Add RDRND, F16C and FSGSBASE support to -march=native

	* config/i386/driver-i386.c (host_detect_local_cpu): Support
	RDRND, F16C and FSGSBASE.

From-SVN: r187696

gcc/ChangeLog

+2012-05-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/driver-i386.c (host_detect_local_cpu): Support
+	RDRND, F16C and FSGSBASE.
+
 2012-05-20  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR rtl-optimzation/53373

gcc/config/i386/driver-i386.c

@@ -398,6 +398,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
   unsigned int has_fma = 0, has_fma4 = 0, has_xop = 0;
   unsigned int has_bmi = 0, has_bmi2 = 0, has_tbm = 0, has_lzcnt = 0;
   unsigned int has_hle = 0, has_rtm = 0;
+  unsigned int has_rdrnd = 0, has_f16c = 0, has_fsgsbase = 0;
 
   bool arch;
 
@@ -445,6 +446,8 @@ const char *host_detect_local_cpu (int argc, const char **argv)
   has_aes = ecx & bit_AES;
   has_pclmul = ecx & bit_PCLMUL;
   has_fma = ecx & bit_FMA;
+  has_f16c = ecx & bit_F16C;
+  has_rdrnd = ecx & bit_RDRND;
 
   has_cmpxchg8b = edx & bit_CMPXCHG8B;
   has_cmov = edx & bit_CMOV;
@@ -461,6 +464,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       has_rtm = ebx & bit_RTM;
       has_avx2 = ebx & bit_AVX2;
       has_bmi2 = ebx & bit_BMI2;
+      has_fsgsbase = ebx & bit_FSGSBASE;
     }
 
   /* Check cpuid level of extended features.  */
@@ -733,11 +737,14 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       const char *lzcnt = has_lzcnt ? " -mlzcnt" : " -mno-lzcnt";
       const char *hle = has_hle ? " -mhle" : " -mno-hle";
       const char *rtm = has_rtm ? " -mrtm" : " -mno-rtm";
+      const char *rdrnd = has_rdrnd ? " -mrdrnd" : " -mno-rdrnd";
+      const char *f16c = has_f16c ? " -mf16c" : " -mno-f16c";
+      const char *fsgsbase = has_fsgsbase ? " -mfsgsbase" : " -mno-fsgsbase";
 
       options = concat (options, cx16, sahf, movbe, ase, pclmul,
 			popcnt, abm, lwp, fma, fma4, xop, bmi, bmi2,
 			tbm, avx, avx2, sse4_2, sse4_1, lzcnt, rtm,
-			hle, NULL);
+			hle, rdrnd, f16c, fsgsbase, NULL);
     }
 
 done: