treewide: Remove all usage of nir_builder_init with nir_builder_create and nir_builder_at

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24038>

src/amd/common/ac_nir.c

@@ -1080,11 +1080,8 @@ ac_nir_lower_legacy_gs(nir_shader *nir,
 
    nir_function_impl *impl = nir_shader_get_entrypoint(nir);
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_after_cf_list(&impl->body));
    nir_builder *b = &builder;
-   nir_builder_init(b, impl);
-
-   b->cursor = nir_after_cf_list(&impl->body);
 
    /* Emit shader query for mix use legacy/NGG GS */
    bool progress = ac_nir_gs_shader_query(b,

src/amd/common/ac_nir_lower_ngg.c

@@ -2363,9 +2363,8 @@ ac_nir_lower_ngg_nogs(nir_shader *shader, const ac_nir_lower_ngg_options *option
       shader->info.outputs_written |= VARYING_BIT_PRIMITIVE_ID;
    }
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_create(impl);
    nir_builder *b = &builder; /* This is to avoid the & */
-   nir_builder_init(b, impl);
 
    if (options->can_cull) {
       analyze_shader_before_culling(shader, &state);
@@ -3440,10 +3439,8 @@ ac_nir_lower_ngg_gs(nir_shader *shader, const ac_nir_lower_ngg_options *options)
    nir_cf_list extracted;
    nir_cf_extract(&extracted, nir_before_cf_list(&impl->body), nir_after_cf_list(&impl->body));
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_before_cf_list(&impl->body));
    nir_builder *b = &builder; /* This is to avoid the & */
-   nir_builder_init(b, impl);
-   b->cursor = nir_before_cf_list(&impl->body);
 
    /* Workgroup barrier: wait for ES threads */
    nir_scoped_barrier(b, .execution_scope=SCOPE_WORKGROUP, .memory_scope=SCOPE_WORKGROUP,
@@ -4767,10 +4764,8 @@ ac_nir_lower_ngg_ms(nir_shader *shader,
    state.primitive_count_var =
       nir_local_variable_create(impl, glsl_uint_type(), "primitive_count_var");
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_before_cf_list(&impl->body));
    nir_builder *b = &builder; /* This is to avoid the & */
-   nir_builder_init(b, impl);
-   b->cursor = nir_before_cf_list(&impl->body);
 
    handle_smaller_ms_api_workgroup(b, &state);
    ms_emit_legacy_workgroup_index(b, &state);

src/amd/common/ac_nir_lower_ps.c

@@ -853,9 +853,8 @@ ac_nir_lower_ps(nir_shader *nir, const ac_nir_lower_ps_options *options)
 {
    nir_function_impl *impl = nir_shader_get_entrypoint(nir);
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_create(impl);
    nir_builder *b = &builder;
-   nir_builder_init(b, impl);
 
    lower_ps_state state = {
       .options = options,

src/amd/common/ac_nir_lower_tess_io_to_mem.c

@@ -559,10 +559,8 @@ hs_emit_write_tess_factors(nir_shader *shader,
 
    /* We assume there is always a single end block in the shader. */
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_after_block(last_block));
    nir_builder *b = &builder; /* This is to avoid the & */
-   nir_builder_init(b, impl);
-   b->cursor = nir_after_block(last_block);
 
    /* If tess factors are load from LDS, wait previous LDS stores done. */
    if (!st->tcs_pass_tessfactors_by_reg) {

src/compiler/glsl/gl_nir_lower_blend_equation_advanced.c

@@ -495,9 +495,7 @@ gl_nir_lower_blend_equation_advanced(nir_shader *sh, bool coherent)
 
    sh->info.fs.uses_sample_shading = true;
 
-   nir_builder b;
-   nir_builder_init(&b, impl);
-   b.cursor = nir_after_block(nir_impl_last_block(impl));
+   nir_builder b = nir_builder_at(nir_after_block(nir_impl_last_block(impl)));
 
    nir_variable *fb = nir_variable_create(sh, nir_var_shader_out,
                                           glsl_vec4_type(),

src/compiler/nir/nir_opt_preamble.c

@@ -524,10 +524,8 @@ nir_opt_preamble(nir_shader *shader, const nir_opt_preamble_options *options,
       _mesa_pointer_hash_table_create(NULL);
    nir_function_impl *preamble =
       nir_shader_get_preamble(impl->function->shader);
-   nir_builder _b;
-   nir_builder *b = &_b;
-   nir_builder_init(b, preamble);
-   b->cursor = nir_before_cf_list(&preamble->body);
+   nir_builder preamble_builder = nir_builder_at(nir_before_cf_list(&preamble->body));
+   nir_builder *b = &preamble_builder;
 
    nir_foreach_block (block, impl) {
       nir_foreach_instr (instr, block) {
@@ -570,7 +568,8 @@ nir_opt_preamble(nir_shader *shader, const nir_opt_preamble_options *options,
       }
    }
 
-   nir_builder_init(b, impl);
+   nir_builder builder = nir_builder_create(impl);
+   b = &builder;
 
    nir_foreach_block (block, impl) {
       nir_foreach_instr_safe (instr, block) {

src/freedreno/ir3/ir3_nir_analyze_ubo_ranges.c

@@ -350,9 +350,8 @@ copy_ubo_to_uniform(nir_shader *nir, const struct ir3_const_state *const_state)
       return false;
 
    nir_function_impl *preamble = nir_shader_get_preamble(nir);
-   nir_builder _b, *b = &_b;
-   nir_builder_init(b, preamble);
-   b->cursor = nir_after_cf_list(&preamble->body);
+   nir_builder _b = nir_builder_at(nir_after_cf_list(&preamble->body));
+   nir_builder *b = &_b;
 
    for (unsigned i = 0; i < state->num_enabled; i++) {
       const struct ir3_ubo_range *range = &state->range[i];

src/freedreno/ir3/ir3_nir_opt_preamble.c

@@ -310,9 +310,8 @@ ir3_nir_lower_preamble(nir_shader *nir, struct ir3_shader_variant *v)
    BITSET_DECLARE(promoted_to_float, preamble_size);
    memset(promoted_to_float, 0, sizeof(promoted_to_float));
 
-   nir_builder _b;
-   nir_builder *b = &_b;
-   nir_builder_init(b, main);
+   nir_builder builder_main = nir_builder_create(main);
+   nir_builder *b = &builder_main;
 
    nir_foreach_block (block, main) {
       nir_foreach_instr_safe (instr, block) {
@@ -350,7 +349,8 @@ ir3_nir_lower_preamble(nir_shader *nir, struct ir3_shader_variant *v)
       }
    }
 
-   nir_builder_init(b, preamble);
+   nir_builder builder_preamble = nir_builder_create(preamble);
+   b = &builder_preamble;
 
    nir_foreach_block (block, preamble) {
       nir_foreach_instr_safe (instr, block) {

src/gallium/auxiliary/nir/nir_draw_helpers.c

@@ -104,9 +104,7 @@ static void
 nir_lower_pstipple_impl(nir_function_impl *impl,
                         lower_pstipple *state)
 {
-   nir_builder *b = &state->b;
-
-   nir_builder_init(b, impl);
+   state->b = nir_builder_create(impl);
 
    nir_block *start = nir_start_block(impl);
    nir_lower_pstipple_block(start, state);
@@ -313,13 +311,10 @@ static void
 nir_lower_aapoint_impl(nir_function_impl *impl, lower_aapoint *state,
                        nir_alu_type bool_type)
 {
-   nir_builder *b = &state->b;
-
-   nir_builder_init(b, impl);
-
    nir_block *block = nir_start_block(impl);
-   b->cursor = nir_before_block(block);
+   state->b = nir_builder_at(nir_before_block(block));
 
+   nir_builder *b = &state->b;
    nir_ssa_def *aainput = nir_load_var(b, state->input);
 
    nir_ssa_def *dist = nir_fadd(b, nir_fmul(b, nir_channel(b, aainput, 0), nir_channel(b, aainput, 0)),

src/gallium/drivers/r600/sfn/sfn_nir_lower_tess_io.cpp

@@ -530,12 +530,11 @@ r600_append_tcs_TF_emission(nir_shader *shader, enum mesa_prim prim_type)
          }
       }
    }
-   nir_builder builder;
-   nir_builder *b = &builder;
 
    assert(exec_list_length(&shader->functions) == 1);
    nir_function *f = (nir_function *)shader->functions.get_head();
-   nir_builder_init(b, f->impl);
+   nir_builder builder = nir_builder_create(f->impl);
+   nir_builder *b = &builder;
 
    auto outer_comps = outer_tf_components(prim_type);
    if (!outer_comps)

src/gallium/drivers/radeonsi/si_shader.c

@@ -1931,11 +1931,8 @@ static void si_nir_lower_ps_color_input(nir_shader *nir, struct si_shader *shade
 {
    nir_function_impl *impl = nir_shader_get_entrypoint(nir);
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_before_cf_list(&impl->body));
    nir_builder *b = &builder;
-   nir_builder_init(b, impl);
-
-   b->cursor = nir_before_cf_list(&impl->body);
 
    const struct si_shader_selector *sel = shader->selector;
    const union si_shader_key *key = &shader->key;
@@ -2015,11 +2012,8 @@ static void si_nir_emit_polygon_stipple(nir_shader *nir, struct si_shader_args *
 {
    nir_function_impl *impl = nir_shader_get_entrypoint(nir);
 
-   nir_builder builder;
+   nir_builder builder = nir_builder_at(nir_before_cf_list(&impl->body));
    nir_builder *b = &builder;
-   nir_builder_init(b, impl);
-
-   b->cursor = nir_before_cf_list(&impl->body);
 
    /* Load the buffer descriptor. */
    nir_ssa_def *desc =

src/intel/compiler/brw_kernel.c

@@ -56,12 +56,11 @@ load_clc_shader(struct brw_compiler *compiler, struct disk_cache *disk_cache,
    }
 }
 
-static void
-builder_init_new_impl(nir_builder *b, nir_function *func)
+static nir_builder
+builder_init_new_impl(nir_function *func)
 {
    nir_function_impl *impl = nir_function_impl_create(func);
-   nir_builder_init(b, impl);
-   b->cursor = nir_before_cf_list(&impl->body);
+   return nir_builder_at(nir_before_cf_list(&impl->body));
 }
 
 static void
@@ -69,9 +68,7 @@ implement_atomic_builtin(nir_function *func, nir_atomic_op atomic_op,
                          enum glsl_base_type data_base_type,
                          nir_variable_mode mode)
 {
-   nir_builder b;
-   builder_init_new_impl(&b, func);
-
+   nir_builder b = builder_init_new_impl(func);
    const struct glsl_type *data_type = glsl_scalar_type(data_base_type);
 
    unsigned p = 0;
@@ -103,9 +100,7 @@ implement_atomic_builtin(nir_function *func, nir_atomic_op atomic_op,
 static void
 implement_sub_group_ballot_builtin(nir_function *func)
 {
-   nir_builder b;
-   builder_init_new_impl(&b, func);
-
+   nir_builder b = builder_init_new_impl(func);
    nir_deref_instr *ret =
       nir_build_deref_cast(&b, nir_load_param(&b, 0),
                            nir_var_function_temp, glsl_uint_type(), 0);

src/intel/vulkan/anv_nir_compute_push_layout.c

@@ -144,8 +144,8 @@ anv_nir_compute_push_layout(nir_shader *nir,
 
    if (has_push_intrinsic) {
       nir_foreach_function_impl(impl, nir) {
-         nir_builder build, *b = &build;
-         nir_builder_init(b, impl);
+         nir_builder build = nir_builder_create(impl);
+         nir_builder *b = &build;
 
          nir_foreach_block(block, impl) {
             nir_foreach_instr_safe(instr, block) {