From c6908fc8acd31db91b5cb40383ce6d6d49bb0a9a Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Wed, 22 Feb 2023 12:00:24 -0800
Subject: [PATCH] glsl/opt_algebraic: Drop fdiv(1,x) -> frcp(x) and fdiv(x,1)
 -> x optimizations.
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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 | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/src/compiler/glsl/opt_algebraic.cpp b/src/compiler/glsl/opt_algebraic.cpp
index 1be726d26c5..e6c127d5a3c 100644
--- a/src/compiler/glsl/opt_algebraic.cpp
+++ b/src/compiler/glsl/opt_algebraic.cpp
@@ -473,18 +473,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       }
       break;
 
-   case ir_binop_div:
-      if (is_vec_one(op_const[0]) && (
-                ir->type->is_float() || ir->type->is_double())) {
-	 return new(mem_ctx) ir_expression(ir_unop_rcp,
-					   ir->operands[1]->type,
-					   ir->operands[1],
-					   NULL);
-      }
-      if (is_vec_one(op_const[1]))
-	 return ir->operands[0];
-      break;
-
    case ir_binop_dot:
       if (is_vec_zero(op_const[0]) || is_vec_zero(op_const[1]))
 	 return ir_constant::zero(mem_ctx, ir->type);