static tree split_tree (tree, enum tree_code, tree *, tree *, tree *, int);
static tree associate_trees (tree, tree, enum tree_code, tree);
static tree const_binop (enum tree_code, tree, tree, int);
-static enum tree_code invert_tree_comparison (enum tree_code, bool);
static enum comparison_code comparison_to_compcode (enum tree_code);
static enum tree_code compcode_to_comparison (enum comparison_code);
static tree combine_comparisons (enum tree_code, enum tree_code,
add_double (lnum_orig, hnum_orig, *lrem, *hrem, lrem, hrem);
return overflow;
}
+
+/* If ARG2 divides ARG1 with zero remainder, carries out the division
+ of type CODE and returns the quotient.
+ Otherwise returns NULL_TREE. */
+
+static tree
+div_if_zero_remainder (enum tree_code code, tree arg1, tree arg2)
+{
+ unsigned HOST_WIDE_INT int1l, int2l;
+ HOST_WIDE_INT int1h, int2h;
+ unsigned HOST_WIDE_INT quol, reml;
+ HOST_WIDE_INT quoh, remh;
+ tree type = TREE_TYPE (arg1);
+ int uns = TYPE_UNSIGNED (type);
+
+ int1l = TREE_INT_CST_LOW (arg1);
+ int1h = TREE_INT_CST_HIGH (arg1);
+ int2l = TREE_INT_CST_LOW (arg2);
+ int2h = TREE_INT_CST_HIGH (arg2);
+
+ div_and_round_double (code, uns, int1l, int1h, int2l, int2h,
+ &quol, &quoh, &reml, &remh);
+ if (remh != 0 || reml != 0)
+ return NULL_TREE;
+
+ return build_int_cst_wide (type, quol, quoh);
+}
\f
/* Return true if built-in mathematical function specified by CODE
preserves the sign of it argument, i.e. -f(x) == f(-x). */
case RDIV_EXPR:
{
+ tree t1, t2, real, imag;
tree magsquared
= const_binop (PLUS_EXPR,
const_binop (MULT_EXPR, r2, r2, notrunc),
const_binop (MULT_EXPR, i2, i2, notrunc),
notrunc);
- t = build_complex (type,
- const_binop
- (INTEGRAL_TYPE_P (TREE_TYPE (r1))
- ? TRUNC_DIV_EXPR : RDIV_EXPR,
- const_binop (PLUS_EXPR,
- const_binop (MULT_EXPR, r1, r2,
- notrunc),
- const_binop (MULT_EXPR, i1, i2,
- notrunc),
- notrunc),
- magsquared, notrunc),
- const_binop
- (INTEGRAL_TYPE_P (TREE_TYPE (r1))
- ? TRUNC_DIV_EXPR : RDIV_EXPR,
- const_binop (MINUS_EXPR,
- const_binop (MULT_EXPR, i1, r2,
- notrunc),
- const_binop (MULT_EXPR, r1, i2,
- notrunc),
- notrunc),
- magsquared, notrunc));
+ t1 = const_binop (PLUS_EXPR,
+ const_binop (MULT_EXPR, r1, r2, notrunc),
+ const_binop (MULT_EXPR, i1, i2, notrunc),
+ notrunc);
+ t2 = const_binop (MINUS_EXPR,
+ const_binop (MULT_EXPR, i1, r2, notrunc),
+ const_binop (MULT_EXPR, r1, i2, notrunc),
+ notrunc);
+
+ if (INTEGRAL_TYPE_P (TREE_TYPE (r1)))
+ {
+ real = const_binop (TRUNC_DIV_EXPR, t1, magsquared, notrunc);
+ imag = const_binop (TRUNC_DIV_EXPR, t2, magsquared, notrunc);
+ }
+ else
+ {
+ real = const_binop (RDIV_EXPR, t1, magsquared, notrunc);
+ imag = const_binop (RDIV_EXPR, t2, magsquared, notrunc);
+ if (!real || !imag)
+ return NULL_TREE;
+ }
+
+ t = build_complex (type, real, imag);
}
break;
comparisons, except for NE_EXPR and EQ_EXPR, so we receive a machine mode
as well: if reversing the comparison is unsafe, return ERROR_MARK. */
-static enum tree_code
+enum tree_code
invert_tree_comparison (enum tree_code code, bool honor_nans)
{
if (honor_nans && flag_trapping_math)
v2 = TREE_CHAIN (v2);
}
- return 1;
+ return v1 == v2;
}
case COMPLEX_CST:
return fold_build2 (TREE_CODE (arg0), type, common,
fold_build2 (code, type, left, right));
}
+
+/* Knowing that ARG0 and ARG1 are both RDIV_EXPRs, simplify a binary operation
+ with code CODE. This optimization is unsafe. */
+static tree
+distribute_real_division (enum tree_code code, tree type, tree arg0, tree arg1)
+{
+ bool mul0 = TREE_CODE (arg0) == MULT_EXPR;
+ bool mul1 = TREE_CODE (arg1) == MULT_EXPR;
+
+ /* (A / C) +- (B / C) -> (A +- B) / C. */
+ if (mul0 == mul1
+ && operand_equal_p (TREE_OPERAND (arg0, 1),
+ TREE_OPERAND (arg1, 1), 0))
+ return fold_build2 (mul0 ? MULT_EXPR : RDIV_EXPR, type,
+ fold_build2 (code, type,
+ TREE_OPERAND (arg0, 0),
+ TREE_OPERAND (arg1, 0)),
+ TREE_OPERAND (arg0, 1));
+
+ /* (A / C1) +- (A / C2) -> A * (1 / C1 +- 1 / C2). */
+ if (operand_equal_p (TREE_OPERAND (arg0, 0),
+ TREE_OPERAND (arg1, 0), 0)
+ && TREE_CODE (TREE_OPERAND (arg0, 1)) == REAL_CST
+ && TREE_CODE (TREE_OPERAND (arg1, 1)) == REAL_CST)
+ {
+ REAL_VALUE_TYPE r0, r1;
+ r0 = TREE_REAL_CST (TREE_OPERAND (arg0, 1));
+ r1 = TREE_REAL_CST (TREE_OPERAND (arg1, 1));
+ if (!mul0)
+ real_arithmetic (&r0, RDIV_EXPR, &dconst1, &r0);
+ if (!mul1)
+ real_arithmetic (&r1, RDIV_EXPR, &dconst1, &r1);
+ real_arithmetic (&r0, code, &r0, &r1);
+ return fold_build2 (MULT_EXPR, type,
+ TREE_OPERAND (arg0, 0),
+ build_real (type, r0));
+ }
+
+ return NULL_TREE;
+}
\f
/* Return a BIT_FIELD_REF of type TYPE to refer to BITSIZE bits of INNER
starting at BITPOS. The field is unsigned if UNSIGNEDP is nonzero. */
/* Return true if expr looks like an ARRAY_REF and set base and
offset to the appropriate trees. If there is no offset,
- offset is set to NULL_TREE. */
+ offset is set to NULL_TREE. Base will be canonicalized to
+ something you can get the element type from using
+ TREE_TYPE (TREE_TYPE (base)). */
static bool
extract_array_ref (tree expr, tree *base, tree *offset)
{
- /* We have to be careful with stripping nops as with the
- base type the meaning of the offset can change. */
- tree inner_expr = expr;
- STRIP_NOPS (inner_expr);
/* One canonical form is a PLUS_EXPR with the first
argument being an ADDR_EXPR with a possible NOP_EXPR
attached. */
if (TREE_CODE (expr) == PLUS_EXPR)
{
tree op0 = TREE_OPERAND (expr, 0);
+ tree inner_base, dummy1;
+ /* Strip NOP_EXPRs here because the C frontends and/or
+ folders present us (int *)&x.a + 4B possibly. */
STRIP_NOPS (op0);
- if (TREE_CODE (op0) == ADDR_EXPR)
+ if (extract_array_ref (op0, &inner_base, &dummy1))
{
- *base = TREE_OPERAND (expr, 0);
- *offset = TREE_OPERAND (expr, 1);
+ *base = inner_base;
+ if (dummy1 == NULL_TREE)
+ *offset = TREE_OPERAND (expr, 1);
+ else
+ *offset = fold_build2 (PLUS_EXPR, TREE_TYPE (expr),
+ dummy1, TREE_OPERAND (expr, 1));
return true;
}
}
offset. For other arguments to the ADDR_EXPR we assume
zero offset and as such do not care about the ADDR_EXPR
type and strip possible nops from it. */
- else if (TREE_CODE (inner_expr) == ADDR_EXPR)
+ else if (TREE_CODE (expr) == ADDR_EXPR)
{
- tree op0 = TREE_OPERAND (inner_expr, 0);
+ tree op0 = TREE_OPERAND (expr, 0);
if (TREE_CODE (op0) == ARRAY_REF)
{
- *base = build_fold_addr_expr (TREE_OPERAND (op0, 0));
+ *base = TREE_OPERAND (op0, 0);
*offset = TREE_OPERAND (op0, 1);
}
else
{
- *base = inner_expr;
+ /* Handle array-to-pointer decay as &a. */
+ if (TREE_CODE (TREE_TYPE (op0)) == ARRAY_TYPE)
+ *base = TREE_OPERAND (expr, 0);
+ else
+ *base = expr;
*offset = NULL_TREE;
}
return true;
}
+ /* The next canonical form is a VAR_DECL with POINTER_TYPE. */
+ else if (SSA_VAR_P (expr)
+ && TREE_CODE (TREE_TYPE (expr)) == POINTER_TYPE)
+ {
+ *base = expr;
+ *offset = NULL_TREE;
+ return true;
+ }
return false;
}
}
/* Tries to replace &a[idx] CODE s * delta with &a[idx CODE delta], if s is
- step of the array. ADDR is the address. MULT is the multiplicative expression.
+ step of the array. Reconstructs s and delta in the case of s * delta
+ being an integer constant (and thus already folded).
+ ADDR is the address. MULT is the multiplicative expression.
If the function succeeds, the new address expression is returned. Otherwise
NULL_TREE is returned. */
static tree
-try_move_mult_to_index (enum tree_code code, tree addr, tree mult)
+try_move_mult_to_index (enum tree_code code, tree addr, tree op1)
{
tree s, delta, step;
- tree arg0 = TREE_OPERAND (mult, 0), arg1 = TREE_OPERAND (mult, 1);
tree ref = TREE_OPERAND (addr, 0), pref;
tree ret, pos;
tree itype;
- STRIP_NOPS (arg0);
- STRIP_NOPS (arg1);
-
- if (TREE_CODE (arg0) == INTEGER_CST)
+ /* Canonicalize op1 into a possibly non-constant delta
+ and an INTEGER_CST s. */
+ if (TREE_CODE (op1) == MULT_EXPR)
{
- s = arg0;
- delta = arg1;
+ tree arg0 = TREE_OPERAND (op1, 0), arg1 = TREE_OPERAND (op1, 1);
+
+ STRIP_NOPS (arg0);
+ STRIP_NOPS (arg1);
+
+ if (TREE_CODE (arg0) == INTEGER_CST)
+ {
+ s = arg0;
+ delta = arg1;
+ }
+ else if (TREE_CODE (arg1) == INTEGER_CST)
+ {
+ s = arg1;
+ delta = arg0;
+ }
+ else
+ return NULL_TREE;
}
- else if (TREE_CODE (arg1) == INTEGER_CST)
+ else if (TREE_CODE (op1) == INTEGER_CST)
{
- s = arg1;
- delta = arg0;
+ delta = op1;
+ s = NULL_TREE;
}
else
- return NULL_TREE;
+ {
+ /* Simulate we are delta * 1. */
+ delta = op1;
+ s = integer_one_node;
+ }
for (;; ref = TREE_OPERAND (ref, 0))
{
if (TREE_CODE (ref) == ARRAY_REF)
{
- step = array_ref_element_size (ref);
-
- if (TREE_CODE (step) != INTEGER_CST)
+ itype = TYPE_DOMAIN (TREE_TYPE (TREE_OPERAND (ref, 0)));
+ if (! itype)
continue;
- itype = TREE_TYPE (step);
-
- /* If the type sizes do not match, we might run into problems
- when one of them would overflow. */
- if (TYPE_PRECISION (itype) != TYPE_PRECISION (TREE_TYPE (s)))
+ step = array_ref_element_size (ref);
+ if (TREE_CODE (step) != INTEGER_CST)
continue;
- if (!operand_equal_p (step, fold_convert (itype, s), 0))
- continue;
+ if (s)
+ {
+ if (! tree_int_cst_equal (step, s))
+ continue;
+ }
+ else
+ {
+ /* Try if delta is a multiple of step. */
+ tree tmp = div_if_zero_remainder (EXACT_DIV_EXPR, delta, step);
+ if (! tmp)
+ continue;
+ delta = tmp;
+ }
- delta = fold_convert (itype, delta);
break;
}
}
TREE_OPERAND (pos, 1) = fold_build2 (code, itype,
- TREE_OPERAND (pos, 1),
- delta);
+ fold_convert (itype,
+ TREE_OPERAND (pos, 1)),
+ fold_convert (itype, delta));
return build1 (ADDR_EXPR, TREE_TYPE (addr), ret);
}
/* Try replacing &a[i1] + c * i2 with &a[i1 + i2], if c is step
of the array. Loop optimizer sometimes produce this type of
expressions. */
- if (TREE_CODE (arg0) == ADDR_EXPR
- && TREE_CODE (arg1) == MULT_EXPR)
+ if (TREE_CODE (arg0) == ADDR_EXPR)
{
tem = try_move_mult_to_index (PLUS_EXPR, arg0, arg1);
if (tem)
return fold_convert (type, fold (tem));
}
- else if (TREE_CODE (arg1) == ADDR_EXPR
- && TREE_CODE (arg0) == MULT_EXPR)
+ else if (TREE_CODE (arg1) == ADDR_EXPR)
{
tem = try_move_mult_to_index (PLUS_EXPR, arg1, arg0);
if (tem)
fold_convert (type, tem));
}
+ if (flag_unsafe_math_optimizations
+ && (TREE_CODE (arg0) == RDIV_EXPR || TREE_CODE (arg0) == MULT_EXPR)
+ && (TREE_CODE (arg1) == RDIV_EXPR || TREE_CODE (arg1) == MULT_EXPR)
+ && (tem = distribute_real_division (code, type, arg0, arg1)))
+ return tem;
+
/* Convert x+x into x*2.0. */
if (operand_equal_p (arg0, arg1, 0)
&& SCALAR_FLOAT_TYPE_P (type))
&& (TREE_CODE (arg1) != REAL_CST
|| REAL_VALUE_NEGATIVE (TREE_REAL_CST (arg1))))
|| (INTEGRAL_TYPE_P (type) && flag_wrapv && !flag_trapv)))
- return fold_build2 (PLUS_EXPR, type, arg0, negate_expr (arg1));
+ return fold_build2 (PLUS_EXPR, type,
+ fold_convert (type, arg0),
+ fold_convert (type, negate_expr (arg1)));
/* Try folding difference of addresses. */
{
/* Try replacing &a[i1] - c * i2 with &a[i1 - i2], if c is step
of the array. Loop optimizer sometimes produce this type of
expressions. */
- if (TREE_CODE (arg0) == ADDR_EXPR
- && TREE_CODE (arg1) == MULT_EXPR)
+ if (TREE_CODE (arg0) == ADDR_EXPR)
{
tem = try_move_mult_to_index (MINUS_EXPR, arg0, arg1);
if (tem)
return fold_convert (type, fold (tem));
}
+ if (flag_unsafe_math_optimizations
+ && (TREE_CODE (arg0) == RDIV_EXPR || TREE_CODE (arg0) == MULT_EXPR)
+ && (TREE_CODE (arg1) == RDIV_EXPR || TREE_CODE (arg1) == MULT_EXPR)
+ && (tem = distribute_real_division (code, type, arg0, arg1)))
+ return tem;
+
if (TREE_CODE (arg0) == MULT_EXPR
&& TREE_CODE (arg1) == MULT_EXPR
&& (!FLOAT_TYPE_P (type) || flag_unsafe_math_optimizations))
if (exact_real_inverse (TYPE_MODE(TREE_TYPE(arg0)), &r))
{
tem = build_real (type, r);
- return fold_build2 (MULT_EXPR, type, arg0, tem);
+ return fold_build2 (MULT_EXPR, type,
+ fold_convert (type, arg0), tem);
}
}
}
&& extract_array_ref (arg1, &base1, &offset1)
&& operand_equal_p (base0, base1, 0))
{
+ if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (base0)))
+ && integer_zerop (TYPE_SIZE (TREE_TYPE (TREE_TYPE (base0)))))
+ offset0 = NULL_TREE;
+ if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (base1)))
+ && integer_zerop (TYPE_SIZE (TREE_TYPE (TREE_TYPE (base1)))))
+ offset1 = NULL_TREE;
if (offset0 == NULL_TREE
&& offset1 == NULL_TREE)
{
switch (code)
{
case GE_EXPR:
- arg1 = const_binop (MINUS_EXPR, arg1, integer_one_node, 0);
- return fold_build2 (GT_EXPR, type, arg0, arg1);
+ arg1 = const_binop (MINUS_EXPR, arg1,
+ build_int_cst (TREE_TYPE (arg1), 1), 0);
+ return fold_build2 (GT_EXPR, type, arg0,
+ fold_convert (TREE_TYPE (arg0), arg1));
case LT_EXPR:
- arg1 = const_binop (MINUS_EXPR, arg1, integer_one_node, 0);
- return fold_build2 (LE_EXPR, type, arg0, arg1);
+ arg1 = const_binop (MINUS_EXPR, arg1,
+ build_int_cst (TREE_TYPE (arg1), 1), 0);
+ return fold_build2 (LE_EXPR, type, arg0,
+ fold_convert (TREE_TYPE (arg0), arg1));
default:
break;
&& (arglist = TREE_OPERAND (arg0, 1))
&& TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) == POINTER_TYPE
&& ! TREE_CHAIN (arglist))
- return fold_build2 (code, type,
- build1 (INDIRECT_REF, char_type_node,
- TREE_VALUE (arglist)),
- fold_convert (char_type_node,
- integer_zero_node));
+ {
+ tree iref = build_fold_indirect_ref (TREE_VALUE (arglist));
+ return fold_build2 (code, type, iref,
+ build_int_cst (TREE_TYPE (iref), 0));
+ }
}
/* We can fold X/C1 op C2 where C1 and C2 are integer constants
} /* switch (code) */
}
+/* Callback for walk_tree, looking for LABEL_EXPR.
+ Returns tree TP if it is LABEL_EXPR. Otherwise it returns NULL_TREE.
+ Do not check the sub-tree of GOTO_EXPR. */
+
+static tree
+contains_label_1 (tree *tp,
+ int *walk_subtrees,
+ void *data ATTRIBUTE_UNUSED)
+{
+ switch (TREE_CODE (*tp))
+ {
+ case LABEL_EXPR:
+ return *tp;
+ case GOTO_EXPR:
+ *walk_subtrees = 0;
+ /* no break */
+ default:
+ return NULL_TREE;
+ }
+}
+
+/* Checks whether the sub-tree ST contains a label LABEL_EXPR which is
+ accessible from outside the sub-tree. Returns NULL_TREE if no
+ addressable label is found. */
+
+static bool
+contains_label_p (tree st)
+{
+ return (walk_tree (&st, contains_label_1 , NULL, NULL) != NULL_TREE);
+}
+
/* Fold a ternary expression of code CODE and type TYPE with operands
OP0, OP1, and OP2. Return the folded expression if folding is
successful. Otherwise, return NULL_TREE. */
so all simple results must be passed through pedantic_non_lvalue. */
if (TREE_CODE (arg0) == INTEGER_CST)
{
+ tree unused_op = integer_zerop (arg0) ? op1 : op2;
tem = integer_zerop (arg0) ? op2 : op1;
/* Only optimize constant conditions when the selected branch
has the same type as the COND_EXPR. This avoids optimizing
- away "c ? x : throw", where the throw has a void type. */
- if (! VOID_TYPE_P (TREE_TYPE (tem))
- || VOID_TYPE_P (type))
+ away "c ? x : throw", where the throw has a void type.
+ Avoid throwing away that operand which contains label. */
+ if ((!TREE_SIDE_EFFECTS (unused_op)
+ || !contains_label_p (unused_op))
+ && (! VOID_TYPE_P (TREE_TYPE (tem))
+ || VOID_TYPE_P (type)))
return pedantic_non_lvalue (tem);
return NULL_TREE;
}
}
return NULL_TREE;
+ case BIT_FIELD_REF:
+ if (TREE_CODE (arg0) == VECTOR_CST
+ && type == TREE_TYPE (TREE_TYPE (arg0))
+ && host_integerp (arg1, 1)
+ && host_integerp (op2, 1))
+ {
+ unsigned HOST_WIDE_INT width = tree_low_cst (arg1, 1);
+ unsigned HOST_WIDE_INT idx = tree_low_cst (op2, 1);
+
+ if (width != 0
+ && simple_cst_equal (arg1, TYPE_SIZE (type)) == 1
+ && (idx % width) == 0
+ && (idx = idx / width)
+ < TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg0)))
+ {
+ tree elements = TREE_VECTOR_CST_ELTS (arg0);
+ while (idx-- > 0 && elements)
+ elements = TREE_CHAIN (elements);
+ if (elements)
+ return TREE_VALUE (elements);
+ else
+ return fold_convert (type, integer_zero_node);
+ }
+ }
+ return NULL_TREE;
+
default:
return NULL_TREE;
} /* switch (code) */
enum tree_code code;
char buf[sizeof (struct tree_decl)];
int i, len;
+
+recursive_label:
gcc_assert ((sizeof (struct tree_exp) + 5 * sizeof (tree)
<= sizeof (struct tree_decl))
}
else if (TREE_CODE_CLASS (code) == tcc_type
&& (TYPE_POINTER_TO (expr) || TYPE_REFERENCE_TO (expr)
- || TYPE_CACHED_VALUES_P (expr)))
+ || TYPE_CACHED_VALUES_P (expr)
+ || TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr)))
{
/* Allow these fields to be modified. */
memcpy (buf, expr, tree_size (expr));
expr = (tree) buf;
+ TYPE_CONTAINS_PLACEHOLDER_INTERNAL (expr) = 0;
TYPE_POINTER_TO (expr) = NULL;
TYPE_REFERENCE_TO (expr) = NULL;
if (TYPE_CACHED_VALUES_P (expr))
md5_process_bytes (expr, tree_size (expr), ctx);
fold_checksum_tree (TREE_TYPE (expr), ctx, ht);
if (TREE_CODE_CLASS (code) != tcc_type
- && TREE_CODE_CLASS (code) != tcc_declaration)
+ && TREE_CODE_CLASS (code) != tcc_declaration
+ && code != TREE_LIST)
fold_checksum_tree (TREE_CHAIN (expr), ctx, ht);
switch (TREE_CODE_CLASS (code))
{
case TREE_LIST:
fold_checksum_tree (TREE_PURPOSE (expr), ctx, ht);
fold_checksum_tree (TREE_VALUE (expr), ctx, ht);
+ expr = TREE_CHAIN (expr);
+ goto recursive_label;
break;
case TREE_VEC:
for (i = 0; i < TREE_VEC_LENGTH (expr); ++i)
return build_fold_addr_expr_with_type (t, build_pointer_type (TREE_TYPE (t)));
}
-/* Given a pointer value T, return a simplified version of an indirection
- through T, or NULL_TREE if no simplification is possible. */
+/* Given a pointer value OP0 and a type TYPE, return a simplified version
+ of an indirection through OP0, or NULL_TREE if no simplification is
+ possible. */
-static tree
-fold_indirect_ref_1 (tree t)
+tree
+fold_indirect_ref_1 (tree type, tree op0)
{
- tree type = TREE_TYPE (TREE_TYPE (t));
- tree sub = t;
+ tree sub = op0;
tree subtype;
STRIP_NOPS (sub);
tree op = TREE_OPERAND (sub, 0);
tree optype = TREE_TYPE (op);
/* *&p => p */
- if (lang_hooks.types_compatible_p (type, optype))
+ if (type == optype)
return op;
/* *(foo *)&fooarray => fooarray[0] */
else if (TREE_CODE (optype) == ARRAY_TYPE
- && lang_hooks.types_compatible_p (type, TREE_TYPE (optype)))
+ && type == TREE_TYPE (optype))
{
tree type_domain = TYPE_DOMAIN (optype);
tree min_val = size_zero_node;
/* *(foo *)fooarrptr => (*fooarrptr)[0] */
if (TREE_CODE (TREE_TYPE (subtype)) == ARRAY_TYPE
- && lang_hooks.types_compatible_p (type, TREE_TYPE (TREE_TYPE (subtype))))
+ && type == TREE_TYPE (TREE_TYPE (subtype)))
{
tree type_domain;
tree min_val = size_zero_node;
tree
build_fold_indirect_ref (tree t)
{
- tree sub = fold_indirect_ref_1 (t);
+ tree type = TREE_TYPE (TREE_TYPE (t));
+ tree sub = fold_indirect_ref_1 (type, t);
if (sub)
return sub;
else
- return build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (t)), t);
+ return build1 (INDIRECT_REF, type, t);
}
/* Given an INDIRECT_REF T, return either T or a simplified version. */
tree
fold_indirect_ref (tree t)
{
- tree sub = fold_indirect_ref_1 (TREE_OPERAND (t, 0));
+ tree sub = fold_indirect_ref_1 (TREE_TYPE (t), TREE_OPERAND (t, 0));
if (sub)
return sub;