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Add some coarse debug information to semantics. (#2382)

Browse Source 
Example stack:

```
1.	node_stack_:
	0.	FunctionDefinitionStart
	1.	ReturnStatement -> node1
2.	node_block_stack_:
	0.	block0
	1.	block1
```

Example trace output:

```
*** SemanticsParseTreeHandler::Build Begin ***
Push 0: FunctionIntroducer
Push 1: DeclaredName
Push 2: ParameterListEnd
Pop 2: ParameterListEnd
Push 2: ParameterList
Pop 2: ParameterList
Pop 0: FunctionIntroducer
AddNode block0: FunctionDeclaration()
AddNode block0: BindName(ident0, node0)
AddNode block0: FunctionDefinition(node0, block1)
Push 0: FunctionDefinitionStart
Push 1: Literal -> IntegerLiteral
AddNode block1: IntegerLiteral(int0): node_xref1
Push 2: StatementEnd
Pop 2: StatementEnd
Pop 1: any (Literal) -> node0
Push 1: ReturnStatement -> ReturnExpression
AddNode block1: ReturnExpression(node0)
Pop 0: FunctionDefinitionStart
Push 0: FunctionDefinition
*** SemanticsParseTreeHandler::Build End ***
cross_reference_irs.size == 2,
cross_references = {
  node_xref0 = "xref(ir0, block0, node0)";
  node_xref1 = "xref(ir0, block0, node1)";
},
identifiers = {
  ident0 = "Foo";
},
integer_literals = {
  int0 = 0;
},
node_blocks = {
  block0 = {
    node0 = FunctionDeclaration();
    node1 = BindName(ident0, node0);
    node2 = FunctionDefinition(node0, block1);
  },
  block1 = {
    node0 = IntegerLiteral(int0): node_xref1;
    node1 = ReturnExpression(node0);
  },
}
```

Co-authored-by: Chandler Carruth <chandlerc@gmail.com>
This commit is contained in:
Jon Ross-Perkins
2022-11-11 14:10:13 -08:00
committed by GitHub
co-authored by Chandler Carruth
parent 25d1b62df0
commit 352fec1885
16 changed files with 275 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/driver/driver.cpp
+7 -3
View File
@@ -40,7 +40,11 @@ auto Driver::RunFullCommand(llvm::ArrayRef<llvm::StringRef> args) -> bool {
DiagnosticConsumer* consumer = &ConsoleDiagnosticConsumer();
std::unique_ptr<SortingDiagnosticConsumer> sorting_consumer;
// TODO: Figure out a command-line support library, this is temporary.
if (!args.empty() && args[0] == "--print-errors=streamed") {
if (!args.empty() && args[0] == "-v") {
args = args.drop_front();
// Note this implies streamed output in order to interleave.
vlog_stream_ = &error_stream_;
} else if (!args.empty() && args[0] == "--print-errors=streamed") {
args = args.drop_front();
} else {
sorting_consumer = std::make_unique<SortingDiagnosticConsumer>(*consumer);
@@ -170,8 +174,8 @@ auto Driver::RunDumpSubcommand(DiagnosticConsumer& consumer,
}
const SemanticsIR builtin_ir = SemanticsIR::MakeBuiltinIR();
const SemanticsIR semantics_ir =
SemanticsIR::MakeFromParseTree(builtin_ir, tokenized_source, parse_tree);
const SemanticsIR semantics_ir = SemanticsIR::MakeFromParseTree(
builtin_ir, tokenized_source, parse_tree, vlog_stream_);
if (dump_mode == DumpMode::SemanticsIR) {
consumer.Flush();
semantics_ir.Print(output_stream_);