diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_nir.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_nir.c b/src/mesa/drivers/dri/i965/brw_nir.c index 7826729db85..7896f29803b 100644 --- a/src/mesa/drivers/dri/i965/brw_nir.c +++ b/src/mesa/drivers/dri/i965/brw_nir.c @@ -171,11 +171,26 @@ brw_nir_lower_outputs(nir_shader *nir, bool is_scalar) } } -#define _OPT(do_pass) (({ \ - bool this_progress = true; \ - do_pass \ - nir_validate_shader(nir); \ - this_progress; \ +static bool +should_clone_nir() +{ + static int should_clone = -1; + if (should_clone < 1) + should_clone = brw_env_var_as_boolean("NIR_TEST_CLONE", false); + + return should_clone; +} + +#define _OPT(do_pass) (({ \ + bool this_progress = true; \ + do_pass \ + nir_validate_shader(nir); \ + if (should_clone_nir()) { \ + nir_shader *clone = nir_shader_clone(ralloc_parent(nir), nir); \ + ralloc_free(nir); \ + nir = clone; \ + } \ + this_progress; \ })) #define OPT(pass, ...) _OPT( \ @@ -191,7 +206,7 @@ brw_nir_lower_outputs(nir_shader *nir, bool is_scalar) pass(nir, ##__VA_ARGS__); \ ) -static void +static nir_shader * nir_optimize(nir_shader *nir, bool is_scalar) { bool progress; @@ -219,6 +234,8 @@ nir_optimize(nir_shader *nir, bool is_scalar) OPT(nir_opt_remove_phis); OPT(nir_opt_undef); } while (progress); + + return nir; } nir_shader * @@ -260,13 +277,13 @@ brw_create_nir(struct brw_context *brw, OPT(nir_split_var_copies); - nir_optimize(nir, is_scalar); + nir = nir_optimize(nir, is_scalar); /* Lower a bunch of stuff */ OPT_V(nir_lower_var_copies); /* Get rid of split copies */ - nir_optimize(nir, is_scalar); + nir = nir_optimize(nir, is_scalar); OPT_V(brw_nir_lower_inputs, devinfo, is_scalar); OPT_V(brw_nir_lower_outputs, is_scalar); @@ -287,7 +304,7 @@ brw_create_nir(struct brw_context *brw, OPT_V(nir_lower_atomics, shader_prog); } - nir_optimize(nir, is_scalar); + nir = nir_optimize(nir, is_scalar); if (brw->gen >= 6) { /* Try and fuse multiply-adds */ |