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[1/4] middle-end: Revert can_special_div_by_const changes [PR108583]

Message ID patch-16928-tamar@arm.com
State New
Headers show
Series [1/4] middle-end: Revert can_special_div_by_const changes [PR108583] | expand

Commit Message

Tamar Christina Feb. 27, 2023, 12:32 p.m. UTC
Hi All,

This reverts the changes for the CAN_SPECIAL_DIV_BY_CONST hook.

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Ok for master?

Thanks,
Tamar

gcc/ChangeLog:

	PR target/108583
	* doc/tm.texi (TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST): Remove.
	* doc/tm.texi.in: Likewise.
	* explow.cc (round_push, align_dynamic_address): Revert previous patch.
	* expmed.cc (expand_divmod): Likewise.
	* expmed.h (expand_divmod): Likewise.
	* expr.cc (force_operand, expand_expr_divmod): Likewise.
	* optabs.cc (expand_doubleword_mod, expand_doubleword_divmod): Likewise.
	* target.def (can_special_div_by_const): Remove.
	* target.h: Remove tree-core.h include
	* targhooks.cc (default_can_special_div_by_const): Remove.
	* targhooks.h (default_can_special_div_by_const): Remove.
	* tree-vect-generic.cc (expand_vector_operation): Remove hook.
	* tree-vect-patterns.cc (vect_recog_divmod_pattern): Remove hook.
	* tree-vect-stmts.cc (vectorizable_operation): Remove hook.

--- inline copy of patch -- 
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index c6c891972d1e58cd163b259ba96a599d62326865..50a8872a6695b18b9bed0d393bacf733833633db 100644




--
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index c6c891972d1e58cd163b259ba96a599d62326865..50a8872a6695b18b9bed0d393bacf733833633db 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -6137,20 +6137,6 @@ instruction pattern.  There is no need for the hook to handle these two
 implementation approaches itself.
 @end deftypefn
 
-@deftypefn {Target Hook} bool TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST (enum @var{tree_code}, tree @var{vectype}, wide_int @var{constant}, rtx *@var{output}, rtx @var{in0}, rtx @var{in1})
-This hook is used to test whether the target has a special method of
-division of vectors of type @var{vectype} using the value @var{constant},
-and producing a vector of type @var{vectype}.  The division
-will then not be decomposed by the vectorizer and kept as a div.
-
-When the hook is being used to test whether the target supports a special
-divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook
-is being used to emit a division, @var{in0} and @var{in1} are the source
-vectors of type @var{vecttype} and @var{output} is the destination vector of
-type @var{vectype}.
-
-Return true if the operation is possible, emitting instructions for it
-if rtxes are provided and updating @var{output}.
 @end deftypefn
 
 @deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION (unsigned @var{code}, tree @var{vec_type_out}, tree @var{vec_type_in})
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 613b2534149415f442163d599503efaf423b673b..3e07978a02f4e6077adae6cadc93ea4273295f1f 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -4173,7 +4173,6 @@ address;  but often a machine-dependent strategy can generate better code.
 
 @hook TARGET_VECTORIZE_VEC_PERM_CONST
 
-@hook TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST
 
 @hook TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION
 
diff --git a/gcc/explow.cc b/gcc/explow.cc
index 83439b32abe1b9aa4b7983eb629804f97486acbd..be9195b33323ee5597fc212f0befa016eea4573c 100644
--- a/gcc/explow.cc
+++ b/gcc/explow.cc
@@ -1037,7 +1037,7 @@ round_push (rtx size)
      TRUNC_DIV_EXPR.  */
   size = expand_binop (Pmode, add_optab, size, alignm1_rtx,
 		       NULL_RTX, 1, OPTAB_LIB_WIDEN);
-  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, size, align_rtx,
+  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, size, align_rtx,
 			NULL_RTX, 1);
   size = expand_mult (Pmode, size, align_rtx, NULL_RTX, 1);
 
@@ -1203,7 +1203,7 @@ align_dynamic_address (rtx target, unsigned required_align)
 			 gen_int_mode (required_align / BITS_PER_UNIT - 1,
 				       Pmode),
 			 NULL_RTX, 1, OPTAB_LIB_WIDEN);
-  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, target,
+  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, target,
 			  gen_int_mode (required_align / BITS_PER_UNIT,
 					Pmode),
 			  NULL_RTX, 1);
diff --git a/gcc/expmed.h b/gcc/expmed.h
index 0419e2dac85850889ce0bee59515e31a80c582de..4dfe635c22ee49f2dba4c53640941628068f3901 100644
--- a/gcc/expmed.h
+++ b/gcc/expmed.h
@@ -710,9 +710,8 @@ extern rtx expand_shift (enum tree_code, machine_mode, rtx, poly_int64, rtx,
 extern rtx maybe_expand_shift (enum tree_code, machine_mode, rtx, int, rtx,
 			       int);
 #ifdef GCC_OPTABS_H
-extern rtx expand_divmod (int, enum tree_code, machine_mode, tree, tree,
-			  rtx, rtx, rtx, int,
-			  enum optab_methods = OPTAB_LIB_WIDEN);
+extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx,
+			  rtx, int, enum optab_methods = OPTAB_LIB_WIDEN);
 #endif
 #endif
 
diff --git a/gcc/expmed.cc b/gcc/expmed.cc
index 917360199ca56157cf3c3693b65e93cd9d8ed244..1553ea8e31eb6433025ab18a3a59c169d3b7692f 100644
--- a/gcc/expmed.cc
+++ b/gcc/expmed.cc
@@ -4222,8 +4222,8 @@ expand_sdiv_pow2 (scalar_int_mode mode, rtx op0, HOST_WIDE_INT d)
 
 rtx
 expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
-	       tree treeop0, tree treeop1, rtx op0, rtx op1, rtx target,
-	       int unsignedp, enum optab_methods methods)
+	       rtx op0, rtx op1, rtx target, int unsignedp,
+	       enum optab_methods methods)
 {
   machine_mode compute_mode;
   rtx tquotient;
@@ -4375,17 +4375,6 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 
   last_div_const = ! rem_flag && op1_is_constant ? INTVAL (op1) : 0;
 
-  /* Check if the target has specific expansions for the division.  */
-  tree cst;
-  if (treeop0
-      && treeop1
-      && (cst = uniform_integer_cst_p (treeop1))
-      && targetm.vectorize.can_special_div_by_const (code, TREE_TYPE (treeop0),
-						     wi::to_wide (cst),
-						     &target, op0, op1))
-    return target;
-
-
   /* Now convert to the best mode to use.  */
   if (compute_mode != mode)
     {
@@ -4629,8 +4618,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 			    || (optab_handler (sdivmod_optab, int_mode)
 				!= CODE_FOR_nothing)))
 		      quotient = expand_divmod (0, TRUNC_DIV_EXPR,
-						int_mode, treeop0, treeop1,
-						op0, gen_int_mode (abs_d,
+						int_mode, op0,
+						gen_int_mode (abs_d,
 							      int_mode),
 						NULL_RTX, 0);
 		    else
@@ -4819,8 +4808,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 				      size - 1, NULL_RTX, 0);
 		t3 = force_operand (gen_rtx_MINUS (int_mode, t1, nsign),
 				    NULL_RTX);
-		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, treeop0,
-				    treeop1, t3, op1, NULL_RTX, 0);
+		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, t3, op1,
+				    NULL_RTX, 0);
 		if (t4)
 		  {
 		    rtx t5;
diff --git a/gcc/expr.cc b/gcc/expr.cc
index 15be1c8db999103bb9e5fa33daa44ae06de5ace8..78d35297e755216339078d5b2280c6e277f26d72 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -8207,17 +8207,16 @@ force_operand (rtx value, rtx target)
 	    return expand_divmod (0,
 				  FLOAT_MODE_P (GET_MODE (value))
 				  ? RDIV_EXPR : TRUNC_DIV_EXPR,
-				  GET_MODE (value), NULL, NULL, op1, op2,
-				  target, 0);
+				  GET_MODE (value), op1, op2, target, 0);
 	case MOD:
-	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 0);
+	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
+				target, 0);
 	case UDIV:
-	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 1);
+	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), op1, op2,
+				target, 1);
 	case UMOD:
-	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 1);
+	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
+				target, 1);
 	case ASHIFTRT:
 	  return expand_simple_binop (GET_MODE (value), code, op1, op2,
 				      target, 0, OPTAB_LIB_WIDEN);
@@ -9170,13 +9169,11 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
       bool speed_p = optimize_insn_for_speed_p ();
       do_pending_stack_adjust ();
       start_sequence ();
-      rtx uns_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
-				   op0, op1, target, 1);
+      rtx uns_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 1);
       rtx_insn *uns_insns = get_insns ();
       end_sequence ();
       start_sequence ();
-      rtx sgn_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
-				   op0, op1, target, 0);
+      rtx sgn_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 0);
       rtx_insn *sgn_insns = get_insns ();
       end_sequence ();
       unsigned uns_cost = seq_cost (uns_insns, speed_p);
@@ -9198,8 +9195,7 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
       emit_insn (sgn_insns);
       return sgn_ret;
     }
-  return expand_divmod (mod_p, code, mode, treeop0, treeop1,
-			op0, op1, target, unsignedp);
+  return expand_divmod (mod_p, code, mode, op0, op1, target, unsignedp);
 }
 
 rtx
diff --git a/gcc/optabs.cc b/gcc/optabs.cc
index cf22bfec3f5513f56d22c866231edbf322ff6945..474ccbd7915b4f144cebe0369a6e77082c1e617b 100644
--- a/gcc/optabs.cc
+++ b/gcc/optabs.cc
@@ -1106,9 +1106,8 @@ expand_doubleword_mod (machine_mode mode, rtx op0, rtx op1, bool unsignedp)
 		return NULL_RTX;
 	    }
 	}
-      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, NULL, NULL,
-				     sum, gen_int_mode (INTVAL (op1),
-							word_mode),
+      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, sum,
+				     gen_int_mode (INTVAL (op1), word_mode),
 				     NULL_RTX, 1, OPTAB_DIRECT);
       if (remainder == NULL_RTX)
 	return NULL_RTX;
@@ -1211,8 +1210,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
 
   if (op11 != const1_rtx)
     {
-      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, NULL, NULL, quot1,
-				op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
+      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, quot1, op11,
+				NULL_RTX, unsignedp, OPTAB_DIRECT);
       if (rem2 == NULL_RTX)
 	return NULL_RTX;
 
@@ -1226,8 +1225,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
       if (rem2 == NULL_RTX)
 	return NULL_RTX;
 
-      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, NULL, NULL, quot1,
-				 op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
+      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, quot1, op11,
+				 NULL_RTX, unsignedp, OPTAB_DIRECT);
       if (quot2 == NULL_RTX)
 	return NULL_RTX;
 
diff --git a/gcc/target.def b/gcc/target.def
index db8af0cbe81624513f114fc9bbd8be61d855f409..e0a5c7adbd962f5d08ed08d1d81afa2c2baa64a5 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -1905,25 +1905,6 @@ implementation approaches itself.",
 	const vec_perm_indices &sel),
  NULL)
 
-DEFHOOK
-(can_special_div_by_const,
- "This hook is used to test whether the target has a special method of\n\
-division of vectors of type @var{vectype} using the value @var{constant},\n\
-and producing a vector of type @var{vectype}.  The division\n\
-will then not be decomposed by the vectorizer and kept as a div.\n\
-\n\
-When the hook is being used to test whether the target supports a special\n\
-divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook\n\
-is being used to emit a division, @var{in0} and @var{in1} are the source\n\
-vectors of type @var{vecttype} and @var{output} is the destination vector of\n\
-type @var{vectype}.\n\
-\n\
-Return true if the operation is possible, emitting instructions for it\n\
-if rtxes are provided and updating @var{output}.",
- bool, (enum tree_code, tree vectype, wide_int constant, rtx *output,
-	rtx in0, rtx in1),
- default_can_special_div_by_const)
-
 /* Return true if the target supports misaligned store/load of a
    specific factor denoted in the third parameter.  The last parameter
    is true if the access is defined in a packed struct.  */
diff --git a/gcc/target.h b/gcc/target.h
index 03fd03a52075b4836159035ec14078c0aebdd7e9..93691882757232c514fca82b99f913158c2d47b1 100644
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -51,7 +51,6 @@
 #include "insn-codes.h"
 #include "tm.h"
 #include "hard-reg-set.h"
-#include "tree-core.h"
 
 #if CHECKING_P
 
diff --git a/gcc/targhooks.h b/gcc/targhooks.h
index a1df260f5483dc84f18d8f12c5202484a32d5bb7..a6a4809ca91baa5d7fad2244549317a31390f0c2 100644
--- a/gcc/targhooks.h
+++ b/gcc/targhooks.h
@@ -209,8 +209,6 @@ extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
 extern rtx default_addr_space_convert (rtx, tree, tree);
 extern unsigned int default_case_values_threshold (void);
 extern bool default_have_conditional_execution (void);
-extern bool default_can_special_div_by_const (enum tree_code, tree, wide_int,
-					      rtx *, rtx, rtx);
 
 extern bool default_libc_has_function (enum function_class, tree);
 extern bool default_libc_has_fast_function (int fcode);
diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc
index fe0116521feaf32187e7bc113bf93b1805852c79..211525720a620d6f533e2da91e03877337a931e7 100644
--- a/gcc/targhooks.cc
+++ b/gcc/targhooks.cc
@@ -1840,14 +1840,6 @@ default_have_conditional_execution (void)
   return HAVE_conditional_execution;
 }
 
-/* Default that no division by constant operations are special.  */
-bool
-default_can_special_div_by_const (enum tree_code, tree, wide_int, rtx *, rtx,
-				  rtx)
-{
-  return false;
-}
-
 /* By default we assume that c99 functions are present at the runtime,
    but sincos is not.  */
 bool
diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc
index 166a248f4b9512d4c6fc8d760b458b7a467f7790..519a824ec727d4d4f28c14077dc3e970bed75ef6 100644
--- a/gcc/tree-vect-generic.cc
+++ b/gcc/tree-vect-generic.cc
@@ -1237,17 +1237,6 @@ expand_vector_operation (gimple_stmt_iterator *gsi, tree type, tree compute_type
 	  tree rhs2 = gimple_assign_rhs2 (assign);
 	  tree ret;
 
-	  /* Check if the target was going to handle it through the special
-	     division callback hook.  */
-	  tree cst = uniform_integer_cst_p (rhs2);
-	  if (cst &&
-	      targetm.vectorize.can_special_div_by_const (code, type,
-							  wi::to_wide (cst),
-							  NULL,
-							  NULL_RTX, NULL_RTX))
-	    return NULL_TREE;
-
-
 	  if (!optimize
 	      || !VECTOR_INTEGER_TYPE_P (type)
 	      || TREE_CODE (rhs2) != VECTOR_CST
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index 6934aebc69f231af24668f0a1c3d140e97f55487..1766ce277d6b88d8aa3be77e7c8abb504a10a735 100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -3913,14 +3913,6 @@ vect_recog_divmod_pattern (vec_info *vinfo,
 
       return pattern_stmt;
     }
-  else if ((cst = uniform_integer_cst_p (oprnd1))
-	   && targetm.vectorize.can_special_div_by_const (rhs_code, vectype,
-							  wi::to_wide (cst),
-							  NULL, NULL_RTX,
-							  NULL_RTX))
-    {
-      return NULL;
-    }
 
   if (prec > HOST_BITS_PER_WIDE_INT
       || integer_zerop (oprnd1))
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index eb4ca1f184e374d177eb43d5eb93acf6e6a8fde9..3a0fb5ad898ad42c3867f0b9564fc4e066e50081 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -6263,15 +6263,6 @@ vectorizable_operation (vec_info *vinfo,
 	}
       target_support_p = (optab_handler (optab, vec_mode)
 			  != CODE_FOR_nothing);
-      tree cst;
-      if (!target_support_p
-	  && op1
-	  && (cst = uniform_integer_cst_p (op1)))
-	target_support_p
-	  = targetm.vectorize.can_special_div_by_const (code, vectype,
-							wi::to_wide (cst),
-							NULL, NULL_RTX,
-							NULL_RTX);
     }
 
   bool using_emulated_vectors_p = vect_emulated_vector_p (vectype);

Comments

Richard Biener Feb. 27, 2023, 2:07 p.m. UTC | #1
On Mon, 27 Feb 2023, Tamar Christina wrote:

> Hi All,
> 
> This reverts the changes for the CAN_SPECIAL_DIV_BY_CONST hook.
> 
> Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.
> 
> Ok for master?

OK (you don't need approval for such reversion).

Thanks,
Richard.

> Thanks,
> Tamar
> 
> gcc/ChangeLog:
> 
> 	PR target/108583
> 	* doc/tm.texi (TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST): Remove.
> 	* doc/tm.texi.in: Likewise.
> 	* explow.cc (round_push, align_dynamic_address): Revert previous patch.
> 	* expmed.cc (expand_divmod): Likewise.
> 	* expmed.h (expand_divmod): Likewise.
> 	* expr.cc (force_operand, expand_expr_divmod): Likewise.
> 	* optabs.cc (expand_doubleword_mod, expand_doubleword_divmod): Likewise.
> 	* target.def (can_special_div_by_const): Remove.
> 	* target.h: Remove tree-core.h include
> 	* targhooks.cc (default_can_special_div_by_const): Remove.
> 	* targhooks.h (default_can_special_div_by_const): Remove.
> 	* tree-vect-generic.cc (expand_vector_operation): Remove hook.
> 	* tree-vect-patterns.cc (vect_recog_divmod_pattern): Remove hook.
> 	* tree-vect-stmts.cc (vectorizable_operation): Remove hook.
> 
> --- inline copy of patch -- 
> diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
> index c6c891972d1e58cd163b259ba96a599d62326865..50a8872a6695b18b9bed0d393bacf733833633db 100644
> --- a/gcc/doc/tm.texi
> +++ b/gcc/doc/tm.texi
> @@ -6137,20 +6137,6 @@ instruction pattern.  There is no need for the hook to handle these two
>  implementation approaches itself.
>  @end deftypefn
>  
> -@deftypefn {Target Hook} bool TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST (enum @var{tree_code}, tree @var{vectype}, wide_int @var{constant}, rtx *@var{output}, rtx @var{in0}, rtx @var{in1})
> -This hook is used to test whether the target has a special method of
> -division of vectors of type @var{vectype} using the value @var{constant},
> -and producing a vector of type @var{vectype}.  The division
> -will then not be decomposed by the vectorizer and kept as a div.
> -
> -When the hook is being used to test whether the target supports a special
> -divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook
> -is being used to emit a division, @var{in0} and @var{in1} are the source
> -vectors of type @var{vecttype} and @var{output} is the destination vector of
> -type @var{vectype}.
> -
> -Return true if the operation is possible, emitting instructions for it
> -if rtxes are provided and updating @var{output}.
>  @end deftypefn
>  
>  @deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION (unsigned @var{code}, tree @var{vec_type_out}, tree @var{vec_type_in})
> diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
> index 613b2534149415f442163d599503efaf423b673b..3e07978a02f4e6077adae6cadc93ea4273295f1f 100644
> --- a/gcc/doc/tm.texi.in
> +++ b/gcc/doc/tm.texi.in
> @@ -4173,7 +4173,6 @@ address;  but often a machine-dependent strategy can generate better code.
>  
>  @hook TARGET_VECTORIZE_VEC_PERM_CONST
>  
> -@hook TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST
>  
>  @hook TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION
>  
> diff --git a/gcc/explow.cc b/gcc/explow.cc
> index 83439b32abe1b9aa4b7983eb629804f97486acbd..be9195b33323ee5597fc212f0befa016eea4573c 100644
> --- a/gcc/explow.cc
> +++ b/gcc/explow.cc
> @@ -1037,7 +1037,7 @@ round_push (rtx size)
>       TRUNC_DIV_EXPR.  */
>    size = expand_binop (Pmode, add_optab, size, alignm1_rtx,
>  		       NULL_RTX, 1, OPTAB_LIB_WIDEN);
> -  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, size, align_rtx,
> +  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, size, align_rtx,
>  			NULL_RTX, 1);
>    size = expand_mult (Pmode, size, align_rtx, NULL_RTX, 1);
>  
> @@ -1203,7 +1203,7 @@ align_dynamic_address (rtx target, unsigned required_align)
>  			 gen_int_mode (required_align / BITS_PER_UNIT - 1,
>  				       Pmode),
>  			 NULL_RTX, 1, OPTAB_LIB_WIDEN);
> -  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, target,
> +  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, target,
>  			  gen_int_mode (required_align / BITS_PER_UNIT,
>  					Pmode),
>  			  NULL_RTX, 1);
> diff --git a/gcc/expmed.h b/gcc/expmed.h
> index 0419e2dac85850889ce0bee59515e31a80c582de..4dfe635c22ee49f2dba4c53640941628068f3901 100644
> --- a/gcc/expmed.h
> +++ b/gcc/expmed.h
> @@ -710,9 +710,8 @@ extern rtx expand_shift (enum tree_code, machine_mode, rtx, poly_int64, rtx,
>  extern rtx maybe_expand_shift (enum tree_code, machine_mode, rtx, int, rtx,
>  			       int);
>  #ifdef GCC_OPTABS_H
> -extern rtx expand_divmod (int, enum tree_code, machine_mode, tree, tree,
> -			  rtx, rtx, rtx, int,
> -			  enum optab_methods = OPTAB_LIB_WIDEN);
> +extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx,
> +			  rtx, int, enum optab_methods = OPTAB_LIB_WIDEN);
>  #endif
>  #endif
>  
> diff --git a/gcc/expmed.cc b/gcc/expmed.cc
> index 917360199ca56157cf3c3693b65e93cd9d8ed244..1553ea8e31eb6433025ab18a3a59c169d3b7692f 100644
> --- a/gcc/expmed.cc
> +++ b/gcc/expmed.cc
> @@ -4222,8 +4222,8 @@ expand_sdiv_pow2 (scalar_int_mode mode, rtx op0, HOST_WIDE_INT d)
>  
>  rtx
>  expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
> -	       tree treeop0, tree treeop1, rtx op0, rtx op1, rtx target,
> -	       int unsignedp, enum optab_methods methods)
> +	       rtx op0, rtx op1, rtx target, int unsignedp,
> +	       enum optab_methods methods)
>  {
>    machine_mode compute_mode;
>    rtx tquotient;
> @@ -4375,17 +4375,6 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
>  
>    last_div_const = ! rem_flag && op1_is_constant ? INTVAL (op1) : 0;
>  
> -  /* Check if the target has specific expansions for the division.  */
> -  tree cst;
> -  if (treeop0
> -      && treeop1
> -      && (cst = uniform_integer_cst_p (treeop1))
> -      && targetm.vectorize.can_special_div_by_const (code, TREE_TYPE (treeop0),
> -						     wi::to_wide (cst),
> -						     &target, op0, op1))
> -    return target;
> -
> -
>    /* Now convert to the best mode to use.  */
>    if (compute_mode != mode)
>      {
> @@ -4629,8 +4618,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
>  			    || (optab_handler (sdivmod_optab, int_mode)
>  				!= CODE_FOR_nothing)))
>  		      quotient = expand_divmod (0, TRUNC_DIV_EXPR,
> -						int_mode, treeop0, treeop1,
> -						op0, gen_int_mode (abs_d,
> +						int_mode, op0,
> +						gen_int_mode (abs_d,
>  							      int_mode),
>  						NULL_RTX, 0);
>  		    else
> @@ -4819,8 +4808,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
>  				      size - 1, NULL_RTX, 0);
>  		t3 = force_operand (gen_rtx_MINUS (int_mode, t1, nsign),
>  				    NULL_RTX);
> -		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, treeop0,
> -				    treeop1, t3, op1, NULL_RTX, 0);
> +		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, t3, op1,
> +				    NULL_RTX, 0);
>  		if (t4)
>  		  {
>  		    rtx t5;
> diff --git a/gcc/expr.cc b/gcc/expr.cc
> index 15be1c8db999103bb9e5fa33daa44ae06de5ace8..78d35297e755216339078d5b2280c6e277f26d72 100644
> --- a/gcc/expr.cc
> +++ b/gcc/expr.cc
> @@ -8207,17 +8207,16 @@ force_operand (rtx value, rtx target)
>  	    return expand_divmod (0,
>  				  FLOAT_MODE_P (GET_MODE (value))
>  				  ? RDIV_EXPR : TRUNC_DIV_EXPR,
> -				  GET_MODE (value), NULL, NULL, op1, op2,
> -				  target, 0);
> +				  GET_MODE (value), op1, op2, target, 0);
>  	case MOD:
> -	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
> -				op1, op2, target, 0);
> +	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
> +				target, 0);
>  	case UDIV:
> -	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), NULL, NULL,
> -				op1, op2, target, 1);
> +	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), op1, op2,
> +				target, 1);
>  	case UMOD:
> -	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
> -				op1, op2, target, 1);
> +	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
> +				target, 1);
>  	case ASHIFTRT:
>  	  return expand_simple_binop (GET_MODE (value), code, op1, op2,
>  				      target, 0, OPTAB_LIB_WIDEN);
> @@ -9170,13 +9169,11 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
>        bool speed_p = optimize_insn_for_speed_p ();
>        do_pending_stack_adjust ();
>        start_sequence ();
> -      rtx uns_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
> -				   op0, op1, target, 1);
> +      rtx uns_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 1);
>        rtx_insn *uns_insns = get_insns ();
>        end_sequence ();
>        start_sequence ();
> -      rtx sgn_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
> -				   op0, op1, target, 0);
> +      rtx sgn_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 0);
>        rtx_insn *sgn_insns = get_insns ();
>        end_sequence ();
>        unsigned uns_cost = seq_cost (uns_insns, speed_p);
> @@ -9198,8 +9195,7 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
>        emit_insn (sgn_insns);
>        return sgn_ret;
>      }
> -  return expand_divmod (mod_p, code, mode, treeop0, treeop1,
> -			op0, op1, target, unsignedp);
> +  return expand_divmod (mod_p, code, mode, op0, op1, target, unsignedp);
>  }
>  
>  rtx
> diff --git a/gcc/optabs.cc b/gcc/optabs.cc
> index cf22bfec3f5513f56d22c866231edbf322ff6945..474ccbd7915b4f144cebe0369a6e77082c1e617b 100644
> --- a/gcc/optabs.cc
> +++ b/gcc/optabs.cc
> @@ -1106,9 +1106,8 @@ expand_doubleword_mod (machine_mode mode, rtx op0, rtx op1, bool unsignedp)
>  		return NULL_RTX;
>  	    }
>  	}
> -      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, NULL, NULL,
> -				     sum, gen_int_mode (INTVAL (op1),
> -							word_mode),
> +      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, sum,
> +				     gen_int_mode (INTVAL (op1), word_mode),
>  				     NULL_RTX, 1, OPTAB_DIRECT);
>        if (remainder == NULL_RTX)
>  	return NULL_RTX;
> @@ -1211,8 +1210,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
>  
>    if (op11 != const1_rtx)
>      {
> -      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, NULL, NULL, quot1,
> -				op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
> +      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, quot1, op11,
> +				NULL_RTX, unsignedp, OPTAB_DIRECT);
>        if (rem2 == NULL_RTX)
>  	return NULL_RTX;
>  
> @@ -1226,8 +1225,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
>        if (rem2 == NULL_RTX)
>  	return NULL_RTX;
>  
> -      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, NULL, NULL, quot1,
> -				 op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
> +      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, quot1, op11,
> +				 NULL_RTX, unsignedp, OPTAB_DIRECT);
>        if (quot2 == NULL_RTX)
>  	return NULL_RTX;
>  
> diff --git a/gcc/target.def b/gcc/target.def
> index db8af0cbe81624513f114fc9bbd8be61d855f409..e0a5c7adbd962f5d08ed08d1d81afa2c2baa64a5 100644
> --- a/gcc/target.def
> +++ b/gcc/target.def
> @@ -1905,25 +1905,6 @@ implementation approaches itself.",
>  	const vec_perm_indices &sel),
>   NULL)
>  
> -DEFHOOK
> -(can_special_div_by_const,
> - "This hook is used to test whether the target has a special method of\n\
> -division of vectors of type @var{vectype} using the value @var{constant},\n\
> -and producing a vector of type @var{vectype}.  The division\n\
> -will then not be decomposed by the vectorizer and kept as a div.\n\
> -\n\
> -When the hook is being used to test whether the target supports a special\n\
> -divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook\n\
> -is being used to emit a division, @var{in0} and @var{in1} are the source\n\
> -vectors of type @var{vecttype} and @var{output} is the destination vector of\n\
> -type @var{vectype}.\n\
> -\n\
> -Return true if the operation is possible, emitting instructions for it\n\
> -if rtxes are provided and updating @var{output}.",
> - bool, (enum tree_code, tree vectype, wide_int constant, rtx *output,
> -	rtx in0, rtx in1),
> - default_can_special_div_by_const)
> -
>  /* Return true if the target supports misaligned store/load of a
>     specific factor denoted in the third parameter.  The last parameter
>     is true if the access is defined in a packed struct.  */
> diff --git a/gcc/target.h b/gcc/target.h
> index 03fd03a52075b4836159035ec14078c0aebdd7e9..93691882757232c514fca82b99f913158c2d47b1 100644
> --- a/gcc/target.h
> +++ b/gcc/target.h
> @@ -51,7 +51,6 @@
>  #include "insn-codes.h"
>  #include "tm.h"
>  #include "hard-reg-set.h"
> -#include "tree-core.h"
>  
>  #if CHECKING_P
>  
> diff --git a/gcc/targhooks.h b/gcc/targhooks.h
> index a1df260f5483dc84f18d8f12c5202484a32d5bb7..a6a4809ca91baa5d7fad2244549317a31390f0c2 100644
> --- a/gcc/targhooks.h
> +++ b/gcc/targhooks.h
> @@ -209,8 +209,6 @@ extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
>  extern rtx default_addr_space_convert (rtx, tree, tree);
>  extern unsigned int default_case_values_threshold (void);
>  extern bool default_have_conditional_execution (void);
> -extern bool default_can_special_div_by_const (enum tree_code, tree, wide_int,
> -					      rtx *, rtx, rtx);
>  
>  extern bool default_libc_has_function (enum function_class, tree);
>  extern bool default_libc_has_fast_function (int fcode);
> diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc
> index fe0116521feaf32187e7bc113bf93b1805852c79..211525720a620d6f533e2da91e03877337a931e7 100644
> --- a/gcc/targhooks.cc
> +++ b/gcc/targhooks.cc
> @@ -1840,14 +1840,6 @@ default_have_conditional_execution (void)
>    return HAVE_conditional_execution;
>  }
>  
> -/* Default that no division by constant operations are special.  */
> -bool
> -default_can_special_div_by_const (enum tree_code, tree, wide_int, rtx *, rtx,
> -				  rtx)
> -{
> -  return false;
> -}
> -
>  /* By default we assume that c99 functions are present at the runtime,
>     but sincos is not.  */
>  bool
> diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc
> index 166a248f4b9512d4c6fc8d760b458b7a467f7790..519a824ec727d4d4f28c14077dc3e970bed75ef6 100644
> --- a/gcc/tree-vect-generic.cc
> +++ b/gcc/tree-vect-generic.cc
> @@ -1237,17 +1237,6 @@ expand_vector_operation (gimple_stmt_iterator *gsi, tree type, tree compute_type
>  	  tree rhs2 = gimple_assign_rhs2 (assign);
>  	  tree ret;
>  
> -	  /* Check if the target was going to handle it through the special
> -	     division callback hook.  */
> -	  tree cst = uniform_integer_cst_p (rhs2);
> -	  if (cst &&
> -	      targetm.vectorize.can_special_div_by_const (code, type,
> -							  wi::to_wide (cst),
> -							  NULL,
> -							  NULL_RTX, NULL_RTX))
> -	    return NULL_TREE;
> -
> -
>  	  if (!optimize
>  	      || !VECTOR_INTEGER_TYPE_P (type)
>  	      || TREE_CODE (rhs2) != VECTOR_CST
> diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
> index 6934aebc69f231af24668f0a1c3d140e97f55487..1766ce277d6b88d8aa3be77e7c8abb504a10a735 100644
> --- a/gcc/tree-vect-patterns.cc
> +++ b/gcc/tree-vect-patterns.cc
> @@ -3913,14 +3913,6 @@ vect_recog_divmod_pattern (vec_info *vinfo,
>  
>        return pattern_stmt;
>      }
> -  else if ((cst = uniform_integer_cst_p (oprnd1))
> -	   && targetm.vectorize.can_special_div_by_const (rhs_code, vectype,
> -							  wi::to_wide (cst),
> -							  NULL, NULL_RTX,
> -							  NULL_RTX))
> -    {
> -      return NULL;
> -    }
>  
>    if (prec > HOST_BITS_PER_WIDE_INT
>        || integer_zerop (oprnd1))
> diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
> index eb4ca1f184e374d177eb43d5eb93acf6e6a8fde9..3a0fb5ad898ad42c3867f0b9564fc4e066e50081 100644
> --- a/gcc/tree-vect-stmts.cc
> +++ b/gcc/tree-vect-stmts.cc
> @@ -6263,15 +6263,6 @@ vectorizable_operation (vec_info *vinfo,
>  	}
>        target_support_p = (optab_handler (optab, vec_mode)
>  			  != CODE_FOR_nothing);
> -      tree cst;
> -      if (!target_support_p
> -	  && op1
> -	  && (cst = uniform_integer_cst_p (op1)))
> -	target_support_p
> -	  = targetm.vectorize.can_special_div_by_const (code, vectype,
> -							wi::to_wide (cst),
> -							NULL, NULL_RTX,
> -							NULL_RTX);
>      }
>  
>    bool using_emulated_vectors_p = vect_emulated_vector_p (vectype);
> 
> 
> 
> 
>
diff mbox series

Patch

--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -6137,20 +6137,6 @@  instruction pattern.  There is no need for the hook to handle these two
 implementation approaches itself.
 @end deftypefn
 
-@deftypefn {Target Hook} bool TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST (enum @var{tree_code}, tree @var{vectype}, wide_int @var{constant}, rtx *@var{output}, rtx @var{in0}, rtx @var{in1})
-This hook is used to test whether the target has a special method of
-division of vectors of type @var{vectype} using the value @var{constant},
-and producing a vector of type @var{vectype}.  The division
-will then not be decomposed by the vectorizer and kept as a div.
-
-When the hook is being used to test whether the target supports a special
-divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook
-is being used to emit a division, @var{in0} and @var{in1} are the source
-vectors of type @var{vecttype} and @var{output} is the destination vector of
-type @var{vectype}.
-
-Return true if the operation is possible, emitting instructions for it
-if rtxes are provided and updating @var{output}.
 @end deftypefn
 
 @deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION (unsigned @var{code}, tree @var{vec_type_out}, tree @var{vec_type_in})
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 613b2534149415f442163d599503efaf423b673b..3e07978a02f4e6077adae6cadc93ea4273295f1f 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -4173,7 +4173,6 @@  address;  but often a machine-dependent strategy can generate better code.
 
 @hook TARGET_VECTORIZE_VEC_PERM_CONST
 
-@hook TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST
 
 @hook TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION
 
diff --git a/gcc/explow.cc b/gcc/explow.cc
index 83439b32abe1b9aa4b7983eb629804f97486acbd..be9195b33323ee5597fc212f0befa016eea4573c 100644
--- a/gcc/explow.cc
+++ b/gcc/explow.cc
@@ -1037,7 +1037,7 @@  round_push (rtx size)
      TRUNC_DIV_EXPR.  */
   size = expand_binop (Pmode, add_optab, size, alignm1_rtx,
 		       NULL_RTX, 1, OPTAB_LIB_WIDEN);
-  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, size, align_rtx,
+  size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, size, align_rtx,
 			NULL_RTX, 1);
   size = expand_mult (Pmode, size, align_rtx, NULL_RTX, 1);
 
@@ -1203,7 +1203,7 @@  align_dynamic_address (rtx target, unsigned required_align)
 			 gen_int_mode (required_align / BITS_PER_UNIT - 1,
 				       Pmode),
 			 NULL_RTX, 1, OPTAB_LIB_WIDEN);
-  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, target,
+  target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, target,
 			  gen_int_mode (required_align / BITS_PER_UNIT,
 					Pmode),
 			  NULL_RTX, 1);
diff --git a/gcc/expmed.h b/gcc/expmed.h
index 0419e2dac85850889ce0bee59515e31a80c582de..4dfe635c22ee49f2dba4c53640941628068f3901 100644
--- a/gcc/expmed.h
+++ b/gcc/expmed.h
@@ -710,9 +710,8 @@  extern rtx expand_shift (enum tree_code, machine_mode, rtx, poly_int64, rtx,
 extern rtx maybe_expand_shift (enum tree_code, machine_mode, rtx, int, rtx,
 			       int);
 #ifdef GCC_OPTABS_H
-extern rtx expand_divmod (int, enum tree_code, machine_mode, tree, tree,
-			  rtx, rtx, rtx, int,
-			  enum optab_methods = OPTAB_LIB_WIDEN);
+extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx,
+			  rtx, int, enum optab_methods = OPTAB_LIB_WIDEN);
 #endif
 #endif
 
diff --git a/gcc/expmed.cc b/gcc/expmed.cc
index 917360199ca56157cf3c3693b65e93cd9d8ed244..1553ea8e31eb6433025ab18a3a59c169d3b7692f 100644
--- a/gcc/expmed.cc
+++ b/gcc/expmed.cc
@@ -4222,8 +4222,8 @@  expand_sdiv_pow2 (scalar_int_mode mode, rtx op0, HOST_WIDE_INT d)
 
 rtx
 expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
-	       tree treeop0, tree treeop1, rtx op0, rtx op1, rtx target,
-	       int unsignedp, enum optab_methods methods)
+	       rtx op0, rtx op1, rtx target, int unsignedp,
+	       enum optab_methods methods)
 {
   machine_mode compute_mode;
   rtx tquotient;
@@ -4375,17 +4375,6 @@  expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 
   last_div_const = ! rem_flag && op1_is_constant ? INTVAL (op1) : 0;
 
-  /* Check if the target has specific expansions for the division.  */
-  tree cst;
-  if (treeop0
-      && treeop1
-      && (cst = uniform_integer_cst_p (treeop1))
-      && targetm.vectorize.can_special_div_by_const (code, TREE_TYPE (treeop0),
-						     wi::to_wide (cst),
-						     &target, op0, op1))
-    return target;
-
-
   /* Now convert to the best mode to use.  */
   if (compute_mode != mode)
     {
@@ -4629,8 +4618,8 @@  expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 			    || (optab_handler (sdivmod_optab, int_mode)
 				!= CODE_FOR_nothing)))
 		      quotient = expand_divmod (0, TRUNC_DIV_EXPR,
-						int_mode, treeop0, treeop1,
-						op0, gen_int_mode (abs_d,
+						int_mode, op0,
+						gen_int_mode (abs_d,
 							      int_mode),
 						NULL_RTX, 0);
 		    else
@@ -4819,8 +4808,8 @@  expand_divmod (int rem_flag, enum tree_code code, machine_mode mode,
 				      size - 1, NULL_RTX, 0);
 		t3 = force_operand (gen_rtx_MINUS (int_mode, t1, nsign),
 				    NULL_RTX);
-		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, treeop0,
-				    treeop1, t3, op1, NULL_RTX, 0);
+		t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, t3, op1,
+				    NULL_RTX, 0);
 		if (t4)
 		  {
 		    rtx t5;
diff --git a/gcc/expr.cc b/gcc/expr.cc
index 15be1c8db999103bb9e5fa33daa44ae06de5ace8..78d35297e755216339078d5b2280c6e277f26d72 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -8207,17 +8207,16 @@  force_operand (rtx value, rtx target)
 	    return expand_divmod (0,
 				  FLOAT_MODE_P (GET_MODE (value))
 				  ? RDIV_EXPR : TRUNC_DIV_EXPR,
-				  GET_MODE (value), NULL, NULL, op1, op2,
-				  target, 0);
+				  GET_MODE (value), op1, op2, target, 0);
 	case MOD:
-	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 0);
+	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
+				target, 0);
 	case UDIV:
-	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 1);
+	  return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), op1, op2,
+				target, 1);
 	case UMOD:
-	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL,
-				op1, op2, target, 1);
+	  return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2,
+				target, 1);
 	case ASHIFTRT:
 	  return expand_simple_binop (GET_MODE (value), code, op1, op2,
 				      target, 0, OPTAB_LIB_WIDEN);
@@ -9170,13 +9169,11 @@  expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
       bool speed_p = optimize_insn_for_speed_p ();
       do_pending_stack_adjust ();
       start_sequence ();
-      rtx uns_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
-				   op0, op1, target, 1);
+      rtx uns_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 1);
       rtx_insn *uns_insns = get_insns ();
       end_sequence ();
       start_sequence ();
-      rtx sgn_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1,
-				   op0, op1, target, 0);
+      rtx sgn_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 0);
       rtx_insn *sgn_insns = get_insns ();
       end_sequence ();
       unsigned uns_cost = seq_cost (uns_insns, speed_p);
@@ -9198,8 +9195,7 @@  expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0,
       emit_insn (sgn_insns);
       return sgn_ret;
     }
-  return expand_divmod (mod_p, code, mode, treeop0, treeop1,
-			op0, op1, target, unsignedp);
+  return expand_divmod (mod_p, code, mode, op0, op1, target, unsignedp);
 }
 
 rtx
diff --git a/gcc/optabs.cc b/gcc/optabs.cc
index cf22bfec3f5513f56d22c866231edbf322ff6945..474ccbd7915b4f144cebe0369a6e77082c1e617b 100644
--- a/gcc/optabs.cc
+++ b/gcc/optabs.cc
@@ -1106,9 +1106,8 @@  expand_doubleword_mod (machine_mode mode, rtx op0, rtx op1, bool unsignedp)
 		return NULL_RTX;
 	    }
 	}
-      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, NULL, NULL,
-				     sum, gen_int_mode (INTVAL (op1),
-							word_mode),
+      rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, sum,
+				     gen_int_mode (INTVAL (op1), word_mode),
 				     NULL_RTX, 1, OPTAB_DIRECT);
       if (remainder == NULL_RTX)
 	return NULL_RTX;
@@ -1211,8 +1210,8 @@  expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
 
   if (op11 != const1_rtx)
     {
-      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, NULL, NULL, quot1,
-				op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
+      rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, quot1, op11,
+				NULL_RTX, unsignedp, OPTAB_DIRECT);
       if (rem2 == NULL_RTX)
 	return NULL_RTX;
 
@@ -1226,8 +1225,8 @@  expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem,
       if (rem2 == NULL_RTX)
 	return NULL_RTX;
 
-      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, NULL, NULL, quot1,
-				 op11, NULL_RTX, unsignedp, OPTAB_DIRECT);
+      rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, quot1, op11,
+				 NULL_RTX, unsignedp, OPTAB_DIRECT);
       if (quot2 == NULL_RTX)
 	return NULL_RTX;
 
diff --git a/gcc/target.def b/gcc/target.def
index db8af0cbe81624513f114fc9bbd8be61d855f409..e0a5c7adbd962f5d08ed08d1d81afa2c2baa64a5 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -1905,25 +1905,6 @@  implementation approaches itself.",
 	const vec_perm_indices &sel),
  NULL)
 
-DEFHOOK
-(can_special_div_by_const,
- "This hook is used to test whether the target has a special method of\n\
-division of vectors of type @var{vectype} using the value @var{constant},\n\
-and producing a vector of type @var{vectype}.  The division\n\
-will then not be decomposed by the vectorizer and kept as a div.\n\
-\n\
-When the hook is being used to test whether the target supports a special\n\
-divide, @var{in0}, @var{in1}, and @var{output} are all null.  When the hook\n\
-is being used to emit a division, @var{in0} and @var{in1} are the source\n\
-vectors of type @var{vecttype} and @var{output} is the destination vector of\n\
-type @var{vectype}.\n\
-\n\
-Return true if the operation is possible, emitting instructions for it\n\
-if rtxes are provided and updating @var{output}.",
- bool, (enum tree_code, tree vectype, wide_int constant, rtx *output,
-	rtx in0, rtx in1),
- default_can_special_div_by_const)
-
 /* Return true if the target supports misaligned store/load of a
    specific factor denoted in the third parameter.  The last parameter
    is true if the access is defined in a packed struct.  */
diff --git a/gcc/target.h b/gcc/target.h
index 03fd03a52075b4836159035ec14078c0aebdd7e9..93691882757232c514fca82b99f913158c2d47b1 100644
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -51,7 +51,6 @@ 
 #include "insn-codes.h"
 #include "tm.h"
 #include "hard-reg-set.h"
-#include "tree-core.h"
 
 #if CHECKING_P
 
diff --git a/gcc/targhooks.h b/gcc/targhooks.h
index a1df260f5483dc84f18d8f12c5202484a32d5bb7..a6a4809ca91baa5d7fad2244549317a31390f0c2 100644
--- a/gcc/targhooks.h
+++ b/gcc/targhooks.h
@@ -209,8 +209,6 @@  extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
 extern rtx default_addr_space_convert (rtx, tree, tree);
 extern unsigned int default_case_values_threshold (void);
 extern bool default_have_conditional_execution (void);
-extern bool default_can_special_div_by_const (enum tree_code, tree, wide_int,
-					      rtx *, rtx, rtx);
 
 extern bool default_libc_has_function (enum function_class, tree);
 extern bool default_libc_has_fast_function (int fcode);
diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc
index fe0116521feaf32187e7bc113bf93b1805852c79..211525720a620d6f533e2da91e03877337a931e7 100644
--- a/gcc/targhooks.cc
+++ b/gcc/targhooks.cc
@@ -1840,14 +1840,6 @@  default_have_conditional_execution (void)
   return HAVE_conditional_execution;
 }
 
-/* Default that no division by constant operations are special.  */
-bool
-default_can_special_div_by_const (enum tree_code, tree, wide_int, rtx *, rtx,
-				  rtx)
-{
-  return false;
-}
-
 /* By default we assume that c99 functions are present at the runtime,
    but sincos is not.  */
 bool
diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc
index 166a248f4b9512d4c6fc8d760b458b7a467f7790..519a824ec727d4d4f28c14077dc3e970bed75ef6 100644
--- a/gcc/tree-vect-generic.cc
+++ b/gcc/tree-vect-generic.cc
@@ -1237,17 +1237,6 @@  expand_vector_operation (gimple_stmt_iterator *gsi, tree type, tree compute_type
 	  tree rhs2 = gimple_assign_rhs2 (assign);
 	  tree ret;
 
-	  /* Check if the target was going to handle it through the special
-	     division callback hook.  */
-	  tree cst = uniform_integer_cst_p (rhs2);
-	  if (cst &&
-	      targetm.vectorize.can_special_div_by_const (code, type,
-							  wi::to_wide (cst),
-							  NULL,
-							  NULL_RTX, NULL_RTX))
-	    return NULL_TREE;
-
-
 	  if (!optimize
 	      || !VECTOR_INTEGER_TYPE_P (type)
 	      || TREE_CODE (rhs2) != VECTOR_CST
diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc
index 6934aebc69f231af24668f0a1c3d140e97f55487..1766ce277d6b88d8aa3be77e7c8abb504a10a735 100644
--- a/gcc/tree-vect-patterns.cc
+++ b/gcc/tree-vect-patterns.cc
@@ -3913,14 +3913,6 @@  vect_recog_divmod_pattern (vec_info *vinfo,
 
       return pattern_stmt;
     }
-  else if ((cst = uniform_integer_cst_p (oprnd1))
-	   && targetm.vectorize.can_special_div_by_const (rhs_code, vectype,
-							  wi::to_wide (cst),
-							  NULL, NULL_RTX,
-							  NULL_RTX))
-    {
-      return NULL;
-    }
 
   if (prec > HOST_BITS_PER_WIDE_INT
       || integer_zerop (oprnd1))
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index eb4ca1f184e374d177eb43d5eb93acf6e6a8fde9..3a0fb5ad898ad42c3867f0b9564fc4e066e50081 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -6263,15 +6263,6 @@  vectorizable_operation (vec_info *vinfo,
 	}
       target_support_p = (optab_handler (optab, vec_mode)
 			  != CODE_FOR_nothing);
-      tree cst;
-      if (!target_support_p
-	  && op1
-	  && (cst = uniform_integer_cst_p (op1)))
-	target_support_p
-	  = targetm.vectorize.can_special_div_by_const (code, vectype,
-							wi::to_wide (cst),
-							NULL, NULL_RTX,
-							NULL_RTX);
     }
 
   bool using_emulated_vectors_p = vect_emulated_vector_p (vectype);