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llvm: free llvm data before running llvm optimizations

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This reduces the max memory usage.
This commit is contained in:
Jacob Young 2024-02-25 16:04:59 +01:00
parent 1e1598950a
commit ed026b5dff
2 changed files with 50 additions and 4 deletions
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10
src/codegen/llvm.zig
View File

@ -1183,6 +1183,10 @@ pub const Object = struct {
}
}
const target_triple_sentinel =
try self.gpa.dupeZ(u8, self.builder.target_triple.slice(&self.builder).?);
defer self.gpa.free(target_triple_sentinel);
const emit_asm_msg = options.asm_path orelse "(none)";
const emit_bin_msg = options.bin_path orelse "(none)";
const post_llvm_ir_msg = options.post_ir_path orelse "(none)";
@ -1202,6 +1206,7 @@ pub const Object = struct {
const bitcode = try self.builder.toBitcode(self.gpa);
defer self.gpa.free(bitcode);
self.builder.clearAndFree();
if (options.pre_bc_path) |path| {
var file = try std.fs.cwd().createFile(path, .{});
@ -1249,16 +1254,13 @@ pub const Object = struct {
};
defer context.dispose();
const target_triple_sentinel =
try self.gpa.dupeZ(u8, self.builder.target_triple.slice(&self.builder).?);
defer self.gpa.free(target_triple_sentinel);
var target: *llvm.Target = undefined;
var error_message: [*:0]const u8 = undefined;
if (llvm.Target.getFromTriple(target_triple_sentinel, &target, &error_message).toBool()) {
defer llvm.disposeMessage(error_message);
log.err("LLVM failed to parse '{s}': {s}", .{
self.builder.target_triple.slice(&self.builder).?,
target_triple_sentinel,
error_message,
});
@panic("Invalid LLVM triple");

44
src/codegen/llvm/Builder.zig
View File

@ -8396,6 +8396,50 @@ pub fn init(options: Options) Allocator.Error!Builder {
return self;
}
pub fn clearAndFree(self: *Builder) void {
self.module_asm.clearAndFree(self.gpa);
self.string_map.clearAndFree(self.gpa);
self.string_indices.clearAndFree(self.gpa);
self.string_bytes.clearAndFree(self.gpa);
self.types.clearAndFree(self.gpa);
self.next_unique_type_id.clearAndFree(self.gpa);
self.type_map.clearAndFree(self.gpa);
self.type_items.clearAndFree(self.gpa);
self.type_extra.clearAndFree(self.gpa);
self.attributes.clearAndFree(self.gpa);
self.attributes_map.clearAndFree(self.gpa);
self.attributes_indices.clearAndFree(self.gpa);
self.attributes_extra.clearAndFree(self.gpa);
self.function_attributes_set.clearAndFree(self.gpa);
self.globals.clearAndFree(self.gpa);
self.next_unique_global_id.clearAndFree(self.gpa);
self.aliases.clearAndFree(self.gpa);
self.variables.clearAndFree(self.gpa);
for (self.functions.items) |*function| function.deinit(self.gpa);
self.functions.clearAndFree(self.gpa);
self.constant_map.clearAndFree(self.gpa);
self.constant_items.shrinkAndFree(self.gpa, 0);
self.constant_extra.clearAndFree(self.gpa);
self.constant_limbs.clearAndFree(self.gpa);
self.metadata_map.clearAndFree(self.gpa);
self.metadata_items.shrinkAndFree(self.gpa, 0);
self.metadata_extra.clearAndFree(self.gpa);
self.metadata_limbs.clearAndFree(self.gpa);
self.metadata_forward_references.clearAndFree(self.gpa);
self.metadata_named.clearAndFree(self.gpa);
self.metadata_string_map.clearAndFree(self.gpa);
self.metadata_string_indices.clearAndFree(self.gpa);
self.metadata_string_bytes.clearAndFree(self.gpa);
}
pub fn deinit(self: *Builder) void {
self.module_asm.deinit(self.gpa);