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nir/search: Add debugging code to dump the pattern matched 

This was useful while debugging the previous commit.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Connor Abbott 2019-02-18 17:28:32 +01:00
parent 7ce86e6938
commit 6ec4ed48fc
1 changed files with 75 additions and 0 deletions
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75
src/compiler/nir/nir_search.c
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@ -530,6 +530,73 @@ construct_value(nir_builder *build,
}
}
MAYBE_UNUSED static void dump_value(const nir_search_value *val)
{
switch (val->type) {
case nir_search_value_constant: {
const nir_search_constant *sconst = nir_search_value_as_constant(val);
switch (sconst->type) {
case nir_type_float:
printf("%f", sconst->data.d);
break;
case nir_type_int:
printf("%"PRId64, sconst->data.i);
break;
case nir_type_uint:
printf("0x%"PRIx64, sconst->data.u);
break;
default:
unreachable("bad const type");
}
break;
}
case nir_search_value_variable: {
const nir_search_variable *var = nir_search_value_as_variable(val);
if (var->is_constant)
printf("#");
printf("%c", var->variable + 'a');
break;
}
case nir_search_value_expression: {
const nir_search_expression *expr = nir_search_value_as_expression(val);
printf("(");
if (expr->inexact)
printf("~");
switch (expr->opcode) {
#define CASE(n) \
case nir_search_op_##n: printf(#n); break;
CASE(f2b)
CASE(b2f)
CASE(b2i)
CASE(i2b)
CASE(i2i)
CASE(f2i)
CASE(i2f)
#undef CASE
default:
printf("%s", nir_op_infos[expr->opcode].name);
}
unsigned num_srcs = 1;
if (expr->opcode <= nir_last_opcode)
num_srcs = nir_op_infos[expr->opcode].num_inputs;
for (unsigned i = 0; i < num_srcs; i++) {
printf(" ");
dump_value(expr->srcs[i]);
}
printf(")");
break;
}
}
if (val->bit_size > 0)
printf("@%d", val->bit_size);
}
nir_ssa_def *
nir_replace_instr(nir_builder *build, nir_alu_instr *instr,
const nir_search_expression *search,
@ -567,6 +634,14 @@ nir_replace_instr(nir_builder *build, nir_alu_instr *instr,
if (!found)
return NULL;
#if 0
printf("matched: ");
dump_value(&search->value);
printf(" -> ");
dump_value(replace);
printf(" ssa_%d\n", instr->dest.dest.ssa.index);
#endif
build->cursor = nir_before_instr(&instr->instr);
nir_alu_src val = construct_value(build, replace,