[PATCH v1] RISC-V: Remove the type size restriction of vectorizer

[pan2.li@intel.com]

From: Pan Li <pan2.li@intel.com>

The vectoriable_call has one restriction of the size of data type.
Aka DF to DI is allowed but SF to DI isn't. You may see below message
when try to vectorize function call like lrintf.

void
test_lrintf (long *out, float *in, unsigned count)
{
  for (unsigned i = 0; i < count; i++)
    out[i] = __builtin_lrintf (in[i]);
}

lrintf.c:5:26: missed: couldn't vectorize loop
lrintf.c:5:26: missed: not vectorized: unsupported data-type

Then the standard name pattern like lrintmn2 cannot work for different
data type size like SF => DI. This patch would like to remove this data
type size check and unblock the standard name like lrintmn2.

Passed the x86 bootstrap and regression test already.

gcc/ChangeLog:

	* tree-vect-stmts.cc (vectorizable_call): Remove data size
	check.

Signed-off-by: Pan Li <pan2.li@intel.com>
---
 gcc/tree-vect-stmts.cc | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index b3a56498595..326e000a71d 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -3529,19 +3529,6 @@ vectorizable_call (vec_info *vinfo,
 
       return false;
     }
-  /* FORNOW: we don't yet support mixtures of vector sizes for calls,
-     just mixtures of nunits.  E.g. DI->SI versions of __builtin_ctz*
-     are traditionally vectorized as two VnDI->VnDI IFN_CTZs followed
-     by a pack of the two vectors into an SI vector.  We would need
-     separate code to handle direct VnDI->VnSI IFN_CTZs.  */
-  if (TYPE_SIZE (vectype_in) != TYPE_SIZE (vectype_out))
-    {
-      if (dump_enabled_p ())
-	dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-			 "mismatched vector sizes %T and %T\n",
-			 vectype_in, vectype_out);
-      return false;
-    }
 
   if (VECTOR_BOOLEAN_TYPE_P (vectype_out)
       != VECTOR_BOOLEAN_TYPE_P (vectype_in))
-- 
2.34.1