diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/nir/nir_dominance.c | 160 |
1 files changed, 59 insertions, 101 deletions
diff --git a/src/compiler/nir/nir_dominance.c b/src/compiler/nir/nir_dominance.c index 0abfcd29609..8803be31d88 100644 --- a/src/compiler/nir/nir_dominance.c +++ b/src/compiler/nir/nir_dominance.c @@ -33,16 +33,10 @@ * Harvey, and Kennedy. */ -typedef struct { - nir_function_impl *impl; - bool progress; -} dom_state; - static bool -init_block_cb(nir_block *block, void *_state) +init_block(nir_block *block, nir_function_impl *impl) { - dom_state *state = (dom_state *) _state; - if (block == nir_start_block(state->impl)) + if (block == nir_start_block(impl)) block->imm_dom = block; else block->imm_dom = NULL; @@ -75,12 +69,8 @@ intersect(nir_block *b1, nir_block *b2) } static bool -calc_dominance_cb(nir_block *block, void *_state) +calc_dominance(nir_block *block) { - dom_state *state = (dom_state *) _state; - if (block == nir_start_block(state->impl)) - return true; - nir_block *new_idom = NULL; struct set_entry *entry; set_foreach(block->predecessors, entry) { @@ -96,17 +86,15 @@ calc_dominance_cb(nir_block *block, void *_state) if (block->imm_dom != new_idom) { block->imm_dom = new_idom; - state->progress = true; + return true; } - return true; + return false; } static bool -calc_dom_frontier_cb(nir_block *block, void *state) +calc_dom_frontier(nir_block *block) { - (void) state; - if (block->predecessors->entries > 1) { struct set_entry *entry; set_foreach(block->predecessors, entry) { @@ -137,48 +125,28 @@ calc_dom_frontier_cb(nir_block *block, void *state) * for each node will be the same as it was at the end of step #1. */ -static bool -block_count_children(nir_block *block, void *state) -{ - (void) state; - - if (block->imm_dom) - block->imm_dom->num_dom_children++; - - return true; -} - -static bool -block_alloc_children(nir_block *block, void *state) -{ - void *mem_ctx = state; - - block->dom_children = ralloc_array(mem_ctx, nir_block *, - block->num_dom_children); - block->num_dom_children = 0; - - return true; -} - -static bool -block_add_child(nir_block *block, void *state) -{ - (void) state; - - if (block->imm_dom) - block->imm_dom->dom_children[block->imm_dom->num_dom_children++] = block; - - return true; -} - static void calc_dom_children(nir_function_impl* impl) { void *mem_ctx = ralloc_parent(impl); - nir_foreach_block_call(impl, block_count_children, NULL); - nir_foreach_block_call(impl, block_alloc_children, mem_ctx); - nir_foreach_block_call(impl, block_add_child, NULL); + nir_foreach_block(block, impl) { + if (block->imm_dom) + block->imm_dom->num_dom_children++; + } + + nir_foreach_block(block, impl) { + block->dom_children = ralloc_array(mem_ctx, nir_block *, + block->num_dom_children); + block->num_dom_children = 0; + } + + nir_foreach_block(block, impl) { + if (block->imm_dom) { + block->imm_dom->dom_children[block->imm_dom->num_dom_children++] + = block; + } + } } static void @@ -200,18 +168,23 @@ nir_calc_dominance_impl(nir_function_impl *impl) nir_metadata_require(impl, nir_metadata_block_index); - dom_state state; - state.impl = impl; - state.progress = true; - nir_foreach_block_call(impl, init_block_cb, &state); + nir_foreach_block(block, impl) { + init_block(block, impl); + } - while (state.progress) { - state.progress = false; - nir_foreach_block_call(impl, calc_dominance_cb, &state); + bool progress = true; + while (progress) { + progress = false; + nir_foreach_block(block, impl) { + if (block != nir_start_block(impl)) + progress |= calc_dominance(block); + } } - nir_foreach_block_call(impl, calc_dom_frontier_cb, &state); + nir_foreach_block(block, impl) { + calc_dom_frontier(block); + } nir_block *start_block = nir_start_block(impl); start_block->imm_dom = NULL; @@ -269,20 +242,16 @@ nir_block_dominates(nir_block *parent, nir_block *child) child->dom_post_index <= parent->dom_post_index; } -static bool -dump_block_dom(nir_block *block, void *state) -{ - FILE *fp = state; - if (block->imm_dom) - fprintf(fp, "\t%u -> %u\n", block->imm_dom->index, block->index); - return true; -} - void nir_dump_dom_tree_impl(nir_function_impl *impl, FILE *fp) { fprintf(fp, "digraph doms_%s {\n", impl->function->name); - nir_foreach_block_call(impl, dump_block_dom, fp); + + nir_foreach_block(block, impl) { + if (block->imm_dom) + fprintf(fp, "\t%u -> %u\n", block->imm_dom->index, block->index); + } + fprintf(fp, "}\n\n"); } @@ -295,25 +264,18 @@ nir_dump_dom_tree(nir_shader *shader, FILE *fp) } } -static bool -dump_block_dom_frontier(nir_block *block, void *state) -{ - FILE *fp = state; - - fprintf(fp, "DF(%u) = {", block->index); - struct set_entry *entry; - set_foreach(block->dom_frontier, entry) { - nir_block *df = (nir_block *) entry->key; - fprintf(fp, "%u, ", df->index); - } - fprintf(fp, "}\n"); - return true; -} - void nir_dump_dom_frontier_impl(nir_function_impl *impl, FILE *fp) { - nir_foreach_block_call(impl, dump_block_dom_frontier, fp); + nir_foreach_block(block, impl) { + fprintf(fp, "DF(%u) = {", block->index); + struct set_entry *entry; + set_foreach(block->dom_frontier, entry) { + nir_block *df = (nir_block *) entry->key; + fprintf(fp, "%u, ", df->index); + } + fprintf(fp, "}\n"); + } } void @@ -325,22 +287,18 @@ nir_dump_dom_frontier(nir_shader *shader, FILE *fp) } } -static bool -dump_block_succs(nir_block *block, void *state) -{ - FILE *fp = state; - if (block->successors[0]) - fprintf(fp, "\t%u -> %u\n", block->index, block->successors[0]->index); - if (block->successors[1]) - fprintf(fp, "\t%u -> %u\n", block->index, block->successors[1]->index); - return true; -} - void nir_dump_cfg_impl(nir_function_impl *impl, FILE *fp) { fprintf(fp, "digraph cfg_%s {\n", impl->function->name); - nir_foreach_block_call(impl, dump_block_succs, fp); + + nir_foreach_block(block, impl) { + if (block->successors[0]) + fprintf(fp, "\t%u -> %u\n", block->index, block->successors[0]->index); + if (block->successors[1]) + fprintf(fp, "\t%u -> %u\n", block->index, block->successors[1]->index); + } + fprintf(fp, "}\n\n"); } |