i386.c (initial_ix86_tune_features): Turn on fp reassociation for avx2 targets.

* config/i386/i386.c (initial_ix86_tune_features): Turn on fp
  reassociation for avx2 targets.

From-SVN: r196164

gcc/ChangeLog

+2013-02-20  Igor Zamyatin  <igor.zamyatin@intel.com>
+
+	* config/i386/i386.c (initial_ix86_tune_features): Turn on fp
+	reassociation for avx2 targets.
+
 2012-02-19  Edgar E. Iglesias <edgar.iglesias@gmail.com>
 	* config/microblaze/microblaze.c: microblaze_has_clz = 0
 	Add version check for v8.10.a to enable microblaze_has_clz

gcc/config/i386/i386.c

@@ -2021,7 +2021,7 @@ static unsigned int initial_ix86_tune_features[X86_TUNE_LAST] = {
 
   /* X86_TUNE_REASSOC_FP_TO_PARALLEL: Try to produce parallel computations
      during reassociation of fp computation.  */
-  m_ATOM,
+  m_ATOM | m_HASWELL,
 
   /* X86_TUNE_GENERAL_REGS_SSE_SPILL: Try to spill general regs to SSE
      regs instead of memory.  */