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2006-03-18  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/crtfastmath.c (set_fast_math): Align fxsave to
	16byte by hand.

Reference:
http://gcc.gnu.org/ml/gcc-patches/2006-03/msg01179.html

--- ./gcc/config/i386/crtfastmath.c.align	2005-11-04 14:13:48.000000000 -0800
+++ ./gcc/config/i386/crtfastmath.c	2006-03-18 08:34:13.000000000 -0800
@@ -75,7 +75,7 @@ set_fast_math (void)
       if (edx & FXSAVE)
 	{
 	  /* Check if DAZ is available.  */
-	  struct
+	  struct fxsave
 	    {
 	      unsigned short int cwd;
 	      unsigned short int swd;
@@ -90,13 +90,17 @@ set_fast_math (void)
 	      long int st_space[32];
 	      long int xmm_space[32];
 	      long int padding[56];
-	    } __attribute__ ((aligned (16))) fxsave;
+	    } *fxsave;
 
-	  __builtin_memset (&fxsave, 0, sizeof (fxsave));
+	  fxsave = (struct fxsave *)
+	    (((unsigned long) __builtin_alloca (sizeof (*fxsave) + 15))
+	     & ~15L);
 
-	  asm volatile ("fxsave %0" : "=m" (fxsave) : "m" (fxsave));
+	  __builtin_memset (fxsave, 0, sizeof (*fxsave));
 
-	  if (fxsave.mxcsr_mask & MXCSR_DAZ)
+	  asm volatile ("fxsave %0" : "=m" (*fxsave) : "m" (*fxsave));
+
+	  if (fxsave->mxcsr_mask & MXCSR_DAZ)
 	    mxcsr |= MXCSR_DAZ;
 	}