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Remove VEC_RSHIFT_EXPR tree code, now unused

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* fold-const.c (const_binop): Remove code handling VEC_RSHIFT_EXPR.
	* tree-cfg.c (verify_gimple_assign_binary): Likewise.
	* tree-inline.c (estimate_operator_cost): Likewise.
	* tree-pretty-print.c (dump_generic_node, op_code_prio, op_symbol_code):
	Likewise.

	* tree-vect-generic.c (expand_vector_operations_1): Remove assertion
	against VEC_RSHIFT_EXPR.

	* optabs.h (expand_vec_shift_expr): Remove.
	* optabs.c (optab_for_tree_code): Remove case VEC_RSHIFT_EXPR.
	(expand_vec_shift_expr): Remove.
	* tree.def (VEC_RSHIFT_EXPR): Remove

From-SVN: r217510
This commit is contained in:
Alan Lawrence 2014-11-13 16:35:06 +00:00 committed by Alan Lawrence
parent cf7aa6a3b7
commit 1c4188463c
11 changed files with 23 additions and 118 deletions
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16
gcc/ChangeLog
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@ -1,3 +1,19 @@
2014-11-13 Alan Lawrence <alan.lawrence@arm.com>
* fold-const.c (const_binop): Remove code handling VEC_RSHIFT_EXPR.
* tree-cfg.c (verify_gimple_assign_binary): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node, op_code_prio, op_symbol_code):
Likewise.
* tree-vect-generic.c (expand_vector_operations_1): Remove assertion
against VEC_RSHIFT_EXPR.
* optabs.h (expand_vec_shift_expr): Remove.
* optabs.c (optab_for_tree_code): Remove case VEC_RSHIFT_EXPR.
(expand_vec_shift_expr): Remove.
* tree.def (VEC_RSHIFT_EXPR): Remove
2014-11-13 Alan Lawrence <alan.lawrence@arm.com>
* optabs.c (can_vec_perm_p): Update comment, does not consider vec_shr.

1
gcc/cfgexpand.c
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@ -4659,7 +4659,6 @@ expand_debug_expr (tree exp)
case VEC_PACK_FIX_TRUNC_EXPR:
case VEC_PACK_SAT_EXPR:
case VEC_PACK_TRUNC_EXPR:
case VEC_RSHIFT_EXPR:
case VEC_UNPACK_FLOAT_HI_EXPR:
case VEC_UNPACK_FLOAT_LO_EXPR:
case VEC_UNPACK_HI_EXPR:

6
gcc/expr.c
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@ -9142,12 +9142,6 @@ expand_expr_real_2 (sepops ops, rtx target, machine_mode tmode,
return temp;
}
case VEC_RSHIFT_EXPR:
{
target = expand_vec_shift_expr (ops, target);
return target;
}
case VEC_UNPACK_HI_EXPR:
case VEC_UNPACK_LO_EXPR:
{

41
gcc/fold-const.c
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@ -1418,44 +1418,17 @@ const_binop (enum tree_code code, tree arg1, tree arg2)
int count = TYPE_VECTOR_SUBPARTS (type), i;
tree *elts = XALLOCAVEC (tree, count);
if (code == VEC_RSHIFT_EXPR)
for (i = 0; i < count; i++)
{
if (!tree_fits_uhwi_p (arg2))
return NULL_TREE;
tree elem1 = VECTOR_CST_ELT (arg1, i);
unsigned HOST_WIDE_INT shiftc = tree_to_uhwi (arg2);
unsigned HOST_WIDE_INT outerc = tree_to_uhwi (TYPE_SIZE (type));
unsigned HOST_WIDE_INT innerc
= tree_to_uhwi (TYPE_SIZE (TREE_TYPE (type)));
if (shiftc >= outerc || (shiftc % innerc) != 0)
elts[i] = const_binop (code, elem1, arg2);
/* It is possible that const_binop cannot handle the given
code and return NULL_TREE. */
if (elts[i] == NULL_TREE)
return NULL_TREE;
int offset = shiftc / innerc;
/* The direction of VEC_RSHIFT_EXPR is endian dependent.
For reductions, if !BYTES_BIG_ENDIAN then compiler picks first
vector element, but last element if BYTES_BIG_ENDIAN. */
if (BYTES_BIG_ENDIAN)
offset = -offset;
tree zero = build_zero_cst (TREE_TYPE (type));
for (i = 0; i < count; i++)
{
if (i + offset < 0 || i + offset >= count)
elts[i] = zero;
else
elts[i] = VECTOR_CST_ELT (arg1, i + offset);
}
}
else
for (i = 0; i < count; i++)
{
tree elem1 = VECTOR_CST_ELT (arg1, i);
elts[i] = const_binop (code, elem1, arg2);
/* It is possible that const_binop cannot handle the given
code and return NULL_TREE */
if (elts[i] == NULL_TREE)
return NULL_TREE;
}
return build_vector (type, elts);
}

31
gcc/optabs.c
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@ -520,9 +520,6 @@ optab_for_tree_code (enum tree_code code, const_tree type,
case REDUC_PLUS_EXPR:
return reduc_plus_scal_optab;
case VEC_RSHIFT_EXPR:
return vec_shr_optab;
case VEC_WIDEN_MULT_HI_EXPR:
return TYPE_UNSIGNED (type) ?
vec_widen_umult_hi_optab : vec_widen_smult_hi_optab;
@ -771,34 +768,6 @@ force_expand_binop (machine_mode mode, optab binoptab,
return true;
}
/* Generate insns for VEC_RSHIFT_EXPR. */
rtx
expand_vec_shift_expr (sepops ops, rtx target)
{
struct expand_operand eops[3];
enum insn_code icode;
rtx rtx_op1, rtx_op2;
machine_mode mode = TYPE_MODE (ops->type);
tree vec_oprnd = ops->op0;
tree shift_oprnd = ops->op1;
gcc_assert (ops->code == VEC_RSHIFT_EXPR);
icode = optab_handler (vec_shr_optab, mode);
gcc_assert (icode != CODE_FOR_nothing);
rtx_op1 = expand_normal (vec_oprnd);
rtx_op2 = expand_normal (shift_oprnd);
create_output_operand (&eops[0], target, mode);
create_input_operand (&eops[1], rtx_op1, GET_MODE (rtx_op1));
create_convert_operand_from_type (&eops[2], rtx_op2, TREE_TYPE (shift_oprnd));
expand_insn (icode, 3, eops);
return eops[0].value;
}
/* Create a new vector value in VMODE with all elements set to OP. The
mode of OP must be the element mode of VMODE. If OP is a constant,
then the return value will be a constant. */

2
gcc/optabs.h
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@ -287,8 +287,6 @@ extern rtx simplify_expand_binop (machine_mode mode, optab binoptab,
enum optab_methods methods);
extern bool force_expand_binop (machine_mode, optab, rtx, rtx, rtx, int,
enum optab_methods);
/* Generate code for VEC_RSHIFT_EXPR. */
extern rtx expand_vec_shift_expr (struct separate_ops *, rtx);
/* Generate code for a simple binary or unary operation. "Simple" in
this case means "can be unambiguously described by a (mode, code)

32
gcc/tree-cfg.c
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@ -3675,38 +3675,6 @@ verify_gimple_assign_binary (gimple stmt)
return false;
}
case VEC_RSHIFT_EXPR:
{
if (TREE_CODE (rhs1_type) != VECTOR_TYPE
|| !(INTEGRAL_TYPE_P (TREE_TYPE (rhs1_type))
|| POINTER_TYPE_P (TREE_TYPE (rhs1_type))
|| FIXED_POINT_TYPE_P (TREE_TYPE (rhs1_type))
|| SCALAR_FLOAT_TYPE_P (TREE_TYPE (rhs1_type)))
|| (!INTEGRAL_TYPE_P (rhs2_type)
&& (TREE_CODE (rhs2_type) != VECTOR_TYPE
|| !INTEGRAL_TYPE_P (TREE_TYPE (rhs2_type))))
|| !useless_type_conversion_p (lhs_type, rhs1_type))
{
error ("type mismatch in vector shift expression");
debug_generic_expr (lhs_type);
debug_generic_expr (rhs1_type);
debug_generic_expr (rhs2_type);
return true;
}
/* For shifting a vector of non-integral components we
only allow shifting by a constant multiple of the element size. */
if (!INTEGRAL_TYPE_P (TREE_TYPE (rhs1_type))
&& (TREE_CODE (rhs2) != INTEGER_CST
|| !div_if_zero_remainder (rhs2,
TYPE_SIZE (TREE_TYPE (rhs1_type)))))
{
error ("non-element sized vector shift of floating point vector");
return true;
}
return false;
}
case WIDEN_LSHIFT_EXPR:
{
if (!INTEGRAL_TYPE_P (lhs_type)

1
gcc/tree-inline.c
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@ -3807,7 +3807,6 @@ estimate_operator_cost (enum tree_code code, eni_weights *weights,
case RSHIFT_EXPR:
case LROTATE_EXPR:
case RROTATE_EXPR:
case VEC_RSHIFT_EXPR:
case BIT_IOR_EXPR:
case BIT_XOR_EXPR:

5
gcc/tree-pretty-print.c
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@ -1858,7 +1858,6 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
case RSHIFT_EXPR:
case LROTATE_EXPR:
case RROTATE_EXPR:
case VEC_RSHIFT_EXPR:
case WIDEN_LSHIFT_EXPR:
case BIT_IOR_EXPR:
case BIT_XOR_EXPR:
@ -3038,7 +3037,6 @@ op_code_prio (enum tree_code code)
case REDUC_MAX_EXPR:
case REDUC_MIN_EXPR:
case REDUC_PLUS_EXPR:
case VEC_RSHIFT_EXPR:
case VEC_UNPACK_HI_EXPR:
case VEC_UNPACK_LO_EXPR:
case VEC_UNPACK_FLOAT_HI_EXPR:
@ -3148,9 +3146,6 @@ op_symbol_code (enum tree_code code)
case RROTATE_EXPR:
return "r>>";
case VEC_RSHIFT_EXPR:
return "v>>";
case WIDEN_LSHIFT_EXPR:
return "w<<";

1
gcc/tree-vect-generic.c
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@ -1604,7 +1604,6 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi)
if (compute_type == type)
return;
gcc_assert (code != VEC_RSHIFT_EXPR);
new_rhs = expand_vector_operation (gsi, type, compute_type, stmt, code);
/* Leave expression untouched for later expansion. */

5
gcc/tree.def
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@ -1251,11 +1251,6 @@ DEFTREECODE (WIDEN_LSHIFT_EXPR, "widen_lshift_expr", tcc_binary, 2)
before adding operand three. */
DEFTREECODE (FMA_EXPR, "fma_expr", tcc_expression, 3)
/* Whole vector right shift in bits.
Operand 0 is a vector to be shifted.
Operand 1 is an integer shift amount in bits. */
DEFTREECODE (VEC_RSHIFT_EXPR, "vec_rshift_expr", tcc_binary, 2)
/* Widening vector multiplication.
The two operands are vectors with N elements of size S. Multiplying the
elements of the two vectors will result in N products of size 2*S.