From c30d5eefc96925b4bef781806c7a0114eca1b8e0 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Thu, 26 Jun 2014 09:30:29 +0200
Subject: Opdated to openssl-1.0.1h xkeyboard-config fontconfig libX11 libxcb
 xcb-proto mesa xserver git update 26 June 2014

xserver          commit a3b44ad8db1fa2f3b81c1ff9498f31c5323edd37
libxcb           commit 125135452a554e89e49448e2c1ee6658324e1095
libxcb/xcb-proto commit 84bfd909bc3774a459b11614cfebeaa584a1eb38
xkeyboard-config commit 39a226707b133ab5540c2d30176cb3857e74dcca
libX11           commit a4679baaa18142576d42d423afe816447f08336c
fontconfig       commit 274f2181f294af2eff3e8db106ec8d7bab2d3ff1
mesa             commit 9a8acafa47558cafeb37f80f4b30061ac1962c69
---
 mesalib/src/glsl/opt_algebraic.cpp | 59 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 3 deletions(-)

(limited to 'mesalib/src/glsl/opt_algebraic.cpp')

diff --git a/mesalib/src/glsl/opt_algebraic.cpp b/mesalib/src/glsl/opt_algebraic.cpp
index 9d5539252..ac7514acf 100644
--- a/mesalib/src/glsl/opt_algebraic.cpp
+++ b/mesalib/src/glsl/opt_algebraic.cpp
@@ -45,7 +45,9 @@ namespace {
 
 class ir_algebraic_visitor : public ir_rvalue_visitor {
 public:
-   ir_algebraic_visitor(bool native_integers)
+   ir_algebraic_visitor(bool native_integers,
+                        const struct gl_shader_compiler_options *options)
+      : options(options)
    {
       this->progress = false;
       this->mem_ctx = NULL;
@@ -69,6 +71,7 @@ public:
    ir_rvalue *swizzle_if_required(ir_expression *expr,
 				  ir_rvalue *operand);
 
+   const struct gl_shader_compiler_options *options;
    void *mem_ctx;
 
    bool native_integers;
@@ -116,6 +119,46 @@ update_type(ir_expression *ir)
       ir->type = ir->operands[1]->type;
 }
 
+/* Recognize (v.x + v.y) + (v.z + v.w) as dot(v, 1.0) */
+static ir_expression *
+try_replace_with_dot(ir_expression *expr0, ir_expression *expr1, void *mem_ctx)
+{
+   if (expr0 && expr0->operation == ir_binop_add &&
+       expr0->type->is_float() &&
+       expr1 && expr1->operation == ir_binop_add &&
+       expr1->type->is_float()) {
+      ir_swizzle *x = expr0->operands[0]->as_swizzle();
+      ir_swizzle *y = expr0->operands[1]->as_swizzle();
+      ir_swizzle *z = expr1->operands[0]->as_swizzle();
+      ir_swizzle *w = expr1->operands[1]->as_swizzle();
+
+      if (!x || x->mask.num_components != 1 ||
+          !y || y->mask.num_components != 1 ||
+          !z || z->mask.num_components != 1 ||
+          !w || w->mask.num_components != 1) {
+         return NULL;
+      }
+
+      bool swiz_seen[4] = {false, false, false, false};
+      swiz_seen[x->mask.x] = true;
+      swiz_seen[y->mask.x] = true;
+      swiz_seen[z->mask.x] = true;
+      swiz_seen[w->mask.x] = true;
+
+      if (!swiz_seen[0] || !swiz_seen[1] ||
+          !swiz_seen[2] || !swiz_seen[3]) {
+         return NULL;
+      }
+
+      if (x->val->equals(y->val) &&
+          x->val->equals(z->val) &&
+          x->val->equals(w->val)) {
+         return dot(x->val, new(mem_ctx) ir_constant(1.0f, 4));
+      }
+   }
+   return NULL;
+}
+
 void
 ir_algebraic_visitor::reassociate_operands(ir_expression *ir1,
 					   int op1,
@@ -329,6 +372,14 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       if (op_const[1] && !op_const[0])
 	 reassociate_constant(ir, 1, op_const[1], op_expr[0]);
 
+      /* Recognize (v.x + v.y) + (v.z + v.w) as dot(v, 1.0) */
+      if (options->OptimizeForAOS) {
+         ir_expression *expr = try_replace_with_dot(op_expr[0], op_expr[1],
+                                                    mem_ctx);
+         if (expr)
+            return expr;
+      }
+
       /* Replace (-x + y) * a + x and commutative variations with lrp(x, y, a).
        *
        * (-x + y) * a + x
@@ -380,6 +431,7 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
             }
          }
       }
+
       break;
 
    case ir_binop_sub:
@@ -647,9 +699,10 @@ ir_algebraic_visitor::handle_rvalue(ir_rvalue **rvalue)
 }
 
 bool
-do_algebraic(exec_list *instructions, bool native_integers)
+do_algebraic(exec_list *instructions, bool native_integers,
+             const struct gl_shader_compiler_options *options)
 {
-   ir_algebraic_visitor v(native_integers);
+   ir_algebraic_visitor v(native_integers, options);
 
    visit_list_elements(&v, instructions);
 
-- 
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