[20/77] Replace MODE_INT checks with is_int_mode

Replace checks of "GET_MODE_CLASS (...) == MODE_INT" with
"is_int_mode (..., &var)", in cases where it becomes useful
to refer to the mode as a scalar_int_mode.

2017-08-30  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* machmode.h (is_int_mode): New fuction.
	* combine.c (find_split_point): Use it.
	(combine_simplify_rtx): Likewise.
	(simplify_if_then_else): Likewise.
	(simplify_set): Likewise.
	(simplify_shift_const_1): Likewise.
	(simplify_comparison): Likewise.
	* config/aarch64/aarch64.c (aarch64_rtx_costs): Likewise.
	* cse.c (notreg_cost): Likewise.
	(cse_insn): Likewise.
	* cselib.c (cselib_lookup_1): Likewise.
	* dojump.c (do_jump_1): Likewise.
	(do_compare_rtx_and_jump): Likewise.
	* dse.c (get_call_args): Likewise.
	* dwarf2out.c (rtl_for_decl_init): Likewise.
	(native_encode_initializer): Likewise.
	* expmed.c (emit_store_flag_1): Likewise.
	(emit_store_flag): Likewise.
	* expr.c (convert_modes): Likewise.
	(store_field): Likewise.
	(expand_expr_real_1): Likewise.
	* fold-const.c (fold_read_from_constant_string): Likewise.
	* gimple-ssa-sprintf.c (get_format_string): Likewise.
	* optabs-libfuncs.c (gen_int_libfunc): Likewise.
	* optabs.c (expand_binop): Likewise.
	(expand_unop): Likewise.
	(expand_abs_nojump): Likewise.
	(expand_one_cmpl_abs_nojump): Likewise.
	* simplify-rtx.c (mode_signbit_p): Likewise.
	(val_signbit_p): Likewise.
	(val_signbit_known_set_p): Likewise.
	(val_signbit_known_clear_p): Likewise.
	(simplify_relational_operation_1): Likewise.
	* tree.c (vector_type_mode): Likewise.

gcc/go/
	* go-lang.c (go_langhook_type_for_mode): Use is_int_mode.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r251472

1 files changed, 9 insertions, 7 deletions

diff --git a/gcc/cselib.c b/gcc/cselib.c
index 74c25ac1f97..41e0e4fbb34 100644
--- a/gcc/cselib.c
+++ b/gcc/cselib.c
@@ -2009,6 +2009,8 @@ cselib_lookup_1 (rtx x, machine_mode mode,
 
       e = new_cselib_val (next_uid, GET_MODE (x), x);
       new_elt_loc_list (e, x);
+
+      scalar_int_mode int_mode;
       if (REG_VALUES (i) == 0)
 	{
 	  /* Maintain the invariant that the first entry of
@@ -2018,27 +2020,27 @@ cselib_lookup_1 (rtx x, machine_mode mode,
 	  REG_VALUES (i) = new_elt_list (REG_VALUES (i), NULL);
 	}
       else if (cselib_preserve_constants
-	       && GET_MODE_CLASS (mode) == MODE_INT)
+	       && is_int_mode (mode, &int_mode))
 	{
 	  /* During var-tracking, try harder to find equivalences
 	     for SUBREGs.  If a setter sets say a DImode register
 	     and user uses that register only in SImode, add a lowpart
 	     subreg location.  */
 	  struct elt_list *lwider = NULL;
+	  scalar_int_mode lmode;
 	  l = REG_VALUES (i);
 	  if (l && l->elt == NULL)
 	    l = l->next;
 	  for (; l; l = l->next)
-	    if (GET_MODE_CLASS (GET_MODE (l->elt->val_rtx)) == MODE_INT
-		&& GET_MODE_SIZE (GET_MODE (l->elt->val_rtx))
-		   > GET_MODE_SIZE (mode)
+	    if (is_int_mode (GET_MODE (l->elt->val_rtx), &lmode)
+		&& GET_MODE_SIZE (lmode) > GET_MODE_SIZE (int_mode)
 		&& (lwider == NULL
-		    || GET_MODE_SIZE (GET_MODE (l->elt->val_rtx))
+		    || GET_MODE_SIZE (lmode)
 		       < GET_MODE_SIZE (GET_MODE (lwider->elt->val_rtx))))
 	      {
 		struct elt_loc_list *el;
 		if (i < FIRST_PSEUDO_REGISTER
-		    && hard_regno_nregs[i][GET_MODE (l->elt->val_rtx)] != 1)
+		    && hard_regno_nregs[i][lmode] != 1)
 		  continue;
 		for (el = l->elt->locs; el; el = el->next)
 		  if (!REG_P (el->loc))
@@ -2048,7 +2050,7 @@ cselib_lookup_1 (rtx x, machine_mode mode,
 	      }
 	  if (lwider)
 	    {
-	      rtx sub = lowpart_subreg (mode, lwider->elt->val_rtx,
+	      rtx sub = lowpart_subreg (int_mode, lwider->elt->val_rtx,
 					GET_MODE (lwider->elt->val_rtx));
 	      if (sub)
 		new_elt_loc_list (e, sub);