From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Thu, 15 Jan 2015 17:31:18 +0000 (-0800)
Subject: util/hash_set:  Rework the API to know about hashing
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=153b8b35257fb5d68735b5e43e48b0cdb8b15170;p=mesa.git

util/hash_set:  Rework the API to know about hashing

Previously, the set API required the user to do all of the hashing of keys
as it passed them in.  Since the hashing function is intrinsically tied to
the comparison function, it makes sense for the hash set to know about
it.  Also, it makes for a somewhat clumsy API as the user is constantly
calling hashing functions many of which have long names.  This is
especially bad when the standard call looks something like

_mesa_set_add(ht, _mesa_pointer_hash(key), key);

In the above case, there is no reason why the hash set shouldn't do the
hashing for you.  We leave the option for you to do your own hashing if
it's more efficient, but it's no longer needed.  Also, if you do do your
own hashing, the hash set will assert that your hash matches what it
expects out of the hashing function.  This should make it harder to mess up
your hashing.

This is analygous to 94303a0750 where we did this for hash_table

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
---

diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index da9b7a1d3b6..f112db8dd56 100644
--- a/src/glsl/nir/nir.c
+++ b/src/glsl/nir/nir.c
@@ -61,9 +61,12 @@ reg_create(void *mem_ctx, struct exec_list *list)
 {
    nir_register *reg = ralloc(mem_ctx, nir_register);
 
-   reg->uses = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
-   reg->defs = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
-   reg->if_uses = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
+   reg->uses = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                _mesa_key_pointer_equal);
+   reg->defs = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                _mesa_key_pointer_equal);
+   reg->if_uses = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                   _mesa_key_pointer_equal);
 
    reg->num_components = 0;
    reg->num_array_elems = 0;
@@ -175,7 +178,7 @@ nir_dest nir_dest_copy(nir_dest dest, void *mem_ctx)
 static inline void
 block_add_pred(nir_block *block, nir_block *pred)
 {
-   _mesa_set_add(block->predecessors, _mesa_hash_pointer(pred), pred);
+   _mesa_set_add(block->predecessors, pred);
 }
 
 static void
@@ -208,8 +211,7 @@ unlink_blocks(nir_block *pred, nir_block *succ)
       pred->successors[1] = NULL;
    }
 
-   struct set_entry *entry = _mesa_set_search(succ->predecessors,
-                                              _mesa_hash_pointer(pred), pred);
+   struct set_entry *entry = _mesa_set_search(succ->predecessors, pred);
 
    assert(entry);
 
@@ -274,9 +276,11 @@ nir_block_create(void *mem_ctx)
    cf_init(&block->cf_node, nir_cf_node_block);
 
    block->successors[0] = block->successors[1] = NULL;
-   block->predecessors = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
+   block->predecessors = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                          _mesa_key_pointer_equal);
    block->imm_dom = NULL;
-   block->dom_frontier = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
+   block->dom_frontier = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                          _mesa_key_pointer_equal);
 
    exec_list_make_empty(&block->instr_list);
 
@@ -1001,7 +1005,7 @@ update_if_uses(nir_cf_node *node)
                              if_stmt->condition.ssa->if_uses :
                              if_stmt->condition.reg.reg->uses;
 
-   _mesa_set_add(if_uses_set, _mesa_hash_pointer(if_stmt), if_stmt);
+   _mesa_set_add(if_uses_set, if_stmt);
 }
 
 void
@@ -1168,7 +1172,7 @@ add_use_cb(nir_src *src, void *state)
 
    struct set *uses_set = src->is_ssa ? src->ssa->uses : src->reg.reg->uses;
 
-   _mesa_set_add(uses_set, _mesa_hash_pointer(instr), instr);
+   _mesa_set_add(uses_set, instr);
 
    return true;
 }
@@ -1194,7 +1198,7 @@ add_reg_def_cb(nir_dest *dest, void *state)
    nir_instr *instr = (nir_instr *) state;
 
    if (!dest->is_ssa)
-      _mesa_set_add(dest->reg.reg->defs, _mesa_hash_pointer(instr), instr);
+      _mesa_set_add(dest->reg.reg->defs, instr);
 
    return true;
 }
@@ -1313,9 +1317,7 @@ remove_use_cb(nir_src *src, void *state)
 
    struct set *uses_set = src->is_ssa ? src->ssa->uses : src->reg.reg->uses;
 
-   struct set_entry *entry = _mesa_set_search(uses_set,
-                                              _mesa_hash_pointer(instr),
-                                              instr);
+   struct set_entry *entry = _mesa_set_search(uses_set, instr);
    if (entry)
       _mesa_set_remove(uses_set, entry);
 
@@ -1332,9 +1334,7 @@ remove_def_cb(nir_dest *dest, void *state)
 
    nir_register *reg = dest->reg.reg;
 
-   struct set_entry *entry = _mesa_set_search(reg->defs,
-                                              _mesa_hash_pointer(instr),
-                                              instr);
+   struct set_entry *entry = _mesa_set_search(reg->defs, instr);
    if (entry)
       _mesa_set_remove(reg->defs, entry);
 
@@ -1741,9 +1741,7 @@ nir_instr_rewrite_src(nir_instr *instr, nir_src *src, nir_src new_src)
       nir_ssa_def *old_ssa = src->ssa;
       *src = new_src;
       if (old_ssa && nir_foreach_src(instr, src_does_not_use_def, old_ssa)) {
-         struct set_entry *entry = _mesa_set_search(old_ssa->uses,
-                                                    _mesa_hash_pointer(instr),
-                                                    instr);
+         struct set_entry *entry = _mesa_set_search(old_ssa->uses, instr);
          assert(entry);
          _mesa_set_remove(old_ssa->uses, entry);
       }
@@ -1754,9 +1752,7 @@ nir_instr_rewrite_src(nir_instr *instr, nir_src *src, nir_src new_src)
       nir_register *old_reg = src->reg.reg;
       *src = new_src;
       if (old_reg && nir_foreach_src(instr, src_does_not_use_reg, old_reg)) {
-         struct set_entry *entry = _mesa_set_search(old_reg->uses,
-                                                    _mesa_hash_pointer(instr),
-                                                    instr);
+         struct set_entry *entry = _mesa_set_search(old_reg->uses, instr);
          assert(entry);
          _mesa_set_remove(old_reg->uses, entry);
       }
@@ -1764,10 +1760,10 @@ nir_instr_rewrite_src(nir_instr *instr, nir_src *src, nir_src new_src)
 
    if (new_src.is_ssa) {
       if (new_src.ssa)
-         _mesa_set_add(new_src.ssa->uses, _mesa_hash_pointer(instr), instr);
+         _mesa_set_add(new_src.ssa->uses, instr);
    } else {
       if (new_src.reg.reg)
-         _mesa_set_add(new_src.reg.reg->uses, _mesa_hash_pointer(instr), instr);
+         _mesa_set_add(new_src.reg.reg->uses, instr);
    }
 }
 
@@ -1779,8 +1775,10 @@ nir_ssa_def_init(nir_instr *instr, nir_ssa_def *def,
 
    def->name = name;
    def->parent_instr = instr;
-   def->uses = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
-   def->if_uses = _mesa_set_create(mem_ctx, _mesa_key_pointer_equal);
+   def->uses = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                _mesa_key_pointer_equal);
+   def->if_uses = _mesa_set_create(mem_ctx, _mesa_hash_pointer,
+                                   _mesa_key_pointer_equal);
    def->num_components = num_components;
 
    if (instr->block) {
@@ -1835,7 +1833,7 @@ nir_ssa_def_rewrite_uses(nir_ssa_def *def, nir_src new_src, void *mem_ctx)
 
       _mesa_set_remove(def->uses, entry);
       nir_foreach_src(instr, ssa_def_rewrite_uses_src, &state);
-      _mesa_set_add(new_uses, _mesa_hash_pointer(instr), instr);
+      _mesa_set_add(new_uses, instr);
    }
 
    set_foreach(def->if_uses, entry) {
@@ -1843,7 +1841,7 @@ nir_ssa_def_rewrite_uses(nir_ssa_def *def, nir_src new_src, void *mem_ctx)
 
       _mesa_set_remove(def->if_uses, entry);
       if_use->condition = nir_src_copy(new_src, mem_ctx);
-      _mesa_set_add(new_if_uses, _mesa_hash_pointer(if_use), if_use);
+      _mesa_set_add(new_if_uses, if_use);
    }
 }
 
diff --git a/src/glsl/nir/nir_dominance.c b/src/glsl/nir/nir_dominance.c
index 76847847d64..67fdcc69725 100644
--- a/src/glsl/nir/nir_dominance.c
+++ b/src/glsl/nir/nir_dominance.c
@@ -113,8 +113,7 @@ calc_dom_frontier_cb(nir_block *block, void *state)
       set_foreach(block->predecessors, entry) {
          nir_block *runner = (nir_block *) entry->key;
          while (runner != block->imm_dom) {
-            _mesa_set_add(runner->dom_frontier, _mesa_hash_pointer(block),
-                          block);
+            _mesa_set_add(runner->dom_frontier, block);
             runner = runner->imm_dom;
          }
       }
diff --git a/src/glsl/nir/nir_from_ssa.c b/src/glsl/nir/nir_from_ssa.c
index 97c09b3b880..025869921f7 100644
--- a/src/glsl/nir/nir_from_ssa.c
+++ b/src/glsl/nir/nir_from_ssa.c
@@ -353,16 +353,14 @@ isolate_phi_nodes_block(nir_block *block, void *void_state)
          exec_list_push_tail(&pcopy->entries, &entry->node);
 
          entry->src = nir_src_copy(src->src, state->dead_ctx);
-         _mesa_set_add(src->src.ssa->uses,
-                       _mesa_hash_pointer(&pcopy->instr), &pcopy->instr);
+         _mesa_set_add(src->src.ssa->uses, &pcopy->instr);
 
          entry->dest.is_ssa = true;
          nir_ssa_def_init(&pcopy->instr, &entry->dest.ssa,
                           phi->dest.ssa.num_components, src->src.ssa->name);
 
          struct set_entry *use_entry =
-            _mesa_set_search(src->src.ssa->uses,
-                             _mesa_hash_pointer(instr), instr);
+            _mesa_set_search(src->src.ssa->uses, instr);
          if (use_entry)
             /* It is possible that a phi node can use the same source twice
              * but for different basic blocks.  If that happens, entry will
@@ -374,7 +372,7 @@ isolate_phi_nodes_block(nir_block *block, void *void_state)
             _mesa_set_remove(src->src.ssa->uses, use_entry);
 
          src->src.ssa = &entry->dest.ssa;
-         _mesa_set_add(entry->dest.ssa.uses, _mesa_hash_pointer(instr), instr);
+         _mesa_set_add(entry->dest.ssa.uses, instr);
       }
 
       nir_parallel_copy_entry *entry = ralloc(state->dead_ctx,
@@ -393,9 +391,7 @@ isolate_phi_nodes_block(nir_block *block, void *void_state)
 
       entry->src.is_ssa = true;
       entry->src.ssa = &phi->dest.ssa;
-      _mesa_set_add(phi->dest.ssa.uses,
-                    _mesa_hash_pointer(&block_pcopy->instr),
-                    &block_pcopy->instr);
+      _mesa_set_add(phi->dest.ssa.uses, &block_pcopy->instr);
    }
 
    return true;
@@ -545,7 +541,7 @@ rewrite_ssa_src(nir_src *src, void *void_state)
 
       /* We don't need to remove it from the uses set because that is going
        * away.  We just need to add it to the one for the register. */
-      _mesa_set_add(reg->uses, _mesa_hash_pointer(state->instr), state->instr);
+      _mesa_set_add(reg->uses, state->instr);
    }
 
    return true;
@@ -570,7 +566,7 @@ rewrite_ssa_dest(nir_dest *dest, void *void_state)
       memset(dest, 0, sizeof *dest);
       dest->reg.reg = reg;
 
-      _mesa_set_add(reg->defs, _mesa_hash_pointer(state->instr), state->instr);
+      _mesa_set_add(reg->defs, state->instr);
    }
 
    return true;
@@ -605,8 +601,7 @@ resolve_registers_block(nir_block *block, void *void_state)
          memset(&following_if->condition, 0, sizeof following_if->condition);
          following_if->condition.reg.reg = reg;
 
-         _mesa_set_add(reg->if_uses, _mesa_hash_pointer(following_if),
-                       following_if);
+         _mesa_set_add(reg->if_uses, following_if);
       } else {
          /* FIXME: We really shouldn't hit this.  We should be doing
           * constant control flow propagation.
diff --git a/src/glsl/nir/nir_lower_vars_to_ssa.c b/src/glsl/nir/nir_lower_vars_to_ssa.c
index e331bcdabc3..4df9bdd8897 100644
--- a/src/glsl/nir/nir_lower_vars_to_ssa.c
+++ b/src/glsl/nir/nir_lower_vars_to_ssa.c
@@ -443,10 +443,10 @@ register_load_instr(nir_intrinsic_instr *load_instr,
       return;
 
    if (node->loads == NULL)
-      node->loads = _mesa_set_create(state->dead_ctx,
+      node->loads = _mesa_set_create(state->dead_ctx, _mesa_hash_pointer,
                                      _mesa_key_pointer_equal);
 
-   _mesa_set_add(node->loads, _mesa_hash_pointer(load_instr), load_instr);
+   _mesa_set_add(node->loads, load_instr);
 }
 
 static void
@@ -458,10 +458,10 @@ register_store_instr(nir_intrinsic_instr *store_instr,
       return;
 
    if (node->stores == NULL)
-      node->stores = _mesa_set_create(state->dead_ctx,
+      node->stores = _mesa_set_create(state->dead_ctx, _mesa_hash_pointer,
                                      _mesa_key_pointer_equal);
 
-   _mesa_set_add(node->stores, _mesa_hash_pointer(store_instr), store_instr);
+   _mesa_set_add(node->stores, store_instr);
 }
 
 static void
@@ -476,10 +476,10 @@ register_copy_instr(nir_intrinsic_instr *copy_instr,
          continue;
 
       if (node->copies == NULL)
-         node->copies = _mesa_set_create(state->dead_ctx,
+         node->copies = _mesa_set_create(state->dead_ctx, _mesa_hash_pointer,
                                          _mesa_key_pointer_equal);
 
-      _mesa_set_add(node->copies, _mesa_hash_pointer(copy_instr), copy_instr);
+      _mesa_set_add(node->copies, copy_instr);
    }
 }
 
@@ -539,9 +539,7 @@ lower_copies_to_load_store(struct deref_node *node,
          if (arg_node == NULL)
             continue;
 
-         struct set_entry *arg_entry = _mesa_set_search(arg_node->copies,
-                                                        copy_entry->hash,
-                                                        copy);
+         struct set_entry *arg_entry = _mesa_set_search(arg_node->copies, copy);
          assert(arg_entry);
          _mesa_set_remove(node->copies, arg_entry);
       }
@@ -714,7 +712,7 @@ add_phi_sources(nir_block *block, nir_block *pred,
       src->src.is_ssa = true;
       src->src.ssa = get_ssa_def_for_block(node, pred, state);
 
-      _mesa_set_add(src->src.ssa->uses, _mesa_hash_pointer(instr), instr);
+      _mesa_set_add(src->src.ssa->uses, instr);
 
       exec_list_push_tail(&phi->srcs, &src->node);
    }
@@ -1039,6 +1037,7 @@ nir_lower_vars_to_ssa_impl(nir_function_impl *impl)
    nir_foreach_block(impl, register_variable_uses_block, &state);
 
    struct set *outputs = _mesa_set_create(state.dead_ctx,
+                                          _mesa_hash_pointer,
                                           _mesa_key_pointer_equal);
 
    bool progress = false;
@@ -1075,7 +1074,7 @@ nir_lower_vars_to_ssa_impl(nir_function_impl *impl)
       }
 
       if (deref->var->data.mode == nir_var_shader_out)
-         _mesa_set_add(outputs, _mesa_hash_pointer(node), node);
+         _mesa_set_add(outputs, node);
 
       foreach_deref_node_match(deref, lower_copies_to_load_store, &state);
    }
diff --git a/src/glsl/nir/nir_opt_copy_propagate.c b/src/glsl/nir/nir_opt_copy_propagate.c
index aa2df1be857..dd0ec01efd6 100644
--- a/src/glsl/nir/nir_opt_copy_propagate.c
+++ b/src/glsl/nir/nir_opt_copy_propagate.c
@@ -114,15 +114,12 @@ rewrite_src_instr(nir_src *src, nir_ssa_def *new_def, nir_instr *parent_instr)
    search_state.found = false;
    nir_foreach_src(parent_instr, search_def, &search_state);
    if (!search_state.found) {
-      struct set_entry *entry =
-         _mesa_set_search(old_def->uses, _mesa_hash_pointer(parent_instr),
-                          parent_instr);
+      struct set_entry *entry = _mesa_set_search(old_def->uses, parent_instr);
       assert(entry);
       _mesa_set_remove(old_def->uses, entry);
    }
 
-   _mesa_set_add(new_def->uses, _mesa_hash_pointer(parent_instr),
-                 parent_instr);
+   _mesa_set_add(new_def->uses, parent_instr);
 }
 
 static void
@@ -132,12 +129,11 @@ rewrite_src_if(nir_if *if_stmt, nir_ssa_def *new_def)
 
    if_stmt->condition.ssa = new_def;
 
-   struct set_entry *entry =
-      _mesa_set_search(old_def->if_uses, _mesa_hash_pointer(if_stmt), if_stmt);
+   struct set_entry *entry = _mesa_set_search(old_def->if_uses, if_stmt);
    assert(entry);
    _mesa_set_remove(old_def->if_uses, entry);
 
-   _mesa_set_add(new_def->if_uses, _mesa_hash_pointer(if_stmt), if_stmt);
+   _mesa_set_add(new_def->if_uses, if_stmt);
 }
 
 static bool
diff --git a/src/glsl/nir/nir_print.c b/src/glsl/nir/nir_print.c
index fe5ceeaf035..84bb97957ba 100644
--- a/src/glsl/nir/nir_print.c
+++ b/src/glsl/nir/nir_print.c
@@ -210,8 +210,7 @@ print_var_decl(nir_variable *var, print_var_state *state, FILE *fp)
 
    glsl_print_type(var->type, fp);
 
-   struct set_entry *entry =
-      _mesa_set_search(state->syms, _mesa_hash_string(var->name), var->name);
+   struct set_entry *entry = _mesa_set_search(state->syms, var->name);
 
    char *name;
 
@@ -232,7 +231,7 @@ print_var_decl(nir_variable *var, print_var_state *state, FILE *fp)
 
    fprintf(fp, "\n");
 
-   _mesa_set_add(state->syms, _mesa_hash_string(name), name);
+   _mesa_set_add(state->syms, name);
    _mesa_hash_table_insert(state->ht, var, name);
 }
 
@@ -818,7 +817,8 @@ init_print_state(print_var_state *state)
 {
    state->ht = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
                                        _mesa_key_pointer_equal);
-   state->syms = _mesa_set_create(NULL, _mesa_key_string_equal);
+   state->syms = _mesa_set_create(NULL, _mesa_key_hash_string,
+                                  _mesa_key_string_equal);
    state->index = 0;
 }
 
diff --git a/src/glsl/nir/nir_remove_dead_variables.c b/src/glsl/nir/nir_remove_dead_variables.c
index 38b291ca04b..e37535f7988 100644
--- a/src/glsl/nir/nir_remove_dead_variables.c
+++ b/src/glsl/nir/nir_remove_dead_variables.c
@@ -33,7 +33,7 @@ add_var_use_intrinsic(nir_intrinsic_instr *instr, struct set *live)
    unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables;
    for (unsigned i = 0; i < num_vars; i++) {
       nir_variable *var = instr->variables[i]->var;
-      _mesa_set_add(live, _mesa_hash_pointer(var), var);
+      _mesa_set_add(live, var);
    }
 }
 
@@ -42,12 +42,12 @@ add_var_use_call(nir_call_instr *instr, struct set *live)
 {
    if (instr->return_deref != NULL) {
       nir_variable *var = instr->return_deref->var;
-      _mesa_set_add(live, _mesa_hash_pointer(var), var);
+      _mesa_set_add(live, var);
    }
 
    for (unsigned i = 0; i < instr->num_params; i++) {
       nir_variable *var = instr->params[i]->var;
-      _mesa_set_add(live, _mesa_hash_pointer(var), var);
+      _mesa_set_add(live, var);
    }
 }
 
@@ -56,7 +56,7 @@ add_var_use_tex(nir_tex_instr *instr, struct set *live)
 {
    if (instr->sampler != NULL) {
       nir_variable *var = instr->sampler->var;
-      _mesa_set_add(live, _mesa_hash_pointer(var), var);
+      _mesa_set_add(live, var);
    }
 }
 
@@ -101,8 +101,7 @@ static void
 remove_dead_local_vars(nir_function_impl *impl, struct set *live)
 {
    foreach_list_typed_safe(nir_variable, var, node, &impl->locals) {
-      struct set_entry *entry =
-         _mesa_set_search(live, _mesa_hash_pointer(var), var);
+      struct set_entry *entry = _mesa_set_search(live, var);
       if (entry == NULL)
          exec_node_remove(&var->node);
    }
@@ -112,8 +111,7 @@ static void
 remove_dead_global_vars(nir_shader *shader, struct set *live)
 {
    foreach_list_typed_safe(nir_variable, var, node, &shader->globals) {
-      struct set_entry *entry =
-         _mesa_set_search(live, _mesa_hash_pointer(var), var);
+      struct set_entry *entry = _mesa_set_search(live, var);
       if (entry == NULL)
          exec_node_remove(&var->node);
    }
@@ -123,7 +121,7 @@ void
 nir_remove_dead_variables(nir_shader *shader)
 {
    struct set *live =
-      _mesa_set_create(NULL, _mesa_key_pointer_equal);
+      _mesa_set_create(NULL, _mesa_hash_pointer, _mesa_key_pointer_equal);
 
    add_var_use_shader(shader, live);
 
diff --git a/src/glsl/nir/nir_to_ssa.c b/src/glsl/nir/nir_to_ssa.c
index 58e8829e1c4..03cce9266ff 100644
--- a/src/glsl/nir/nir_to_ssa.c
+++ b/src/glsl/nir/nir_to_ssa.c
@@ -194,11 +194,9 @@ rewrite_use(nir_src *src, void *_state)
    src->ssa = get_ssa_src(src->reg.reg, state);
 
    if (state->parent_instr)
-      _mesa_set_add(src->ssa->uses, _mesa_hash_pointer(state->parent_instr),
-                  state->parent_instr);
+      _mesa_set_add(src->ssa->uses, state->parent_instr);
    else
-      _mesa_set_add(src->ssa->if_uses, _mesa_hash_pointer(state->parent_if),
-                  state->parent_if);
+      _mesa_set_add(src->ssa->if_uses, state->parent_if);
    return true;
 }
 
diff --git a/src/glsl/nir/nir_validate.c b/src/glsl/nir/nir_validate.c
index 0d267baa21f..77bc5afa38e 100644
--- a/src/glsl/nir/nir_validate.c
+++ b/src/glsl/nir/nir_validate.c
@@ -92,9 +92,7 @@ validate_reg_src(nir_reg_src *src, validate_state *state)
 {
    assert(src->reg != NULL);
 
-   struct set_entry *entry =
-      _mesa_set_search(src->reg->uses, _mesa_hash_pointer(state->instr),
-                       state->instr);
+   struct set_entry *entry = _mesa_set_search(src->reg->uses, state->instr);
    assert(entry && "use not in nir_register.uses");
 
    struct hash_entry *entry2;
@@ -103,8 +101,7 @@ validate_reg_src(nir_reg_src *src, validate_state *state)
    assert(entry2);
 
    reg_validate_state *reg_state = (reg_validate_state *) entry2->data;
-   _mesa_set_add(reg_state->uses, _mesa_hash_pointer(state->instr),
-                 state->instr);
+   _mesa_set_add(reg_state->uses, state->instr);
 
    if (!src->reg->is_global) {
       assert(reg_state->where_defined == state->impl &&
@@ -137,8 +134,7 @@ validate_ssa_src(nir_ssa_def *def, validate_state *state)
 
    struct set_entry *entry2;
 
-   entry2 = _mesa_set_search(def->uses, _mesa_hash_pointer(state->instr),
-                              state->instr);
+   entry2 = _mesa_set_search(def->uses, state->instr);
 
    assert(entry2 && "SSA use missing");
 
@@ -183,9 +179,7 @@ validate_reg_dest(nir_reg_dest *dest, validate_state *state)
 {
    assert(dest->reg != NULL);
 
-   struct set_entry *entry =
-      _mesa_set_search(dest->reg->defs, _mesa_hash_pointer(state->instr),
-                       state->instr);
+   struct set_entry *entry = _mesa_set_search(dest->reg->defs, state->instr);
    assert(entry && "definition not in nir_register.defs");
 
    struct hash_entry *entry2;
@@ -194,8 +188,7 @@ validate_reg_dest(nir_reg_dest *dest, validate_state *state)
    assert(entry2);
 
    reg_validate_state *reg_state = (reg_validate_state *) entry2->data;
-   _mesa_set_add(reg_state->defs, _mesa_hash_pointer(state->instr),
-                 state->instr);
+   _mesa_set_add(reg_state->defs, state->instr);
 
    if (!dest->reg->is_global) {
       assert(reg_state->where_defined == state->impl &&
@@ -553,8 +546,7 @@ validate_block(nir_block *block, validate_state *state)
    for (unsigned i = 0; i < 2; i++) {
       if (block->successors[i] != NULL) {
          struct set_entry *entry =
-            _mesa_set_search(block->successors[i]->predecessors,
-                             _mesa_hash_pointer(block), block);
+            _mesa_set_search(block->successors[i]->predecessors, block);
          assert(entry);
 
          validate_phi_srcs(block, block->successors[i], state);
@@ -585,13 +577,11 @@ validate_if(nir_if *if_stmt, validate_state *state)
 
    if (!if_stmt->condition.is_ssa) {
       nir_register *reg = if_stmt->condition.reg.reg;
-      struct set_entry *entry =
-         _mesa_set_search(reg->if_uses, _mesa_hash_pointer(if_stmt), if_stmt);
+      struct set_entry *entry =  _mesa_set_search(reg->if_uses, if_stmt);
       assert(entry);
    } else {
       nir_ssa_def *def = if_stmt->condition.ssa;
-      struct set_entry *entry =
-         _mesa_set_search(def->if_uses, _mesa_hash_pointer(if_stmt), if_stmt);
+      struct set_entry *entry = _mesa_set_search(def->if_uses, if_stmt);
       assert(entry);
    }
 
@@ -679,8 +669,10 @@ prevalidate_reg_decl(nir_register *reg, bool is_global, validate_state *state)
    BITSET_SET(state->regs_found, reg->index);
 
    reg_validate_state *reg_state = ralloc(state->regs, reg_validate_state);
-   reg_state->uses = _mesa_set_create(reg_state, _mesa_key_pointer_equal);
-   reg_state->defs = _mesa_set_create(reg_state, _mesa_key_pointer_equal);
+   reg_state->uses = _mesa_set_create(reg_state, _mesa_hash_pointer,
+                                      _mesa_key_pointer_equal);
+   reg_state->defs = _mesa_set_create(reg_state, _mesa_hash_pointer,
+                                      _mesa_key_pointer_equal);
 
    reg_state->where_defined = is_global ? NULL : state->impl;
 
@@ -699,8 +691,7 @@ postvalidate_reg_decl(nir_register *reg, validate_state *state)
       struct set_entry *entry;
       set_foreach(reg->uses, entry) {
          struct set_entry *entry2 =
-            _mesa_set_search(reg_state->uses, _mesa_hash_pointer(entry->key),
-                             entry->key);
+            _mesa_set_search(reg_state->uses, entry->key);
 
          if (entry2 == NULL) {
             printf("%p\n", entry->key);
@@ -715,8 +706,7 @@ postvalidate_reg_decl(nir_register *reg, validate_state *state)
       struct set_entry *entry;
       set_foreach(reg->defs, entry) {
          struct set_entry *entry2 =
-            _mesa_set_search(reg_state->defs, _mesa_hash_pointer(entry->key),
-                             entry->key);
+            _mesa_set_search(reg_state->defs, entry->key);
 
          if (entry2 == NULL) {
             printf("%p\n", entry->key);
diff --git a/src/mesa/drivers/dri/i965/intel_fbo.c b/src/mesa/drivers/dri/i965/intel_fbo.c
index 77d128200d9..d12f4ae0821 100644
--- a/src/mesa/drivers/dri/i965/intel_fbo.c
+++ b/src/mesa/drivers/dri/i965/intel_fbo.c
@@ -1008,7 +1008,7 @@ brw_render_cache_set_clear(struct brw_context *brw)
 void
 brw_render_cache_set_add_bo(struct brw_context *brw, drm_intel_bo *bo)
 {
-   _mesa_set_add(brw->render_cache, _mesa_hash_pointer(bo), bo);
+   _mesa_set_add(brw->render_cache, bo);
 }
 
 /**
@@ -1026,7 +1026,7 @@ brw_render_cache_set_add_bo(struct brw_context *brw, drm_intel_bo *bo)
 void
 brw_render_cache_set_check_flush(struct brw_context *brw, drm_intel_bo *bo)
 {
-   if (!_mesa_set_search(brw->render_cache, _mesa_hash_pointer(bo), bo))
+   if (!_mesa_set_search(brw->render_cache, bo))
       return;
 
    intel_batchbuffer_emit_mi_flush(brw);
@@ -1050,5 +1050,6 @@ intel_fbo_init(struct brw_context *brw)
    dd->EGLImageTargetRenderbufferStorage =
       intel_image_target_renderbuffer_storage;
 
-   brw->render_cache = _mesa_set_create(brw, _mesa_key_pointer_equal);
+   brw->render_cache = _mesa_set_create(brw, _mesa_hash_pointer,
+                                        _mesa_key_pointer_equal);
 }
diff --git a/src/mesa/main/shared.c b/src/mesa/main/shared.c
index 2389c13159e..ccf5355f3c4 100644
--- a/src/mesa/main/shared.c
+++ b/src/mesa/main/shared.c
@@ -119,7 +119,8 @@ _mesa_alloc_shared_state(struct gl_context *ctx)
    shared->FrameBuffers = _mesa_NewHashTable();
    shared->RenderBuffers = _mesa_NewHashTable();
 
-   shared->SyncObjects = _mesa_set_create(NULL, _mesa_key_pointer_equal);
+   shared->SyncObjects = _mesa_set_create(NULL, _mesa_hash_pointer,
+                                          _mesa_key_pointer_equal);
 
    return shared;
 }
diff --git a/src/mesa/main/syncobj.c b/src/mesa/main/syncobj.c
index 8832775ebb8..c1b2d3bed54 100644
--- a/src/mesa/main/syncobj.c
+++ b/src/mesa/main/syncobj.c
@@ -173,9 +173,7 @@ _mesa_validate_sync(struct gl_context *ctx,
                     const struct gl_sync_object *syncObj)
 {
    return (syncObj != NULL)
-      && _mesa_set_search(ctx->Shared->SyncObjects,
-                          _mesa_hash_pointer(syncObj),
-                          syncObj) != NULL
+      && _mesa_set_search(ctx->Shared->SyncObjects, syncObj) != NULL
       && (syncObj->Type == GL_SYNC_FENCE)
       && !syncObj->DeletePending;
 }
@@ -198,9 +196,7 @@ _mesa_unref_sync_object(struct gl_context *ctx, struct gl_sync_object *syncObj)
    mtx_lock(&ctx->Shared->Mutex);
    syncObj->RefCount--;
    if (syncObj->RefCount == 0) {
-      entry = _mesa_set_search(ctx->Shared->SyncObjects,
-                               _mesa_hash_pointer(syncObj),
-                               syncObj);
+      entry = _mesa_set_search(ctx->Shared->SyncObjects, syncObj);
       assert (entry != NULL);
       _mesa_set_remove(ctx->Shared->SyncObjects, entry);
       mtx_unlock(&ctx->Shared->Mutex);
@@ -289,9 +285,7 @@ _mesa_FenceSync(GLenum condition, GLbitfield flags)
       ctx->Driver.FenceSync(ctx, syncObj, condition, flags);
 
       mtx_lock(&ctx->Shared->Mutex);
-      _mesa_set_add(ctx->Shared->SyncObjects,
-                    _mesa_hash_pointer(syncObj),
-                    syncObj);
+      _mesa_set_add(ctx->Shared->SyncObjects, syncObj);
       mtx_unlock(&ctx->Shared->Mutex);
 
       return (GLsync) syncObj;
diff --git a/src/mesa/main/vdpau.c b/src/mesa/main/vdpau.c
index 89d731b6e74..0efa56e4f41 100644
--- a/src/mesa/main/vdpau.c
+++ b/src/mesa/main/vdpau.c
@@ -73,7 +73,8 @@ _mesa_VDPAUInitNV(const GLvoid *vdpDevice, const GLvoid *getProcAddress)
 
    ctx->vdpDevice = vdpDevice;
    ctx->vdpGetProcAddress = getProcAddress;
-   ctx->vdpSurfaces = _mesa_set_create(NULL, _mesa_key_pointer_equal);
+   ctx->vdpSurfaces = _mesa_set_create(NULL, _mesa_hash_pointer,
+                                       _mesa_key_pointer_equal);
 }
 
 static void
@@ -179,7 +180,7 @@ register_surface(struct gl_context *ctx, GLboolean isOutput,
       _mesa_reference_texobj(&surf->textures[i], tex);
    }
 
-   _mesa_set_add(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf);
+   _mesa_set_add(ctx->vdpSurfaces, surf);
 
    return (GLintptr)surf;
 }
@@ -227,7 +228,7 @@ _mesa_VDPAUIsSurfaceNV(GLintptr surface)
       return false;
    }
 
-   if (!_mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf)) {
+   if (!_mesa_set_search(ctx->vdpSurfaces, surf)) {
       return false;
    }
 
@@ -251,7 +252,7 @@ _mesa_VDPAUUnregisterSurfaceNV(GLintptr surface)
    if (surface == 0)
       return;
 
-   entry = _mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf);
+   entry = _mesa_set_search(ctx->vdpSurfaces, surf);
    if (!entry) {
       _mesa_error(ctx, GL_INVALID_VALUE, "VDPAUUnregisterSurfaceNV");
       return;
@@ -280,7 +281,7 @@ _mesa_VDPAUGetSurfaceivNV(GLintptr surface, GLenum pname, GLsizei bufSize,
       return;
    }
 
-   if (!_mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf)) {
+   if (!_mesa_set_search(ctx->vdpSurfaces, surf)) {
       _mesa_error(ctx, GL_INVALID_VALUE, "VDPAUGetSurfaceivNV");
       return;
    }
@@ -312,7 +313,7 @@ _mesa_VDPAUSurfaceAccessNV(GLintptr surface, GLenum access)
       return;
    }
 
-   if (!_mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf)) {
+   if (!_mesa_set_search(ctx->vdpSurfaces, surf)) {
       _mesa_error(ctx, GL_INVALID_VALUE, "VDPAUSurfaceAccessNV");
       return;
    }
@@ -346,7 +347,7 @@ _mesa_VDPAUMapSurfacesNV(GLsizei numSurfaces, const GLintptr *surfaces)
    for (i = 0; i < numSurfaces; ++i) {
       struct vdp_surface *surf = (struct vdp_surface *)surfaces[i];
 
-      if (!_mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf)) {
+      if (!_mesa_set_search(ctx->vdpSurfaces, surf)) {
          _mesa_error(ctx, GL_INVALID_VALUE, "VDPAUSurfaceAccessNV");
          return;
       }
@@ -400,7 +401,7 @@ _mesa_VDPAUUnmapSurfacesNV(GLsizei numSurfaces, const GLintptr *surfaces)
    for (i = 0; i < numSurfaces; ++i) {
       struct vdp_surface *surf = (struct vdp_surface *)surfaces[i];
 
-      if (!_mesa_set_search(ctx->vdpSurfaces, _mesa_hash_pointer(surf), surf)) {
+      if (!_mesa_set_search(ctx->vdpSurfaces, surf)) {
          _mesa_error(ctx, GL_INVALID_VALUE, "VDPAUSurfaceAccessNV");
          return;
       }
diff --git a/src/util/set.c b/src/util/set.c
index 3f4a4acb2ce..d170b5007bd 100644
--- a/src/util/set.c
+++ b/src/util/set.c
@@ -33,6 +33,7 @@
  */
 
 #include <stdlib.h>
+#include <assert.h>
 
 #include "macros.h"
 #include "ralloc.h"
@@ -103,6 +104,7 @@ entry_is_present(struct set_entry *entry)
 
 struct set *
 _mesa_set_create(void *mem_ctx,
+                 uint32_t (*key_hash_function)(const void *key),
                  bool (*key_equals_function)(const void *a,
                                              const void *b))
 {
@@ -116,6 +118,7 @@ _mesa_set_create(void *mem_ctx,
    ht->size = hash_sizes[ht->size_index].size;
    ht->rehash = hash_sizes[ht->size_index].rehash;
    ht->max_entries = hash_sizes[ht->size_index].max_entries;
+   ht->key_hash_function = key_hash_function;
    ht->key_equals_function = key_equals_function;
    ht->table = rzalloc_array(ht, struct set_entry, ht->size);
    ht->entries = 0;
@@ -157,8 +160,8 @@ _mesa_set_destroy(struct set *ht, void (*delete_function)(struct set_entry *entr
  *
  * Returns NULL if no entry is found.
  */
-struct set_entry *
-_mesa_set_search(const struct set *ht, uint32_t hash, const void *key)
+static struct set_entry *
+set_search(const struct set *ht, uint32_t hash, const void *key)
 {
    uint32_t hash_address;
 
@@ -184,6 +187,25 @@ _mesa_set_search(const struct set *ht, uint32_t hash, const void *key)
    return NULL;
 }
 
+struct set_entry *
+_mesa_set_search(const struct set *set, const void *key)
+{
+   assert(set->key_hash_function);
+   return set_search(set, set->key_hash_function(key), key);
+}
+
+struct set_entry *
+_mesa_set_search_pre_hashed(const struct set *set, uint32_t hash,
+                            const void *key)
+{
+   assert(set->key_hash_function == NULL ||
+          hash == set->key_hash_function(key));
+   return set_search(set, hash, key);
+}
+
+static struct set_entry *
+set_add(struct set *ht, uint32_t hash, const void *key);
+
 static void
 set_rehash(struct set *ht, int new_size_index)
 {
@@ -212,7 +234,7 @@ set_rehash(struct set *ht, int new_size_index)
         entry != old_ht.table + old_ht.size;
         entry++) {
       if (entry_is_present(entry)) {
-         _mesa_set_add(ht, entry->hash, entry->key);
+         set_add(ht, entry->hash, entry->key);
       }
    }
 
@@ -225,8 +247,8 @@ set_rehash(struct set *ht, int new_size_index)
  * Note that insertion may rearrange the table on a resize or rehash,
  * so previously found hash_entries are no longer valid after this function.
  */
-struct set_entry *
-_mesa_set_add(struct set *ht, uint32_t hash, const void *key)
+static struct set_entry *
+set_add(struct set *ht, uint32_t hash, const void *key)
 {
    uint32_t hash_address;
 
@@ -277,6 +299,21 @@ _mesa_set_add(struct set *ht, uint32_t hash, const void *key)
    return NULL;
 }
 
+struct set_entry *
+_mesa_set_add(struct set *set, const void *key)
+{
+   assert(set->key_hash_function);
+   return set_add(set, set->key_hash_function(key), key);
+}
+
+struct set_entry *
+_mesa_set_add_pre_hashed(struct set *set, uint32_t hash, const void *key)
+{
+   assert(set->key_hash_function == NULL ||
+          hash == set->key_hash_function(key));
+   return set_add(set, hash, key);
+}
+
 /**
  * This function deletes the given hash table entry.
  *
diff --git a/src/util/set.h b/src/util/set.h
index 206d0c4d24f..9acd2c28c9f 100644
--- a/src/util/set.h
+++ b/src/util/set.h
@@ -43,6 +43,7 @@ struct set_entry {
 struct set {
    void *mem_ctx;
    struct set_entry *table;
+   uint32_t (*key_hash_function)(const void *key);
    bool (*key_equals_function)(const void *a, const void *b);
    uint32_t size;
    uint32_t rehash;
@@ -54,6 +55,7 @@ struct set {
 
 struct set *
 _mesa_set_create(void *mem_ctx,
+                 uint32_t (*key_hash_function)(const void *key),
                  bool (*key_equals_function)(const void *a,
                                              const void *b));
 void
@@ -61,11 +63,15 @@ _mesa_set_destroy(struct set *set,
                   void (*delete_function)(struct set_entry *entry));
 
 struct set_entry *
-_mesa_set_add(struct set *set, uint32_t hash, const void *key);
+_mesa_set_add(struct set *set, const void *key);
+struct set_entry *
+_mesa_set_add_pre_hashed(struct set *set, uint32_t hash, const void *key);
 
 struct set_entry *
-_mesa_set_search(const struct set *set, uint32_t hash,
-                 const void *key);
+_mesa_set_search(const struct set *set, const void *key);
+struct set_entry *
+_mesa_set_search_pre_hashed(const struct set *set, uint32_t hash,
+                            const void *key);
 
 void
 _mesa_set_remove(struct set *set, struct set_entry *entry);