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precompile and cache Carbon prelude (#7432)

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Refactors the link driver to automatically compile and cache the carbon
prelude for use in linking.

Implements a `carbon_library` rule for compiling the Core library
dependencies in the examples.
This commit is contained in:
Lucile Rose Nihlen
2026-07-16 18:02:14 +00:00
committed by GitHub
parent 90f6654b48
commit 625f2ca629
63 changed files with 1454 additions and 634 deletions
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toolchain/driver/compile_options.cpp
+32 -7
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@@ -14,8 +14,8 @@ namespace {
// Provides command-line options common to both `compile` and `link`
// subcommands.
auto BuildSharedOptions(CommandLine::CommandBuilder& b, CompileOptions* options)
-> void {
auto BuildSharedOptions(CommandLine::CommandBuilder& b, CompileOptions* options,
CodegenOptions* cg_options) -> void {
b.AddStringPositionalArg(
{
.name = "FILE",
@@ -82,7 +82,8 @@ Selects the amount of optimization to perform.
// Include the common code generation options at this point to render it
// after the more common options above, but before the more unusual options
// below.
options->codegen_options->Build(b);
cg_options->Build(b);
options->codegen_options = cg_options;
b.AddFlag(
{
@@ -121,9 +122,10 @@ Whether to use the implicit prelude import. Enabled by default.
} // namespace
auto CompileOptions::BuildForCompileSubcommand(CommandLine::CommandBuilder& b)
auto CompileOptions::BuildForCompileSubcommand(CommandLine::CommandBuilder& b,
CodegenOptions* cg_options)
-> void {
BuildSharedOptions(b, this);
BuildSharedOptions(b, this, cg_options);
b.AddOneOfOption(
{
@@ -386,11 +388,34 @@ Use the string form of the fingerprint from mangling instead of the hash form.
)""",
},
[&](auto& arg_b) { arg_b.Set(&mangle_string_fingerprint); });
b.AddFlag(
{
.name = "include-carbon-core",
.help = R"""(
Automatically include the Core libraries files in the compilation.
Note this refers to the Core libraries files other than the prelude, the
inclusion of which is currently controlled by the `prelude_import` flag. If
the `prelude_import` flag is set to false, this is also silently set to false.
)""",
},
[&](auto& arg_b) {
arg_b.Default(true);
arg_b.Set(&include_carbon_core);
});
}
auto CompileOptions::BuildForBuildSubcommand(CommandLine::CommandBuilder& b)
auto CompileOptions::BuildForBuildSubcommand(CommandLine::CommandBuilder& b,
CodegenOptions* cg_options)
-> void {
BuildSharedOptions(b, this);
include_carbon_core = true;
BuildSharedOptions(b, this, cg_options);
}
auto CompileOptions::FixupFlags() -> void {
if (!prelude_import) {
include_carbon_core = false;
}
}
auto CompileOptions::ValidatePhase(Diagnostics::NoLocEmitter& emitter) const