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Implement BundleStore (#7173)

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See
[here](https://docs.google.com/document/d/1eWW8MTko3PIqxZ32-GhsdaRSYqoDicxMB1VeessMTOg/edit?tab=t.0#heading=h.igl2myxbaf58)
for the background and design. The only usage of `BundleStore` in this
PR is artificial, but I'm working on a PR involving an action inst with
3 arguments, which requires something like `BundleStore`.
This commit is contained in:
Geoff Romer
2026-05-07 19:42:23 +00:00
committed by GitHub
parent 6776e2b804
commit 031ec0a140
31 changed files with 865 additions and 28 deletions
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toolchain/check/pattern_match.cpp
+8 -5
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@@ -767,8 +767,10 @@ auto MatchContext::DoPreWork(State state, SemIR::SpliceInst splice,
context_, SemIR::LocId(entry.pattern_id),
context_.types().GetTypeInstId(splice.type_id),
{.type_id = SemIR::InstType::TypeId,
.pattern_id = entry.pattern_id,
.parent_index = callee_state->index.Allocate()});
.args_id =
context_.bundles().Add<SemIR::CalleePatternMatchAction::Args>(
{.pattern_id = entry.pattern_id,
.parent_index = callee_state->index.Allocate()})});
callee_state->call_param_patterns.push_back(entry.pattern_id);
callee_state->call_params.push_back(result_id);
results_stack_.AppendToTop(result_id);
@@ -976,15 +978,16 @@ auto ThunkPatternMatch(Context& context, SemIR::InstId self_pattern_id,
auto PerformAction(Context& context, SemIR::LocId /*loc_id*/,
SemIR::CalleePatternMatchAction action) -> SemIR::InstId {
CalleeState state = {.index = IndexSource(action.parent_index)};
auto args = context.bundles().Get(action.args_id);
CalleeState state = {.index = IndexSource(args.parent_index)};
MatchContext match(context);
auto result_id = match.MatchWithResult(
&state,
{.pattern_id = action.pattern_id,
{.pattern_id = args.pattern_id,
.work = MatchContext::PreWork{.scrutinee_id = SemIR::InstId::None},
.allow_unmarked_ref = true});
CARBON_CHECK(state.index.Peek().index <= action.parent_index.index + 1,
CARBON_CHECK(state.index.Peek().index <= args.parent_index.index + 1,
"TODO: add support for composite forms");
return result_id;
}