From: Eric Anholt <eric@anholt.net>
Date: Fri, 26 Mar 2010 19:16:54 +0000 (-0700)
Subject: Add support for ast_to_hir of pre inc/dec.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=76ea56c007263ec3b79234e7b775e3a7b519a54a;p=mesa.git

Add support for ast_to_hir of pre inc/dec.
---

diff --git a/ast_to_hir.cpp b/ast_to_hir.cpp
index f8ca3710340..67fed4cc893 100644
--- a/ast_to_hir.cpp
+++ b/ast_to_hir.cpp
@@ -656,7 +656,26 @@ ast_expression::hir(exec_list *instructions,
    case ast_conditional:
 
    case ast_pre_inc:
-   case ast_pre_dec:
+   case ast_pre_dec: {
+      op[0] = this->subexpressions[0]->hir(instructions, state);
+      if (op[0]->type->base_type == GLSL_TYPE_FLOAT)
+	 op[1] = new ir_constant(1.0f);
+      else
+	 op[1] = new ir_constant(1);
+
+      type = arithmetic_result_type(op[0]->type, op[1]->type,
+				    false, state);
+
+      struct ir_rvalue *temp_rhs;
+      temp_rhs = new ir_expression(operations[this->oper], type,
+				   op[0], op[1]);
+
+      result = do_assignment(instructions, state, op[0], temp_rhs,
+			     this->subexpressions[0]->get_location());
+      type = result->type;
+      error_emitted = op[0]->type->is_error();
+      break;
+   }
 
    case ast_post_inc:
    case ast_post_dec: {