[PATCH] remove unused field hash_state::seed

[Jay Foad]

Chandler,

This seems obvious to me, but just in case: OK to commit?

Thanks,
Jay.
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Index: include/llvm/ADT/Hashing.h
===================================================================
--- include/llvm/ADT/Hashing.h	(revision 207701)
+++ include/llvm/ADT/Hashing.h	(working copy)
@@ -265,7 +265,6 @@
 /// keeps 56 bytes of arbitrary state.
 struct hash_state {
   uint64_t h0, h1, h2, h3, h4, h5, h6;
-  uint64_t seed;
 
   /// \brief Create a new hash_state structure and initialize it based on the
   /// seed and the first 64-byte chunk.
@@ -273,7 +272,7 @@
   static hash_state create(const char *s, uint64_t seed) {
     hash_state state = {
       0, seed, hash_16_bytes(seed, k1), rotate(seed ^ k1, 49),
-      seed * k1, shift_mix(seed), 0, seed };
+      seed * k1, shift_mix(seed), 0 };
     state.h6 = hash_16_bytes(state.h4, state.h5);
     state.mix(s);
     return state;