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nir/tests: add helpers for counting used/unused instructions

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Assisted-by: OpenAI Codex (GPT-5.5)
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41203>
This commit is contained in:
Pavel Ondračka 2026-05-05 20:23:15 +02:00 • committed by Marge Bot
parent 959f59b3f0
commit e517e3da0b
1 changed files with 35 additions and 2 deletions
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37
src/compiler/nir/tests/loop_unroll_tests.cpp
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@ -79,7 +79,16 @@ protected:
glsl_type_singleton_decref();
}
enum instr_count_filter {
instr_count_all,
instr_count_used,
instr_count_unused,
};
int count_instr_common(nir_op op, instr_count_filter filter);
int count_instr(nir_op op);
int count_used_instr(nir_op op);
int count_unused_instr(nir_op op);
int count_loops(void);
nir_builder bld;
@ -88,7 +97,7 @@ protected:
} /* namespace */
int
nir_loop_unroll_test::count_instr(nir_op op)
nir_loop_unroll_test::count_instr_common(nir_op op, instr_count_filter filter)
{
int count = 0;
nir_foreach_block(block, bld.impl) {
@ -96,7 +105,13 @@ nir_loop_unroll_test::count_instr(nir_op op)
if (instr->type != nir_instr_type_alu)
continue;
nir_alu_instr *alu_instr = nir_instr_as_alu(instr);
if (alu_instr->op == op)
if (alu_instr->op != op)
continue;
bool unused = nir_def_is_unused(&alu_instr->def);
if (filter == instr_count_all ||
(filter == instr_count_used && !unused) ||
(filter == instr_count_unused && unused))
count++;
}
}
@ -104,6 +119,24 @@ nir_loop_unroll_test::count_instr(nir_op op)
return count;
}
int
nir_loop_unroll_test::count_instr(nir_op op)
{
return count_instr_common(op, instr_count_all);
}
int
nir_loop_unroll_test::count_used_instr(nir_op op)
{
return count_instr_common(op, instr_count_used);
}
int
nir_loop_unroll_test::count_unused_instr(nir_op op)
{
return count_instr_common(op, instr_count_unused);
}
int
nir_loop_unroll_test::count_loops(void)
{