diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index e3adb05..c4aebd3 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -1470,6 +1470,7 @@ expand_builtin_mathfn (exp, target, subtarget) rtx op0, insns; tree fndecl = TREE_OPERAND (TREE_OPERAND (exp, 0), 0); tree arglist = TREE_OPERAND (exp, 1); + enum machine_mode argmode; if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE)) return 0; @@ -1518,8 +1519,8 @@ expand_builtin_mathfn (exp, target, subtarget) /* Compute into TARGET. Set TARGET to wherever the result comes back. */ - target = expand_unop (TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist))), - builtin_optab, op0, target, 0); + argmode = TYPE_MODE (TREE_TYPE (TREE_VALUE (arglist))); + target = expand_unop (argmode, builtin_optab, op0, target, 0); /* If we were unable to expand via the builtin, stop the sequence (without outputting the insns) and return 0, causing @@ -1530,18 +1531,12 @@ expand_builtin_mathfn (exp, target, subtarget) return 0; } - /* If errno must be maintained and if we are not allowing unsafe - math optimizations, check the result. */ + /* If errno must be maintained, we must set it to EDOM for NaN results. */ - if (flag_errno_math && ! flag_unsafe_math_optimizations) + if (flag_errno_math && HONOR_NANS (argmode)) { rtx lab1; - /* Don't define the builtin FP instructions - if your machine is not IEEE. */ - if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT) - abort (); - lab1 = gen_label_rtx (); /* Test the result; if it is NaN, set errno=EDOM because |