* builtins.c (expand_builtin_mathfn_2, expand_builtin_mathfn): Do not

	expand errno setting variant when optimizing for size.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166879 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 1 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 4eb70474382..5f2959c673a 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -2039,7 +2039,8 @@ expand_builtin_mathfn (tree exp, rtx target, rtx subtarget)
     errno_set = false;
 
   /* Before working hard, check whether the instruction is available.  */
-  if (optab_handler (builtin_optab, mode) != CODE_FOR_nothing)
+  if (optab_handler (builtin_optab, mode) != CODE_FOR_nothing
+      && (!errno_set || !optimize_insn_for_size_p ()))
     {
       target = gen_reg_rtx (mode);
 
@@ -2149,6 +2150,9 @@ expand_builtin_mathfn_2 (tree exp, rtx target, rtx subtarget)
   if (! flag_errno_math || ! HONOR_NANS (mode))
     errno_set = false;
 
+  if (errno_set && optimize_insn_for_size_p ())
+    return 0;
+
   /* Always stabilize the argument list.  */
   CALL_EXPR_ARG (exp, 0) = arg0 = builtin_save_expr (arg0);
   CALL_EXPR_ARG (exp, 1) = arg1 = builtin_save_expr (arg1);