2003-10-10 Roger Sayle <roger@eyesopen.com>
+ * builtins.c (builtin_mathfn_code): Generalize to check whether
+ the call is to any built-in function by comparing the call's
+ argument list against the builtin decl's function type.
+
+2003-10-10 Roger Sayle <roger@eyesopen.com>
+
* cse.c (constant_pool_entries_regcost): New global variable to
hold the register cost component of constant_pool_entries_cost.
(fold_rtx): Calculate constant_pool_entries_regcost at the same
}
/* Determine whether a tree node represents a call to a built-in
- math function. If the tree T is a call to a built-in function
- taking a single real argument, then the return value is the
- DECL_FUNCTION_CODE of the call, e.g. BUILT_IN_SQRT. Otherwise
- the return value is END_BUILTINS. */
+ function. If the tree T is a call to a built-in function with
+ the right number of arguments of the appropriate types, return
+ the DECL_FUNCTION_CODE of the call, e.g. BUILT_IN_SQRT.
+ Otherwise the return value is END_BUILTINS. */
enum built_in_function
builtin_mathfn_code (tree t)
{
- tree fndecl, arglist;
+ tree fndecl, arglist, parmlist;
+ tree argtype, parmtype;
if (TREE_CODE (t) != CALL_EXPR
|| TREE_CODE (TREE_OPERAND (t, 0)) != ADDR_EXPR)
fndecl = get_callee_fndecl (t);
if (fndecl == NULL_TREE
+ || TREE_CODE (fndecl) != FUNCTION_DECL
|| ! DECL_BUILT_IN (fndecl)
|| DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
return END_BUILTINS;
arglist = TREE_OPERAND (t, 1);
- if (! arglist
- || TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != REAL_TYPE)
- return END_BUILTINS;
-
- arglist = TREE_CHAIN (arglist);
- switch (DECL_FUNCTION_CODE (fndecl))
+ parmlist = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
+ for (; parmlist; parmlist = TREE_CHAIN (parmlist))
{
- case BUILT_IN_POW:
- case BUILT_IN_POWF:
- case BUILT_IN_POWL:
- case BUILT_IN_ATAN2:
- case BUILT_IN_ATAN2F:
- case BUILT_IN_ATAN2L:
- if (! arglist
- || TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != REAL_TYPE
- || TREE_CHAIN (arglist))
+ /* If a function doesn't take a variable number of arguments,
+ the last element in the list will have type `void'. */
+ parmtype = TREE_VALUE (parmlist);
+ if (VOID_TYPE_P (parmtype))
+ {
+ if (arglist)
+ return END_BUILTINS;
+ return DECL_FUNCTION_CODE (fndecl);
+ }
+
+ if (! arglist)
return END_BUILTINS;
- break;
- default:
- if (arglist)
+ argtype = TREE_TYPE (TREE_VALUE (arglist));
+
+ if (SCALAR_FLOAT_TYPE_P (parmtype))
+ {
+ if (! SCALAR_FLOAT_TYPE_P (argtype))
+ return END_BUILTINS;
+ }
+ else if (COMPLEX_FLOAT_TYPE_P (parmtype))
+ {
+ if (! COMPLEX_FLOAT_TYPE_P (argtype))
+ return END_BUILTINS;
+ }
+ else if (POINTER_TYPE_P (parmtype))
+ {
+ if (! POINTER_TYPE_P (argtype))
+ return END_BUILTINS;
+ }
+ else if (INTEGRAL_TYPE_P (parmtype))
+ {
+ if (! INTEGRAL_TYPE_P (argtype))
+ return END_BUILTINS;
+ }
+ else
return END_BUILTINS;
- break;
+
+ arglist = TREE_CHAIN (arglist);
}
+ /* Variable-length argument list. */
return DECL_FUNCTION_CODE (fndecl);
}