[gcc r14-9860] Fix up duplicated words mostly in comments, part 2

[gcc r14-9860] Fix up duplicated words mostly in comments, part 2

[Jakub Jelinek]

https://gcc.gnu.org/g:64aa48ced03ad214cd05f114f5790e286fdcfbab

commit r14-9860-g64aa48ced03ad214cd05f114f5790e286fdcfbab
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Apr 9 09:29:08 2024 +0200

    Fix up duplicated words mostly in comments, part 2
    
    Another patch from eyeballing
    git grep -v 'long long\|optab optab\|template template\|double double' | grep ' \([a-zA-Z]\+\) \1 '
    output, this time in gcc/ subdirectory.
    
    2024-04-09  Jakub Jelinek  <jakub@redhat.com>
    
    gcc/
            * expr.cc (convert_mode_scalar): Fix duplicated words in comment;
            into into -> it into.
            * function.h (function::cond_uids): Fix duplicated words in comment;
            same same -> same.
            * config/riscv/riscv-vector-costs.cc
            (costs::adjust_vect_cost_per_loop): Fix duplicated words in comment;
            model model -> model.
            * config/riscv/riscv-vector-builtins-shapes.cc (build_base): Fix
            duplicated words in comment; for for -> for.
            * config/riscv/riscv-avlprop.cc (pass_avlprop::execute): Fix
            duplicated words in comment; more more -> more.
            * config/aarch64/driver-aarch64.cc (host_detect_local_cpu): Fix
            duplicated words in comment; be be -> be.
            * tree-profile.cc (masking_vectors): Fix duplicated words in comment;
            has has -> has, the the -> the.
            * value-range.cc (irange::set_range_from_bitmask): Fix duplicated
            words in comment; the the -> the.
            * gcov.cc (add_condition_counts): Fix duplicated words in comment;
            to to -> to.
            * vr-values.cc (get_scev_info): Fix duplicated words in comment;
            the the -> to the.
            * tree-vrp.cc (fully_replaceable): Fix duplicated words in comment;
            by by -> by.
            * mode-switching.cc (single_succ_confluence_n): Fix duplicated words
            in comment; the the -> the.
            * tree-ssa-phiopt.cc (value_replacement): Fix duplicated words in
            comment; can can -> we can.
            * gimple-range-phi.cc (phi_analyzer::process_phi): Fix duplicated words
            in comment; it it -> it is.
            * tree-ssa-sccvn.cc (visit_phi): Fix duplicated words in comment;
            to to -> to.
            * rtl-ssa/accesses.h (use_info::next_debug_insn_use): Fix duplicated
            words in comment; if if -> if.
            * doc/options.texi (InverseMask): Fix duplicated words; and and -> and.
            Change take to takes.
            * doc/invoke.texi (fanalyzer-undo-inlining): Fix duplicated words;
            be be -> be.
            (-minline-memops-threshold): Likewise.
    gcc/analyzer/
            * analyzer.opt (Wanalyzer-undefined-behavior-strtok): Fix duplicated
            words; in in -> in.
            * program-state.cc (sm_state_map::replay_call_summary): Fix duplicated
            words in comment; to to -> to.
            (program_state::replay_call_summary): Likewise.
            * region-model.cc (region_model::replay_call_summary): Likewise.
    gcc/c/
            * c-decl.cc (previous_tag): Fix duplicated words in comment; the the
            -> the.
            (diagnose_mismatched_decls): Fix duplicated words in comment;
            about about -> about.
    gcc/cp/
            * constexpr.cc (build_new_constexpr_heap_type): Fix duplicated words
            in comment; is is -> is.
            * cp-tree.def (CO_RETURN_EXPR): Fix duplicated words in comment;
            for for -> for.
            * parser.cc (fixup_blocks_walker): Fix duplicated words in comment;
            is is -> is.
            * semantics.cc (fixup_template_type): Fix duplicated words in comment;
            for for -> for.
            (finish_omp_for): Fix duplicated words in comment; the the -> the.
            * pt.cc (more_specialized_fn): Fix duplicated words in comment;
            think think -> think.
            (type_targs_deducible_from): Fix duplicated words in comment; the the
            -> the.
    gcc/jit/
            * docs/topics/expressions.rst (Constructor expressions): Fix
            duplicated words; have have -> have.

Diff:
---
 gcc/analyzer/analyzer.opt                        | 2 +-
 gcc/analyzer/program-state.cc                    | 4 ++--
 gcc/analyzer/region-model.cc                     | 2 +-
 gcc/c/c-decl.cc                                  | 4 ++--
 gcc/config/aarch64/driver-aarch64.cc             | 2 +-
 gcc/config/riscv/riscv-avlprop.cc                | 2 +-
 gcc/config/riscv/riscv-vector-builtins-shapes.cc | 2 +-
 gcc/config/riscv/riscv-vector-costs.cc           | 2 +-
 gcc/cp/constexpr.cc                              | 2 +-
 gcc/cp/cp-tree.def                               | 2 +-
 gcc/cp/parser.cc                                 | 2 +-
 gcc/cp/pt.cc                                     | 4 ++--
 gcc/cp/semantics.cc                              | 4 ++--
 gcc/doc/invoke.texi                              | 4 ++--
 gcc/doc/options.texi                             | 6 +++---
 gcc/expr.cc                                      | 2 +-
 gcc/function.h                                   | 2 +-
 gcc/gcov.cc                                      | 2 +-
 gcc/gimple-range-phi.cc                          | 2 +-
 gcc/jit/docs/topics/expressions.rst              | 2 +-
 gcc/mode-switching.cc                            | 2 +-
 gcc/rtl-ssa/accesses.h                           | 2 +-
 gcc/tree-profile.cc                              | 4 ++--
 gcc/tree-ssa-phiopt.cc                           | 2 +-
 gcc/tree-ssa-sccvn.cc                            | 2 +-
 gcc/tree-vrp.cc                                  | 2 +-
 gcc/value-range.cc                               | 2 +-
 gcc/vr-values.cc                                 | 2 +-
 28 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/gcc/analyzer/analyzer.opt b/gcc/analyzer/analyzer.opt
index 67c0c5023eb..bbf2ba670d8 100644
--- a/gcc/analyzer/analyzer.opt
+++ b/gcc/analyzer/analyzer.opt
@@ -224,7 +224,7 @@ Warn about code paths in which an unsanitized value is used as a size.
 
 Wanalyzer-undefined-behavior-strtok
 Common Var(warn_analyzer_undefined_behavior_strtok) Init(1) Warning
-Warn about code paths in in which a call is made to strtok with undefined behavior.
+Warn about code paths in which a call is made to strtok with undefined behavior.
 
 Wanalyzer-use-after-free
 Common Var(warn_analyzer_use_after_free) Init(1) Warning
diff --git a/gcc/analyzer/program-state.cc b/gcc/analyzer/program-state.cc
index c88652baf5c..7842b596a4b 100644
--- a/gcc/analyzer/program-state.cc
+++ b/gcc/analyzer/program-state.cc
@@ -877,7 +877,7 @@ program_state::program_state (const extrinsic_state &ext_state)
     }
 }
 
-/* Attempt to to use R to replay SUMMARY into this object.
+/* Attempt to use R to replay SUMMARY into this object.
    Return true if it is possible.  */
 
 bool
@@ -1625,7 +1625,7 @@ program_state::detect_leaks (const program_state &src_state,
 	dest_state.m_region_model->unset_dynamic_extents (reg);
 }
 
-/* Attempt to to use R to replay SUMMARY into this object.
+/* Attempt to use R to replay SUMMARY into this object.
    Return true if it is possible.  */
 
 bool
diff --git a/gcc/analyzer/region-model.cc b/gcc/analyzer/region-model.cc
index 98f287145c6..665873dbe94 100644
--- a/gcc/analyzer/region-model.cc
+++ b/gcc/analyzer/region-model.cc
@@ -5623,7 +5623,7 @@ region_model::update_for_return_superedge (const return_superedge &return_edge,
   update_for_return_gcall (call_stmt, ctxt);
 }
 
-/* Attempt to to use R to replay SUMMARY into this object.
+/* Attempt to use R to replay SUMMARY into this object.
    Return true if it is possible.  */
 
 bool
diff --git a/gcc/c/c-decl.cc b/gcc/c/c-decl.cc
index c747abe9f4e..345090dae38 100644
--- a/gcc/c/c-decl.cc
+++ b/gcc/c/c-decl.cc
@@ -2069,7 +2069,7 @@ locate_old_decl (tree decl)
 
 
 /* Helper function.  For a tagged type, it finds the declaration
-   for a visible tag declared in the the same scope if such a
+   for a visible tag declared in the same scope if such a
    declaration exists.  */
 static tree
 previous_tag (tree type)
@@ -2316,7 +2316,7 @@ diagnose_mismatched_decls (tree newdecl, tree olddecl,
      (C23 6.7.2.2/5), but may pose portability problems.  */
   else if (enum_and_int_p
 	   && TREE_CODE (newdecl) != TYPE_DECL
-	   /* Don't warn about about acc_on_device built-in redeclaration,
+	   /* Don't warn about acc_on_device built-in redeclaration,
 	      the built-in is declared with int rather than enum because
 	      the enum isn't intrinsic.  */
 	   && !(TREE_CODE (olddecl) == FUNCTION_DECL
diff --git a/gcc/config/aarch64/driver-aarch64.cc b/gcc/config/aarch64/driver-aarch64.cc
index 5c6ee60a266..b620351e572 100644
--- a/gcc/config/aarch64/driver-aarch64.cc
+++ b/gcc/config/aarch64/driver-aarch64.cc
@@ -452,7 +452,7 @@ host_detect_local_cpu (int argc, const char **argv)
   if (tune)
     return res;
 
-  /* Add any features that should be be present, but can't be verified using
+  /* Add any features that should be present, but can't be verified using
      the /proc/cpuinfo "Features" list.  */
   extension_flags |= unchecked_extension_flags & default_flags;
 
diff --git a/gcc/config/riscv/riscv-avlprop.cc b/gcc/config/riscv/riscv-avlprop.cc
index 4ae15f25ca2..71d6f6a0495 100644
--- a/gcc/config/riscv/riscv-avlprop.cc
+++ b/gcc/config/riscv/riscv-avlprop.cc
@@ -458,7 +458,7 @@ pass_avlprop::execute (function *fn)
 
 	  /* TODO: We only do AVL propagation for VLMAX AVL with tail
 	     agnostic policy since we have missed-LEN information partial
-	     autovectorization.  We could add more more AVL propagation
+	     autovectorization.  We could add more AVL propagation
 	     for intrinsic codes in the future.  */
 	  if (vlmax_ta_p (insn->rtl ()))
 	    m_candidates.safe_push (std::make_pair (AVLPROP_VLMAX_TA, insn));
diff --git a/gcc/config/riscv/riscv-vector-builtins-shapes.cc b/gcc/config/riscv/riscv-vector-builtins-shapes.cc
index 7f983e82370..a3ffa92e967 100644
--- a/gcc/config/riscv/riscv-vector-builtins-shapes.cc
+++ b/gcc/config/riscv/riscv-vector-builtins-shapes.cc
@@ -102,7 +102,7 @@ build_all (function_builder &b, const function_group_info &group)
 
 #define BASE_NAME_MAX_LEN 16
 
-/* Base class for for build.  */
+/* Base class for build.  */
 struct build_base : public function_shape
 {
   void build (function_builder &b,
diff --git a/gcc/config/riscv/riscv-vector-costs.cc b/gcc/config/riscv/riscv-vector-costs.cc
index 5ceb313c118..d27bb68a7b9 100644
--- a/gcc/config/riscv/riscv-vector-costs.cc
+++ b/gcc/config/riscv/riscv-vector-costs.cc
@@ -1170,7 +1170,7 @@ costs::add_stmt_cost (int count, vect_cost_for_stmt kind,
 
 /* For some target specific vectorization cost which can't be handled per stmt,
    we check the requisite conditions and adjust the vectorization cost
-   accordingly if satisfied.  One typical example is to model model and adjust
+   accordingly if satisfied.  One typical example is to model and adjust
    loop_len cost for known_lt (NITERS, VF).  */
 
 void
diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc
index 410ccdf597f..02b34cc060a 100644
--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -7224,7 +7224,7 @@ maybe_warn_about_constant_value (location_t loc, tree decl)
    in bytes.  If COOKIE_SIZE is NULL, return array type
    ELT_TYPE[FULL_SIZE / sizeof(ELT_TYPE)], otherwise return
    struct { size_t[COOKIE_SIZE/sizeof(size_t)]; ELT_TYPE[N]; }
-   where N is is computed such that the size of the struct fits into FULL_SIZE.
+   where N is computed such that the size of the struct fits into FULL_SIZE.
    If ARG_SIZE is non-NULL, it is the first argument to the new operator.
    It should be passed if ELT_TYPE is zero sized type in which case FULL_SIZE
    will be also 0 and so it is not possible to determine the actual array
diff --git a/gcc/cp/cp-tree.def b/gcc/cp/cp-tree.def
index 6bf2ee82c4c..3a7ac29636d 100644
--- a/gcc/cp/cp-tree.def
+++ b/gcc/cp/cp-tree.def
@@ -567,7 +567,7 @@ DEFTREECODE (CO_YIELD_EXPR, "co_yield", tcc_expression, 2)
 /* The co_return expression is used to support coroutines.
 
    Op0 is the original expr, can be void (for use in diagnostics)
-   Op1 is the promise return_xxxx call for for the expression given. */
+   Op1 is the promise return_xxxx call for the expression given. */
 
 DEFTREECODE (CO_RETURN_EXPR, "co_return", tcc_statement, 2)
 
diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 6134187c5db..50d3ad35b61 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -45273,7 +45273,7 @@ substitute_in_tree (tree *context, tree orig, tree repl, bool flatten)
 }
 
 /* Walker to patch up the BLOCK_NODE hierarchy after the above surgery.
-   *DP is is the parent block.  */
+   *DP is the parent block.  */
 
 static tree
 fixup_blocks_walker (tree *tp, int *walk_subtrees, void *dp)
diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index 1425d6116d0..bf4b89d8413 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -25503,7 +25503,7 @@ more_specialized_fn (tree pat1, tree pat2, int len)
   if (DECL_STATIC_FUNCTION_P (decl1) || DECL_STATIC_FUNCTION_P (decl2))
     {
       /* Note C++20 DR2445 extended the above to static member functions, but
-	 I think think the old G++ behavior of just skipping the object
+	 I think the old G++ behavior of just skipping the object
 	 parameter when comparing to a static member function was better, so
 	 let's stick with that for now.  This is CWG2834.  --jason 2023-12 */
       if (DECL_OBJECT_MEMBER_FUNCTION_P (decl1))
@@ -30564,7 +30564,7 @@ type_targs_deducible_from (tree tmpl, tree type)
 
   /* Maybe add in default template args.  This seems like a flaw in the
      specification in terms of partial specialization, since it says the
-     partial specialization has the the template parameter list of A, but a
+     partial specialization has the template parameter list of A, but a
      partial specialization can't have default targs.  */
   targs = coerce_template_parms (tparms, targs, tmpl, tf_none);
   if (targs == error_mark_node)
diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
index 0015ff4fb62..db0449b7786 100644
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -3895,7 +3895,7 @@ finish_template_decl (tree parms)
 //      typename pair<T, U>::first_type void f(T, U);
 //
 // Here, it is unlikely that there is a partial specialization of
-// pair constrained for for Integral and Floating_point arguments.
+// pair constrained for Integral and Floating_point arguments.
 //
 // The general rule is: if a constrained specialization with matching
 // constraints is found return that type. Also note that if TYPE is not a
@@ -10692,7 +10692,7 @@ finish_omp_for (location_t locus, enum tree_code code, tree declv,
 	 initializer is a binding of the iteration variable, save
 	 that location.  Any of these locations in the initialization clause
 	 for the current nested loop are better than using the argument locus,
-	 that points to the "for" of the the outermost loop in the nest.  */
+	 that points to the "for" of the outermost loop in the nest.  */
       if (init && EXPR_HAS_LOCATION (init))
 	elocus = EXPR_LOCATION (init);
       else if (decl && INDIRECT_REF_P (decl) && EXPR_HAS_LOCATION (decl))
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 0b1230b7bc3..5d5e70c3033 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -11710,7 +11710,7 @@ By default the analyzer attempts to reconstruct the original function
 frames, and to emit events showing the inlined calls.
 
 With @option{-fno-analyzer-undo-inlining} this attempt to reconstruct
-the original frame information can be be disabled, which may be of help
+the original frame information can be disabled, which may be of help
 when debugging issues in the analyzer.
 
 @item -fanalyzer-verbose-edges
@@ -25759,7 +25759,7 @@ Outputs pseudo-c assembly dialect.
 @item -minline-memops-threshold=@var{bytes}
 Specifies a size threshold in bytes at or below which memmove, memcpy
 and memset shall always be expanded inline.  Operations dealing with
-sizes larger than this threshold would have to be be implemented using
+sizes larger than this threshold would have to be implemented using
 a library call instead of being expanded inline, but since BPF doesn't
 allow libcalls, exceeding this threshold results in a compile-time
 error.  The default is @samp{1024} bytes.
diff --git a/gcc/doc/options.texi b/gcc/doc/options.texi
index 01f3acf79e8..a8b3a3a0f4c 100644
--- a/gcc/doc/options.texi
+++ b/gcc/doc/options.texi
@@ -422,9 +422,9 @@ The option is the inverse of another option that has the
 the options-processing script will declare @code{TARGET_@var{thisname}},
 @code{TARGET_@var{name}_P} and @code{TARGET_@var{name}_OPTS_P} macros:
 @code{TARGET_@var{thisname}} is 1 when the option is active and 0 otherwise,
-@code{TARGET_@var{name}_P} is similar to @code{TARGET_@var{name}} but take an
-argument as @samp{target_flags}, and and @code{TARGET_@var{name}_OPTS_P} also
-similar to @code{TARGET_@var{name}} but take an argument as @code{gcc_options}.
+@code{TARGET_@var{name}_P} is similar to @code{TARGET_@var{name}} but takes an
+argument as @samp{target_flags}, and @code{TARGET_@var{name}_OPTS_P} is also
+similar to @code{TARGET_@var{name}} but takes an argument as @code{gcc_options}.
 
 @item Enum(@var{name})
 The option's argument is a string from the set of strings associated
diff --git a/gcc/expr.cc b/gcc/expr.cc
index 8a1875d7809..d4414e242cb 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -392,7 +392,7 @@ convert_mode_scalar (rtx to, rtx from, int unsignedp)
 		 BFmode -> SFmode -> HFmode conversion where SFmode
 		 has superset of BFmode values.  We don't need
 		 to handle sNaNs by raising exception and turning
-		 into into qNaN though, as that can be done in the
+		 it into qNaN though, as that can be done in the
 		 SFmode -> HFmode conversion too.  */
 	      rtx temp = gen_reg_rtx (SFmode);
 	      int save_flag_finite_math_only = flag_finite_math_only;
diff --git a/gcc/function.h b/gcc/function.h
index 419d9ffcd0c..c0ba6cc1531 100644
--- a/gcc/function.h
+++ b/gcc/function.h
@@ -271,7 +271,7 @@ struct GTY(()) function {
   htab_t GTY((skip)) value_histograms;
 
   /* Annotated gconds so that basic conditions in the same expression map to
-     the same same uid.  This is used for condition coverage.  */
+     the same uid.  This is used for condition coverage.  */
   hash_map <gcond*, unsigned> *GTY((skip)) cond_uids;
 
   /* For function.cc.  */
diff --git a/gcc/gcov.cc b/gcc/gcov.cc
index fd4a5cd331d..0d4ef14e6c9 100644
--- a/gcc/gcov.cc
+++ b/gcc/gcov.cc
@@ -2567,7 +2567,7 @@ add_branch_counts (coverage_info *coverage, const arc_info *arc)
     }
 }
 
-/* Increment totals in COVERAGE according to to block BLOCK.  */
+/* Increment totals in COVERAGE according to block BLOCK.  */
 
 static void
 add_condition_counts (coverage_info *coverage, const block_info *block)
diff --git a/gcc/gimple-range-phi.cc b/gcc/gimple-range-phi.cc
index 01900a35b32..c679e4ed7f2 100644
--- a/gcc/gimple-range-phi.cc
+++ b/gcc/gimple-range-phi.cc
@@ -325,7 +325,7 @@ phi_analyzer::operator[] (tree name)
   return m_tab[v];
 }
 
-// Process phi node PHI to see if it it part of a group.
+// Process phi node PHI to see if it is part of a group.
 
 void
 phi_analyzer::process_phi (gphi *phi)
diff --git a/gcc/jit/docs/topics/expressions.rst b/gcc/jit/docs/topics/expressions.rst
index c3f4f61eb06..d83d95fe9e0 100644
--- a/gcc/jit/docs/topics/expressions.rst
+++ b/gcc/jit/docs/topics/expressions.rst
@@ -238,7 +238,7 @@ Constructor expressions
    The fields in ``fields`` need to be the same objects that were used
    to create the struct.
 
-   Each value has to have have the same unqualified type as the field
+   Each value has to have the same unqualified type as the field
    it is applied to.
 
    A NULL value element  in ``values`` is a shorthand for zero initialization
diff --git a/gcc/mode-switching.cc b/gcc/mode-switching.cc
index a145b77397d..9041838a791 100644
--- a/gcc/mode-switching.cc
+++ b/gcc/mode-switching.cc
@@ -585,7 +585,7 @@ forward_transfer (int bb_index)
   return true;
 }
 
-/* A backwards confluence function.  Update the the bb_info single_succ
+/* A backwards confluence function.  Update the bb_info single_succ
    field for E's source block, based on changes to E's destination block.
    At the end of the dataflow problem, single_succ is the single mode
    that all successors require (directly or indirectly), or no_mode
diff --git a/gcc/rtl-ssa/accesses.h b/gcc/rtl-ssa/accesses.h
index c57b8a8b7b5..7d2916d00c2 100644
--- a/gcc/rtl-ssa/accesses.h
+++ b/gcc/rtl-ssa/accesses.h
@@ -358,7 +358,7 @@ public:
   use_info *next_any_insn_use () const;
 
   // Return the next use by a debug instruction, or null if none.
-  // This is only valid if if is_in_debug_insn ().
+  // This is only valid if is_in_debug_insn ().
   use_info *next_debug_insn_use () const;
 
   // Return the previous use by a phi node in the list, or null if none.
diff --git a/gcc/tree-profile.cc b/gcc/tree-profile.cc
index 33ff550a7bc..f9d727b3111 100644
--- a/gcc/tree-profile.cc
+++ b/gcc/tree-profile.cc
@@ -390,7 +390,7 @@ condition_uid (struct function *fn, basic_block b)
    |/ \
    T   F
 
-   T has has multiple incoming edges and is the outcome of a short circuit,
+   T has multiple incoming edges and is the outcome of a short circuit,
    with top = a, bot = b.  The top node (a) is masked when the edge (b, T) is
    taken.
 
@@ -437,7 +437,7 @@ condition_uid (struct function *fn, basic_block b)
    The masking table is represented as two bitfields per term in the expression
    with the index corresponding to the term in the Boolean expression.
    a || b && c becomes the term vector [a b c] and the masking table [a[0]
-   a[1] b[0] ...].  The kth bit of a masking vector is set if the the kth term
+   a[1] b[0] ...].  The kth bit of a masking vector is set if the kth term
    is masked by taking the edge.
 
    The out masks are in uint64_t (the practical maximum for gcov_type_node for
diff --git a/gcc/tree-ssa-phiopt.cc b/gcc/tree-ssa-phiopt.cc
index 6a71165a132..d1746c4b468 100644
--- a/gcc/tree-ssa-phiopt.cc
+++ b/gcc/tree-ssa-phiopt.cc
@@ -1251,7 +1251,7 @@ value_replacement (basic_block cond_bb, basic_block middle_bb,
 	     _3 = i_6 != 0;
 	     Here, carg is 4, oarg is 6, crhs is 0, and because
 	     (4 != 0) == (6 != 0), we don't care if i_6 is 4 or 6, both
-	     have the same outcome.  So, can can optimize this to:
+	     have the same outcome.  So, we can optimize this to:
 	     _3 = i_2(D) != 0;
 	     If the single imm use of phi result >, >=, < or <=, similarly
 	     we can check if both carg and oarg compare the same against
diff --git a/gcc/tree-ssa-sccvn.cc b/gcc/tree-ssa-sccvn.cc
index 93649895056..02c3bd5f538 100644
--- a/gcc/tree-ssa-sccvn.cc
+++ b/gcc/tree-ssa-sccvn.cc
@@ -5979,7 +5979,7 @@ visit_phi (gimple *phi, bool *inserted, bool backedges_varying_p)
   if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (PHI_RESULT (phi)))
     return set_ssa_val_to (PHI_RESULT (phi), PHI_RESULT (phi));
 
-  /* We track whether a PHI was CSEd to to avoid excessive iterations
+  /* We track whether a PHI was CSEd to avoid excessive iterations
      that would be necessary only because the PHI changed arguments
      but not value.  */
   if (!inserted)
diff --git a/gcc/tree-vrp.cc b/gcc/tree-vrp.cc
index b0f21e3aa60..a36c08f469a 100644
--- a/gcc/tree-vrp.cc
+++ b/gcc/tree-vrp.cc
@@ -131,7 +131,7 @@ remove_unreachable::maybe_register (gimple *s)
     m_list.safe_push (std::make_pair (e->src->index, e->dest->index));
 }
 
-// Return true if all uses of NAME are dominated by by block BB.  1 use
+// Return true if all uses of NAME are dominated by block BB.  1 use
 // is allowed in block BB, This is one we hope to remove.
 // ie
 //  _2 = _1 & 7;
diff --git a/gcc/value-range.cc b/gcc/value-range.cc
index cb12fa3a30b..70375f7abf9 100644
--- a/gcc/value-range.cc
+++ b/gcc/value-range.cc
@@ -1886,7 +1886,7 @@ irange_bitmask::adjust_range (irange &r) const
     }
 }
 
-// If the the mask can be trivially converted to a range, do so and
+// If the mask can be trivially converted to a range, do so and
 // return TRUE.
 
 bool
diff --git a/gcc/vr-values.cc b/gcc/vr-values.cc
index 3ccb77d28be..a7e291a16e5 100644
--- a/gcc/vr-values.cc
+++ b/gcc/vr-values.cc
@@ -167,7 +167,7 @@ check_for_binary_op_overflow (range_query *query,
   return true;
 }
 
-/* Set INIT, STEP, and DIRECTION the the corresponding values of NAME
+/* Set INIT, STEP, and DIRECTION to the corresponding values of NAME
    within LOOP, and return TRUE.  Otherwise return FALSE, and set R to
    the conservative range of NAME within the loop.  */