#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "flags.h"
#include "convert.h"
#include "toplev.h"
#include "langhooks.h"
#include "real.h"
tree
convert_to_pointer (tree type, tree expr)
{
if (TREE_TYPE (expr) == type)
return expr;
if (integer_zerop (expr))
{
tree t = build_int_cst (type, 0);
if (TREE_OVERFLOW (expr) || TREE_CONSTANT_OVERFLOW (expr))
t = force_fit_type (t, 0, TREE_OVERFLOW (expr),
TREE_CONSTANT_OVERFLOW (expr));
return t;
}
switch (TREE_CODE (TREE_TYPE (expr)))
{
case POINTER_TYPE:
case REFERENCE_TYPE:
return fold_build1 (NOP_EXPR, type, expr);
case INTEGER_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
if (TYPE_PRECISION (TREE_TYPE (expr)) != POINTER_SIZE)
expr = fold_build1 (NOP_EXPR,
lang_hooks.types.type_for_size (POINTER_SIZE, 0),
expr);
return fold_build1 (CONVERT_EXPR, type, expr);
default:
error ("cannot convert to a pointer type");
return convert_to_pointer (type, integer_zero_node);
}
}
tree
strip_float_extensions (tree exp)
{
tree sub, expt, subt;
if (TREE_CODE (exp) == REAL_CST)
{
REAL_VALUE_TYPE orig;
tree type = NULL;
orig = TREE_REAL_CST (exp);
if (TYPE_PRECISION (TREE_TYPE (exp)) > TYPE_PRECISION (float_type_node)
&& exact_real_truncate (TYPE_MODE (float_type_node), &orig))
type = float_type_node;
else if (TYPE_PRECISION (TREE_TYPE (exp))
> TYPE_PRECISION (double_type_node)
&& exact_real_truncate (TYPE_MODE (double_type_node), &orig))
type = double_type_node;
if (type)
return build_real (type, real_value_truncate (TYPE_MODE (type), orig));
}
if (TREE_CODE (exp) != NOP_EXPR
&& TREE_CODE (exp) != CONVERT_EXPR)
return exp;
sub = TREE_OPERAND (exp, 0);
subt = TREE_TYPE (sub);
expt = TREE_TYPE (exp);
if (!FLOAT_TYPE_P (subt))
return exp;
if (TYPE_PRECISION (subt) > TYPE_PRECISION (expt))
return exp;
return strip_float_extensions (sub);
}
tree
convert_to_real (tree type, tree expr)
{
enum built_in_function fcode = builtin_mathfn_code (expr);
tree itype = TREE_TYPE (expr);
if (optimize
&& (TYPE_MODE (type) == TYPE_MODE (double_type_node)
|| TYPE_MODE (type) == TYPE_MODE (float_type_node)))
{
switch (fcode)
{
#define CASE_MATHFN(FN) case BUILT_IN_##FN: case BUILT_IN_##FN##L:
CASE_MATHFN (ACOS)
CASE_MATHFN (ACOSH)
CASE_MATHFN (ASIN)
CASE_MATHFN (ASINH)
CASE_MATHFN (ATAN)
CASE_MATHFN (ATANH)
CASE_MATHFN (CBRT)
CASE_MATHFN (COS)
CASE_MATHFN (COSH)
CASE_MATHFN (ERF)
CASE_MATHFN (ERFC)
CASE_MATHFN (EXP)
CASE_MATHFN (EXP10)
CASE_MATHFN (EXP2)
CASE_MATHFN (EXPM1)
CASE_MATHFN (FABS)
CASE_MATHFN (GAMMA)
CASE_MATHFN (J0)
CASE_MATHFN (J1)
CASE_MATHFN (LGAMMA)
CASE_MATHFN (LOG)
CASE_MATHFN (LOG10)
CASE_MATHFN (LOG1P)
CASE_MATHFN (LOG2)
CASE_MATHFN (LOGB)
CASE_MATHFN (POW10)
CASE_MATHFN (SIN)
CASE_MATHFN (SINH)
CASE_MATHFN (SQRT)
CASE_MATHFN (TAN)
CASE_MATHFN (TANH)
CASE_MATHFN (TGAMMA)
CASE_MATHFN (Y0)
CASE_MATHFN (Y1)
#undef CASE_MATHFN
{
tree arg0 = strip_float_extensions (TREE_VALUE (TREE_OPERAND (expr, 1)));
tree newtype = type;
if (TYPE_PRECISION (TREE_TYPE (arg0)) > TYPE_PRECISION (type))
newtype = TREE_TYPE (arg0);
if (FLOAT_TYPE_P (TREE_TYPE (arg0))
&& TYPE_PRECISION (newtype) < TYPE_PRECISION (itype)
&& (TYPE_MODE (newtype) == TYPE_MODE (double_type_node)
|| TYPE_MODE (newtype) == TYPE_MODE (float_type_node)))
{
tree arglist;
tree fn = mathfn_built_in (newtype, fcode);
if (fn)
{
arglist = build_tree_list (NULL_TREE, fold (convert_to_real (newtype, arg0)));
expr = build_function_call_expr (fn, arglist);
if (newtype == type)
return expr;
}
}
}
default:
break;
}
}
if (optimize
&& (((fcode == BUILT_IN_FLOORL
|| fcode == BUILT_IN_CEILL
|| fcode == BUILT_IN_ROUNDL
|| fcode == BUILT_IN_RINTL
|| fcode == BUILT_IN_TRUNCL
|| fcode == BUILT_IN_NEARBYINTL)
&& (TYPE_MODE (type) == TYPE_MODE (double_type_node)
|| TYPE_MODE (type) == TYPE_MODE (float_type_node)))
|| ((fcode == BUILT_IN_FLOOR
|| fcode == BUILT_IN_CEIL
|| fcode == BUILT_IN_ROUND
|| fcode == BUILT_IN_RINT
|| fcode == BUILT_IN_TRUNC
|| fcode == BUILT_IN_NEARBYINT)
&& (TYPE_MODE (type) == TYPE_MODE (float_type_node)))))
{
tree fn = mathfn_built_in (type, fcode);
if (fn)
{
tree arg
= strip_float_extensions (TREE_VALUE (TREE_OPERAND (expr, 1)));
if (TYPE_PRECISION (type) >= TYPE_PRECISION (TREE_TYPE (arg)))
return
build_function_call_expr (fn,
build_tree_list (NULL_TREE,
fold (convert_to_real (type, arg))));
}
}
if (itype != type && FLOAT_TYPE_P (type))
switch (TREE_CODE (expr))
{
case ABS_EXPR:
case NEGATE_EXPR:
if (!flag_rounding_math
&& TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (expr)))
return build1 (TREE_CODE (expr), type,
fold (convert_to_real (type,
TREE_OPERAND (expr, 0))));
break;
case PLUS_EXPR:
case MINUS_EXPR:
case MULT_EXPR:
case RDIV_EXPR:
{
tree arg0 = strip_float_extensions (TREE_OPERAND (expr, 0));
tree arg1 = strip_float_extensions (TREE_OPERAND (expr, 1));
if (FLOAT_TYPE_P (TREE_TYPE (arg0))
&& FLOAT_TYPE_P (TREE_TYPE (arg1)))
{
tree newtype = type;
if (TYPE_MODE (TREE_TYPE (arg0)) == SDmode
|| TYPE_MODE (TREE_TYPE (arg1)) == SDmode)
newtype = dfloat32_type_node;
if (TYPE_MODE (TREE_TYPE (arg0)) == DDmode
|| TYPE_MODE (TREE_TYPE (arg1)) == DDmode)
newtype = dfloat64_type_node;
if (TYPE_MODE (TREE_TYPE (arg0)) == TDmode
|| TYPE_MODE (TREE_TYPE (arg1)) == TDmode)
newtype = dfloat128_type_node;
if (newtype == dfloat32_type_node
|| newtype == dfloat64_type_node
|| newtype == dfloat128_type_node)
{
expr = build2 (TREE_CODE (expr), newtype,
fold (convert_to_real (newtype, arg0)),
fold (convert_to_real (newtype, arg1)));
if (newtype == type)
return expr;
break;
}
if (TYPE_PRECISION (TREE_TYPE (arg0)) > TYPE_PRECISION (newtype))
newtype = TREE_TYPE (arg0);
if (TYPE_PRECISION (TREE_TYPE (arg1)) > TYPE_PRECISION (newtype))
newtype = TREE_TYPE (arg1);
if (TYPE_PRECISION (newtype) < TYPE_PRECISION (itype))
{
expr = build2 (TREE_CODE (expr), newtype,
fold (convert_to_real (newtype, arg0)),
fold (convert_to_real (newtype, arg1)));
if (newtype == type)
return expr;
}
}
}
break;
default:
break;
}
switch (TREE_CODE (TREE_TYPE (expr)))
{
case REAL_TYPE:
return build1 ((flag_float_store
|| DECIMAL_FLOAT_TYPE_P (type)
|| DECIMAL_FLOAT_TYPE_P (itype))
? CONVERT_EXPR : NOP_EXPR, type, expr);
case INTEGER_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
return build1 (FLOAT_EXPR, type, expr);
case COMPLEX_TYPE:
return convert (type,
fold_build1 (REALPART_EXPR,
TREE_TYPE (TREE_TYPE (expr)), expr));
case POINTER_TYPE:
case REFERENCE_TYPE:
error ("pointer value used where a floating point value was expected");
return convert_to_real (type, integer_zero_node);
default:
error ("aggregate value used where a float was expected");
return convert_to_real (type, integer_zero_node);
}
}
tree
convert_to_integer (tree type, tree expr)
{
enum tree_code ex_form = TREE_CODE (expr);
tree intype = TREE_TYPE (expr);
unsigned int inprec = TYPE_PRECISION (intype);
unsigned int outprec = TYPE_PRECISION (type);
if (!COMPLETE_TYPE_P (type))
{
error ("conversion to incomplete type");
return error_mark_node;
}
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_FLT_FN (BUILT_IN_CEIL):
if (!TARGET_C99_FUNCTIONS)
break;
if (outprec < TYPE_PRECISION (long_integer_type_node)
|| (outprec == TYPE_PRECISION (long_integer_type_node)
&& !TYPE_UNSIGNED (type)))
fn = mathfn_built_in (s_intype, BUILT_IN_LCEIL);
else if (outprec == TYPE_PRECISION (long_long_integer_type_node)
&& !TYPE_UNSIGNED (type))
fn = mathfn_built_in (s_intype, BUILT_IN_LLCEIL);
break;
CASE_FLT_FN (BUILT_IN_FLOOR):
if (!TARGET_C99_FUNCTIONS)
break;
if (outprec < TYPE_PRECISION (long_integer_type_node)
|| (outprec == TYPE_PRECISION (long_integer_type_node)
&& !TYPE_UNSIGNED (type)))
fn = mathfn_built_in (s_intype, BUILT_IN_LFLOOR);
else if (outprec == TYPE_PRECISION (long_long_integer_type_node)
&& !TYPE_UNSIGNED (type))
fn = mathfn_built_in (s_intype, BUILT_IN_LLFLOOR);
break;
CASE_FLT_FN (BUILT_IN_ROUND):
if (outprec < TYPE_PRECISION (long_integer_type_node)
|| (outprec == TYPE_PRECISION (long_integer_type_node)
&& !TYPE_UNSIGNED (type)))
fn = mathfn_built_in (s_intype, BUILT_IN_LROUND);
else if (outprec == TYPE_PRECISION (long_long_integer_type_node)
&& !TYPE_UNSIGNED (type))
fn = mathfn_built_in (s_intype, BUILT_IN_LLROUND);
break;
CASE_FLT_FN (BUILT_IN_NEARBYINT):
if (flag_trapping_math)
break;
CASE_FLT_FN (BUILT_IN_RINT):
if (outprec < TYPE_PRECISION (long_integer_type_node)
|| (outprec == TYPE_PRECISION (long_integer_type_node)
&& !TYPE_UNSIGNED (type)))
fn = mathfn_built_in (s_intype, BUILT_IN_LRINT);
else if (outprec == TYPE_PRECISION (long_long_integer_type_node)
&& !TYPE_UNSIGNED (type))
fn = mathfn_built_in (s_intype, BUILT_IN_LLRINT);
break;
CASE_FLT_FN (BUILT_IN_TRUNC):
{
tree arglist = TREE_OPERAND (s_expr, 1);
return convert_to_integer (type, TREE_VALUE (arglist));
}
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 REFERENCE_TYPE:
if (integer_zerop (expr))
return build_int_cst (type, 0);
expr = fold_build1 (CONVERT_EXPR,
lang_hooks.types.type_for_size (POINTER_SIZE, 0),
expr);
return fold_convert (type, expr);
case INTEGER_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
if (TREE_CODE_CLASS (ex_form) == tcc_comparison)
{
expr = copy_node (expr);
TREE_TYPE (expr) = type;
return expr;
}
else if (outprec >= inprec)
{
enum tree_code code;
tree tem;
if (TYPE_UNSIGNED (type) != TYPE_UNSIGNED (TREE_TYPE (expr))
&& (TYPE_PRECISION (TREE_TYPE (expr))
!= GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (expr)))))
code = CONVERT_EXPR;
else
code = NOP_EXPR;
tem = fold_unary (code, type, expr);
if (tem)
return tem;
tem = build1 (code, type, expr);
TREE_NO_WARNING (tem) = 1;
return tem;
}
else if (TREE_CODE (type) == ENUMERAL_TYPE
|| outprec != GET_MODE_BITSIZE (TYPE_MODE (type)))
return build1 (NOP_EXPR, type,
convert (lang_hooks.types.type_for_mode
(TYPE_MODE (type), TYPE_UNSIGNED (type)),
expr));
switch (ex_form)
{
case RSHIFT_EXPR:
if (TREE_CODE (TREE_OPERAND (expr, 1)) == INTEGER_CST
&& tree_int_cst_sgn (TREE_OPERAND (expr, 1)) <= 0)
goto trunc1;
break;
case LSHIFT_EXPR:
if (TREE_CODE (TREE_OPERAND (expr, 1)) == INTEGER_CST
&& tree_int_cst_sgn (TREE_OPERAND (expr, 1)) >= 0
&& TYPE_UNSIGNED (type)
&& TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST)
{
if (tree_int_cst_lt (TREE_OPERAND (expr, 1), TYPE_SIZE (type)))
goto trunc1;
else
{
tree t = build_int_cst (type, 0);
if (TREE_SIDE_EFFECTS (expr))
return build2 (COMPOUND_EXPR, type, expr, t);
else
return t;
}
}
break;
case MAX_EXPR:
case MIN_EXPR:
case MULT_EXPR:
{
tree arg0 = get_unwidened (TREE_OPERAND (expr, 0), type);
tree arg1 = get_unwidened (TREE_OPERAND (expr, 1), type);
if (outprec >= TYPE_PRECISION (TREE_TYPE (arg0))
&& outprec >= TYPE_PRECISION (TREE_TYPE (arg1))
&& (TYPE_UNSIGNED (TREE_TYPE (arg0))
== TYPE_UNSIGNED (TREE_TYPE (arg1))))
goto trunc1;
break;
}
case PLUS_EXPR:
case MINUS_EXPR:
case BIT_AND_EXPR:
case BIT_IOR_EXPR:
case BIT_XOR_EXPR:
trunc1:
{
tree arg0 = get_unwidened (TREE_OPERAND (expr, 0), type);
tree arg1 = get_unwidened (TREE_OPERAND (expr, 1), type);
if (outprec >= BITS_PER_WORD
|| TRULY_NOOP_TRUNCATION (outprec, inprec)
|| inprec > TYPE_PRECISION (TREE_TYPE (arg0))
|| inprec > TYPE_PRECISION (TREE_TYPE (arg1)))
{
tree typex = type;
if (TREE_CODE (typex) == ENUMERAL_TYPE)
typex = lang_hooks.types.type_for_size
(TYPE_PRECISION (typex), TYPE_UNSIGNED (typex));
if (TYPE_PRECISION (typex) != inprec)
{
if (TYPE_UNSIGNED (TREE_TYPE (expr))
|| (TYPE_UNSIGNED (TREE_TYPE (arg0))
&& (TYPE_UNSIGNED (TREE_TYPE (arg1))
|| ex_form == LSHIFT_EXPR
|| ex_form == RSHIFT_EXPR
|| ex_form == LROTATE_EXPR
|| ex_form == RROTATE_EXPR))
|| ex_form == LSHIFT_EXPR
|| ((!TYPE_OVERFLOW_WRAPS (TREE_TYPE (arg0))
|| !TYPE_OVERFLOW_WRAPS (TREE_TYPE (arg1)))
&& (ex_form == PLUS_EXPR
|| ex_form == MINUS_EXPR)))
typex = lang_hooks.types.unsigned_type (typex);
else
typex = lang_hooks.types.signed_type (typex);
return convert (type,
fold_build2 (ex_form, typex,
convert (typex, arg0),
convert (typex, arg1)));
}
}
}
break;
case NEGATE_EXPR:
case BIT_NOT_EXPR:
{
tree typex;
if (TYPE_UNSIGNED (TREE_TYPE (expr)))
typex = lang_hooks.types.unsigned_type (type);
else
typex = lang_hooks.types.signed_type (type);
return convert (type,
fold_build1 (ex_form, typex,
convert (typex,
TREE_OPERAND (expr, 0))));
}
case NOP_EXPR:
if (TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) == VECTOR_TYPE
&& (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (TREE_OPERAND (expr, 0))))
!= GET_MODE_SIZE (TYPE_MODE (type))))
break;
return convert (type, get_unwidened (TREE_OPERAND (expr, 0), type));
case COND_EXPR:
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 (CONVERT_EXPR, type, expr);
case REAL_TYPE:
return build1 (FIX_TRUNC_EXPR, type, expr);
case COMPLEX_TYPE:
return convert (type,
fold_build1 (REALPART_EXPR,
TREE_TYPE (TREE_TYPE (expr)), expr));
case VECTOR_TYPE:
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;
}
return build1 (VIEW_CONVERT_EXPR, type, expr);
default:
error ("aggregate value used where an integer was expected");
return convert (type, integer_zero_node);
}
}
tree
convert_to_complex (tree type, tree expr)
{
tree subtype = TREE_TYPE (type);
switch (TREE_CODE (TREE_TYPE (expr)))
{
case REAL_TYPE:
case INTEGER_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
return build2 (COMPLEX_EXPR, type, convert (subtype, expr),
convert (subtype, integer_zero_node));
case COMPLEX_TYPE:
{
tree elt_type = TREE_TYPE (TREE_TYPE (expr));
if (TYPE_MAIN_VARIANT (elt_type) == TYPE_MAIN_VARIANT (subtype))
return expr;
else if (TREE_CODE (expr) == COMPLEX_EXPR)
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_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 POINTER_TYPE:
case REFERENCE_TYPE:
error ("pointer value used where a complex was expected");
return convert_to_complex (type, integer_zero_node);
default:
error ("aggregate value used where a complex was expected");
return convert_to_complex (type, integer_zero_node);
}
}
tree
convert_to_vector (tree type, tree expr)
{
switch (TREE_CODE (TREE_TYPE (expr)))
{
case INTEGER_TYPE:
case VECTOR_TYPE:
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;
}
return build1 (VIEW_CONVERT_EXPR, type, expr);
default:
error ("can't convert value to a vector");
return error_mark_node;
}
}