nir/validate: Print when the validation failed

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_program.c b/src/mesa/drivers/dri/i965/brw_program.c
index f5ebd3c3b05..96247f32f0f 100644
--- a/src/mesa/drivers/dri/i965/brw_program.c
+++ b/src/mesa/drivers/dri/i965/brw_program.c
@@ -91,14 +91,15 @@ brw_create_nir(struct brw_context *brw,
 
       nir_remove_dead_variables(nir, nir_var_shader_in | nir_var_shader_out);
       nir_lower_returns(nir);
-      nir_validate_shader(nir);
+      nir_validate_shader(nir, "after glsl_to_nir or spirv_to_nir and "
+                               "return lowering");
       NIR_PASS_V(nir, nir_lower_io_to_temporaries,
                  nir_shader_get_entrypoint(nir), true, false);
    } else {
       nir = prog_to_nir(prog, options);
       NIR_PASS_V(nir, nir_lower_regs_to_ssa); /* turn registers into SSA */
    }
-   nir_validate_shader(nir);
+   nir_validate_shader(nir, "before brw_preprocess_nir");
 
    nir = brw_preprocess_nir(brw->screen->compiler, nir);