From: Brian Paul <brianp@vmware.com>
Date: Wed, 17 Jun 2009 19:51:35 +0000 (-0600)
Subject: glsl: don't unroll loops containing continue/break
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4bc74a07561eeaa97dbde55c384998ea6aa5968c;p=mesa.git

glsl: don't unroll loops containing continue/break

Just search the AST in _slang_can_unroll_for_loop().
---

diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index f19da41b0d6..f6274780ad6 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -2488,6 +2488,12 @@ _slang_can_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper)
    assert(oper->type == SLANG_OPER_FOR);
    assert(oper->num_children == 4);
 
+   if (_slang_find_node_type((slang_operation *) oper, SLANG_OPER_CONTINUE) ||
+       _slang_find_node_type((slang_operation *) oper, SLANG_OPER_BREAK)) {
+      /* dont't unroll loops containing continue/break statements */
+      return GL_FALSE;
+   }
+
    /* children[0] must be either "int i=constant" or "i=constant" */
    if (oper->children[0].type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) {
       slang_variable *var;