x86-tune.def (TARGET_SLOW_PSHUFB): New tune definition.

gcc/
        * config/i386/x86-tune.def (TARGET_SLOW_PSHUFB): New tune definition.
        * config/i386/i386.h (TARGET_SLOW_PSHUFB): New tune flag.
        * config/i386/i386.c (expand_vec_perm_even_odd_1): Avoid byte shuffles
        for TARGET_SLOW_PSHUFB

From-SVN: r209465

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 682816b..c6fa5c0 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,12 @@
 2014-04-17  Evgeny Stupachenko  <evstupac@gmail.com>
 
+       * config/i386/x86-tune.def (TARGET_SLOW_PSHUFB): New tune definition.
+       * config/i386/i386.h (TARGET_SLOW_PSHUFB): New tune flag.
+       * config/i386/i386.c (expand_vec_perm_even_odd_1): Avoid byte shuffles
+       for TARGET_SLOW_PSHUFB
+
+2014-04-17  Evgeny Stupachenko  <evstupac@gmail.com>
+
        * config/i386/i386.c (slm_cost): Adjust vec_to_scalar_cost.
        * config/i386/i386.c (intel_cost): Ditto.
 

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index bf4d576..0ae3cda 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -44026,7 +44026,7 @@ expand_vec_perm_even_odd_1 (struct expand_vec_perm_d *d, unsigned odd)
       gcc_unreachable ();
 
     case V8HImode:
-      if (TARGET_SSSE3)
+      if (TARGET_SSSE3 && !TARGET_SLOW_PSHUFB)
        return expand_vec_perm_pshufb2 (d);
       else
        {
@@ -44049,7 +44049,7 @@ expand_vec_perm_even_odd_1 (struct expand_vec_perm_d *d, unsigned odd)
       break;
 
     case V16QImode:
-      if (TARGET_SSSE3)
+      if (TARGET_SSSE3 && !TARGET_SLOW_PSHUFB)
        return expand_vec_perm_pshufb2 (d);
       else
        {
@@ -46318,6 +46318,7 @@ ix86_add_stmt_cost (void *data, int count, enum vect_cost_for_stmt kind,
 {
   unsigned *cost = (unsigned *) data;
   unsigned retval = 0;
+
   tree vectype = stmt_info ? stmt_vectype (stmt_info) : NULL_TREE;
   int stmt_cost = ix86_builtin_vectorization_cost (kind, vectype, misalign);
 

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 51659de..1a884d8 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -425,6 +425,8 @@ extern unsigned char ix86_tune_features[X86_TUNE_LAST];
        ix86_tune_features[X86_TUNE_USE_VECTOR_FP_CONVERTS]
 #define TARGET_USE_VECTOR_CONVERTS \
        ix86_tune_features[X86_TUNE_USE_VECTOR_CONVERTS]
+#define TARGET_SLOW_PSHUFB \
+       ix86_tune_features[X86_TUNE_SLOW_PSHUFB]
 #define TARGET_FUSE_CMP_AND_BRANCH_32 \
        ix86_tune_features[X86_TUNE_FUSE_CMP_AND_BRANCH_32]
 #define TARGET_FUSE_CMP_AND_BRANCH_64 \

diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def
index 8399102..9b0ff36 100644 (file)
--- a/gcc/config/i386/x86-tune.def
+++ b/gcc/config/i386/x86-tune.def
@@ -386,6 +386,10 @@ DEF_TUNE (X86_TUNE_USE_VECTOR_FP_CONVERTS, "use_vector_fp_converts",
    from integer to FP. */
 DEF_TUNE (X86_TUNE_USE_VECTOR_CONVERTS, "use_vector_converts", m_AMDFAM10)
 
+/* X86_TUNE_SLOW_SHUFB: Indicates tunings with slow pshufb instruction.  */
+DEF_TUNE (X86_TUNE_SLOW_PSHUFB, "slow_pshufb",
+          m_BONNELL | m_SILVERMONT | m_INTEL)
+
 /*****************************************************************************/
 /* AVX instruction selection tuning (some of SSE flags affects AVX, too)     */
 /*****************************************************************************/