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-rw-r--r--src/mesa/drivers/dri/i965/brw_shader.cpp12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 4ef38829beb..54d6d71cc7a 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -144,6 +144,11 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
_mesa_copy_linked_program_data((gl_shader_stage) stage, shProg, prog);
+ /* Temporary memory context for any new IR. */
+ void *mem_ctx = ralloc_context(NULL);
+
+ ralloc_adopt(mem_ctx, shader->base.ir);
+
bool progress;
/* lower_packing_builtins() inserts arithmetic instructions, so it
@@ -250,6 +255,13 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
_mesa_reference_program(ctx, &prog, NULL);
+ /* Now that we've finished altering the linked IR, reparent any live IR back
+ * to the permanent memory context, and free the temporary one (discarding any
+ * junk we optimized away).
+ */
+ reparent_ir(shader->base.ir, shader->base.ir);
+ ralloc_free(mem_ctx);
+
if (ctx->_Shader->Flags & GLSL_DUMP) {
fprintf(stderr, "\n");
fprintf(stderr, "GLSL IR for linked %s program %d:\n",