From: Thomas Helland <thomashelland90@gmail.com>
Date: Tue, 16 Aug 2016 20:10:28 +0000 (+0200)
Subject: glsl: Convert if lowering to use a set
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5482d31b86ce0d80db74643dda3cba394f966403;p=mesa.git

glsl: Convert if lowering to use a set

Also do some minor whitespace cleanups

Signed-off-by: Thomas Helland <thomashelland90@gmail.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
---

diff --git a/src/compiler/glsl/lower_if_to_cond_assign.cpp b/src/compiler/glsl/lower_if_to_cond_assign.cpp
index 6a7034794b2..a948466128d 100644
--- a/src/compiler/glsl/lower_if_to_cond_assign.cpp
+++ b/src/compiler/glsl/lower_if_to_cond_assign.cpp
@@ -47,7 +47,8 @@
 
 #include "compiler/glsl_types.h"
 #include "ir.h"
-#include "program/hash_table.h"
+#include "util/set.h"
+#include "util/hash_table.h" /* Needed for the hashing functions */
 
 namespace {
 
@@ -59,13 +60,14 @@ public:
       this->max_depth = max_depth;
       this->depth = 0;
 
-      this->condition_variables = hash_table_ctor(0, hash_table_pointer_hash,
-						  hash_table_pointer_compare);
+      this->condition_variables =
+            _mesa_set_create(NULL, _mesa_hash_pointer,
+                                    _mesa_key_pointer_equal);
    }
 
    ~ir_if_to_cond_assign_visitor()
    {
-      hash_table_dtor(this->condition_variables);
+      _mesa_set_destroy(this->condition_variables, NULL);
    }
 
    ir_visitor_status visit_enter(ir_if *);
@@ -75,7 +77,7 @@ public:
    unsigned max_depth;
    unsigned depth;
 
-   struct hash_table *condition_variables;
+   struct set *condition_variables;
 };
 
 } /* anonymous namespace */
@@ -114,38 +116,39 @@ void
 move_block_to_cond_assign(void *mem_ctx,
 			  ir_if *if_ir, ir_rvalue *cond_expr,
 			  exec_list *instructions,
-			  struct hash_table *ht)
+			  struct set *set)
 {
    foreach_in_list_safe(ir_instruction, ir, instructions) {
       if (ir->ir_type == ir_type_assignment) {
 	 ir_assignment *assign = (ir_assignment *)ir;
 
-	 if (hash_table_find(ht, assign) == NULL) {
-	    hash_table_insert(ht, assign, assign);
+	 if (_mesa_set_search(set, assign) == NULL) {
+	    _mesa_set_add(set, assign);
 
 	    /* If the LHS of the assignment is a condition variable that was
 	     * previously added, insert an additional assignment of false to
 	     * the variable.
 	     */
 	    const bool assign_to_cv =
-	       hash_table_find(ht, assign->lhs->variable_referenced()) != NULL;
+	          _mesa_set_search(
+	                set, assign->lhs->variable_referenced()) != NULL;
 
 	    if (!assign->condition) {
-	       if (assign_to_cv) {
-		  assign->rhs =
-		     new(mem_ctx) ir_expression(ir_binop_logic_and,
-						glsl_type::bool_type,
-						cond_expr->clone(mem_ctx, NULL),
-						assign->rhs);
-	       } else {
-		  assign->condition = cond_expr->clone(mem_ctx, NULL);
+          if (assign_to_cv) {
+             assign->rhs =
+		          new(mem_ctx) ir_expression(ir_binop_logic_and,
+                                           glsl_type::bool_type,
+                                           cond_expr->clone(mem_ctx, NULL),
+                                           assign->rhs);
+          } else {
+             assign->condition = cond_expr->clone(mem_ctx, NULL);
 	       }
 	    } else {
 	       assign->condition =
-		  new(mem_ctx) ir_expression(ir_binop_logic_and,
-					     glsl_type::bool_type,
-					     cond_expr->clone(mem_ctx, NULL),
-					     assign->condition);
+             new(mem_ctx) ir_expression(ir_binop_logic_and,
+                                        glsl_type::bool_type,
+                                        cond_expr->clone(mem_ctx, NULL),
+                                        assign->condition);
 	    }
 	 }
       }
@@ -210,7 +213,7 @@ ir_if_to_cond_assign_visitor::visit_leave(ir_if *ir)
    /* Add the new condition variable to the hash table.  This allows us to
     * find this variable when lowering other (enclosing) if-statements.
     */
-   hash_table_insert(this->condition_variables, then_var, then_var);
+   _mesa_set_add(this->condition_variables, then_var);
 
    /* If there are instructions in the else-clause, store the inverse of the
     * condition to a variable.  Move all of the instructions from the
@@ -241,7 +244,7 @@ ir_if_to_cond_assign_visitor::visit_leave(ir_if *ir)
       /* Add the new condition variable to the hash table.  This allows us to
        * find this variable when lowering other (enclosing) if-statements.
        */
-      hash_table_insert(this->condition_variables, else_var, else_var);
+      _mesa_set_add(this->condition_variables, else_var);
    }
 
    ir->remove();