nir/opt_bool: Debug logging

1 files changed, 30 insertions, 0 deletions

diff --git a/src/compiler/nir/nir_opt_minimize_boolean.c b/src/compiler/nir/nir_opt_minimize_boolean.c
index 1366f68d5cc..f7d337961f7 100644
--- a/src/compiler/nir/nir_opt_minimize_boolean.c
+++ b/src/compiler/nir/nir_opt_minimize_boolean.c
@@ -31,6 +31,36 @@
 #define MAX_VARS 8
 #define MAX_TERMS (1u << MAX_VARS)
 
+//#define DUMP_EXPRESSIONS
+#ifdef DUMP_EXPRESSIONS
+static void
+print_logic_expression(const nir_src *src,
+                       const struct boolean_match_state *state)
+{
+   for (unsigned i = 0; i < state->num_variables; i++) {
+      if (state->variables[i].ssa == src->ssa) {
+         printf("    ");
+         nir_print_instr(src->ssa->parent_instr, stdout);
+         printf("\n");
+         return;
+      }
+   }
+
+   const struct nir_instr *const instr = src->ssa->parent_instr;
+
+   if (instr->type == nir_instr_type_alu) {
+      const struct nir_alu_instr *const alu_instr = nir_instr_as_alu(instr);
+
+      for (unsigned i = 0; i < nir_op_infos[alu_instr->op].num_inputs; i++)
+         print_logic_expression(&alu_instr->src[i].src, state);
+   }
+
+   printf("    ");
+   nir_print_instr(instr, stdout);
+   printf("\n");
+}
+#endif
+
 struct implicant {
    union {
       uint8_t *term_ptr;