/* Expand builtin functions.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GCC.
#ifndef PAD_VARARGS_DOWN
#define PAD_VARARGS_DOWN BYTES_BIG_ENDIAN
#endif
+#ifdef HAVE_mpc
+static tree do_mpc_arg1 (tree, tree, int (*)(mpc_ptr, mpc_srcptr, mpc_rnd_t));
+#endif
/* Define the names of the builtin function types and codes. */
const char *const built_in_class_names[4]
static tree do_mpfr_remquo (tree, tree, tree);
static tree do_mpfr_lgamma_r (tree, tree, tree);
-/* Return true if NODE should be considered for inline expansion regardless
- of the optimization level. This means whenever a function is invoked with
- its "internal" name, which normally contains the prefix "__builtin". */
-
-static bool called_as_built_in (tree node)
+bool
+is_builtin_name (const char *name)
{
- const char *name = IDENTIFIER_POINTER (DECL_NAME (node));
if (strncmp (name, "__builtin_", 10) == 0)
return true;
if (strncmp (name, "__sync_", 7) == 0)
return false;
}
+/* Return true if NODE should be considered for inline expansion regardless
+ of the optimization level. This means whenever a function is invoked with
+ its "internal" name, which normally contains the prefix "__builtin". */
+
+static bool
+called_as_built_in (tree node)
+{
+ /* Note that we must use DECL_NAME, not DECL_ASSEMBLER_NAME_SET_P since
+ we want the name used to call the function, not the name it
+ will have. */
+ const char *name = IDENTIFIER_POINTER (DECL_NAME (node));
+ return is_builtin_name (name);
+}
+
/* Return the alignment in bits of EXP, an object.
Don't return more than MAX_ALIGN no matter what, ALIGN is the inital
guessed alignment e.g. from type alignment. */
static rtx
get_memory_rtx (tree exp, tree len)
{
- rtx addr = expand_expr (exp, NULL_RTX, ptr_mode, EXPAND_NORMAL);
- rtx mem = gen_rtx_MEM (BLKmode, memory_address (BLKmode, addr));
+ tree orig_exp = exp;
+ rtx addr, mem;
+ HOST_WIDE_INT off;
+
+ /* When EXP is not resolved SAVE_EXPR, MEM_ATTRS can be still derived
+ from its expression, for expr->a.b only <variable>.a.b is recorded. */
+ if (TREE_CODE (exp) == SAVE_EXPR && !SAVE_EXPR_RESOLVED_P (exp))
+ exp = TREE_OPERAND (exp, 0);
+
+ addr = expand_expr (orig_exp, NULL_RTX, ptr_mode, EXPAND_NORMAL);
+ mem = gen_rtx_MEM (BLKmode, memory_address (BLKmode, addr));
/* Get an expression we can use to find the attributes to assign to MEM.
If it is an ADDR_EXPR, use the operand. Otherwise, dereference it if
&& POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (exp, 0))))
exp = TREE_OPERAND (exp, 0);
- if (TREE_CODE (exp) == ADDR_EXPR)
+ off = 0;
+ if (TREE_CODE (exp) == POINTER_PLUS_EXPR
+ && TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR
+ && host_integerp (TREE_OPERAND (exp, 1), 0)
+ && (off = tree_low_cst (TREE_OPERAND (exp, 1), 0)) > 0)
+ exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
+ else if (TREE_CODE (exp) == ADDR_EXPR)
exp = TREE_OPERAND (exp, 0);
else if (POINTER_TYPE_P (TREE_TYPE (exp)))
exp = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (exp)), exp);
{
set_mem_attributes (mem, exp, 0);
+ if (off)
+ mem = adjust_automodify_address_nv (mem, BLKmode, NULL, off);
+
/* Allow the string and memory builtins to overflow from one
field into another, see http://gcc.gnu.org/PR23561.
Thus avoid COMPONENT_REFs in MEM_EXPR unless we know the whole
/* Put the insns after the NOTE that starts the function.
If this is inside a start_sequence, make the outer-level insn
chain current, so the code is placed at the start of the
- function. */
+ function. If internal_arg_pointer is a non-virtual pseudo,
+ it needs to be placed after the function that initializes
+ that pseudo. */
push_topmost_sequence ();
- emit_insn_before (seq, parm_birth_insn);
+ if (REG_P (crtl->args.internal_arg_pointer)
+ && REGNO (crtl->args.internal_arg_pointer) > LAST_VIRTUAL_REGISTER)
+ emit_insn_before (seq, parm_birth_insn);
+ else
+ emit_insn_before (seq, NEXT_INSN (entry_of_function ()));
pop_topmost_sequence ();
return temp;
}
stpcpy. */
static rtx
-expand_builtin_mempcpy(tree exp, rtx target, enum machine_mode mode)
+expand_builtin_mempcpy (tree exp, rtx target, enum machine_mode mode)
{
if (!validate_arglist (exp,
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
rtx target, enum machine_mode mode, int endp)
{
/* If return value is ignored, transform mempcpy into memcpy. */
- if (target == const0_rtx)
+ if (target == const0_rtx && implicit_built_in_decls[BUILT_IN_MEMCPY])
{
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
+ tree result = build_call_expr (fn, 3, dest, src, len);
- if (!fn)
- return NULL_RTX;
-
- return expand_expr (build_call_expr (fn, 3, dest, src, len),
- target, mode, EXPAND_NORMAL);
+ while (TREE_CODE (result) == COMPOUND_EXPR)
+ {
+ expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
+ EXPAND_NORMAL);
+ result = TREE_OPERAND (result, 1);
+ }
+ return expand_expr (result, target, mode, EXPAND_NORMAL);
}
else
{
src = CALL_EXPR_ARG (exp, 1);
/* If return value is ignored, transform stpcpy into strcpy. */
- if (target == const0_rtx)
+ if (target == const0_rtx && implicit_built_in_decls[BUILT_IN_STRCPY])
{
tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
- if (!fn)
- return NULL_RTX;
+ tree result = build_call_expr (fn, 2, dst, src);
- return expand_expr (build_call_expr (fn, 2, dst, src),
- target, mode, EXPAND_NORMAL);
+ STRIP_NOPS (result);
+ while (TREE_CODE (result) == COMPOUND_EXPR)
+ {
+ expand_expr (TREE_OPERAND (result, 0), const0_rtx, VOIDmode,
+ EXPAND_NORMAL);
+ result = TREE_OPERAND (result, 1);
+ }
+ return expand_expr (result, target, mode, EXPAND_NORMAL);
}
else
{
arg1_rtx = get_memory_rtx (arg1, len);
arg2_rtx = get_memory_rtx (arg2, len);
- arg3_rtx = expand_normal (len);
+ arg3_rtx = expand_normal (fold_convert (sizetype, len));
/* Set MEM_SIZE as appropriate. */
if (GET_CODE (arg3_rtx) == CONST_INT)
Call abort to encourage the user to fix the program. */
if (warned)
inform (input_location, "if this code is reached, the program will abort");
+ /* Before the abort, allow the evaluation of the va_list
+ expression to exit or longjmp. */
+ gimplify_and_add (valist, pre_p);
t = build_call_expr (implicit_built_in_decls[BUILT_IN_TRAP], 0);
gimplify_and_add (t, pre_p);
if (TREE_CODE (TREE_TYPE (valist)) == ARRAY_TYPE)
{
tree p1 = build_pointer_type (TREE_TYPE (have_va_type));
- valist = build_fold_addr_expr_with_type (valist, p1);
+ valist = fold_convert (p1, build_fold_addr_expr (valist));
}
gimplify_expr (&valist, pre_p, post_p, is_gimple_val, fb_rvalue);
}
while (TREE_CODE (inner) == COMPONENT_REF
|| TREE_CODE (inner) == ARRAY_REF);
- if (DECL_P (inner) && DECL_WEAK (inner))
+ if ((TREE_CODE (inner) == VAR_DECL
+ || TREE_CODE (inner) == FUNCTION_DECL)
+ && DECL_WEAK (inner))
return NULL_TREE;
}
tree arg0 = CALL_EXPR_ARG (arg, 0);
tree tree_root;
/* The inner root was either sqrt or cbrt. */
- REAL_VALUE_TYPE dconstroot =
- BUILTIN_SQRT_P (fcode) ? dconsthalf : dconst_third ();
+ /* This was a conditional expression but it triggered a bug
+ in Sun C 5.5. */
+ REAL_VALUE_TYPE dconstroot;
+ if (BUILTIN_SQRT_P (fcode))
+ dconstroot = dconsthalf;
+ else
+ dconstroot = dconst_third ();
/* Adjust for the outer root. */
SET_REAL_EXP (&dconstroot, REAL_EXP (&dconstroot) - 1);
return NULL_TREE;
}
+/* Fold function call to builtin ccos (or ccosh if HYPER is TRUE) with
+ argument ARG. TYPE is the type of the return value. Return
+ NULL_TREE if no simplification can be made. */
+
+static tree
+fold_builtin_ccos (tree arg, tree type ATTRIBUTE_UNUSED, tree fndecl,
+ bool hyper ATTRIBUTE_UNUSED)
+{
+ if (validate_arg (arg, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) == REAL_TYPE)
+ {
+ tree tmp;
+
+#ifdef HAVE_mpc
+ /* Calculate the result when the argument is a constant. */
+ if ((tmp = do_mpc_arg1 (arg, type, (hyper ? mpc_cosh : mpc_cos))))
+ return tmp;
+#endif
+
+ /* Optimize fn(-x) into fn(x). */
+ if ((tmp = fold_strip_sign_ops (arg)))
+ return build_call_expr (fndecl, 1, tmp);
+ }
+
+ return NULL_TREE;
+}
+
/* Fold function call to builtin tan, tanf, or tanl with argument ARG.
Return NULL_TREE if no simplification can be made. */
call = build_call_expr (fn, 1, arg0);
call = builtin_save_expr (call);
- return build2 (COMPOUND_EXPR, type,
+ return build2 (COMPOUND_EXPR, void_type_node,
build2 (MODIFY_EXPR, void_type_node,
build_fold_indirect_ref (arg1),
build1 (IMAGPART_EXPR, type, call)),
{
tree rtype;
tree realp, imagp, ifn;
+#ifdef HAVE_mpc
+ tree res;
+#endif
- if (!validate_arg (arg0, COMPLEX_TYPE))
+ if (!validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
return NULL_TREE;
+#ifdef HAVE_mpc
+ /* Calculate the result when the argument is a constant. */
+ if ((res = do_mpc_arg1 (arg0, type, mpc_exp)))
+ return res;
+#endif
+
rtype = TREE_TYPE (TREE_TYPE (arg0));
/* In case we can figure out the real part of arg0 and it is constant zero
return NULL_TREE;
}
-/* Return true if EXPR is the real constant contained in VALUE. */
-
-static bool
-real_dconstp (tree expr, const REAL_VALUE_TYPE *value)
-{
- STRIP_NOPS (expr);
-
- return ((TREE_CODE (expr) == REAL_CST
- && !TREE_OVERFLOW (expr)
- && REAL_VALUES_EQUAL (TREE_REAL_CST (expr), *value))
- || (TREE_CODE (expr) == COMPLEX_CST
- && real_dconstp (TREE_REALPART (expr), value)
- && real_zerop (TREE_IMAGPART (expr))));
-}
-
/* A subroutine of fold_builtin to fold the various logarithmic
functions. Return NULL_TREE if no simplification can me made.
FUNC is the corresponding MPFR logarithm function. */
tree res;
const enum built_in_function fcode = builtin_mathfn_code (arg);
- /* Optimize log(e) = 1.0. We're never passed an exact 'e',
- instead we'll look for 'e' truncated to MODE. So only do
- this if flag_unsafe_math_optimizations is set. */
- if (flag_unsafe_math_optimizations && func == mpfr_log)
- {
- const REAL_VALUE_TYPE e_truncated =
- real_value_truncate (TYPE_MODE (type), dconst_e ());
- if (real_dconstp (arg, &e_truncated))
- return build_real (type, dconst1);
- }
-
/* Calculate the result when the argument is a constant. */
if ((res = do_mpfr_arg1 (arg, type, func, &dconst0, NULL, false)))
return res;
static tree
fold_builtin_memset (tree dest, tree c, tree len, tree type, bool ignore)
{
- tree var, ret;
+ tree var, ret, etype;
unsigned HOST_WIDE_INT length, cval;
if (! validate_arg (dest, POINTER_TYPE)
if (TREE_THIS_VOLATILE (var))
return NULL_TREE;
- if (!INTEGRAL_TYPE_P (TREE_TYPE (var))
- && !POINTER_TYPE_P (TREE_TYPE (var)))
+ etype = TREE_TYPE (var);
+ if (TREE_CODE (etype) == ARRAY_TYPE)
+ etype = TREE_TYPE (etype);
+
+ if (!INTEGRAL_TYPE_P (etype)
+ && !POINTER_TYPE_P (etype))
return NULL_TREE;
if (! var_decl_component_p (var))
return NULL_TREE;
length = tree_low_cst (len, 1);
- if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (var))) != length
+ if (GET_MODE_SIZE (TYPE_MODE (etype)) != length
|| get_pointer_alignment (dest, BIGGEST_ALIGNMENT) / BITS_PER_UNIT
< (int) length)
return NULL_TREE;
cval |= (cval << 31) << 1;
}
- ret = build_int_cst_type (TREE_TYPE (var), cval);
- ret = build2 (MODIFY_EXPR, TREE_TYPE (var), var, ret);
+ ret = build_int_cst_type (etype, cval);
+ var = build_fold_indirect_ref (fold_convert (build_pointer_type (etype),
+ dest));
+ ret = build2 (MODIFY_EXPR, etype, var, ret);
if (ignore)
return ret;
really mandatory?
If either SRC is readonly or length is 1, we can use memcpy. */
- if (dest_align && src_align
- && (readonly_data_expr (src)
- || (host_integerp (len, 1)
- && (MIN (src_align, dest_align) / BITS_PER_UNIT >=
- tree_low_cst (len, 1)))))
+ if (!dest_align || !src_align)
+ return NULL_TREE;
+ if (readonly_data_expr (src)
+ || (host_integerp (len, 1)
+ && (MIN (src_align, dest_align) / BITS_PER_UNIT
+ >= tree_low_cst (len, 1))))
{
tree fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
if (!fn)
return NULL_TREE;
return build_call_expr (fn, 3, dest, src, len);
}
+
+ /* If *src and *dest can't overlap, optimize into memcpy as well. */
+ srcvar = build_fold_indirect_ref (src);
+ destvar = build_fold_indirect_ref (dest);
+ if (srcvar
+ && !TREE_THIS_VOLATILE (srcvar)
+ && destvar
+ && !TREE_THIS_VOLATILE (destvar))
+ {
+ tree src_base, dest_base, fn;
+ HOST_WIDE_INT src_offset = 0, dest_offset = 0;
+ HOST_WIDE_INT size = -1;
+ HOST_WIDE_INT maxsize = -1;
+
+ src_base = srcvar;
+ if (handled_component_p (src_base))
+ src_base = get_ref_base_and_extent (src_base, &src_offset,
+ &size, &maxsize);
+ dest_base = destvar;
+ if (handled_component_p (dest_base))
+ dest_base = get_ref_base_and_extent (dest_base, &dest_offset,
+ &size, &maxsize);
+ if (host_integerp (len, 1))
+ {
+ maxsize = tree_low_cst (len, 1);
+ if (maxsize
+ > INTTYPE_MAXIMUM (HOST_WIDE_INT) / BITS_PER_UNIT)
+ maxsize = -1;
+ else
+ maxsize *= BITS_PER_UNIT;
+ }
+ else
+ maxsize = -1;
+ if (SSA_VAR_P (src_base)
+ && SSA_VAR_P (dest_base))
+ {
+ if (operand_equal_p (src_base, dest_base, 0)
+ && ranges_overlap_p (src_offset, maxsize,
+ dest_offset, maxsize))
+ return NULL_TREE;
+ }
+ else if (TREE_CODE (src_base) == INDIRECT_REF
+ && TREE_CODE (dest_base) == INDIRECT_REF)
+ {
+ if (! operand_equal_p (TREE_OPERAND (src_base, 0),
+ TREE_OPERAND (dest_base, 0), 0)
+ || ranges_overlap_p (src_offset, maxsize,
+ dest_offset, maxsize))
+ return NULL_TREE;
+ }
+ else
+ return NULL_TREE;
+
+ fn = implicit_built_in_decls[BUILT_IN_MEMCPY];
+ if (!fn)
+ return NULL_TREE;
+ return build_call_expr (fn, 3, dest, src, len);
+ }
return NULL_TREE;
}
Perhaps we ought to inherit type from non-VOID argument here? */
STRIP_NOPS (src);
STRIP_NOPS (dest);
+ /* As we fold (void *)(p + CST) to (void *)p + CST undo this here. */
+ if (TREE_CODE (src) == POINTER_PLUS_EXPR)
+ {
+ tree tem = TREE_OPERAND (src, 0);
+ STRIP_NOPS (tem);
+ if (tem != TREE_OPERAND (src, 0))
+ src = build1 (NOP_EXPR, TREE_TYPE (tem), src);
+ }
+ if (TREE_CODE (dest) == POINTER_PLUS_EXPR)
+ {
+ tree tem = TREE_OPERAND (dest, 0);
+ STRIP_NOPS (tem);
+ if (tem != TREE_OPERAND (dest, 0))
+ dest = build1 (NOP_EXPR, TREE_TYPE (tem), dest);
+ }
srctype = TREE_TYPE (TREE_TYPE (src));
+ if (srctype
+ && TREE_CODE (srctype) == ARRAY_TYPE
+ && !tree_int_cst_equal (TYPE_SIZE_UNIT (srctype), len))
+ {
+ srctype = TREE_TYPE (srctype);
+ STRIP_NOPS (src);
+ src = build1 (NOP_EXPR, build_pointer_type (srctype), src);
+ }
desttype = TREE_TYPE (TREE_TYPE (dest));
+ if (desttype
+ && TREE_CODE (desttype) == ARRAY_TYPE
+ && !tree_int_cst_equal (TYPE_SIZE_UNIT (desttype), len))
+ {
+ desttype = TREE_TYPE (desttype);
+ STRIP_NOPS (dest);
+ dest = build1 (NOP_EXPR, build_pointer_type (desttype), dest);
+ }
if (!srctype || !desttype
|| !TYPE_SIZE_UNIT (srctype)
|| !TYPE_SIZE_UNIT (desttype)
|| TREE_CODE (TYPE_SIZE_UNIT (srctype)) != INTEGER_CST
- || TREE_CODE (TYPE_SIZE_UNIT (desttype)) != INTEGER_CST)
+ || TREE_CODE (TYPE_SIZE_UNIT (desttype)) != INTEGER_CST
+ || TYPE_VOLATILE (srctype)
+ || TYPE_VOLATILE (desttype))
return NULL_TREE;
src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT);
{
srcvar = build_fold_indirect_ref (src);
if (TREE_THIS_VOLATILE (srcvar))
- srcvar = NULL_TREE;
+ return NULL_TREE;
else if (!tree_int_cst_equal (lang_hooks.expr_size (srcvar), len))
srcvar = NULL_TREE;
/* With memcpy, it is possible to bypass aliasing rules, so without
{
destvar = build_fold_indirect_ref (dest);
if (TREE_THIS_VOLATILE (destvar))
- destvar = NULL_TREE;
+ return NULL_TREE;
else if (!tree_int_cst_equal (lang_hooks.expr_size (destvar), len))
destvar = NULL_TREE;
else if (!var_decl_component_p (destvar))
if (TREE_ADDRESSABLE (TREE_TYPE (destvar)))
return NULL_TREE;
- srctype = desttype;
+ srctype = build_qualified_type (desttype, 0);
if (src_align < (int) TYPE_ALIGN (srctype))
{
if (AGGREGATE_TYPE_P (srctype)
if (TREE_ADDRESSABLE (TREE_TYPE (srcvar)))
return NULL_TREE;
- desttype = srctype;
+ desttype = build_qualified_type (srctype, 0);
if (dest_align < (int) TYPE_ALIGN (desttype))
{
if (AGGREGATE_TYPE_P (desttype)
len = fold_build2 (MINUS_EXPR, TREE_TYPE (len), len,
ssize_int (1));
+ len = fold_convert (sizetype, len);
dest = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (dest), dest, len);
dest = fold_convert (type, dest);
if (expr)
static tree
fold_builtin_carg (tree arg, tree type)
{
- if (validate_arg (arg, COMPLEX_TYPE))
+ if (validate_arg (arg, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) == REAL_TYPE)
{
tree atan2_fn = mathfn_built_in (type, BUILT_IN_ATAN2);
return fold_builtin_abs (arg0, type);
CASE_FLT_FN (BUILT_IN_CONJ):
- if (validate_arg (arg0, COMPLEX_TYPE))
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
return fold_build1 (CONJ_EXPR, type, arg0);
break;
CASE_FLT_FN (BUILT_IN_CREAL):
- if (validate_arg (arg0, COMPLEX_TYPE))
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
return non_lvalue (fold_build1 (REALPART_EXPR, type, arg0));;
break;
break;
CASE_FLT_FN (BUILT_IN_CCOS):
+ return fold_builtin_ccos(arg0, type, fndecl, /*hyper=*/ false);
+
CASE_FLT_FN (BUILT_IN_CCOSH):
- /* These functions are "even", i.e. f(x) == f(-x). */
- if (validate_arg (arg0, COMPLEX_TYPE))
- {
- tree narg = fold_strip_sign_ops (arg0);
- if (narg)
- return build_call_expr (fndecl, 1, narg);
- }
+ return fold_builtin_ccos(arg0, type, fndecl, /*hyper=*/ true);
+
+#ifdef HAVE_mpc
+ CASE_FLT_FN (BUILT_IN_CSIN):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_sin);
break;
-
+
+ CASE_FLT_FN (BUILT_IN_CSINH):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_sinh);
+ break;
+
+ CASE_FLT_FN (BUILT_IN_CTAN):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_tan);
+ break;
+
+ CASE_FLT_FN (BUILT_IN_CTANH):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_tanh);
+ break;
+
+ CASE_FLT_FN (BUILT_IN_CLOG):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_log);
+ break;
+
+ CASE_FLT_FN (BUILT_IN_CSQRT):
+ if (validate_arg (arg0, COMPLEX_TYPE)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg0))) == REAL_TYPE)
+ return do_mpc_arg1 (arg0, type, mpc_sqrt);
+ break;
+#endif
+
CASE_FLT_FN (BUILT_IN_CABS):
return fold_builtin_cabs (arg0, type, fndecl);
CASE_FLT_FN (BUILT_IN_COS):
return fold_builtin_cos (arg0, type, fndecl);
- break;
CASE_FLT_FN (BUILT_IN_TAN):
return fold_builtin_tan (arg0, type);
case BUILT_IN_STRCPY:
return fold_builtin_strcpy (fndecl, arg0, arg1, NULL_TREE);
+ case BUILT_IN_STPCPY:
+ if (ignore)
+ {
+ tree fn = implicit_built_in_decls[BUILT_IN_STRCPY];
+ if (!fn)
+ break;
+
+ return build_call_expr (fn, 2, arg0, arg1);
+ }
+ break;
+
case BUILT_IN_STRCMP:
return fold_builtin_strcmp (arg0, arg1);
return NULL_TREE;
}
+/* Return true if FNDECL shouldn't be folded right now.
+ If a built-in function has an inline attribute always_inline
+ wrapper, defer folding it after always_inline functions have
+ been inlined, otherwise e.g. -D_FORTIFY_SOURCE checking
+ might not be performed. */
+
+static bool
+avoid_folding_inline_builtin (tree fndecl)
+{
+ return (DECL_DECLARED_INLINE_P (fndecl)
+ && DECL_DISREGARD_INLINE_LIMITS (fndecl)
+ && cfun
+ && !cfun->always_inline_functions_inlined
+ && lookup_attribute ("always_inline", DECL_ATTRIBUTES (fndecl)));
+}
+
/* A wrapper function for builtin folding that prevents warnings for
"statement without effect" and the like, caused by removing the
call node earlier than the warning is generated. */
return NULL_TREE;
}
+ if (avoid_folding_inline_builtin (fndecl))
+ return NULL_TREE;
+
/* FIXME: Don't use a list in this interface. */
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
return targetm.fold_builtin (fndecl, CALL_EXPR_ARGS (exp), ignore);
if (CAN_HAVE_LOCATION_P (realret)
&& !EXPR_HAS_LOCATION (realret))
SET_EXPR_LOCATION (realret, EXPR_LOCATION (exp));
- return realret;
}
return ret;
}
&& DECL_FUNCTION_CODE (fndecl2) == BUILT_IN_VA_ARG_PACK)
return build_call_array (type, fn, n, argarray);
}
+ if (avoid_folding_inline_builtin (fndecl))
+ return build_call_array (type, fn, n, argarray);
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
{
tree arglist = NULL_TREE;
ret = targetm.fold_builtin (fndecl, arglist, false);
if (ret)
return ret;
+ return build_call_array (type, fn, n, argarray);
}
else if (n <= MAX_ARGS_TO_FOLD_BUILTIN)
{
do
{
- code = va_arg (ap, enum tree_code);
+ code = (enum tree_code) va_arg (ap, int);
switch (code)
{
case 0:
do
{
- code = va_arg (ap, enum tree_code);
+ code = (enum tree_code) va_arg (ap, int);
switch (code)
{
case 0:
arg = CALL_EXPR_ARG (exp, 0);
}
+ if (TREE_CODE (arg) == SSA_NAME)
+ arg = SSA_NAME_VAR (arg);
+
/* We destructively modify the call to be __builtin_va_start (ap, 0)
or __builtin_next_arg (0) the first time we see it, after checking
the arguments and if needed issuing a warning. */
if (! integer_all_onesp (size) && tree_int_cst_lt (size, len))
{
- warning (0, "%Kcall to %D will always overflow destination buffer",
- exp, get_callee_fndecl (exp));
+ warning_at (tree_nonartificial_location (exp),
+ 0, "%Kcall to %D will always overflow destination buffer",
+ exp, get_callee_fndecl (exp));
return NULL_RTX;
}
{
int is_strlen = 0;
tree len, size;
+ location_t loc = tree_nonartificial_location (exp);
switch (fcode)
{
src = c_strlen (src, 1);
if (! src || ! host_integerp (src, 1))
{
- warning (0, "%Kcall to %D might overflow destination buffer",
- exp, get_callee_fndecl (exp));
+ warning_at (loc, 0, "%Kcall to %D might overflow destination buffer",
+ exp, get_callee_fndecl (exp));
return;
}
else if (tree_int_cst_lt (src, size))
else if (! host_integerp (len, 1) || ! tree_int_cst_lt (size, len))
return;
- warning (0, "%Kcall to %D will always overflow destination buffer",
- exp, get_callee_fndecl (exp));
+ warning_at (loc, 0, "%Kcall to %D will always overflow destination buffer",
+ exp, get_callee_fndecl (exp));
}
/* Emit warning if a buffer overflow is detected at compile time
return;
if (! tree_int_cst_lt (len, size))
- {
- warning (0, "%Kcall to %D will always overflow destination buffer",
- exp, get_callee_fndecl (exp));
- }
+ warning_at (tree_nonartificial_location (exp),
+ 0, "%Kcall to %D will always overflow destination buffer",
+ exp, get_callee_fndecl (exp));
}
/* Emit warning if a free is called with address of a variable. */
return;
if (SSA_VAR_P (arg))
- warning (0, "%Kattempt to free a non-heap object %qD", exp, arg);
+ warning_at (tree_nonartificial_location (exp),
+ 0, "%Kattempt to free a non-heap object %qD", exp, arg);
else
- warning (0, "%Kattempt to free a non-heap object", exp);
+ warning_at (tree_nonartificial_location (exp),
+ 0, "%Kattempt to free a non-heap object", exp);
}
/* Fold a call to __builtin_object_size with arguments PTR and OST,
return NULL_TREE;
}
+#ifdef HAVE_mpc
+/* Helper function for do_mpc_arg*(). Ensure M is a normal complex
+ number and no overflow/underflow occurred. INEXACT is true if M
+ was not exactly calculated. TYPE is the tree type for the result.
+ This function assumes that you cleared the MPFR flags and then
+ calculated M to see if anything subsequently set a flag prior to
+ entering this function. Return NULL_TREE if any checks fail. */
+
+static tree
+do_mpc_ckconv (mpc_srcptr m, tree type, int inexact)
+{
+ /* Proceed iff we get a normal number, i.e. not NaN or Inf and no
+ overflow/underflow occurred. If -frounding-math, proceed iff the
+ result of calling FUNC was exact. */
+ if (mpfr_number_p (mpc_realref (m)) && mpfr_number_p (mpc_imagref (m))
+ && !mpfr_overflow_p () && !mpfr_underflow_p ()
+ && (!flag_rounding_math || !inexact))
+ {
+ REAL_VALUE_TYPE re, im;
+
+ real_from_mpfr (&re, mpc_realref (m), type, GMP_RNDN);
+ real_from_mpfr (&im, mpc_imagref (m), type, GMP_RNDN);
+ /* Proceed iff GCC's REAL_VALUE_TYPE can hold the MPFR values,
+ check for overflow/underflow. If the REAL_VALUE_TYPE is zero
+ but the mpft_t is not, then we underflowed in the
+ conversion. */
+ if (real_isfinite (&re) && real_isfinite (&im)
+ && (re.cl == rvc_zero) == (mpfr_zero_p (mpc_realref (m)) != 0)
+ && (im.cl == rvc_zero) == (mpfr_zero_p (mpc_imagref (m)) != 0))
+ {
+ REAL_VALUE_TYPE re_mode, im_mode;
+
+ real_convert (&re_mode, TYPE_MODE (TREE_TYPE (type)), &re);
+ real_convert (&im_mode, TYPE_MODE (TREE_TYPE (type)), &im);
+ /* Proceed iff the specified mode can hold the value. */
+ if (real_identical (&re_mode, &re) && real_identical (&im_mode, &im))
+ return build_complex (type, build_real (TREE_TYPE (type), re_mode),
+ build_real (TREE_TYPE (type), im_mode));
+ }
+ }
+ return NULL_TREE;
+}
+#endif /* HAVE_mpc */
+
/* If argument ARG is a REAL_CST, call the one-argument mpfr function
FUNC on it and return the resulting value as a tree with type TYPE.
If MIN and/or MAX are not NULL, then the supplied ARG must be
return result;
}
+#ifdef HAVE_mpc
+/* If argument ARG is a COMPLEX_CST, call the one-argument mpc
+ function FUNC on it and return the resulting value as a tree with
+ type TYPE. The mpfr precision is set to the precision of TYPE. We
+ assume that function FUNC returns zero if the result could be
+ calculated exactly within the requested precision. */
+
+static tree
+do_mpc_arg1 (tree arg, tree type, int (*func)(mpc_ptr, mpc_srcptr, mpc_rnd_t))
+{
+ tree result = NULL_TREE;
+
+ STRIP_NOPS (arg);
+
+ /* To proceed, MPFR must exactly represent the target floating point
+ format, which only happens when the target base equals two. */
+ if (TREE_CODE (arg) == COMPLEX_CST && !TREE_OVERFLOW (arg)
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (arg))) == REAL_TYPE
+ && REAL_MODE_FORMAT (TYPE_MODE (TREE_TYPE (TREE_TYPE (arg))))->b == 2)
+ {
+ const REAL_VALUE_TYPE *const re = TREE_REAL_CST_PTR (TREE_REALPART (arg));
+ const REAL_VALUE_TYPE *const im = TREE_REAL_CST_PTR (TREE_IMAGPART (arg));
+
+ if (real_isfinite (re) && real_isfinite (im))
+ {
+ const struct real_format *const fmt =
+ REAL_MODE_FORMAT (TYPE_MODE (TREE_TYPE (type)));
+ const int prec = fmt->p;
+ const mp_rnd_t rnd = fmt->round_towards_zero ? GMP_RNDZ : GMP_RNDN;
+ const mpc_rnd_t crnd = fmt->round_towards_zero ? MPC_RNDZZ : MPC_RNDNN;
+ int inexact;
+ mpc_t m;
+
+ mpc_init2 (m, prec);
+ mpfr_from_real (mpc_realref(m), re, rnd);
+ mpfr_from_real (mpc_imagref(m), im, rnd);
+ mpfr_clear_flags ();
+ inexact = func (m, m, crnd);
+ result = do_mpc_ckconv (m, type, inexact);
+ mpc_clear (m);
+ }
+ }
+
+ return result;
+}
+#endif /* HAVE_mpc */
+
/* FIXME tuples.
The functions below provide an alternate interface for folding
builtin function calls presented as GIMPLE_CALL statements rather
{
int nargs = gimple_call_num_args (stmt);
+ if (avoid_folding_inline_builtin (fndecl))
+ return NULL_TREE;
/* FIXME: Don't use a list in this interface. */
if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
{
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