/* Utility routines for data type conversion for GCC.
Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1997, 1998,
- 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
{
if (integer_zerop (expr))
{
- expr = build_int_2 (0, 0);
- TREE_TYPE (expr) = type;
+ expr = build_int_cst (type, 0);
return expr;
}
return build_real (type, real_value_truncate (TYPE_MODE (type), orig));
}
- if (TREE_CODE (exp) != NOP_EXPR)
+ if (TREE_CODE (exp) != NOP_EXPR
+ && TREE_CODE (exp) != CONVERT_EXPR)
return exp;
sub = TREE_OPERAND (exp, 0);
newtype = TREE_TYPE (arg1);
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (itype))
{
- expr = build (TREE_CODE (expr), newtype,
- fold (convert_to_real (newtype, arg0)),
- fold (convert_to_real (newtype, arg1)));
+ expr = build2 (TREE_CODE (expr), newtype,
+ fold (convert_to_real (newtype, arg0)),
+ fold (convert_to_real (newtype, arg1)));
if (newtype == type)
return expr;
}
return error_mark_node;
}
+ /* Convert e.g. (long)round(d) -> lround(d). */
+ /* If we're converting to char, we may encounter differing behavior
+ between converting from double->char vs double->long->char.
+ We're in "undefined" territory but we prefer to be conservative,
+ so only proceed in "unsafe" math mode. */
+ if (optimize
+ && (flag_unsafe_math_optimizations
+ || (long_integer_type_node
+ && outprec >= TYPE_PRECISION (long_integer_type_node))))
+ {
+ tree s_expr = strip_float_extensions (expr);
+ tree s_intype = TREE_TYPE (s_expr);
+ const enum built_in_function fcode = builtin_mathfn_code (s_expr);
+ tree fn = 0;
+
+ switch (fcode)
+ {
+ case BUILT_IN_ROUND: case BUILT_IN_ROUNDF: case BUILT_IN_ROUNDL:
+ if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (long_long_integer_type_node))
+ fn = mathfn_built_in (s_intype, BUILT_IN_LLROUND);
+ else
+ fn = mathfn_built_in (s_intype, BUILT_IN_LROUND);
+ break;
+
+ case BUILT_IN_RINT: case BUILT_IN_RINTF: case BUILT_IN_RINTL:
+ /* Only convert rint* if we can ignore math exceptions. */
+ if (flag_trapping_math)
+ break;
+ /* ... Fall through ... */
+ case BUILT_IN_NEARBYINT: case BUILT_IN_NEARBYINTF: case BUILT_IN_NEARBYINTL:
+ if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (long_long_integer_type_node))
+ fn = mathfn_built_in (s_intype, BUILT_IN_LLRINT);
+ else
+ fn = mathfn_built_in (s_intype, BUILT_IN_LRINT);
+ break;
+ default:
+ break;
+ }
+
+ if (fn)
+ {
+ tree arglist = TREE_OPERAND (s_expr, 1);
+ tree newexpr = build_function_call_expr (fn, arglist);
+ return convert_to_integer (type, newexpr);
+ }
+ }
+
switch (TREE_CODE (intype))
{
case POINTER_TYPE:
case BOOLEAN_TYPE:
case CHAR_TYPE:
/* If this is a logical operation, which just returns 0 or 1, we can
- change the type of the expression. For some logical operations,
- we must also change the types of the operands to maintain type
- correctness. */
-
- if (TREE_CODE_CLASS (ex_form) == '<')
- {
- expr = copy_node (expr);
- TREE_TYPE (expr) = type;
- return expr;
- }
+ change the type of the expression. */
- else if (ex_form == TRUTH_AND_EXPR || ex_form == TRUTH_ANDIF_EXPR
- || ex_form == TRUTH_OR_EXPR || ex_form == TRUTH_ORIF_EXPR
- || ex_form == TRUTH_XOR_EXPR)
+ if (TREE_CODE_CLASS (ex_form) == tcc_comparison)
{
expr = copy_node (expr);
- TREE_OPERAND (expr, 0) = convert (type, TREE_OPERAND (expr, 0));
- TREE_OPERAND (expr, 1) = convert (type, TREE_OPERAND (expr, 1));
- TREE_TYPE (expr) = type;
- return expr;
- }
-
- else if (ex_form == TRUTH_NOT_EXPR)
- {
- expr = copy_node (expr);
- TREE_OPERAND (expr, 0) = convert (type, TREE_OPERAND (expr, 0));
TREE_TYPE (expr) = type;
return expr;
}
/* If the original expression had side-effects, we must
preserve it. */
if (TREE_SIDE_EFFECTS (expr))
- return build (COMPOUND_EXPR, type, expr, t);
+ return build2 (COMPOUND_EXPR, type, expr, t);
else
return t;
}
else
typex = lang_hooks.types.signed_type (typex);
return convert (type,
- fold (build (ex_form, typex,
- convert (typex, arg0),
- convert (typex, arg1))));
+ fold (build2 (ex_form, typex,
+ convert (typex, arg0),
+ convert (typex, arg1))));
}
}
}
case COND_EXPR:
/* It is sometimes worthwhile to push the narrowing down through
the conditional and never loses. */
- return fold (build (COND_EXPR, type, TREE_OPERAND (expr, 0),
- convert (type, TREE_OPERAND (expr, 1)),
- convert (type, TREE_OPERAND (expr, 2))));
+ return fold (build3 (COND_EXPR, type, TREE_OPERAND (expr, 0),
+ convert (type, TREE_OPERAND (expr, 1)),
+ convert (type, TREE_OPERAND (expr, 2))));
default:
break;
}
- return build1 (NOP_EXPR, type, expr);
+ return build1 (CONVERT_EXPR, type, expr);
case REAL_TYPE:
return build1 (FIX_TRUNC_EXPR, type, expr);
TREE_TYPE (TREE_TYPE (expr)), expr)));
case VECTOR_TYPE:
- if (GET_MODE_SIZE (TYPE_MODE (type))
- != GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (expr))))
+ if (!tree_int_cst_equal (TYPE_SIZE (type), TYPE_SIZE (TREE_TYPE (expr))))
{
error ("can't convert between vector values of different size");
return error_mark_node;
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
case CHAR_TYPE:
- return build (COMPLEX_EXPR, type, convert (subtype, expr),
- convert (subtype, integer_zero_node));
+ return build2 (COMPLEX_EXPR, type, convert (subtype, expr),
+ convert (subtype, integer_zero_node));
case COMPLEX_TYPE:
{
if (TYPE_MAIN_VARIANT (elt_type) == TYPE_MAIN_VARIANT (subtype))
return expr;
else if (TREE_CODE (expr) == COMPLEX_EXPR)
- return fold (build (COMPLEX_EXPR,
- type,
- convert (subtype, TREE_OPERAND (expr, 0)),
- convert (subtype, TREE_OPERAND (expr, 1))));
+ return fold (build2 (COMPLEX_EXPR, type,
+ convert (subtype, TREE_OPERAND (expr, 0)),
+ convert (subtype, TREE_OPERAND (expr, 1))));
else
{
expr = save_expr (expr);
return
- fold (build (COMPLEX_EXPR,
- type, convert (subtype,
- fold (build1 (REALPART_EXPR,
- TREE_TYPE (TREE_TYPE (expr)),
- expr))),
- convert (subtype,
- fold (build1 (IMAGPART_EXPR,
- TREE_TYPE (TREE_TYPE (expr)),
- expr)))));
+ fold (build2 (COMPLEX_EXPR, type,
+ convert (subtype,
+ fold (build1 (REALPART_EXPR,
+ TREE_TYPE (TREE_TYPE (expr)),
+ expr))),
+ convert (subtype,
+ fold (build1 (IMAGPART_EXPR,
+ TREE_TYPE (TREE_TYPE (expr)),
+ expr)))));
}
}
{
case INTEGER_TYPE:
case VECTOR_TYPE:
- if (GET_MODE_SIZE (TYPE_MODE (type))
- != GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (expr))))
+ if (!tree_int_cst_equal (TYPE_SIZE (type), TYPE_SIZE (TREE_TYPE (expr))))
{
error ("can't convert between vector values of different size");
return error_mark_node;
default:
error ("can't convert value to a vector");
- return convert_to_vector (type, integer_zero_node);
+ return error_mark_node;
}
}
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