[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, 12 insertions, 10 deletions

diff --git a/gcc/cse.c b/gcc/cse.c
index 58572e6..8ef9063 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -720,13 +720,14 @@ preferable (int cost_a, int regcost_a, int cost_b, int regcost_b)
 static int
 notreg_cost (rtx x, machine_mode mode, enum rtx_code outer, int opno)
 {
+  scalar_int_mode int_mode, inner_mode;
   return ((GET_CODE (x) == SUBREG
 	   && REG_P (SUBREG_REG (x))
-	   && GET_MODE_CLASS (mode) == MODE_INT
-	   && GET_MODE_CLASS (GET_MODE (SUBREG_REG (x))) == MODE_INT
-	   && GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))
+	   && is_int_mode (mode, &int_mode)
+	   && is_int_mode (GET_MODE (SUBREG_REG (x)), &inner_mode)
+	   && GET_MODE_SIZE (int_mode) < GET_MODE_SIZE (inner_mode)
 	   && subreg_lowpart_p (x)
-	   && TRULY_NOOP_TRUNCATION_MODES_P (mode, GET_MODE (SUBREG_REG (x))))
+	   && TRULY_NOOP_TRUNCATION_MODES_P (int_mode, inner_mode))
 	  ? 0
 	  : rtx_cost (x, mode, outer, opno, optimize_this_for_speed_p) * 2);
 }
@@ -4603,6 +4604,7 @@ cse_insn (rtx_insn *insn)
       /* Set nonzero if we need to call force_const_mem on with the
 	 contents of src_folded before using it.  */
       int src_folded_force_flag = 0;
+      scalar_int_mode int_mode;
 
       dest = SET_DEST (sets[i].rtl);
       src = SET_SRC (sets[i].rtl);
@@ -4840,13 +4842,13 @@ cse_insn (rtx_insn *insn)
 	 wider mode.  */
 
       if (src_const && src_related == 0 && CONST_INT_P (src_const)
-	  && GET_MODE_CLASS (mode) == MODE_INT
-	  && GET_MODE_PRECISION (mode) < BITS_PER_WORD)
+	  && is_int_mode (mode, &int_mode)
+	  && GET_MODE_PRECISION (int_mode) < BITS_PER_WORD)
 	{
-	  machine_mode wider_mode;
-
-	  FOR_EACH_WIDER_MODE (wider_mode, mode)
+	  opt_scalar_int_mode wider_mode_iter;
+	  FOR_EACH_WIDER_MODE (wider_mode_iter, int_mode)
 	    {
+	      scalar_int_mode wider_mode = wider_mode_iter.require ();
 	      if (GET_MODE_PRECISION (wider_mode) > BITS_PER_WORD)
 		break;
 
@@ -4860,7 +4862,7 @@ cse_insn (rtx_insn *insn)
 		   const_elt; const_elt = const_elt->next_same_value)
 		if (REG_P (const_elt->exp))
 		  {
-		    src_related = gen_lowpart (mode, const_elt->exp);
+		    src_related = gen_lowpart (int_mode, const_elt->exp);
 		    break;
 		  }