i386.c (override_options): Disable x87 fancy math intrinsics if -mfpmath= doesn't...

	* config/i386/i386.c (override_options): Disable x87 fancy math
	intrinsics if -mfpmath= doesn't include 387 (default on x86_64).

From-SVN: r91267

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5f5865c22dc719effb525cea75b708ec085e006f..7aad684894f6819df6e4b7b0408c1de2dd279cdf 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-11-24  Roger Sayle  <roger@eyesopen.com>
+
+       * config/i386/i386.c (override_options): Disable x87 fancy math
+       intrinsics if -mfpmath= doesn't include 387 (default on x86_64).
+
 2004-11-24  Roger Sayle  <roger@eyesopen.com>
 
        * configure.ac: Tweak test for HAVE_DECL_LDGETNAME to avoid a

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 77cb09ff4ba4576333a6398235b66108382a9800..a3d2f2806d2aa7ba3d68c70c588c286c76787034 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -1545,6 +1545,10 @@ override_options (void)
        error ("bad value (%s) for -mfpmath= switch", ix86_fpmath_string);
     }
 
+  /* If fpmath doesn't include 387, disable use of x87 intrinsics.  */
+  if (! (ix86_fpmath & FPMATH_387))
+    target_flags |= MASK_NO_FANCY_MATH_387;
+
   /* It makes no sense to ask for just SSE builtins, so MMX is also turned
      on by -msse.  */
   if (TARGET_SSE)