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

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

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@187697 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a6f50a1..3f41b4e 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2012-05-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+       Backport from mainline
+       2012-05-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * config/i386/driver-i386.c (host_detect_local_cpu): Support
+       RDRND, F16C and FSGSBASE.
+
 2012-05-19  Eric Botcazou  <ebotcazou@adacore.com>
 
        Backport from mainline

diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index 09de555..0c006a3 100644 (file)
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -397,6 +397,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
   unsigned int has_pclmul = 0, has_abm = 0, has_lwp = 0;
   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_rdrnd = 0, has_f16c = 0, has_fsgsbase = 0;
 
   bool arch;
 
@@ -444,6 +445,8 @@ 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;
@@ -458,6 +461,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       has_bmi = ebx & bit_BMI;
       has_avx2 = ebx & bit_AVX2;
       has_bmi2 = ebx & bit_BMI2;
+      has_fsgsbase = ebx & bit_FSGSBASE;
     }
 
   /* Check cpuid level of extended features.  */
@@ -726,10 +730,14 @@ const char *host_detect_local_cpu (int argc, const char **argv)
       const char *sse4_2 = has_sse4_2 ? " -msse4.2" : " -mno-sse4.2";
       const char *sse4_1 = has_sse4_1 ? " -msse4.1" : " -mno-sse4.1";
       const char *lzcnt = has_lzcnt ? " -mlzcnt" : " -mno-lzcnt";
+      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, NULL);
+                       tbm, avx, avx2, sse4_2, sse4_1, lzcnt, rdrnd,
+                       f16c, fsgsbase, NULL);
     }
 
 done: