diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 41 |
1 files changed, 5 insertions, 36 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index e5a00ee..ae7e7ef 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -162,7 +162,6 @@ static tree fold_builtin_memchr (location_t, tree, tree, tree, tree); static tree fold_builtin_memcmp (location_t, tree, tree, tree); static tree fold_builtin_strcmp (location_t, tree, tree); static tree fold_builtin_strncmp (location_t, tree, tree, tree); -static tree fold_builtin_signbit (location_t, tree, tree); static tree fold_builtin_isascii (location_t, tree); static tree fold_builtin_toascii (location_t, tree); static tree fold_builtin_isdigit (location_t, tree); @@ -7782,40 +7781,6 @@ fold_builtin_strncmp (location_t loc, tree arg1, tree arg2, tree len) return NULL_TREE; } -/* Fold function call to builtin signbit, signbitf or signbitl with argument - ARG. Return NULL_TREE if no simplification can be made. */ - -static tree -fold_builtin_signbit (location_t loc, tree arg, tree type) -{ - if (!validate_arg (arg, REAL_TYPE)) - return NULL_TREE; - - /* If ARG is a compile-time constant, determine the result. */ - if (TREE_CODE (arg) == REAL_CST - && !TREE_OVERFLOW (arg)) - { - REAL_VALUE_TYPE c; - - c = TREE_REAL_CST (arg); - return (REAL_VALUE_NEGATIVE (c) - ? build_one_cst (type) - : build_zero_cst (type)); - } - - /* If ARG is non-negative, the result is always zero. */ - if (tree_expr_nonnegative_p (arg)) - return omit_one_operand_loc (loc, type, integer_zero_node, arg); - - /* If ARG's format doesn't have signed zeros, return "arg < 0.0". */ - if (!HONOR_SIGNED_ZEROS (arg)) - return fold_convert (type, - fold_build2_loc (loc, LT_EXPR, boolean_type_node, arg, - build_real (TREE_TYPE (arg), dconst0))); - - return NULL_TREE; -} - /* Fold function call to builtin copysign, copysignf or copysignl with arguments ARG1 and ARG2. Return NULL_TREE if no simplification can be made. */ @@ -9124,7 +9089,11 @@ fold_builtin_1 (location_t loc, tree fndecl, tree arg0) return fold_builtin_bitop (fndecl, arg0); CASE_FLT_FN (BUILT_IN_SIGNBIT): - return fold_builtin_signbit (loc, arg0, type); + if (TREE_CODE (arg0) == REAL_CST && !TREE_OVERFLOW (arg0)) + return (REAL_VALUE_NEGATIVE (TREE_REAL_CST (arg0)) + ? build_one_cst (type) + : build_zero_cst (type)); + break; CASE_FLT_FN (BUILT_IN_SIGNIFICAND): return fold_builtin_significand (loc, arg0, type); |