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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6c21b40e2426b5703121f7679d9f27fb3c682a14..b2d4d6d175aa7762bf77efafbece2b42caee2e07 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+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.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index c80a4798b236860c8888c142d38f6d1001c6dfb6..e9c14d0d95abac2b040e15418909690801936c5e 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/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,