From 116f1d4f95d8eb0a82b272016590549632c865b3 Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Fri, 25 Jun 2010 14:10:01 -0700
Subject: glsl2: Steal the live IR and free the rest of the junk.

---
 src/glsl/main.cpp              | 11 +++++++++++
 src/mesa/shader/ir_to_mesa.cpp | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/glsl/main.cpp b/src/glsl/main.cpp
index 1ed22e1f33..8b2eeaa13a 100644
--- a/src/glsl/main.cpp
+++ b/src/glsl/main.cpp
@@ -99,6 +99,12 @@ const struct option compiler_opts[] = {
    { NULL, 0, NULL, 0 }
 };
 
+static void
+steal_memory(ir_instruction *ir, void *new_ctx)
+{
+   talloc_steal(new_ctx, ir);
+}
+
 void
 compile_shader(struct gl_shader *shader)
 {
@@ -187,6 +193,11 @@ compile_shader(struct gl_shader *shader)
 
    shader->InfoLog = state->info_log;
 
+   /* Retain any live IR, but trash the rest. */
+   foreach_list(node, shader->ir) {
+      visit_tree((ir_instruction *) node, steal_memory, shader);
+   }
+
    talloc_free(state);
 
    return;
diff --git a/src/mesa/shader/ir_to_mesa.cpp b/src/mesa/shader/ir_to_mesa.cpp
index 75021a70fd..c3de3aae05 100644
--- a/src/mesa/shader/ir_to_mesa.cpp
+++ b/src/mesa/shader/ir_to_mesa.cpp
@@ -1650,6 +1650,12 @@ get_mesa_program(GLcontext *ctx, void *mem_ctx, struct gl_shader *shader)
 
 extern "C" {
 
+static void
+steal_memory(ir_instruction *ir, void *new_ctx)
+{
+   talloc_steal(new_ctx, ir);
+}
+
 void
 _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader)
 {
@@ -1712,6 +1718,11 @@ _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader)
    shader->CompileStatus = !state->error;
    shader->InfoLog = state->info_log;
 
+   /* Retain any live IR, but trash the rest. */
+   foreach_list(node, shader->ir) {
+      visit_tree((ir_instruction *) node, steal_memory, shader);
+   }
+
    talloc_free(state);
  }
 
-- 
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