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LLVM: Emit bitcode even if libllvm is not present

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antlilja 2023-08-13 16:11:33 +02:00
parent 049cad4411
commit d3055480ec
1 changed files with 20 additions and 1 deletions
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21
src/codegen/llvm.zig
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@ -1238,7 +1238,26 @@ pub const Object = struct {
if (options.asm_path == null and options.bin_path == null and
options.post_ir_path == null and options.post_bc_path == null) return;
if (!self.builder.useLibLlvm()) unreachable; // caught in Compilation.Config.resolve
if (options.post_bc_path) |path| {
if (!self.builder.useLibLlvm()) {
var arena_allocator = std.heap.ArenaAllocator.init(self.gpa);
defer arena_allocator.deinit();
const arena = arena_allocator.allocator();
var file = try std.fs.cwd().createFileZ(path, .{});
defer file.close();
const bitcode = try self.builder.toBitcode(arena);
const ptr: [*]const u8 = @ptrCast(bitcode.ptr);
try file.writeAll(ptr[0..(bitcode.len * 4)]);
return;
}
}
if (!self.builder.useLibLlvm()) {
log.err("emitting without libllvm not implemented", .{});
return error.FailedToEmit;
}
// Unfortunately, LLVM shits the bed when we ask for both binary and assembly.
// So we call the entire pipeline multiple times if this is requested.