Remove COPY_HARD_REG_SET

This patch replaces "COPY_HARD_REG_SET (x, y)" with "x = y".

2019-09-09  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* hard-reg-set.h (COPY_HARD_REG_SET): Delete.
	* caller-save.c (save_call_clobbered_regs): Use assignment instead
	of COPY_HARD_REG_SET.
	* config/epiphany/epiphany.c (epiphany_compute_frame_size): Likewise.
	(epiphany_conditional_register_usage): Likewise.
	* config/frv/frv.c (frv_ifcvt_modify_tests): Likewise.
	* config/gcn/gcn.c (gcn_md_reorg): Likewise.
	* config/ia64/ia64.c (ia64_compute_frame_size): Likewise.
	* config/m32c/m32c.c (m32c_register_move_cost): Likewise.
	* config/m68k/m68k.c (m68k_conditional_register_usage): Likewise.
	* config/mips/mips.c (mips_class_max_nregs): Likewise.
	* config/pdp11/pdp11.c (pdp11_conditional_register_usage): Likewise.
	* config/rs6000/rs6000.c (rs6000_register_move_cost): Likewise.
	* config/sh/sh.c (output_stack_adjust): Likewise.
	* final.c (collect_fn_hard_reg_usage): Likewise.
	(get_call_reg_set_usage): Likewise.
	* ira-build.c (ira_create_object, remove_low_level_allocnos)
	(ira_flattening): Likewise.
	* ira-color.c (add_allocno_hard_regs, add_allocno_hard_regs_to_forest)
	(setup_left_conflict_sizes_p, setup_profitable_hard_regs)
	(get_conflict_and_start_profitable_regs, allocno_reload_assign)
	(ira_reassign_pseudos): Likewise.
	* ira-conflicts.c (print_allocno_conflicts): Likewise.
	(ira_build_conflicts): Likewise.
	* ira-costs.c (restrict_cost_classes): Likewise.
	(setup_regno_cost_classes_by_aclass): Likewise.
	* ira.c (setup_class_hard_regs, setup_alloc_regs): Likewise.
	(setup_reg_subclasses, setup_class_subset_and_memory_move_costs)
	(setup_stack_reg_pressure_class, setup_pressure_classes)
	(setup_allocno_and_important_classes, setup_class_translate_array)
	(setup_reg_class_relations, setup_prohibited_class_mode_regs)
	(ira_setup_eliminable_regset): Likewise.
	* lra-assigns.c (find_hard_regno_for_1): Likewise.
	(setup_live_pseudos_and_spill_after_risky_transforms): Likewise.
	* lra-constraints.c (prohibited_class_reg_set_mode_p): Likewise.
	(process_alt_operands, inherit_in_ebb): Likewise.
	* lra-lives.c (process_bb_lives): Likewise.
	* lra-spills.c (assign_spill_hard_regs): Likewise.
	* lra.c (lra): Likewise.
	* mode-switching.c (new_seginfo): Likewise.
	* postreload.c (reload_combine): Likewise.
	* reg-stack.c (straighten_stack): Likewise.
	* reginfo.c (save_register_info, restore_register_info): Likewise.
	(init_reg_sets_1, record_subregs_of_mode): Likewise
	* regrename.c (create_new_chain, rename_chains): Likewise.
	* reload1.c (order_regs_for_reload, find_reg): Likewise.
	(find_reload_regs): Likewise.
	* resource.c (find_dead_or_set_registers): Likewise.
	(mark_target_live_regs): Likewise.
	* sel-sched.c (mark_unavailable_hard_regs): Likewise.

From-SVN: r275528

32 files changed, 175 insertions, 145 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 338f4041dad..a3238884c46 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,58 @@
 2019-09-09  Richard Sandiford  <richard.sandiford@arm.com>
 
+	* hard-reg-set.h (COPY_HARD_REG_SET): Delete.
+	* caller-save.c (save_call_clobbered_regs): Use assignment instead
+	of COPY_HARD_REG_SET.
+	* config/epiphany/epiphany.c (epiphany_compute_frame_size): Likewise.
+	(epiphany_conditional_register_usage): Likewise.
+	* config/frv/frv.c (frv_ifcvt_modify_tests): Likewise.
+	* config/gcn/gcn.c (gcn_md_reorg): Likewise.
+	* config/ia64/ia64.c (ia64_compute_frame_size): Likewise.
+	* config/m32c/m32c.c (m32c_register_move_cost): Likewise.
+	* config/m68k/m68k.c (m68k_conditional_register_usage): Likewise.
+	* config/mips/mips.c (mips_class_max_nregs): Likewise.
+	* config/pdp11/pdp11.c (pdp11_conditional_register_usage): Likewise.
+	* config/rs6000/rs6000.c (rs6000_register_move_cost): Likewise.
+	* config/sh/sh.c (output_stack_adjust): Likewise.
+	* final.c (collect_fn_hard_reg_usage): Likewise.
+	(get_call_reg_set_usage): Likewise.
+	* ira-build.c (ira_create_object, remove_low_level_allocnos)
+	(ira_flattening): Likewise.
+	* ira-color.c (add_allocno_hard_regs, add_allocno_hard_regs_to_forest)
+	(setup_left_conflict_sizes_p, setup_profitable_hard_regs)
+	(get_conflict_and_start_profitable_regs, allocno_reload_assign)
+	(ira_reassign_pseudos): Likewise.
+	* ira-conflicts.c (print_allocno_conflicts): Likewise.
+	(ira_build_conflicts): Likewise.
+	* ira-costs.c (restrict_cost_classes): Likewise.
+	(setup_regno_cost_classes_by_aclass): Likewise.
+	* ira.c (setup_class_hard_regs, setup_alloc_regs): Likewise.
+	(setup_reg_subclasses, setup_class_subset_and_memory_move_costs)
+	(setup_stack_reg_pressure_class, setup_pressure_classes)
+	(setup_allocno_and_important_classes, setup_class_translate_array)
+	(setup_reg_class_relations, setup_prohibited_class_mode_regs)
+	(ira_setup_eliminable_regset): Likewise.
+	* lra-assigns.c (find_hard_regno_for_1): Likewise.
+	(setup_live_pseudos_and_spill_after_risky_transforms): Likewise.
+	* lra-constraints.c (prohibited_class_reg_set_mode_p): Likewise.
+	(process_alt_operands, inherit_in_ebb): Likewise.
+	* lra-lives.c (process_bb_lives): Likewise.
+	* lra-spills.c (assign_spill_hard_regs): Likewise.
+	* lra.c (lra): Likewise.
+	* mode-switching.c (new_seginfo): Likewise.
+	* postreload.c (reload_combine): Likewise.
+	* reg-stack.c (straighten_stack): Likewise.
+	* reginfo.c (save_register_info, restore_register_info): Likewise.
+	(init_reg_sets_1, record_subregs_of_mode): Likewise
+	* regrename.c (create_new_chain, rename_chains): Likewise.
+	* reload1.c (order_regs_for_reload, find_reg): Likewise.
+	(find_reload_regs): Likewise.
+	* resource.c (find_dead_or_set_registers): Likewise.
+	(mark_target_live_regs): Likewise.
+	* sel-sched.c (mark_unavailable_hard_regs): Likewise.
+
+2019-09-09  Richard Sandiford  <richard.sandiford@arm.com>
+
 	* rtl.h (CALL_INSN_FUNCTION_USAGE): Document what SETs mean.
 	(note_pattern_stores): Declare.
 	(note_stores): Take an rtx_insn *.
diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index 5edbcc9c2ee..03a9b333bdc 100644
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -775,7 +775,7 @@ save_call_clobbered_regs (void)
 
 	      if (code == JUMP_INSN)
 		/* Restore all registers if this is a JUMP_INSN.  */
-		COPY_HARD_REG_SET (referenced_regs, hard_regs_saved);
+		referenced_regs = hard_regs_saved;
 	      else
 		{
 		  CLEAR_HARD_REG_SET (referenced_regs);
diff --git a/gcc/config/epiphany/epiphany.c b/gcc/config/epiphany/epiphany.c
index cc51cfaaf98..c2e321580e2 100644
--- a/gcc/config/epiphany/epiphany.c
+++ b/gcc/config/epiphany/epiphany.c
@@ -1248,7 +1248,7 @@ epiphany_compute_frame_size (int size /* # of var. bytes allocated.  */)
   current_frame_info.var_size     = var_size;
   current_frame_info.args_size    = args_size;
   current_frame_info.reg_size	  = reg_size;
-  COPY_HARD_REG_SET (current_frame_info.gmask, gmask);
+  current_frame_info.gmask	  = gmask;
   current_frame_info.first_slot		= first_slot;
   current_frame_info.last_slot		= last_slot;
   current_frame_info.first_slot_offset	= first_slot_offset;
@@ -2240,8 +2240,7 @@ epiphany_conditional_register_usage (void)
     }
   if (!TARGET_PREFER_SHORT_INSN_REGS)
     CLEAR_HARD_REG_SET (reg_class_contents[SHORT_INSN_REGS]);
-  COPY_HARD_REG_SET (reg_class_contents[SIBCALL_REGS],
-		     reg_class_contents[GENERAL_REGS]);
+  reg_class_contents[SIBCALL_REGS] = reg_class_contents[GENERAL_REGS];
   /* It would be simpler and quicker if we could just use
      AND_COMPL_HARD_REG_SET, alas, call_used_reg_set is yet uninitialized;
      it is set up later by our caller.  */
diff --git a/gcc/config/frv/frv.c b/gcc/config/frv/frv.c
index 6008e9a59ad..7fc8068b6e4 100644
--- a/gcc/config/frv/frv.c
+++ b/gcc/config/frv/frv.c
@@ -5201,7 +5201,7 @@ frv_ifcvt_modify_tests (ce_if_block *ce_info, rtx *p_true, rtx *p_false)
      not fixed.  However, allow the ICC/ICR temporary registers to be allocated
      if we did not need to use them in reloading other registers.  */
   memset (&tmp_reg->regs, 0, sizeof (tmp_reg->regs));
-  COPY_HARD_REG_SET (tmp_reg->regs, call_used_reg_set);
+  tmp_reg->regs = call_used_reg_set;
   AND_COMPL_HARD_REG_SET (tmp_reg->regs, fixed_reg_set);
   SET_HARD_REG_BIT (tmp_reg->regs, ICC_TEMP);
   SET_HARD_REG_BIT (tmp_reg->regs, ICR_TEMP);
diff --git a/gcc/config/gcn/gcn.c b/gcc/config/gcn/gcn.c
index cdb1c6ed794..548ab178170 100644
--- a/gcc/config/gcn/gcn.c
+++ b/gcc/config/gcn/gcn.c
@@ -4553,7 +4553,7 @@ gcn_md_reorg (void)
 	      && gcn_vmem_insn_p (itype))
 	    {
 	      HARD_REG_SET regs;
-	      COPY_HARD_REG_SET (regs, prev_insn->writes);
+	      regs = prev_insn->writes;
 	      AND_HARD_REG_SET (regs, ireads);
 	      if (hard_reg_set_intersect_p
 		  (regs, reg_class_contents[(int) SGPR_REGS]))
@@ -4583,7 +4583,7 @@ gcn_md_reorg (void)
 	      && get_attr_laneselect (insn) == LANESELECT_YES)
 	    {
 	      HARD_REG_SET regs;
-	      COPY_HARD_REG_SET (regs, prev_insn->writes);
+	      regs = prev_insn->writes;
 	      AND_HARD_REG_SET (regs, ireads);
 	      if (hard_reg_set_intersect_p
 		  (regs, reg_class_contents[(int) SGPR_REGS])
@@ -4599,7 +4599,7 @@ gcn_md_reorg (void)
 	      && itype == TYPE_VOP_DPP)
 	    {
 	      HARD_REG_SET regs;
-	      COPY_HARD_REG_SET (regs, prev_insn->writes);
+	      regs = prev_insn->writes;
 	      AND_HARD_REG_SET (regs, ireads);
 	      if (hard_reg_set_intersect_p
 		  (regs, reg_class_contents[(int) VGPR_REGS]))
@@ -4641,8 +4641,8 @@ gcn_md_reorg (void)
       back[oldest].insn = insn;
       back[oldest].unit = iunit;
       back[oldest].delayeduse = idelayeduse;
-      COPY_HARD_REG_SET (back[oldest].writes, iwrites);
-      COPY_HARD_REG_SET (back[oldest].reads, ireads);
+      back[oldest].writes = iwrites;
+      back[oldest].reads = ireads;
       back[oldest].age = 0;
       oldest = (oldest + 1) % max_waits;
 
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 3768c8b5e54..ca69656f45c 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -2965,7 +2965,7 @@ ia64_compute_frame_size (HOST_WIDE_INT size)
   current_frame_info.spill_cfa_off = pretend_args_size - 16;
   current_frame_info.spill_size = spill_size;
   current_frame_info.extra_spill_size = extra_spill_size;
-  COPY_HARD_REG_SET (current_frame_info.mask, mask);
+  current_frame_info.mask = mask;
   current_frame_info.n_spilled = n_spilled;
   current_frame_info.initialized = reload_completed;
 }
diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c
index ace00e06cab..4e1828789e9 100644
--- a/gcc/config/m32c/m32c.c
+++ b/gcc/config/m32c/m32c.c
@@ -2152,7 +2152,7 @@ m32c_register_move_cost (machine_mode mode, reg_class_t from,
   HARD_REG_SET cc;
 
 /* FIXME: pick real values, but not 2 for now.  */
-  COPY_HARD_REG_SET (cc, reg_class_contents[(int) from]);
+  cc = reg_class_contents[from];
   IOR_HARD_REG_SET (cc, reg_class_contents[(int) to]);
 
   if (mode == QImode
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 70f3e5c6f0a..fd69511ce70 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -6555,7 +6555,7 @@ m68k_conditional_register_usage (void)
   HARD_REG_SET x;
   if (!TARGET_HARD_FLOAT)
     {
-      COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]);
+      x = reg_class_contents[FP_REGS];
       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
         if (TEST_HARD_REG_BIT (x, i))
 	  fixed_regs[i] = call_used_regs[i] = 1;
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index c5389d29750..7150a79a981 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -12975,7 +12975,7 @@ mips_class_max_nregs (enum reg_class rclass, machine_mode mode)
   HARD_REG_SET left;
 
   size = 0x8000;
-  COPY_HARD_REG_SET (left, reg_class_contents[(int) rclass]);
+  left = reg_class_contents[rclass];
   if (hard_reg_set_intersect_p (left, reg_class_contents[(int) ST_REGS]))
     {
       if (mips_hard_regno_mode_ok (ST_REG_FIRST, mode))
diff --git a/gcc/config/pdp11/pdp11.c b/gcc/config/pdp11/pdp11.c
index 62a1b2723b2..2d3b94ba9ef 100644
--- a/gcc/config/pdp11/pdp11.c
+++ b/gcc/config/pdp11/pdp11.c
@@ -2213,7 +2213,7 @@ pdp11_conditional_register_usage (void)
   HARD_REG_SET x;
   if (!TARGET_FPU)
     {
-      COPY_HARD_REG_SET (x, reg_class_contents[(int)FPU_REGS]);
+      x = reg_class_contents[FPU_REGS];
       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ )
        if (TEST_HARD_REG_BIT (x, i))
 	fixed_regs[i] = call_used_regs[i] = 1;
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index e044c6ec7f1..8193c6beb2b 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -21107,9 +21107,9 @@ rs6000_register_move_cost (machine_mode mode,
      Do this first so we give best-case answers for union classes
      containing both gprs and vsx regs.  */
   HARD_REG_SET to_vsx, from_vsx;
-  COPY_HARD_REG_SET (to_vsx, reg_class_contents[to]);
+  to_vsx = reg_class_contents[to];
   AND_HARD_REG_SET (to_vsx, reg_class_contents[VSX_REGS]);
-  COPY_HARD_REG_SET (from_vsx, reg_class_contents[from]);
+  from_vsx = reg_class_contents[from];
   AND_HARD_REG_SET (from_vsx, reg_class_contents[VSX_REGS]);
   if (!hard_reg_set_empty_p (to_vsx)
       && !hard_reg_set_empty_p (from_vsx)
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 04c56aa111b..d1af5802840 100644
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -6708,7 +6708,7 @@ output_stack_adjust (int size, rtx reg, int epilogue_p,
 	  if (temp < 0 && ! current_function_interrupt && epilogue_p >= 0)
 	    {
 	      HARD_REG_SET temps;
-	      COPY_HARD_REG_SET (temps, call_used_reg_set);
+	      temps = call_used_reg_set;
 	      AND_COMPL_HARD_REG_SET (temps, call_fixed_reg_set);
 	      if (epilogue_p > 0)
 		{
@@ -6743,7 +6743,7 @@ output_stack_adjust (int size, rtx reg, int epilogue_p,
 	    {
 	      HARD_REG_SET temps;
 
-	      COPY_HARD_REG_SET (temps, *live_regs_mask);
+	      temps = *live_regs_mask;
 	      CLEAR_HARD_REG_BIT (temps, REGNO (reg));
 	      temp = scavenge_reg (&temps);
 	    }
diff --git a/gcc/final.c b/gcc/final.c
index fefc4874b24..252b0b6105b 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -5036,7 +5036,7 @@ collect_fn_hard_reg_usage (void)
   node = cgraph_node::rtl_info (current_function_decl);
   gcc_assert (node != NULL);
 
-  COPY_HARD_REG_SET (node->function_used_regs, function_used_regs);
+  node->function_used_regs = function_used_regs;
   node->function_used_regs_valid = 1;
 }
 
@@ -5090,12 +5090,12 @@ get_call_reg_set_usage (rtx_insn *insn, HARD_REG_SET *reg_set,
       if (node != NULL
 	  && node->function_used_regs_valid)
 	{
-	  COPY_HARD_REG_SET (*reg_set, node->function_used_regs);
+	  *reg_set = node->function_used_regs;
 	  AND_HARD_REG_SET (*reg_set, default_set);
 	  return true;
 	}
     }
-  COPY_HARD_REG_SET (*reg_set, default_set);
+  *reg_set = default_set;
   targetm.remove_extra_call_preserved_regs (insn, reg_set);
   return false;
 }
diff --git a/gcc/hard-reg-set.h b/gcc/hard-reg-set.h
index 32626bab379..3d6eef22037 100644
--- a/gcc/hard-reg-set.h
+++ b/gcc/hard-reg-set.h
@@ -83,10 +83,10 @@ struct hard_reg_set_container
    CLEAR_HARD_REG_SET and SET_HARD_REG_SET.
    These take just one argument.
 
-   Also define macros for copying hard reg sets:
-   COPY_HARD_REG_SET and COMPL_HARD_REG_SET.
-   These take two arguments TO and FROM; they read from FROM
-   and store into TO.  COMPL_HARD_REG_SET complements each bit.
+   Also define macros for copying the complement of a hard reg set:
+   COMPL_HARD_REG_SET.
+   This takes two arguments TO and FROM; it reads from FROM
+   and stores into TO.
 
    Also define macros for combining hard reg sets:
    IOR_HARD_REG_SET and AND_HARD_REG_SET.
@@ -116,7 +116,6 @@ struct hard_reg_set_container
 #define CLEAR_HARD_REG_SET(TO) ((TO) = HARD_CONST (0))
 #define SET_HARD_REG_SET(TO) ((TO) = ~ HARD_CONST (0))
 
-#define COPY_HARD_REG_SET(TO, FROM) ((TO) = (FROM))
 #define COMPL_HARD_REG_SET(TO, FROM) ((TO) = ~(FROM))
 
 #define IOR_HARD_REG_SET(TO, FROM) ((TO) |= (FROM))
@@ -186,12 +185,6 @@ SET_HARD_REG_SET (HARD_REG_SET &set)
 }
 
 inline void
-COPY_HARD_REG_SET (HARD_REG_SET &to, const_hard_reg_set from)
-{
-  to = from;
-}
-
-inline void
 COMPL_HARD_REG_SET (HARD_REG_SET &to, const_hard_reg_set from)
 {
   for (unsigned int i = 0; i < ARRAY_SIZE (to.elts); ++i)
diff --git a/gcc/ira-build.c b/gcc/ira-build.c
index c7457fa4431..1fa7a868311 100644
--- a/gcc/ira-build.c
+++ b/gcc/ira-build.c
@@ -456,8 +456,8 @@ ira_create_object (ira_allocno_t a, int subword)
   OBJECT_CONFLICT_VEC_P (obj) = false;
   OBJECT_CONFLICT_ARRAY (obj) = NULL;
   OBJECT_NUM_CONFLICTS (obj) = 0;
-  COPY_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj), ira_no_alloc_regs);
-  COPY_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj), ira_no_alloc_regs);
+  OBJECT_CONFLICT_HARD_REGS (obj) = ira_no_alloc_regs;
+  OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) = ira_no_alloc_regs;
   IOR_COMPL_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj),
 			  reg_class_contents[aclass]);
   IOR_COMPL_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
@@ -2569,8 +2569,8 @@ remove_low_level_allocnos (void)
 	  ALLOCNO_NEXT_REGNO_ALLOCNO (a) = NULL;
 	  ALLOCNO_CAP_MEMBER (a) = NULL;
 	  FOR_EACH_ALLOCNO_OBJECT (a, obj, oi)
-	    COPY_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj),
-			       OBJECT_TOTAL_CONFLICT_HARD_REGS (obj));
+	    OBJECT_CONFLICT_HARD_REGS (obj)
+	      = OBJECT_TOTAL_CONFLICT_HARD_REGS (obj);
 #ifdef STACK_REGS
 	  if (ALLOCNO_TOTAL_NO_STACK_REG_P (a))
 	    ALLOCNO_NO_STACK_REG_P (a) = true;
@@ -3108,8 +3108,8 @@ ira_flattening (int max_regno_before_emit, int ira_max_point_before_emit)
 	   flattening.  */
 	continue;
       FOR_EACH_ALLOCNO_OBJECT (a, obj, oi)
-	COPY_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
-			   OBJECT_CONFLICT_HARD_REGS (obj));
+	OBJECT_TOTAL_CONFLICT_HARD_REGS (obj)
+	  = OBJECT_CONFLICT_HARD_REGS (obj);
 #ifdef STACK_REGS
       ALLOCNO_TOTAL_NO_STACK_REG_P (a) = ALLOCNO_NO_STACK_REG_P (a);
 #endif
diff --git a/gcc/ira-color.c b/gcc/ira-color.c
index 99236994d64..fab3ce7936f 100644
--- a/gcc/ira-color.c
+++ b/gcc/ira-color.c
@@ -261,14 +261,14 @@ add_allocno_hard_regs (HARD_REG_SET set, int64_t cost)
   allocno_hard_regs_t hv;
 
   gcc_assert (! hard_reg_set_empty_p (set));
-  COPY_HARD_REG_SET (temp.set, set);
+  temp.set = set;
   if ((hv = find_hard_regs (&temp)) != NULL)
     hv->cost += cost;
   else
     {
       hv = ((struct allocno_hard_regs *)
 	    ira_allocate (sizeof (struct allocno_hard_regs)));
-      COPY_HARD_REG_SET (hv->set, set);
+      hv->set = set;
       hv->cost = cost;
       allocno_hard_regs_vec.safe_push (hv);
       insert_hard_regs (hv);
@@ -382,7 +382,7 @@ add_allocno_hard_regs_to_forest (allocno_hard_regs_node_t *roots,
 	hard_regs_node_vec.safe_push (node);
       else if (hard_reg_set_intersect_p (hv->set, node->hard_regs->set))
 	{
-	  COPY_HARD_REG_SET (temp_set, hv->set);
+	  temp_set = hv->set;
 	  AND_HARD_REG_SET (temp_set, node->hard_regs->set);
 	  hv2 = add_allocno_hard_regs (temp_set, hv->cost);
 	  add_allocno_hard_regs_to_forest (&node->first, hv2);
@@ -833,10 +833,10 @@ setup_left_conflict_sizes_p (ira_allocno_t a)
   nobj = ALLOCNO_NUM_OBJECTS (a);
   data = ALLOCNO_COLOR_DATA (a);
   subnodes = allocno_hard_regs_subnodes + data->hard_regs_subnodes_start;
-  COPY_HARD_REG_SET (profitable_hard_regs, data->profitable_hard_regs);
+  profitable_hard_regs = data->profitable_hard_regs;
   node = data->hard_regs_node;
   node_preorder_num = node->preorder_num;
-  COPY_HARD_REG_SET (node_set, node->hard_regs->set);
+  node_set = node->hard_regs->set;
   node_check_tick++;
   for (k = 0; k < nobj; k++)
     {
@@ -859,7 +859,7 @@ setup_left_conflict_sizes_p (ira_allocno_t a)
 					     ->profitable_hard_regs))
 	    continue;
 	  conflict_node = conflict_data->hard_regs_node;
-	  COPY_HARD_REG_SET (conflict_node_set, conflict_node->hard_regs->set);
+	  conflict_node_set = conflict_node->hard_regs->set;
 	  if (hard_reg_set_subset_p (node_set, conflict_node_set))
 	    temp_node = node;
 	  else
@@ -897,7 +897,7 @@ setup_left_conflict_sizes_p (ira_allocno_t a)
 	  int j, n, hard_regno;
 	  enum reg_class aclass;
 	  
-	  COPY_HARD_REG_SET (temp_set, temp_node->hard_regs->set);
+	  temp_set = temp_node->hard_regs->set;
 	  AND_HARD_REG_SET (temp_set, profitable_hard_regs);
 	  aclass = ALLOCNO_CLASS (a);
 	  for (n = 0, j = ira_class_hard_regs_num[aclass] - 1; j >= 0; j--)
@@ -1042,8 +1042,8 @@ setup_profitable_hard_regs (void)
       else
 	{
 	  mode = ALLOCNO_MODE (a);
-	  COPY_HARD_REG_SET (data->profitable_hard_regs,
-			     ira_useful_class_mode_regs[aclass][mode]);
+	  data->profitable_hard_regs
+	    = ira_useful_class_mode_regs[aclass][mode];
 	  nobj = ALLOCNO_NUM_OBJECTS (a);
 	  for (k = 0; k < nobj; k++)
 	    {
@@ -1589,20 +1589,17 @@ get_conflict_and_start_profitable_regs (ira_allocno_t a, bool retry_p,
   for (i = 0; i < nwords; i++)
     {
       obj = ALLOCNO_OBJECT (a, i);
-      COPY_HARD_REG_SET (conflict_regs[i],
-			 OBJECT_TOTAL_CONFLICT_HARD_REGS (obj));
+      conflict_regs[i] = OBJECT_TOTAL_CONFLICT_HARD_REGS (obj);
     }
   if (retry_p)
     {
-      COPY_HARD_REG_SET (*start_profitable_regs,
-			 reg_class_contents[ALLOCNO_CLASS (a)]);
+      *start_profitable_regs = reg_class_contents[ALLOCNO_CLASS (a)];
       AND_COMPL_HARD_REG_SET (*start_profitable_regs,
 			      ira_prohibited_class_mode_regs
 			      [ALLOCNO_CLASS (a)][ALLOCNO_MODE (a)]);
     }
   else
-    COPY_HARD_REG_SET (*start_profitable_regs,
-		       ALLOCNO_COLOR_DATA (a)->profitable_hard_regs);
+    *start_profitable_regs = ALLOCNO_COLOR_DATA (a)->profitable_hard_regs;
 }
 
 /* Return true if HARD_REGNO is ok for assigning to allocno A with
@@ -4387,7 +4384,7 @@ allocno_reload_assign (ira_allocno_t a, HARD_REG_SET forbidden_regs)
   for (i = 0; i < n; i++)
     {
       ira_object_t obj = ALLOCNO_OBJECT (a, i);
-      COPY_HARD_REG_SET (saved[i], OBJECT_TOTAL_CONFLICT_HARD_REGS (obj));
+      saved[i] = OBJECT_TOTAL_CONFLICT_HARD_REGS (obj);
       IOR_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj), forbidden_regs);
       if (! flag_caller_saves && ALLOCNO_CALLS_CROSSED_NUM (a) != 0)
 	IOR_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
@@ -4434,7 +4431,7 @@ allocno_reload_assign (ira_allocno_t a, HARD_REG_SET forbidden_regs)
   for (i = 0; i < n; i++)
     {
       ira_object_t obj = ALLOCNO_OBJECT (a, i);
-      COPY_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj), saved[i]);
+      OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) = saved[i];
     }
   return reg_renumber[regno] >= 0;
 }
@@ -4519,7 +4516,7 @@ ira_reassign_pseudos (int *spilled_pseudo_regs, int num,
   for (i = 0; i < num; i++)
     {
       regno = spilled_pseudo_regs[i];
-      COPY_HARD_REG_SET (forbidden_regs, bad_spill_regs);
+      forbidden_regs = bad_spill_regs;
       IOR_HARD_REG_SET (forbidden_regs, pseudo_forbidden_regs[regno]);
       IOR_HARD_REG_SET (forbidden_regs, pseudo_previous_regs[regno]);
       gcc_assert (reg_renumber[regno] < 0);
diff --git a/gcc/ira-conflicts.c b/gcc/ira-conflicts.c
index 813a6d4103c..670e5260c7a 100644
--- a/gcc/ira-conflicts.c
+++ b/gcc/ira-conflicts.c
@@ -660,14 +660,14 @@ print_allocno_conflicts (FILE * file, bool reg_p, ira_allocno_t a)
 	      putc (')', file);
 	    }
 	}
-      COPY_HARD_REG_SET (conflicting_hard_regs, OBJECT_TOTAL_CONFLICT_HARD_REGS (obj));
+      conflicting_hard_regs = OBJECT_TOTAL_CONFLICT_HARD_REGS (obj);
       AND_COMPL_HARD_REG_SET (conflicting_hard_regs, ira_no_alloc_regs);
       AND_HARD_REG_SET (conflicting_hard_regs,
 			reg_class_contents[ALLOCNO_CLASS (a)]);
       print_hard_reg_set (file, "\n;;     total conflict hard regs:",
 			  conflicting_hard_regs);
 
-      COPY_HARD_REG_SET (conflicting_hard_regs, OBJECT_CONFLICT_HARD_REGS (obj));
+      conflicting_hard_regs = OBJECT_CONFLICT_HARD_REGS (obj);
       AND_COMPL_HARD_REG_SET (conflicting_hard_regs, ira_no_alloc_regs);
       AND_HARD_REG_SET (conflicting_hard_regs,
 			reg_class_contents[ALLOCNO_CLASS (a)]);
@@ -741,7 +741,7 @@ ira_build_conflicts (void)
     CLEAR_HARD_REG_SET (temp_hard_reg_set);
   else
     {
-      COPY_HARD_REG_SET (temp_hard_reg_set, reg_class_contents[base]);
+      temp_hard_reg_set = reg_class_contents[base];
       AND_COMPL_HARD_REG_SET (temp_hard_reg_set, ira_no_alloc_regs);
       AND_HARD_REG_SET (temp_hard_reg_set, call_used_reg_set);
     }
diff --git a/gcc/ira-costs.c b/gcc/ira-costs.c
index 3d81c902005..f721c64ff7f 100644
--- a/gcc/ira-costs.c
+++ b/gcc/ira-costs.c
@@ -255,7 +255,7 @@ restrict_cost_classes (cost_classes_t full, machine_mode mode,
       /* Calculate the set of registers in CL that belong to REGS and
 	 are valid for MODE.  */
       HARD_REG_SET valid_for_cl;
-      COPY_HARD_REG_SET (valid_for_cl, reg_class_contents[cl]);
+      valid_for_cl = reg_class_contents[cl];
       AND_HARD_REG_SET (valid_for_cl, regs);
       AND_COMPL_HARD_REG_SET (valid_for_cl,
 			      ira_prohibited_class_mode_regs[cl][mode]);
@@ -343,7 +343,7 @@ setup_regno_cost_classes_by_aclass (int regno, enum reg_class aclass)
 
   if ((classes_ptr = cost_classes_aclass_cache[aclass]) == NULL)
     {
-      COPY_HARD_REG_SET (temp, reg_class_contents[aclass]);
+      temp = reg_class_contents[aclass];
       AND_COMPL_HARD_REG_SET (temp, ira_no_alloc_regs);
       /* We exclude classes from consideration which are subsets of
 	 ACLASS only if ACLASS is an uniform class.  */
@@ -356,7 +356,7 @@ setup_regno_cost_classes_by_aclass (int regno, enum reg_class aclass)
 	    {
 	      /* Exclude non-uniform classes which are subsets of
 		 ACLASS.  */
-	      COPY_HARD_REG_SET (temp2, reg_class_contents[cl]);
+	      temp2 = reg_class_contents[cl];
 	      AND_COMPL_HARD_REG_SET (temp2, ira_no_alloc_regs);
 	      if (hard_reg_set_subset_p (temp2, temp) && cl != aclass)
 		continue;
diff --git a/gcc/ira.c b/gcc/ira.c
index 66f1fc1337a..a2ebbabac36 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -471,7 +471,7 @@ setup_class_hard_regs (void)
   ira_assert (SHRT_MAX >= FIRST_PSEUDO_REGISTER);
   for (cl = (int) N_REG_CLASSES - 1; cl >= 0; cl--)
     {
-      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+      temp_hard_regset = reg_class_contents[cl];
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
       CLEAR_HARD_REG_SET (processed_hard_reg_set);
       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
@@ -514,7 +514,7 @@ setup_alloc_regs (bool use_hard_frame_p)
 #ifdef ADJUST_REG_ALLOC_ORDER
   ADJUST_REG_ALLOC_ORDER;
 #endif
-  COPY_HARD_REG_SET (no_unit_alloc_regs, fixed_nonglobal_reg_set);
+  no_unit_alloc_regs = fixed_nonglobal_reg_set;
   if (! use_hard_frame_p)
     SET_HARD_REG_BIT (no_unit_alloc_regs, HARD_FRAME_POINTER_REGNUM);
   setup_class_hard_regs ();
@@ -541,7 +541,7 @@ setup_reg_subclasses (void)
       if (i == (int) NO_REGS)
 	continue;
 
-      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[i]);
+      temp_hard_regset = reg_class_contents[i];
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
       if (hard_reg_set_empty_p (temp_hard_regset))
 	continue;
@@ -550,7 +550,7 @@ setup_reg_subclasses (void)
 	  {
 	    enum reg_class *p;
 
-	    COPY_HARD_REG_SET (temp_hard_regset2, reg_class_contents[j]);
+	    temp_hard_regset2 = reg_class_contents[j];
 	    AND_COMPL_HARD_REG_SET (temp_hard_regset2, no_unit_alloc_regs);
 	    if (! hard_reg_set_subset_p (temp_hard_regset,
 					 temp_hard_regset2))
@@ -605,9 +605,9 @@ setup_class_subset_and_memory_move_costs (void)
   for (cl = (int) N_REG_CLASSES - 1; cl >= 0; cl--)
     for (cl2 = (int) N_REG_CLASSES - 1; cl2 >= 0; cl2--)
       {
-	COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+	temp_hard_regset = reg_class_contents[cl];
 	AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-	COPY_HARD_REG_SET (temp_hard_regset2, reg_class_contents[cl2]);
+	temp_hard_regset2 = reg_class_contents[cl2];
 	AND_COMPL_HARD_REG_SET (temp_hard_regset2, no_unit_alloc_regs);
 	ira_class_subset_p[cl][cl2]
 	  = hard_reg_set_subset_p (temp_hard_regset, temp_hard_regset2);
@@ -757,7 +757,7 @@ setup_stack_reg_pressure_class (void)
     for (i = 0; i < ira_pressure_classes_num; i++)
       {
 	cl = ira_pressure_classes[i];
-	COPY_HARD_REG_SET (temp_hard_regset2, temp_hard_regset);
+	temp_hard_regset2 = temp_hard_regset;
 	AND_HARD_REG_SET (temp_hard_regset2, reg_class_contents[cl]);
 	size = hard_reg_set_size (temp_hard_regset2);
 	if (best < size)
@@ -816,7 +816,7 @@ setup_pressure_classes (void)
 		 register pressure class.  */
 	      for (m = 0; m < NUM_MACHINE_MODES; m++)
 		{
-		  COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+		  temp_hard_regset = reg_class_contents[cl];
 		  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 		  AND_COMPL_HARD_REG_SET (temp_hard_regset,
 					  ira_prohibited_class_mode_regs[cl][m]);
@@ -833,7 +833,7 @@ setup_pressure_classes (void)
 	    }
 	  curr = 0;
 	  insert_p = true;
-	  COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+	  temp_hard_regset = reg_class_contents[cl];
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 	  /* Remove so far added pressure classes which are subset of the
 	     current candidate class.  Prefer GENERAL_REGS as a pressure
@@ -845,7 +845,7 @@ setup_pressure_classes (void)
 	  for (i = 0; i < n; i++)
 	    {
 	      cl2 = pressure_classes[i];
-	      COPY_HARD_REG_SET (temp_hard_regset2, reg_class_contents[cl2]);
+	      temp_hard_regset2 = reg_class_contents[cl2];
 	      AND_COMPL_HARD_REG_SET (temp_hard_regset2, no_unit_alloc_regs);
 	      if (hard_reg_set_subset_p (temp_hard_regset, temp_hard_regset2)
 		  && (! hard_reg_set_equal_p (temp_hard_regset,
@@ -882,7 +882,7 @@ setup_pressure_classes (void)
        registers available for the allocation.  */
     CLEAR_HARD_REG_SET (temp_hard_regset);
     CLEAR_HARD_REG_SET (temp_hard_regset2);
-    COPY_HARD_REG_SET (ignore_hard_regs, no_unit_alloc_regs);
+    ignore_hard_regs = no_unit_alloc_regs;
     for (cl = 0; cl < LIM_REG_CLASSES; cl++)
       {
 	/* For some targets (like MIPS with MD_REGS), there are some
@@ -1001,12 +1001,12 @@ setup_allocno_and_important_classes (void)
      same set of hard registers.  */
   for (i = 0; i < LIM_REG_CLASSES; i++)
     {
-      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[i]);
+      temp_hard_regset = reg_class_contents[i];
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
       for (j = 0; j < n; j++)
 	{
 	  cl = classes[j];
-	  COPY_HARD_REG_SET (temp_hard_regset2, reg_class_contents[cl]);
+	  temp_hard_regset2 = reg_class_contents[cl];
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset2,
 				  no_unit_alloc_regs);
 	  if (hard_reg_set_equal_p (temp_hard_regset,
@@ -1037,13 +1037,12 @@ setup_allocno_and_important_classes (void)
   for (cl = 0; cl < N_REG_CLASSES; cl++)
     if (ira_class_hard_regs_num[cl] > 0)
       {
-	COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+	temp_hard_regset = reg_class_contents[cl];
 	AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 	set_p = false;
 	for (j = 0; j < ira_allocno_classes_num; j++)
 	  {
-	    COPY_HARD_REG_SET (temp_hard_regset2,
-			       reg_class_contents[ira_allocno_classes[j]]);
+	    temp_hard_regset2 = reg_class_contents[ira_allocno_classes[j]];
 	    AND_COMPL_HARD_REG_SET (temp_hard_regset2, no_unit_alloc_regs);
 	    if ((enum reg_class) cl == ira_allocno_classes[j])
 	      break;
@@ -1118,8 +1117,7 @@ setup_class_translate_array (enum reg_class *class_translate,
       for (i = 0; i < classes_num; i++)
 	{
 	  aclass = classes[i];
-	  COPY_HARD_REG_SET (temp_hard_regset,
-			     reg_class_contents[aclass]);
+	  temp_hard_regset = reg_class_contents[aclass];
 	  AND_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 	  if (! hard_reg_set_empty_p (temp_hard_regset))
@@ -1223,9 +1221,9 @@ setup_reg_class_relations (void)
 	  ira_reg_classes_intersect_p[cl1][cl2] = false;
 	  ira_reg_class_intersect[cl1][cl2] = NO_REGS;
 	  ira_reg_class_subset[cl1][cl2] = NO_REGS;
-	  COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl1]);
+	  temp_hard_regset = reg_class_contents[cl1];
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-	  COPY_HARD_REG_SET (temp_set2, reg_class_contents[cl2]);
+	  temp_set2 = reg_class_contents[cl2];
 	  AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
 	  if (hard_reg_set_empty_p (temp_hard_regset)
 	      && hard_reg_set_empty_p (temp_set2))
@@ -1264,15 +1262,15 @@ setup_reg_class_relations (void)
 	    }
 	  ira_reg_class_subunion[cl1][cl2] = NO_REGS;
 	  ira_reg_class_superunion[cl1][cl2] = NO_REGS;
-	  COPY_HARD_REG_SET (intersection_set, reg_class_contents[cl1]);
+	  intersection_set = reg_class_contents[cl1];
 	  AND_HARD_REG_SET (intersection_set, reg_class_contents[cl2]);
 	  AND_COMPL_HARD_REG_SET (intersection_set, no_unit_alloc_regs);
-	  COPY_HARD_REG_SET (union_set, reg_class_contents[cl1]);
+	  union_set = reg_class_contents[cl1];
 	  IOR_HARD_REG_SET (union_set, reg_class_contents[cl2]);
 	  AND_COMPL_HARD_REG_SET (union_set, no_unit_alloc_regs);
 	  for (cl3 = 0; cl3 < N_REG_CLASSES; cl3++)
 	    {
-	      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl3]);
+	      temp_hard_regset = reg_class_contents[cl3];
 	      AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 	      if (hard_reg_set_subset_p (temp_hard_regset, intersection_set))
 		{
@@ -1281,10 +1279,9 @@ setup_reg_class_relations (void)
 		     of CL1 and CL2.  */
 		  if (important_class_p[cl3])
 		    {
-		      COPY_HARD_REG_SET
-			(temp_set2,
-			 reg_class_contents
-			 [(int) ira_reg_class_intersect[cl1][cl2]]);
+		      temp_set2
+			= (reg_class_contents
+			   [ira_reg_class_intersect[cl1][cl2]]);
 		      AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
 		      if (! hard_reg_set_subset_p (temp_hard_regset, temp_set2)
 			  /* If the allocatable hard register sets are
@@ -1302,9 +1299,8 @@ setup_reg_class_relations (void)
 					   ira_reg_class_intersect[cl1][cl2]])))))
 			ira_reg_class_intersect[cl1][cl2] = (enum reg_class) cl3;
 		    }
-		  COPY_HARD_REG_SET
-		    (temp_set2,
-		     reg_class_contents[(int) ira_reg_class_subset[cl1][cl2]]);
+		  temp_set2
+		    = reg_class_contents[ira_reg_class_subset[cl1][cl2]];
 		  AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
 		  if (! hard_reg_set_subset_p (temp_hard_regset, temp_set2)
 		      /* Ignore unavailable hard registers and prefer
@@ -1322,9 +1318,8 @@ setup_reg_class_relations (void)
 		  /* CL3 allocatable hard register set is inside of
 		     union of allocatable hard register sets of CL1
 		     and CL2.  */
-		  COPY_HARD_REG_SET
-		    (temp_set2,
-		     reg_class_contents[(int) ira_reg_class_subunion[cl1][cl2]]);
+		  temp_set2
+		    = reg_class_contents[ira_reg_class_subunion[cl1][cl2]];
 		  AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
 	 	  if (ira_reg_class_subunion[cl1][cl2] == NO_REGS
 		      || (hard_reg_set_subset_p (temp_set2, temp_hard_regset)
@@ -1347,9 +1342,8 @@ setup_reg_class_relations (void)
 		  /* CL3 allocatable hard register set contains union
 		     of allocatable hard register sets of CL1 and
 		     CL2.  */
-		  COPY_HARD_REG_SET
-		    (temp_set2,
-		     reg_class_contents[(int) ira_reg_class_superunion[cl1][cl2]]);
+		  temp_set2
+		    = reg_class_contents[ira_reg_class_superunion[cl1][cl2]];
 		  AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
 	 	  if (ira_reg_class_superunion[cl1][cl2] == NO_REGS
 		      || (hard_reg_set_subset_p (temp_hard_regset, temp_set2)
@@ -1499,7 +1493,7 @@ setup_prohibited_class_mode_regs (void)
 
   for (cl = (int) N_REG_CLASSES - 1; cl >= 0; cl--)
     {
-      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
+      temp_hard_regset = reg_class_contents[cl];
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
       for (j = 0; j < NUM_MACHINE_MODES; j++)
 	{
@@ -2305,7 +2299,7 @@ ira_setup_eliminable_regset (void)
   if (frame_pointer_needed)
     df_set_regs_ever_live (HARD_FRAME_POINTER_REGNUM, true);
     
-  COPY_HARD_REG_SET (ira_no_alloc_regs, no_unit_alloc_regs);
+  ira_no_alloc_regs = no_unit_alloc_regs;
   CLEAR_HARD_REG_SET (eliminable_regset);
 
   compute_regs_asm_clobbered ();
diff --git a/gcc/lra-assigns.c b/gcc/lra-assigns.c
index 609feec48ae..d5268c36ee6 100644
--- a/gcc/lra-assigns.c
+++ b/gcc/lra-assigns.c
@@ -493,7 +493,7 @@ find_hard_regno_for_1 (int regno, int *cost, int try_only_hard_regno,
   HARD_REG_SET impossible_start_hard_regs, available_regs;
 
   if (hard_reg_set_empty_p (regno_set))
-    COPY_HARD_REG_SET (conflict_set, lra_no_alloc_regs);
+    conflict_set = lra_no_alloc_regs;
   else
     {
       COMPL_HARD_REG_SET (conflict_set, regno_set);
@@ -622,7 +622,7 @@ find_hard_regno_for_1 (int regno, int *cost, int try_only_hard_regno,
   biggest_nregs = hard_regno_nregs (hard_regno, biggest_mode);
   nregs_diff = (biggest_nregs
 		- hard_regno_nregs (hard_regno, PSEUDO_REGNO_MODE (regno)));
-  COPY_HARD_REG_SET (available_regs, reg_class_contents[rclass]);
+  available_regs = reg_class_contents[rclass];
   AND_COMPL_HARD_REG_SET (available_regs, lra_no_alloc_regs);
   for (i = 0; i < rclass_size; i++)
     {
@@ -1217,7 +1217,7 @@ setup_live_pseudos_and_spill_after_risky_transforms (bitmap
 		  sparseset_set_bit (live_range_hard_reg_pseudos, r2->regno);
 	    }
 	}
-      COPY_HARD_REG_SET (conflict_set, lra_no_alloc_regs);
+      conflict_set = lra_no_alloc_regs;
       IOR_HARD_REG_SET (conflict_set, lra_reg_info[regno].conflict_hard_regs);
       val = lra_reg_info[regno].val;
       offset = lra_reg_info[regno].offset;
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index f2584075937..93546129066 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -1854,7 +1854,7 @@ prohibited_class_reg_set_mode_p (enum reg_class rclass,
   HARD_REG_SET temp;
   
   lra_assert (hard_reg_set_subset_p (reg_class_contents[rclass], set));
-  COPY_HARD_REG_SET (temp, set);
+  temp = set;
   AND_COMPL_HARD_REG_SET (temp, lra_no_alloc_regs);
   return (hard_reg_set_subset_p
 	  (temp, ira_prohibited_class_mode_regs[rclass][mode]));
@@ -2288,7 +2288,7 @@ process_alt_operands (int only_alternative)
 		       reloads. */
 		    badop = false;
 		    this_alternative = curr_alt[m];
-		    COPY_HARD_REG_SET (this_alternative_set, curr_alt_set[m]);
+		    this_alternative_set = curr_alt_set[m];
 		    winreg = this_alternative != NO_REGS;
 		    break;
 		  }
@@ -2517,8 +2517,7 @@ process_alt_operands (int only_alternative)
 		{
 		  HARD_REG_SET available_regs;
 		  
-		  COPY_HARD_REG_SET (available_regs,
-				     reg_class_contents[this_alternative]);
+		  available_regs = reg_class_contents[this_alternative];
 		  AND_COMPL_HARD_REG_SET
 		    (available_regs,
 		     ira_prohibited_class_mode_regs[this_alternative][mode]);
@@ -2888,7 +2887,7 @@ process_alt_operands (int only_alternative)
 	      goto fail;
 	    }
 	  curr_alt[nop] = this_alternative;
-	  COPY_HARD_REG_SET (curr_alt_set[nop], this_alternative_set);
+	  curr_alt_set[nop] = this_alternative_set;
 	  curr_alt_win[nop] = this_alternative_win;
 	  curr_alt_match_win[nop] = this_alternative_match_win;
 	  curr_alt_offmemok[nop] = this_alternative_offmemok;
@@ -6246,7 +6245,7 @@ inherit_in_ebb (rtx_insn *head, rtx_insn *tail)
   bitmap_clear (&invalid_invariant_regs);
   last_processed_bb = NULL;
   CLEAR_HARD_REG_SET (potential_reload_hard_regs);
-  COPY_HARD_REG_SET (live_hard_regs, eliminable_regset);
+  live_hard_regs = eliminable_regset;
   IOR_HARD_REG_SET (live_hard_regs, lra_no_alloc_regs);
   /* We don't process new insns generated in the loop.	*/
   for (curr_insn = tail; curr_insn != PREV_INSN (head); curr_insn = prev_insn)
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c
index 057ef8cab4d..44038165d81 100644
--- a/gcc/lra-lives.c
+++ b/gcc/lra-lives.c
@@ -929,7 +929,7 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p)
 	{
 	  call_insn = curr_insn;
 	  if (! flag_ipa_ra && ! targetm.return_call_with_max_clobbers)
-	    COPY_HARD_REG_SET(last_call_used_reg_set, call_used_reg_set);
+	    last_call_used_reg_set = call_used_reg_set;
 	  else
 	    {
 	      HARD_REG_SET this_call_used_reg_set;
@@ -953,7 +953,7 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p)
 						      last_call_used_reg_set,
 						      last_call_insn);
 		}
-	      COPY_HARD_REG_SET(last_call_used_reg_set, this_call_used_reg_set);
+	      last_call_used_reg_set = this_call_used_reg_set;
 	      last_call_insn = call_insn;
 	    }
 
diff --git a/gcc/lra-spills.c b/gcc/lra-spills.c
index a322da81544..26cb421c81a 100644
--- a/gcc/lra-spills.c
+++ b/gcc/lra-spills.c
@@ -243,7 +243,7 @@ assign_spill_hard_regs (int *pseudo_regnos, int n)
   /* Set up reserved hard regs for every program point.	 */
   reserved_hard_regs = XNEWVEC (HARD_REG_SET, lra_live_max_point);
   for (p = 0; p < lra_live_max_point; p++)
-    COPY_HARD_REG_SET (reserved_hard_regs[p], lra_no_alloc_regs);
+    reserved_hard_regs[p] = lra_no_alloc_regs;
   for (i = FIRST_PSEUDO_REGISTER; i < regs_num; i++)
     if (lra_reg_info[i].nrefs != 0
 	&& (hard_regno = lra_get_regno_hard_regno (i)) >= 0)
@@ -274,8 +274,7 @@ assign_spill_hard_regs (int *pseudo_regnos, int n)
 	  continue;
 	}
       lra_assert (spill_class != NO_REGS);
-      COPY_HARD_REG_SET (conflict_hard_regs,
-			 lra_reg_info[regno].conflict_hard_regs);
+      conflict_hard_regs = lra_reg_info[regno].conflict_hard_regs;
       for (r = lra_reg_info[regno].live_ranges; r != NULL; r = r->next)
 	for (p = r->start; p <= r->finish; p++)
 	  IOR_HARD_REG_SET (conflict_hard_regs, reserved_hard_regs[p]);
diff --git a/gcc/lra.c b/gcc/lra.c
index 1f977448136..886fb108150 100644
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -2384,7 +2384,7 @@ lra (FILE *f)
      need it.  */
   emit_note (NOTE_INSN_DELETED);
 
-  COPY_HARD_REG_SET (lra_no_alloc_regs, ira_no_alloc_regs);
+  lra_no_alloc_regs = ira_no_alloc_regs;
 
   init_reg_info ();
   expand_reg_info ();
diff --git a/gcc/mode-switching.c b/gcc/mode-switching.c
index eba750922f7..4a34d4a2b7c 100644
--- a/gcc/mode-switching.c
+++ b/gcc/mode-switching.c
@@ -165,7 +165,7 @@ new_seginfo (int mode, rtx_insn *insn, int bb, HARD_REG_SET regs_live)
   ptr->insn_ptr = insn;
   ptr->bbnum = bb;
   ptr->next = NULL;
-  COPY_HARD_REG_SET (ptr->regs_live, regs_live);
+  ptr->regs_live = regs_live;
   return ptr;
 }
 
diff --git a/gcc/postreload.c b/gcc/postreload.c
index 497a4b0e9f9..268b75b7777 100644
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -1267,7 +1267,7 @@ reload_combine (void)
 
 	  REG_SET_TO_HARD_REG_SET (live, live_in);
 	  compute_use_by_pseudos (&live, live_in);
-	  COPY_HARD_REG_SET (LABEL_LIVE (insn), live);
+	  LABEL_LIVE (insn) = live;
 	  IOR_HARD_REG_SET (ever_live_at_start, live);
 	}
     }
diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index 0f0089acdea..19f020acd7e 100644
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -368,7 +368,7 @@ straighten_stack (rtx_insn *insn, stack_ptr regstack)
   if (regstack->top <= 0)
     return;
 
-  COPY_HARD_REG_SET (temp_stack.reg_set, regstack->reg_set);
+  temp_stack.reg_set = regstack->reg_set;
 
   for (top = temp_stack.top = regstack->top; top >= 0; top--)
     temp_stack.reg[top] = FIRST_STACK_REG + temp_stack.top - top;
diff --git a/gcc/reginfo.c b/gcc/reginfo.c
index 4832affd436..8268d0df713 100644
--- a/gcc/reginfo.c
+++ b/gcc/reginfo.c
@@ -230,8 +230,8 @@ save_register_info (void)
   /* And similarly for reg_names.  */
   gcc_assert (sizeof reg_names == sizeof saved_reg_names);
   memcpy (saved_reg_names, reg_names, sizeof reg_names);
-  COPY_HARD_REG_SET (saved_accessible_reg_set, accessible_reg_set);
-  COPY_HARD_REG_SET (saved_operand_reg_set, operand_reg_set);
+  saved_accessible_reg_set = accessible_reg_set;
+  saved_operand_reg_set = operand_reg_set;
 }
 
 /* Restore the register information.  */
@@ -247,8 +247,8 @@ restore_register_info (void)
 #endif
 
   memcpy (reg_names, saved_reg_names, sizeof reg_names);
-  COPY_HARD_REG_SET (accessible_reg_set, saved_accessible_reg_set);
-  COPY_HARD_REG_SET (operand_reg_set, saved_operand_reg_set);
+  accessible_reg_set = saved_accessible_reg_set;
+  operand_reg_set = saved_operand_reg_set;
 }
 
 /* After switches have been processed, which perhaps alter
@@ -298,7 +298,7 @@ init_reg_sets_1 (void)
 	  HARD_REG_SET c;
 	  int k;
 
-	  COPY_HARD_REG_SET (c, reg_class_contents[i]);
+	  c = reg_class_contents[i];
 	  IOR_HARD_REG_SET (c, reg_class_contents[j]);
 	  for (k = 0; k < N_REG_CLASSES; k++)
 	    if (hard_reg_set_subset_p (reg_class_contents[k], c)
@@ -321,7 +321,7 @@ init_reg_sets_1 (void)
 	  HARD_REG_SET c;
 	  int k;
 
-	  COPY_HARD_REG_SET (c, reg_class_contents[i]);
+	  c = reg_class_contents[i];
 	  IOR_HARD_REG_SET (c, reg_class_contents[j]);
 	  for (k = 0; k < N_REG_CLASSES; k++)
 	    if (hard_reg_set_subset_p (c, reg_class_contents[k]))
@@ -450,8 +450,8 @@ init_reg_sets_1 (void)
         }
     }
 
-  COPY_HARD_REG_SET (call_fixed_reg_set, fixed_reg_set);
-  COPY_HARD_REG_SET (fixed_nonglobal_reg_set, fixed_reg_set);
+  call_fixed_reg_set = fixed_reg_set;
+  fixed_nonglobal_reg_set = fixed_reg_set;
 
   /* Preserve global registers if called more than once.  */
   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
@@ -1323,8 +1323,7 @@ record_subregs_of_mode (rtx subreg, bool partial_def)
     {
       valid_mode_changes[regno]
 	= XOBNEW (&valid_mode_changes_obstack, HARD_REG_SET);
-      COPY_HARD_REG_SET (*valid_mode_changes[regno],
-			 simplifiable_subregs (shape));
+      *valid_mode_changes[regno] = simplifiable_subregs (shape);
     }
 }
 
diff --git a/gcc/regrename.c b/gcc/regrename.c
index 580f29d4937..997e884546c 100644
--- a/gcc/regrename.c
+++ b/gcc/regrename.c
@@ -253,7 +253,7 @@ create_new_chain (unsigned this_regno, unsigned this_nregs, rtx *loc,
       CLEAR_HARD_REG_BIT (live_hard_regs, head->regno + nregs);
     }
 
-  COPY_HARD_REG_SET (head->hard_conflicts, live_hard_regs);
+  head->hard_conflicts = live_hard_regs;
   bitmap_set_bit (&open_chains_set, head->id);
 
   open_chains = head;
@@ -486,7 +486,7 @@ rename_chains (void)
 	      && reg == FRAME_POINTER_REGNUM))
 	continue;
 
-      COPY_HARD_REG_SET (this_unavailable, unavailable);
+      this_unavailable = unavailable;
 
       reg_class super_class = regrename_find_superclass (this_head, &n_uses,
 							 &this_unavailable);
diff --git a/gcc/reload1.c b/gcc/reload1.c
index e6069824d5e..cadad5e1ddc 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -1732,7 +1732,7 @@ order_regs_for_reload (class insn_chain *chain)
   HARD_REG_SET used_by_pseudos2;
   reg_set_iterator rsi;
 
-  COPY_HARD_REG_SET (bad_spill_regs, fixed_reg_set);
+  bad_spill_regs = fixed_reg_set;
 
   memset (spill_cost, 0, sizeof spill_cost);
   memset (spill_add_cost, 0, sizeof spill_add_cost);
@@ -1823,7 +1823,7 @@ find_reg (class insn_chain *chain, int order)
   static int regno_pseudo_regs[FIRST_PSEUDO_REGISTER];
   static int best_regno_pseudo_regs[FIRST_PSEUDO_REGISTER];
 
-  COPY_HARD_REG_SET (not_usable, bad_spill_regs);
+  not_usable = bad_spill_regs;
   IOR_HARD_REG_SET (not_usable, bad_spill_regs_global);
   IOR_COMPL_HARD_REG_SET (not_usable, reg_class_contents[rl->rclass]);
 
@@ -2007,7 +2007,7 @@ find_reload_regs (class insn_chain *chain)
 	  }
     }
 
-  COPY_HARD_REG_SET (chain->used_spill_regs, used_spill_regs_local);
+  chain->used_spill_regs = used_spill_regs_local;
   IOR_HARD_REG_SET (used_spill_regs, used_spill_regs_local);
 
   memcpy (chain->rld, rld, n_reloads * sizeof (struct reload));
diff --git a/gcc/resource.c b/gcc/resource.c
index d4d86ce4179..5b738e0fb58 100644
--- a/gcc/resource.c
+++ b/gcc/resource.c
@@ -565,12 +565,12 @@ find_dead_or_set_registers (rtx_insn *target, struct resources *res,
 		    }
 
 		  target_res = *res;
-		  COPY_HARD_REG_SET (scratch, target_set.regs);
+		  scratch = target_set.regs;
 		  AND_COMPL_HARD_REG_SET (scratch, needed.regs);
 		  AND_COMPL_HARD_REG_SET (target_res.regs, scratch);
 
 		  fallthrough_res = *res;
-		  COPY_HARD_REG_SET (scratch, set.regs);
+		  scratch = set.regs;
 		  AND_COMPL_HARD_REG_SET (scratch, needed.regs);
 		  AND_COMPL_HARD_REG_SET (fallthrough_res.regs, scratch);
 
@@ -601,7 +601,7 @@ find_dead_or_set_registers (rtx_insn *target, struct resources *res,
       mark_referenced_resources (insn, &needed, true);
       mark_set_resources (insn, &set, 0, MARK_SRC_DEST_CALL);
 
-      COPY_HARD_REG_SET (scratch, set.regs);
+      scratch = set.regs;
       AND_COMPL_HARD_REG_SET (scratch, needed.regs);
       AND_COMPL_HARD_REG_SET (res->regs, scratch);
     }
@@ -960,7 +960,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
 	     update it below.  */
 	  if (b == tinfo->block && b != -1 && tinfo->bb_tick == bb_ticks[b])
 	    {
-	      COPY_HARD_REG_SET (res->regs, tinfo->live_regs);
+	      res->regs = tinfo->live_regs;
 	      return;
 	    }
 	}
@@ -1121,7 +1121,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
 	    IOR_HARD_REG_SET (current_live_regs, start_of_epilogue_needs.regs);
 	}
 
-      COPY_HARD_REG_SET (res->regs, current_live_regs);
+      res->regs = current_live_regs;
       if (tinfo != NULL)
 	{
 	  tinfo->block = b;
@@ -1160,7 +1160,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
 	{
 	  mark_referenced_resources (insn, &needed, true);
 
-	  COPY_HARD_REG_SET (scratch, needed.regs);
+	  scratch = needed.regs;
 	  AND_COMPL_HARD_REG_SET (scratch, set.regs);
 	  IOR_HARD_REG_SET (new_resources.regs, scratch);
 
@@ -1171,9 +1171,7 @@ mark_target_live_regs (rtx_insn *insns, rtx target_maybe_return, struct resource
     }
 
   if (tinfo != NULL)
-    {
-      COPY_HARD_REG_SET (tinfo->live_regs, res->regs);
-    }
+    tinfo->live_regs = res->regs;
 }
 
 /* Initialize the resources required by mark_target_live_regs ().
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index f127ff74599..ce2db8161ee 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -1238,8 +1238,7 @@ mark_unavailable_hard_regs (def_t def, struct reg_rename *reg_rename_p,
 
   /* Leave regs as 'available' only from the current
      register class.  */
-  COPY_HARD_REG_SET (reg_rename_p->available_for_renaming,
-                     reg_class_contents[cl]);
+  reg_rename_p->available_for_renaming = reg_class_contents[cl];
 
   mode = GET_MODE (orig_dest);