SCCVN: Fix repeating variable name "len"

Line 3292: has variable name "len": tree mask = NULL_TREE, len = NULL_TREE, bias = NULL_TREE;
Line 3349: has variable name "len": HOST_WIDE_INT start = 0, len = 0;

Since they are never used simultaneously, such issue is not recognized for now.
However, I want to add LEN_MASK_{LOAD,STORE} which will need these 2 variables, so fix naming in this path.

Change HOST_WIDE_INT start = 0, len = 0; into HOST_WIDE_INT start = 0, length = 0;

gcc/ChangeLog:

	* tree-ssa-sccvn.cc (vn_reference_lookup_3): Change name "len" into
	"length".

diff --git a/gcc/tree-ssa-sccvn.cc b/gcc/tree-ssa-sccvn.cc
index 27c84e78fcf7103025c2e359a5461583a60f3ef1..11061a374a27e9c29f30949ea3806e23e6749052 100644 (file)
--- a/gcc/tree-ssa-sccvn.cc
+++ b/gcc/tree-ssa-sccvn.cc
@@ -3346,17 +3346,17 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *data_,
                = tree_to_uhwi (TYPE_SIZE (TREE_TYPE (vectype)));
              if (mask)
                {
-                 HOST_WIDE_INT start = 0, len = 0;
+                 HOST_WIDE_INT start = 0, length = 0;
                  unsigned mask_idx = 0;
                  do
                    {
                      if (integer_zerop (VECTOR_CST_ELT (mask, mask_idx)))
                        {
-                         if (len != 0)
+                         if (length != 0)
                            {
                              pd.rhs_off = start;
                              pd.offset = offset2i + start;
-                             pd.size = len;
+                             pd.size = length;
                              if (ranges_known_overlap_p
                                    (offset, maxsize, pd.offset, pd.size))
                                {
@@ -3367,18 +3367,18 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *data_,
                                }
                            }
                          start = (mask_idx + 1) * elsz;
-                         len = 0;
+                         length = 0;
                        }
                      else
-                       len += elsz;
+                       length += elsz;
                      mask_idx++;
                    }
                  while (known_lt (mask_idx, TYPE_VECTOR_SUBPARTS (vectype)));
-                 if (len != 0)
+                 if (length != 0)
                    {
                      pd.rhs_off = start;
                      pd.offset = offset2i + start;
-                     pd.size = len;
+                     pd.size = length;
                      if (ranges_known_overlap_p (offset, maxsize,
                                                  pd.offset, pd.size))
                        return data->push_partial_def (pd, set, set,