re PR target/31175 (isinf incorrectly expanded)

       PR target/31175
       * config/i386/i386.md (isinf<mode>2): Expand only when
       TARGET_C99_FUNCTIONS is set.

From-SVN: r123465

gcc/ChangeLog

@@ -36,6 +36,12 @@
 
 2007-04-03  Uros Bizjak  <ubizjak@gmail.com>
 
+	PR target/31175
+	* config/i386/i386.md (isinf<mode>2): Expand only when
+	TARGET_C99_FUNCTIONS is set.
+
+2007-04-03  Uros Bizjak  <ubizjak@gmail.com>
+
 	* config.gcc (i[34567]86-*-linux*): Add i386/t-crtpc to tm-file.
 	(x86_64-*-linux*): Ditto.
 	* config/i386/i386.opt (mpc): New option.

gcc/config/i386/i386.md

@@ -18236,8 +18236,9 @@
   [(use (match_operand:SI 0 "register_operand" ""))
    (use (match_operand:X87MODEF 1 "register_operand" ""))]
   "TARGET_USE_FANCY_MATH_387
-  && (!(SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)
-      || TARGET_MIX_SSE_I387)"
+   && TARGET_C99_FUNCTIONS
+   && (!(SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)
+       || TARGET_MIX_SSE_I387)"
 {
   rtx mask = GEN_INT (0x45);
   rtx val = GEN_INT (0x05);