lima/gp: Clean up lima_program_optimize_vs_nir() a little

Remove an unnecessary nir_lower_regs_to_ssa as that should be done by
the state tracker, and add a missing DCE pass after running copy
propagation in order to remove the dead copies. This shouldn't fix
anything but the second part will reduce shader sizes.

Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>

diff --git a/src/gallium/drivers/lima/lima_program.c b/src/gallium/drivers/lima/lima_program.c
index 61889d02ddf3de04804afcde58988b471a0d7e63..c99b8cbf14ea4191aabe0f29d111f2f543ae158e 100644 (file)
--- a/src/gallium/drivers/lima/lima_program.c
+++ b/src/gallium/drivers/lima/lima_program.c
@@ -94,7 +94,6 @@ lima_program_optimize_vs_nir(struct nir_shader *s)
 
    NIR_PASS_V(s, nir_lower_viewport_transform);
    NIR_PASS_V(s, nir_lower_io, nir_var_all, type_size, 0);
-   NIR_PASS_V(s, nir_lower_regs_to_ssa);
    NIR_PASS_V(s, nir_lower_load_const_to_scalar);
    NIR_PASS_V(s, lima_nir_lower_uniform_to_scalar);
    NIR_PASS_V(s, nir_lower_io_to_scalar,
@@ -124,6 +123,7 @@ lima_program_optimize_vs_nir(struct nir_shader *s)
    NIR_PASS_V(s, nir_lower_int_to_float);
    NIR_PASS_V(s, nir_lower_bool_to_float);
    NIR_PASS_V(s, nir_copy_prop);
+   NIR_PASS_V(s, nir_opt_dce);
    NIR_PASS_V(s, nir_lower_locals_to_regs);
    NIR_PASS_V(s, nir_convert_from_ssa, true);
    NIR_PASS_V(s, nir_remove_dead_variables, nir_var_function_temp);