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@(linkage=<string>) for procedures and variables; @(require) for procedures; package runtime linkage improvements; Subsequence improvements to lb_run_remove_unused_function_pass

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This commit is contained in:
gingerBill
2021-11-04 12:40:50 +00:00
parent 3fa7dabaa8
commit 6ded538546
15 changed files with 138 additions and 56 deletions
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32
src/llvm_backend_opt.cpp
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@@ -357,14 +357,14 @@ void lb_run_function_pass_manager(LLVMPassManagerRef fpm, lbProcedure *p) {
}
void lb_run_remove_unused_function_pass(LLVMModuleRef mod) {
void lb_run_remove_unused_function_pass(lbModule *m) {
isize removal_count = 0;
isize pass_count = 0;
isize const max_pass_count = 10;
// Custom remove dead function pass
for (; pass_count < max_pass_count; pass_count++) {
bool was_dead_function = false;
for (LLVMValueRef func = LLVMGetFirstFunction(mod);
for (LLVMValueRef func = LLVMGetFirstFunction(m->mod);
func != nullptr;
/**/
) {
@@ -382,30 +382,20 @@ void lb_run_remove_unused_function_pass(LLVMModuleRef mod) {
// Ignore for the time being
continue;
}
if (name == "memset" ||
name == "memmove" ||
name == "memcpy") {
LLVMLinkage linkage = LLVMGetLinkage(curr_func);
if (linkage != LLVMInternalLinkage) {
continue;
}
if (is_arch_wasm()) {
if (name == "__ashlti3") {
LLVMSetLinkage(curr_func, LLVMExternalLinkage);
Entity **found = map_get(&m->procedure_values, hash_pointer(curr_func));
if (found && *found) {
Entity *e = *found;
bool is_required = (e->flags & EntityFlag_Require) == EntityFlag_Require;
if (is_required) {
continue;
}
}
LLVMLinkage linkage = LLVMGetLinkage(curr_func);
switch (linkage) {
case LLVMExternalLinkage:
case LLVMDLLImportLinkage:
case LLVMDLLExportLinkage:
default:
continue;
case LLVMInternalLinkage:
break;
}
LLVMDeleteFunction(curr_func);
was_dead_function = true;
removal_count += 1;