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Improve support for generating LLVM IR/asm files

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This commit is contained in:
Noam Preil 2020-02-09 19:52:50 -05:00 committed by Andrew Kelley
parent cbc4e59e68
commit 2502cb242a
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GPG Key ID: 7C5F548F728501A9
5 changed files with 122 additions and 109 deletions
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10
lib/std/build.zig
View File

@ -1155,6 +1155,9 @@ pub const LibExeObjStep = struct {
frameworks: BufSet,
verbose_link: bool,
verbose_cc: bool,
produce_ir: bool,
produce_asm: bool,
produce_bin: bool,
disable_gen_h: bool,
bundle_compiler_rt: bool,
disable_stack_probing: bool,
@ -1285,6 +1288,9 @@ pub const LibExeObjStep = struct {
.builder = builder,
.verbose_link = false,
.verbose_cc = false,
.produce_ir = false,
.produce_asm = false,
.produce_bin = true,
.build_mode = builtin.Mode.Debug,
.is_dynamic = is_dynamic,
.kind = kind,
@ -1941,6 +1947,10 @@ pub const LibExeObjStep = struct {
if (builder.verbose_link or self.verbose_link) zig_args.append("--verbose-link") catch unreachable;
if (builder.verbose_cc or self.verbose_cc) zig_args.append("--verbose-cc") catch unreachable;
try zig_args.append(if (self.produce_ir) "-femit-llvm-ir" else "-fno-emit-llvm-ir");
try zig_args.append(if (self.produce_asm) "-femit-asm" else "-fno-emit-asm");
try zig_args.append(if (self.produce_bin) "-femit-bin" else "-fno-emit-bin");
if (self.strip) {
try zig_args.append("--strip");
}

9
src/all_types.hpp
View File

@ -1966,12 +1966,6 @@ enum CodeModel {
CodeModelLarge,
};
enum EmitFileType {
EmitFileTypeBinary,
EmitFileTypeAssembly,
EmitFileTypeLLVMIr,
};
struct LinkLib {
Buf *name;
Buf *path;
@ -2204,6 +2198,8 @@ struct CodeGen {
bool verbose_cimport;
bool verbose_cc;
bool verbose_llvm_cpu_features;
bool emit_asm;
bool emit_llvm_ir;
bool error_during_imports;
bool generate_error_name_table;
bool enable_cache; // mutually exclusive with output_dir
@ -2236,7 +2232,6 @@ struct CodeGen {
size_t version_patch;
const char *linker_script;
EmitFileType emit_file_type;
BuildMode build_mode;
OutType out_type;
const ZigTarget *zig_target;

173
src/codegen.cpp
View File

@ -121,10 +121,6 @@ void codegen_set_lib_version(CodeGen *g, size_t major, size_t minor, size_t patc
g->version_patch = patch;
}
void codegen_set_emit_file_type(CodeGen *g, EmitFileType emit_file_type) {
g->emit_file_type = emit_file_type;
}
void codegen_set_each_lib_rpath(CodeGen *g, bool each_lib_rpath) {
g->each_lib_rpath = each_lib_rpath;
}
@ -7919,6 +7915,14 @@ static void do_code_gen(CodeGen *g) {
}
}
void codegen_set_emit_asm(CodeGen *g, bool emit) {
g->emit_asm = emit;
}
void codegen_set_emit_llvm_ir(CodeGen *g, bool emit) {
g->emit_llvm_ir = emit;
}
static void zig_llvm_emit_output(CodeGen *g) {
g->pass1_arena->destruct(&heap::c_allocator);
g->pass1_arena = nullptr;
@ -7927,48 +7931,40 @@ static void zig_llvm_emit_output(CodeGen *g) {
Buf *output_path = &g->o_file_output_path;
char *err_msg = nullptr;
switch (g->emit_file_type) {
case EmitFileTypeBinary:
if (g->disable_bin_generation)
return;
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitBinary, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write object file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
g->link_objects.append(output_path);
if (g->bundle_compiler_rt && (g->out_type == OutTypeObj ||
(g->out_type == OutTypeLib && !g->is_dynamic)))
{
zig_link_add_compiler_rt(g, g->sub_progress_node);
}
break;
case EmitFileTypeAssembly:
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitAssembly, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write assembly file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
break;
case EmitFileTypeLLVMIr:
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitLLVMIr, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write llvm-ir file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
break;
default:
zig_unreachable();
if (!g->disable_bin_generation) {
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitBinary, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write object file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
g->link_objects.append(output_path);
if (g->bundle_compiler_rt && (g->out_type == OutTypeObj ||
(g->out_type == OutTypeLib && !g->is_dynamic)))
{
zig_link_add_compiler_rt(g, g->sub_progress_node);
}
}
if (g->emit_asm) {
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitAssembly, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write assembly file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
}
if (g->emit_llvm_ir) {
if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
ZigLLVM_EmitLLVMIr, &err_msg, g->build_mode == BuildModeDebug, is_small,
g->enable_time_report))
{
zig_panic("unable to write llvm-ir file %s: %s", buf_ptr(output_path), err_msg);
}
validate_inline_fns(g);
}
LLVMDisposeModule(g->module);
g->module = nullptr;
LLVMDisposeTargetData(g->target_data_ref);
@ -10497,53 +10493,48 @@ static void resolve_out_paths(CodeGen *g) {
Buf *out_basename = buf_create_from_buf(g->root_out_name);
Buf *o_basename = buf_create_from_buf(g->root_out_name);
switch (g->emit_file_type) {
case EmitFileTypeBinary: {
switch (g->out_type) {
case OutTypeUnknown:
zig_unreachable();
case OutTypeObj:
if (g->enable_cache && g->link_objects.length == 1 && !need_llvm_module(g)) {
buf_init_from_buf(&g->output_file_path, g->link_objects.at(0));
return;
}
if (need_llvm_module(g) && g->link_objects.length != 0 && !g->enable_cache &&
buf_eql_buf(o_basename, out_basename))
{
// make it not collide with main output object
buf_append_str(o_basename, ".root");
}
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_append_str(out_basename, target_o_file_ext(g->zig_target));
break;
case OutTypeExe:
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_append_str(out_basename, target_exe_file_ext(g->zig_target));
break;
case OutTypeLib:
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_resize(out_basename, 0);
buf_append_str(out_basename, target_lib_file_prefix(g->zig_target));
buf_append_buf(out_basename, g->root_out_name);
buf_append_str(out_basename, target_lib_file_ext(g->zig_target, !g->is_dynamic,
g->version_major, g->version_minor, g->version_patch));
break;
}
break;
}
case EmitFileTypeAssembly: {
const char *asm_ext = target_asm_file_ext(g->zig_target);
buf_append_str(o_basename, asm_ext);
buf_append_str(out_basename, asm_ext);
break;
}
case EmitFileTypeLLVMIr: {
const char *llvm_ir_ext = target_llvm_ir_file_ext(g->zig_target);
buf_append_str(o_basename, llvm_ir_ext);
buf_append_str(out_basename, llvm_ir_ext);
break;
if (!g->disable_bin_generation) {
switch (g->out_type) {
case OutTypeUnknown:
zig_unreachable();
case OutTypeObj:
if (g->enable_cache && g->link_objects.length == 1 && !need_llvm_module(g)) {
buf_init_from_buf(&g->output_file_path, g->link_objects.at(0));
return;
}
if (need_llvm_module(g) && g->link_objects.length != 0 && !g->enable_cache &&
buf_eql_buf(o_basename, out_basename))
{
// make it not collide with main output object
buf_append_str(o_basename, ".root");
}
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_append_str(out_basename, target_o_file_ext(g->zig_target));
break;
case OutTypeExe:
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_append_str(out_basename, target_exe_file_ext(g->zig_target));
break;
case OutTypeLib:
buf_append_str(o_basename, target_o_file_ext(g->zig_target));
buf_resize(out_basename, 0);
buf_append_str(out_basename, target_lib_file_prefix(g->zig_target));
buf_append_buf(out_basename, g->root_out_name);
buf_append_str(out_basename, target_lib_file_ext(g->zig_target, !g->is_dynamic,
g->version_major, g->version_minor, g->version_patch));
break;
}
}
else if (g->emit_asm) {
const char *asm_ext = target_asm_file_ext(g->zig_target);
buf_append_str(o_basename, asm_ext);
buf_append_str(out_basename, asm_ext);
}
else if (g->emit_llvm_ir) {
const char *llvm_ir_ext = target_llvm_ir_file_ext(g->zig_target);
buf_append_str(o_basename, llvm_ir_ext);
buf_append_str(out_basename, llvm_ir_ext);
}
os_path_join(g->output_dir, o_basename, &g->o_file_output_path);
os_path_join(g->output_dir, out_basename, &g->output_file_path);
@ -10708,7 +10699,7 @@ void codegen_build_and_link(CodeGen *g) {
// If there is more than one object, we have to link them (with -r).
// Finally, if we didn't make an object from zig source, and we don't have caching enabled,
// then we have an object from C source that we must copy to the output dir which we do with a -r link.
if (!g->disable_bin_generation && g->emit_file_type == EmitFileTypeBinary &&
if (!g->disable_bin_generation &&
(g->out_type != OutTypeObj || g->link_objects.length > 1 ||
(!need_llvm_module(g) && !g->enable_cache)))
{

4
src/codegen.hpp
View File

@ -26,7 +26,9 @@ void codegen_set_clang_argv(CodeGen *codegen, const char **args, size_t len);
void codegen_set_llvm_argv(CodeGen *codegen, const char **args, size_t len);
void codegen_set_each_lib_rpath(CodeGen *codegen, bool each_lib_rpath);
void codegen_set_emit_file_type(CodeGen *g, EmitFileType emit_file_type);
void codegen_set_emit_asm(CodeGen *codegen, bool emit);
void codegen_set_emit_llvm_ir(CodeGen *codegen, bool emit);
void codegen_set_strip(CodeGen *codegen, bool strip);
void codegen_set_errmsg_color(CodeGen *codegen, ErrColor err_color);
void codegen_set_out_name(CodeGen *codegen, Buf *out_name);

35
src/main.cpp
View File

@ -376,7 +376,6 @@ static int main0(int argc, char **argv) {
}
Cmd cmd = CmdNone;
EmitFileType emit_file_type = EmitFileTypeBinary;
const char *in_file = nullptr;
Buf *output_dir = nullptr;
bool strip = false;
@ -425,6 +424,8 @@ static int main0(int argc, char **argv) {
bool enable_dump_analysis = false;
bool enable_doc_generation = false;
bool disable_bin_generation = false;
bool emit_asm = false;
bool emit_llvm_ir = false;
const char *cache_dir = nullptr;
CliPkg *cur_pkg = heap::c_allocator.create<CliPkg>();
BuildMode build_mode = BuildModeDebug;
@ -701,6 +702,18 @@ static int main0(int argc, char **argv) {
function_sections = true;
} else if (strcmp(arg, "--test-evented-io") == 0) {
test_evented_io = true;
} else if (strcmp(arg, "-femit-bin") == 0) {
disable_bin_generation = false;
} else if (strcmp(arg, "-fno-emit-bin") == 0) {
disable_bin_generation = true;
} else if (strcmp(arg, "-femit-asm") == 0) {
emit_asm = true;
} else if (strcmp(arg, "-fno-emit-asm") == 0) {
emit_asm = false;
} else if (strcmp(arg, "-femit-llvm-ir") == 0) {
emit_llvm_ir = true;
} else if (strcmp(arg, "-fno-emit-llvm-ir") == 0) {
emit_llvm_ir = false;
} else if (i + 1 >= argc) {
fprintf(stderr, "Expected another argument after %s\n", arg);
return print_error_usage(arg0);
@ -732,11 +745,11 @@ static int main0(int argc, char **argv) {
}
} else if (strcmp(arg, "--emit") == 0) {
if (strcmp(argv[i], "asm") == 0) {
emit_file_type = EmitFileTypeAssembly;
emit_asm = true;
} else if (strcmp(argv[i], "bin") == 0) {
emit_file_type = EmitFileTypeBinary;
disable_bin_generation = false;
} else if (strcmp(argv[i], "llvm-ir") == 0) {
emit_file_type = EmitFileTypeLLVMIr;
emit_llvm_ir = true;
} else {
fprintf(stderr, "--emit options are 'asm', 'bin', or 'llvm-ir'\n");
return print_error_usage(arg0);
@ -1026,8 +1039,8 @@ static int main0(int argc, char **argv) {
return print_error_usage(arg0);
}
if (emit_file_type != EmitFileTypeBinary && in_file == nullptr) {
fprintf(stderr, "A root source file is required when using `--emit asm` or `--emit llvm-ir`\n");
if ((emit_asm || emit_llvm_ir) && in_file == nullptr) {
fprintf(stderr, "A root source file is required when using `-femit-asm` or `-femit-llvm-ir`\n");
return print_error_usage(arg0);
}
@ -1098,7 +1111,7 @@ static int main0(int argc, char **argv) {
{
fprintf(stderr, "Expected source file argument.\n");
return print_error_usage(arg0);
} else if (cmd == CmdRun && emit_file_type != EmitFileTypeBinary) {
} else if (cmd == CmdRun && disable_bin_generation) {
fprintf(stderr, "Cannot run non-executable file.\n");
return print_error_usage(arg0);
}
@ -1262,7 +1275,8 @@ static int main0(int argc, char **argv) {
if (cmd == CmdBuild || cmd == CmdRun) {
codegen_set_emit_file_type(g, emit_file_type);
codegen_set_emit_asm(g, emit_asm);
codegen_set_emit_llvm_ir(g, emit_llvm_ir);
g->enable_cache = get_cache_opt(enable_cache, cmd == CmdRun);
codegen_build_and_link(g);
@ -1330,7 +1344,8 @@ static int main0(int argc, char **argv) {
codegen_print_timing_report(g, stderr);
return main_exit(root_progress_node, EXIT_SUCCESS);
} else if (cmd == CmdTest) {
codegen_set_emit_file_type(g, emit_file_type);
codegen_set_emit_asm(g, emit_asm);
codegen_set_emit_llvm_ir(g, emit_llvm_ir);
ZigTarget native;
get_native_target(&native);
@ -1359,7 +1374,7 @@ static int main0(int argc, char **argv) {
Buf *test_exe_path = buf_alloc();
*test_exe_path = os_path_resolve(&test_exe_path_unresolved, 1);
if (emit_file_type != EmitFileTypeBinary) {
if (disable_bin_generation) {
fprintf(stderr, "Created %s but skipping execution because it is non executable.\n",
buf_ptr(test_exe_path));
return main_exit(root_progress_node, EXIT_SUCCESS);