Fix redundant descriptions in options

Addresses issues where the two-column format of options descriptions was
used, but the columns were separated by spaces rather than a single tab,
causing the help output to be more verbose than intended.

gcc/ChangeLog:

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

	* common.opt: Avoid redundancy in the help text.
	* config/arc/arc.opt: Likewise.
	* config/cr16/cr16.opt: Likewise.

gcc/c-family/ChangeLog:

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

	* c.opt: Avoid redundancy in the help text.

gcc/fortran/ChangeLog:

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

	* lang.opt: Avoid redundancy in the help text.

gcc/testsuite/ChangeLog:

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

	* gcc.misc-tests/help.exp: Adapt to new output for
	-Walloc-size-larger-than= option.

gcc/ChangeLog

+2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>
+
+	* common.opt: Avoid redundancy in the help text.
+	* config/arc/arc.opt: Likewise.
+	* config/cr16/cr16.opt: Likewise.
+
 2020-03-14  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/93566

gcc/c-family/ChangeLog

+2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>
+
+	* c.opt: Avoid redundancy in the help text.
+
 2020-03-02  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/93958 - add missing -std=gnu++20.

gcc/c-family/c.opt

@@ -314,11 +314,11 @@ attempt to allocate objects larger than the specified number of bytes.
 
 Wno-alloc-size-larger-than
 C ObjC C++ LTO ObjC++ Alias(Walloc-size-larger-than=,18446744073709551615EiB,none) Warning
--Wno-alloc-size-larger-than Disable Walloc-size-larger-than= warning.  Equivalent to Walloc-size-larger-than=<SIZE_MAX> or larger.
+Disable Walloc-size-larger-than= warning.  Equivalent to Walloc-size-larger-than=<SIZE_MAX> or larger.
 
 Walloc-zero
 C ObjC C++ ObjC++ Var(warn_alloc_zero) Warning
--Walloc-zero Warn for calls to allocation functions that specify zero bytes.
+Warn for calls to allocation functions that specify zero bytes.
 
 Walloca-larger-than=
 C ObjC C++ LTO ObjC++ Var(warn_alloca_limit) Warning Joined Host_Wide_Int ByteSize Init(HOST_WIDE_INT_MAX)
@@ -328,7 +328,7 @@ alloca, and on bounded uses of alloca whose bound can be larger than
 
 Wno-alloca-larger-than
 C ObjC C++ LTO ObjC++ Alias(Walloca-larger-than=,18446744073709551615EiB,none) Warning
--Wno-alloca-larger-than Disable Walloca-larger-than= warning.  Equivalent to Walloca-larger-than=<SIZE_MAX> or larger.
+Disable Walloca-larger-than= warning.  Equivalent to Walloca-larger-than=<SIZE_MAX> or larger.
 
 Warray-bounds
 LangEnabledBy(C ObjC C++ LTO ObjC++)
@@ -1252,7 +1252,7 @@ larger than <number> bytes.
 
 Wno-vla-larger-than
 C ObjC C++ LTO ObjC++ Alias(Wvla-larger-than=,18446744073709551615EiB,none) Warning
--Wno-vla-larger-than Disable Wvla-larger-than= warning.  Equivalent to Wvla-larger-than=<SIZE_MAX> or larger.
+Disable Wvla-larger-than= warning.  Equivalent to Wvla-larger-than=<SIZE_MAX> or larger.
 
 Wvolatile
 C++ ObjC++ Var(warn_volatile) Warning
@@ -1530,7 +1530,7 @@ C++ ObjC++ Var(flag_elide_constructors) Init(1)
 
 felide-type
 C++ ObjC++ Var(flag_elide_type) Init(1)
--fno-elide-type Do not elide common elements in template comparisons.
+Do not elide common elements in template comparisons.
 
 fenforce-eh-specs
 C++ ObjC++ Var(flag_enforce_eh_specs) Init(1)
@@ -1782,7 +1782,7 @@ C ObjC C++ ObjC++ JoinedOrMissing RejectNegative UInteger
 
 fpretty-templates
 C++ ObjC++ Var(flag_pretty_templates) Init(1)
--fno-pretty-templates Do not pretty-print template specializations as the template signature followed by the arguments.
+Do not pretty-print template specializations as the template signature followed by the arguments.
 
 fprintf-return-value
 C ObjC C++ ObjC++ LTO Optimization Var(flag_printf_return_value) Init(1)

gcc/common.opt

@@ -1368,11 +1368,11 @@ Set minimum width of left margin of source code when showing source.
 
 fdisable-
 Common Joined RejectNegative Var(common_deferred_options) Defer
--fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass.
+-fdisable-[tree|rtl|ipa]-<pass>=range1+range2	Disable an optimization pass.
 
 fenable-
 Common Joined RejectNegative Var(common_deferred_options) Defer
--fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass.
+-fenable-[tree|rtl|ipa]-<pass>=range1+range2	Enable an optimization pass.
 
 fdump-
 Common Joined RejectNegative Var(common_deferred_options) Defer

gcc/config/arc/arc.opt

@@ -251,7 +251,7 @@ Cost to assume for a multiply instruction, with 4 being equal to a normal insn.
 
 mtune=
 Target RejectNegative ToLower Joined Var(arc_tune) Enum(arc_tune_attr) Init(ARC_TUNE_NONE)
--mcpu=TUNE Tune code for given ARC variant.
+-mtune=TUNE	Tune code for given ARC variant.
 
 Enum
 Name(arc_tune_attr) Type(int)

gcc/config/cr16/cr16.opt

@@ -20,7 +20,7 @@
 
 msim
 Target
--msim   Use simulator runtime.
+Use simulator runtime.
 
 mbit-ops
 Target Report Mask(BIT_OPS)

gcc/fortran/ChangeLog

+2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>
+
+	* lang.opt: Avoid redundancy in the help text.
+
 2020-03-12  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR middle-end/94120

gcc/testsuite/ChangeLog

+2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>
+
+	* gcc.misc-tests/help.exp: Adapt to new output for
+	-Walloc-size-larger-than= option.
+
 2020-03-14  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/89229

gcc/testsuite/gcc.misc-tests/help.exp

@@ -115,7 +115,7 @@ check_for_options c "-Q --help=warnings" {
 # Verify that an option that expects a byte-size argument is shown with
 # a meaningful byte-size argument as the value.
 check_for_options c "-Q --help=warnings" {
--Walloc-size-larger-than=[ \t]+[1-9][0-9]+ bytes
+-Walloc-size-larger-than=<bytes>[ \t]+[1-9][0-9]+ bytes
 -Wlarger-than=[^\n\r]+[1-9][0-9]+ bytes
 } "" ""