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More improvements to minimize code gen size

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This commit is contained in:
gingerBill
2025-09-18 20:58:24 +01:00
parent 4b0a07ba27
commit 9cf69576ab
7 changed files with 60 additions and 21 deletions
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39
src/llvm_backend.cpp
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@@ -8,7 +8,11 @@
#endif
#ifndef LLVM_IGNORE_VERIFICATION
#define LLVM_IGNORE_VERIFICATION 0
#define LLVM_IGNORE_VERIFICATION build_context.internal_ignore_llvm_verification
#endif
#ifndef LLVM_WEAK_MONOMORPHIZATION
#define LLVM_WEAK_MONOMORPHIZATION build_context.internal_weak_monomorphization
#endif
@@ -620,6 +624,7 @@ gb_internal lbValue lb_hasher_proc_for_type(lbModule *m, Type *type) {
#define LLVM_SET_VALUE_NAME(value, name) LLVMSetValueName2((value), (name), gb_count_of((name))-1);
gb_internal lbValue lb_map_get_proc_for_type(lbModule *m, Type *type) {
GB_ASSERT(!build_context.dynamic_map_calls);
type = base_type(type);
@@ -634,6 +639,9 @@ gb_internal lbValue lb_map_get_proc_for_type(lbModule *m, Type *type) {
lbProcedure *p = lb_create_dummy_procedure(m, proc_name, t_map_get_proc);
string_map_set(&m->gen_procs, proc_name, p);
p->internal_gen_type = type;
lb_begin_procedure_body(p);
defer (lb_end_procedure_body(p));
@@ -1891,6 +1899,10 @@ gb_internal void lb_verify_function(lbModule *m, lbProcedure *p, bool dump_ll=fa
}
gb_internal WORKER_TASK_PROC(lb_llvm_module_verification_worker_proc) {
if (LLVM_IGNORE_VERIFICATION) {
return 0;
}
char *llvm_error = nullptr;
defer (LLVMDisposeMessage(llvm_error));
lbModule *m = cast(lbModule *)data;
@@ -2298,6 +2310,14 @@ gb_internal WORKER_TASK_PROC(lb_llvm_function_pass_per_module) {
}
void lb_remove_unused_functions_and_globals(lbGenerator *gen) {
for (auto &entry : gen->modules) {
lbModule *m = entry.value;
lb_run_remove_unused_function_pass(m);
lb_run_remove_unused_globals_pass(m);
}
}
struct lbLLVMModulePassWorkerData {
lbModule *m;
LLVMTargetMachineRef target_machine;
@@ -2307,9 +2327,6 @@ struct lbLLVMModulePassWorkerData {
gb_internal WORKER_TASK_PROC(lb_llvm_module_pass_worker_proc) {
auto wd = cast(lbLLVMModulePassWorkerData *)data;
lb_run_remove_unused_function_pass(wd->m);
lb_run_remove_unused_globals_pass(wd->m);
LLVMPassManagerRef module_pass_manager = LLVMCreatePassManager();
lb_populate_module_pass_manager(wd->target_machine, module_pass_manager, build_context.optimization_level);
LLVMRunPassManager(module_pass_manager, wd->m->mod);
@@ -2386,6 +2403,10 @@ gb_internal WORKER_TASK_PROC(lb_llvm_module_pass_worker_proc) {
}
#endif
if (LLVM_IGNORE_VERIFICATION) {
return 0;
}
if (wd->do_threading) {
thread_pool_add_task(lb_llvm_module_verification_worker_proc, wd->m);
} else {
@@ -3464,12 +3485,14 @@ gb_internal bool lb_generate_code(lbGenerator *gen) {
TIME_SECTION("LLVM Function Pass");
lb_llvm_function_passes(gen, do_threading && !build_context.ODIN_DEBUG);
TIME_SECTION("LLVM Remove Unused Functions and Globals");
lb_remove_unused_functions_and_globals(gen);
TIME_SECTION("LLVM Module Pass and Verification");
lb_llvm_module_passes_and_verification(gen, do_threading);
if (gen->module_verification_failed.load(std::memory_order_relaxed)) {
return false;
}
TIME_SECTION("LLVM Correct Entity Linkage");
lb_correct_entity_linkage(gen);
llvm_error = nullptr;
defer (LLVMDisposeMessage(llvm_error));
@@ -3497,8 +3520,6 @@ gb_internal bool lb_generate_code(lbGenerator *gen) {
}
}
TIME_SECTION("LLVM Correct Entity Linkage");
lb_correct_entity_linkage(gen);
////////////////////////////////////////////
for (auto const &entry: gen->modules) {