From 766f551cb564233f56f9d80cb79a85a0bf490e8d Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Wed, 22 Feb 2023 11:38:14 -0800
Subject: [PATCH] glsl/opt_algebraic: Drop abs(-x) -> abs(x) and abs(abs(x)) ->
 abs(x).
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NIR does this.  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 | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/src/compiler/glsl/opt_algebraic.cpp b/src/compiler/glsl/opt_algebraic.cpp
index 1bf918b54a4..5145e0724f8 100644
--- a/src/compiler/glsl/opt_algebraic.cpp
+++ b/src/compiler/glsl/opt_algebraic.cpp
@@ -305,19 +305,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       this->mem_ctx = ralloc_parent(ir);
 
    switch (ir->operation) {
-   case ir_unop_abs:
-      if (op_expr[0] == NULL)
-	 break;
-
-      switch (op_expr[0]->operation) {
-      case ir_unop_abs:
-      case ir_unop_neg:
-         return abs(op_expr[0]->operands[0]);
-      default:
-         break;
-      }
-      break;
-
    case ir_unop_neg:
       if (op_expr[0] == NULL)
 	 break;