From c3d34a7861be97f388a9e19b631b7e31fad5dcf6 Mon Sep 17 00:00:00 2001
From: Sebastian Pop <sebastian.pop@amd.com>
Date: Mon, 7 Dec 2009 22:23:10 +0000
Subject: [PATCH] Check cpuid ABM bit.

	* config/i386/cpuid.h (bit_ABM): New.
	* config/i386/driver-i386.c (host_detect_local_cpu): Add -mabm to the
	options when bit_ABM is set.

From-SVN: r155060
---
 gcc/ChangeLog                 | 6 ++++++
 gcc/config/i386/cpuid.h       | 5 +++--
 gcc/config/i386/driver-i386.c | 5 ++++-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3becda737cc..9f251048961 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-12-07  Sebastian Pop  <sebastian.pop@amd.com>
+
+	* config/i386/cpuid.h (bit_ABM): New.
+	* config/i386/driver-i386.c (host_detect_local_cpu): Add -mabm to the
+	options when bit_ABM is set.
+
 2009-12-07  Jakub Jelinek  <jakub@redhat.com>
 
 	* config/i386/i386.c (bdesc_special_args): Move __builtin_clzs from
diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index 21f0e3184ef..32284146b19 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -46,11 +46,12 @@
 
 /* Extended Features */
 /* %ecx */
-#define bit_FMA4        (1 << 16) 
 #define bit_LAHF_LM	(1 << 0)
-#define bit_LWP 	(1 << 15)
+#define bit_ABM		(1 << 5)
 #define bit_SSE4a	(1 << 6)
 #define bit_XOP         (1 << 11)
+#define bit_LWP 	(1 << 15)
+#define bit_FMA4        (1 << 16)
 
 /* %edx */
 #define bit_LM		(1 << 29)
diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index df0689db149..d3088f37bb6 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -383,7 +383,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
   unsigned int has_longmode = 0, has_3dnowp = 0, has_3dnow = 0;
   unsigned int has_movbe = 0, has_sse4_1 = 0, has_sse4_2 = 0;
   unsigned int has_popcnt = 0, has_aes = 0, has_avx = 0;
-  unsigned int has_pclmul = 0;
+  unsigned int has_pclmul = 0, has_abm = 0;
 
   bool arch;
 
@@ -444,6 +444,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 
       has_lahf_lm = ecx & bit_LAHF_LM;
       has_sse4a = ecx & bit_SSE4a;
+      has_abm = ecx & bit_ABM;
 
       has_longmode = edx & bit_LM;
       has_3dnowp = edx & bit_3DNOWP;
@@ -622,6 +623,8 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 	options = concat (options, " -mpclmul", NULL);
       if (has_popcnt)
 	options = concat (options, " -mpopcnt", NULL);
+      if (has_abm)
+	options = concat (options, " -mabm", NULL);
 
       if (has_avx)
 	options = concat (options, " -mavx", NULL);