[Mesa-dev] [PATCH 2/2] i965: Delete linked GLSL IR when using NIR.

[Tapani Pälli]

This is based on Kenneth's patch to delete 'most of the IR'. Due to
linker changes to clone variables, we can now free all of IR.

Saves 58MB of memory when replaying a Dota 2 trace on Broadwell.

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 src/mesa/drivers/dri/i965/brw_shader.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 76285f2..99de1cd 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -297,8 +297,11 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
 
       brw_add_texrect_params(prog);
 
-      if (options->NirOptions)
+      if (options->NirOptions) {
          prog->nir = brw_create_nir(brw, shProg, prog, (gl_shader_stage) stage);
+         ralloc_free(shader->ir);
+         shader->ir = NULL;
+      }
 
       _mesa_reference_program(ctx, &prog, NULL);
    }
-- 
2.1.0