From 47657b2ffe9587a4b1343ffc91fa663b8ec8db6e Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Wed, 22 Feb 2023 11:39:18 -0800
Subject: [PATCH] glsl/opt_algebraic: Drop -(-x) -> x optimization.
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No change on freedreno shader-db.

Acked-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21475>
---
 src/compiler/glsl/opt_algebraic.cpp | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/src/compiler/glsl/opt_algebraic.cpp b/src/compiler/glsl/opt_algebraic.cpp
index 5145e0724f8..82f817bc193 100644
--- a/src/compiler/glsl/opt_algebraic.cpp
+++ b/src/compiler/glsl/opt_algebraic.cpp
@@ -305,15 +305,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       this->mem_ctx = ralloc_parent(ir);
 
    switch (ir->operation) {
-   case ir_unop_neg:
-      if (op_expr[0] == NULL)
-	 break;
-
-      if (op_expr[0]->operation == ir_unop_neg) {
-         return op_expr[0]->operands[0];
-      }
-      break;
-
    case ir_unop_f2i:
    case ir_unop_f2u:
       if (op_expr[0] && op_expr[0]->operation == ir_unop_trunc) {