diff --git a/src/compiler/glsl/opt_algebraic.cpp b/src/compiler/glsl/opt_algebraic.cpp
index 21f1409e28d..debc8b6234d 100644
--- a/src/compiler/glsl/opt_algebraic.cpp
+++ b/src/compiler/glsl/opt_algebraic.cpp
@@ -327,32 +327,10 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       }
       break;
 
-   case ir_unop_exp:
-      if (op_expr[0] == NULL)
-	 break;
-
-      if (op_expr[0]->operation == ir_unop_log) {
-         return op_expr[0]->operands[0];
-      }
-      break;
-
-   case ir_unop_log:
-      if (op_expr[0] == NULL)
-	 break;
-
-      if (op_expr[0]->operation == ir_unop_exp) {
-         return op_expr[0]->operands[0];
-      }
-      break;
-
    case ir_unop_exp2:
       if (op_expr[0] == NULL)
 	 break;
 
-      if (op_expr[0]->operation == ir_unop_log2) {
-         return op_expr[0]->operands[0];
-      }
-
       if (op_expr[0]->operation == ir_binop_mul) {
          for (int log2_pos = 0; log2_pos < 2; log2_pos++) {
             ir_expression *log2_expr =
@@ -368,15 +346,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
       }
       break;
 
-   case ir_unop_log2:
-      if (op_expr[0] == NULL)
-	 break;
-
-      if (op_expr[0]->operation == ir_unop_exp2) {
-         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) {