Turn on unaligned SSE load/store for Core i7.

2010-12-06  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (m_COREI7): New.
	(initial_ix86_tune_features): Turn on
	X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL and
	X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL for Core i7.

From-SVN: r167496

gcc/ChangeLog

 2010-12-06  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* config/i386/i386.c (m_COREI7): New.
+	(initial_ix86_tune_features): Turn on
+	X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL and
+	X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL for Core i7.
+
+2010-12-06  H.J. Lu  <hongjiu.lu@intel.com>
+
 	* config.gcc: Allow corei7-avx for --with-arch/--with-cpu.
 
 	* config/i386/driver-i386.c (host_detect_local_cpu): Support

gcc/config/i386/i386.c

@@ -1644,6 +1644,7 @@ const struct processor_costs *ix86_cost = &pentium_cost;
 #define m_CORE2_64  (1<<PROCESSOR_CORE2_64)
 #define m_COREI7_32  (1<<PROCESSOR_COREI7_32)
 #define m_COREI7_64  (1<<PROCESSOR_COREI7_64)
+#define m_COREI7  (m_COREI7_32 | m_COREI7_64)
 #define m_CORE2I7_32  (m_CORE2_32 | m_COREI7_32)
 #define m_CORE2I7_64  (m_CORE2_64 | m_COREI7_64)
 #define m_CORE2I7  (m_CORE2I7_32 | m_CORE2I7_64)
@@ -1810,10 +1811,10 @@ static unsigned int initial_ix86_tune_features[X86_TUNE_LAST] = {
   | m_AMDFAM10 | m_BDVER1,
 
   /* X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL */
-  m_AMDFAM10 | m_BDVER1,
+  m_AMDFAM10 | m_BDVER1 | m_COREI7,
 
   /* X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL */
-  m_BDVER1,
+  m_BDVER1 | m_COREI7,
 
   /* X86_TUNE_SSE_PACKED_SINGLE_INSN_OPTIMAL */
   m_BDVER1,