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Add support for code model selection

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This commit is contained in:
Valentin Anger
2020-01-29 13:22:11 +01:00
committed by Andrew Kelley
parent 59bc1d2721
commit d448c3d38a
5 changed files with 105 additions and 1 deletions
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53
src/codegen.cpp
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@@ -8365,6 +8365,25 @@ static bool detect_err_ret_tracing(CodeGen *g) {
g->build_mode != BuildModeSmallRelease;
}
static LLVMCodeModel to_llvm_code_model(CodeGen *g) {
switch (g->code_model) {
case CodeModelDefault:
return LLVMCodeModelDefault;
case CodeModelTiny:
return LLVMCodeModelTiny;
case CodeModelSmall:
return LLVMCodeModelSmall;
case CodeModelKernel:
return LLVMCodeModelKernel;
case CodeModelMedium:
return LLVMCodeModelMedium;
case CodeModelLarge:
return LLVMCodeModelLarge;
}
zig_unreachable();
}
Buf *codegen_generate_builtin_source(CodeGen *g) {
g->have_dynamic_link = detect_dynamic_link(g);
g->have_pic = detect_pic(g);
@@ -8544,6 +8563,34 @@ Buf *codegen_generate_builtin_source(CodeGen *g) {
buf_appendf(contents, "pub const position_independent_code = %s;\n", bool_to_str(g->have_pic));
buf_appendf(contents, "pub const strip_debug_info = %s;\n", bool_to_str(g->strip_debug_symbols));
{
const char *code_model;
switch (g->code_model) {
case CodeModelDefault:
code_model = "default";
break;
case CodeModelTiny:
code_model = "tiny";
break;
case CodeModelSmall:
code_model = "small";
break;
case CodeModelKernel:
code_model = "kernel";
break;
case CodeModelMedium:
code_model = "medium";
break;
case CodeModelLarge:
code_model = "large";
break;
default:
zig_unreachable();
}
buf_appendf(contents, "pub const code_model = CodeModel.%s;\n", code_model);
}
{
TargetSubsystem detected_subsystem = detect_subsystem(g);
if (detected_subsystem != TargetSubsystemAuto) {
@@ -8588,6 +8635,7 @@ static Error define_builtin_compile_vars(CodeGen *g) {
cache_bool(&cache_hash, g->is_dynamic);
cache_bool(&cache_hash, g->is_test_build);
cache_bool(&cache_hash, g->is_single_threaded);
cache_int(&cache_hash, g->code_model);
cache_int(&cache_hash, g->zig_target->is_native);
cache_int(&cache_hash, g->zig_target->arch);
cache_int(&cache_hash, g->zig_target->sub_arch);
@@ -8745,7 +8793,7 @@ static void init(CodeGen *g) {
g->target_machine = ZigLLVMCreateTargetMachine(target_ref, buf_ptr(&g->llvm_triple_str),
target_specific_cpu_args, target_specific_features, opt_level, reloc_mode,
LLVMCodeModelDefault, g->function_sections);
to_llvm_code_model(g), g->function_sections);
g->target_data_ref = LLVMCreateTargetDataLayout(g->target_machine);
@@ -9527,6 +9575,8 @@ Error create_c_object_cache(CodeGen *g, CacheHash **out_cache_hash, bool verbose
cache_bool(cache_hash, g->have_sanitize_c);
cache_bool(cache_hash, want_valgrind_support(g));
cache_bool(cache_hash, g->function_sections);
cache_int(cache_hash, g->code_model);
for (size_t arg_i = 0; arg_i < g->clang_argv_len; arg_i += 1) {
cache_str(cache_hash, g->clang_argv[arg_i]);
}
@@ -10696,6 +10746,7 @@ CodeGen *codegen_create(Buf *main_pkg_path, Buf *root_src_path, const ZigTarget
g->one_possible_values.init(32);
g->is_test_build = is_test_build;
g->is_single_threaded = false;
g->code_model = CodeModelDefault;
buf_resize(&g->global_asm, 0);
for (size_t i = 0; i < array_length(symbols_that_llvm_depends_on); i += 1) {