Remove quite obvious dead assignments.

2019-06-27  Martin Liska  <mliska@suse.cz>

	* asan.c (asan_emit_allocas_unpoison): Remove obviously
	dead assignments.
	* bt-load.c (move_btr_def): Likewise.
	* builtins.c (expand_builtin_apply_args_1): Likewise.
	(expand_builtin_apply): Likewise.
	* cfgexpand.c (expand_asm_stmt): Likewise.
	(construct_init_block): Likewise.
	* cfghooks.c (verify_flow_info): Likewise.
	* cfgloopmanip.c (remove_path): Likewise.
	* cfgrtl.c (rtl_verify_bb_layout): Likewise.
	* cgraph.c (cgraph_node::set_pure_flag): Likewise.
	* combine.c (simplify_if_then_else): Likewise.
	* config/i386/i386.c (ix86_setup_incoming_vararg_bounds): Likewise.
	(choose_basereg): Likewise.
	(ix86_expand_prologue): Likewise.
	(ix86_preferred_output_reload_class): Likewise.
	* cselib.c (cselib_record_sets): Likewise.
	* df-scan.c (df_scan_alloc): Likewise.
	* dojump.c (do_jump_by_parts_greater_rtx): Likewise.
	* early-remat.c (early_remat::record_equiv_candidates): Likewise.
	* emit-rtl.c (try_split): Likewise.
	* graphite-scop-detection.c (assign_parameter_index_in_region): Likewise.
	* ipa-cp.c (cgraph_edge_brings_all_agg_vals_for_node): Likewise.
	* ira-color.c (setup_profitable_hard_regs): Likewise.
	* ira.c (rtx_moveable_p): Likewise.
	* lra-eliminations.c (eliminate_regs_in_insn): Likewise.
	* read-rtl.c (read_subst_mapping): Likewise.
	* regrename.c (scan_rtx): Likewise.
	* reorg.c (fill_slots_from_thread): Likewise.
	* tree-inline.c (tree_function_versioning): Likewise.
	* tree-ssa-reassoc.c (optimize_ops_list): Likewise.
	* tree-ssa-sink.c (statement_sink_location): Likewise.
	* tree-ssa-threadedge.c (thread_across_edge): Likewise.
	* tree-vect-loop.c (vect_get_loop_niters): Likewise.
	(vect_create_epilog_for_reduction): Likewise.
	* tree.c (build_nonstandard_integer_type): Likewise.
2019-06-27  Martin Liska  <mliska@suse.cz>

	* class.c (adjust_clone_args): Remove obviously
	dead assignments.
	(dump_class_hierarchy_r): Likewise.
	* decl.c (check_initializer): Likewise.
	* parser.c (cp_parser_lambda_expression): Likewise.
	* pt.c (unify_bound_ttp_args): Likewise.
	(convert_template_argument): Likewise.
	* rtti.c (build_headof): Likewise.
	* typeck.c (convert_for_initialization): Likewise.
2019-06-27  Martin Liska  <mliska@suse.cz>

	* libgcov-driver-system.c (gcov_exit_open_gcda_file): Remove obviously
	dead assignments.
	* libgcov-util.c: Likewise.

From-SVN: r272744

7 files changed, 17 insertions, 13 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 9d89ccb..8314b97 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,15 @@
+2019-06-27  Martin Liska  <mliska@suse.cz>
+
+	* class.c (adjust_clone_args): Remove obviously
+	dead assignments.
+	(dump_class_hierarchy_r): Likewise.
+	* decl.c (check_initializer): Likewise.
+	* parser.c (cp_parser_lambda_expression): Likewise.
+	* pt.c (unify_bound_ttp_args): Likewise.
+	(convert_template_argument): Likewise.
+	* rtti.c (build_headof): Likewise.
+	* typeck.c (convert_for_initialization): Likewise.
+
 2019-06-25  Jason Merrill  <jason@redhat.com>
 
 	PR c++/70462 - unnecessary base ctor variant with final.
diff --git a/gcc/cp/class.c b/gcc/cp/class.c
index a679e65..18e7db0 100644
--- a/gcc/cp/class.c
+++ b/gcc/cp/class.c
@@ -4718,8 +4718,6 @@ adjust_clone_args (tree decl)
       tree orig_decl_parms = TYPE_ARG_TYPES (TREE_TYPE (decl));
       tree decl_parms, clone_parms;
 
-      clone_parms = orig_clone_parms;
-
       /* Skip the 'this' parameter.  */
       orig_clone_parms = TREE_CHAIN (orig_clone_parms);
       orig_decl_parms = TREE_CHAIN (orig_decl_parms);
@@ -8549,7 +8547,6 @@ dump_class_hierarchy_r (FILE *stream,
   tree base_binfo;
   int i;
 
-  indented = maybe_indent_hierarchy (stream, indent, 0);
   fprintf (stream, "%s (0x" HOST_WIDE_INT_PRINT_HEX ") ",
 	   type_as_string (BINFO_TYPE (binfo), TFF_PLAIN_IDENTIFIER),
 	   (HOST_WIDE_INT) (uintptr_t) binfo);
@@ -8570,7 +8567,6 @@ dump_class_hierarchy_r (FILE *stream,
     fprintf (stream, " virtual");
   fprintf (stream, "\n");
 
-  indented = 0;
   if (BINFO_PRIMARY_P (binfo))
     {
       indented = maybe_indent_hierarchy (stream, indent + 3, indented);
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 96cd484..bb9d19a 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -6401,7 +6401,7 @@ build_aggr_init_full_exprs (tree decl, tree init, int flags)
 static tree
 check_initializer (tree decl, tree init, int flags, vec<tree, va_gc> **cleanups)
 {
-  tree type = TREE_TYPE (decl);
+  tree type;
   tree init_code = NULL;
   tree core_type;
 
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 4d46cb3..0a3edb3 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -10478,7 +10478,7 @@ cp_parser_lambda_expression (cp_parser* parser)
     if (ok)
       maybe_add_lambda_conv_op (type);
 
-    type = finish_struct (type, /*attributes=*/NULL_TREE);
+    finish_struct (type, /*attributes=*/NULL_TREE);
 
     parser->num_template_parameter_lists = saved_num_template_parameter_lists;
     parser->in_statement = in_statement;
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 00e4364..cc306fc 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -7457,8 +7457,7 @@ unify_bound_ttp_args (tree tparms, tree targs, tree parm, tree& arg,
     {
       /* In keeping with P0522R0, adjust P's template arguments
 	 to apply to A's template; then flatten it again.  */
-      tree nparmvec = parmvec;
-      nparmvec = coerce_ttp_args_for_tta (arg, parmvec, tf_none);
+      tree nparmvec = coerce_ttp_args_for_tta (arg, parmvec, tf_none);
       nparmvec = expand_template_argument_pack (nparmvec);
 
       if (unify (tparms, targs, nparmvec, argvec,
@@ -7885,7 +7884,6 @@ convert_template_argument (tree parm,
 	 invalid, but static members are OK.  In any
 	 case, grab the underlying fields/functions
 	 and issue an error later if required.  */
-      orig_arg = TREE_VALUE (arg);
       TREE_TYPE (arg) = unknown_type_node;
     }
 
diff --git a/gcc/cp/rtti.c b/gcc/cp/rtti.c
index ef78564..eb1b062 100644
--- a/gcc/cp/rtti.c
+++ b/gcc/cp/rtti.c
@@ -209,8 +209,8 @@ build_headof (tree exp)
   offset = build_vtbl_ref (cp_build_fold_indirect_ref (exp),
                            index);
 
-  type = cp_build_qualified_type (ptr_type_node,
-				  cp_type_quals (TREE_TYPE (exp)));
+  cp_build_qualified_type (ptr_type_node,
+			   cp_type_quals (TREE_TYPE (exp)));
   return fold_build_pointer_plus (exp, offset);
 }
 
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index 550064c..dd76ebe 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -9189,8 +9189,6 @@ convert_for_initialization (tree exp, tree type, tree rhs, int flags,
   if (exp == error_mark_node)
     return error_mark_node;
 
-  rhstype = non_reference (rhstype);
-
   type = complete_type (type);
 
   if (DIRECT_INIT_EXPR_P (type, rhs))