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Improve wasm-import semantics to allow procedures from different import paths

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This commit is contained in:
gingerBill
2021-11-02 12:54:23 +00:00
parent a4b68b93f2
commit c5cd97dd89
5 changed files with 66 additions and 30 deletions
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src/llvm_backend_utility.cpp
+33
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@@ -1770,3 +1770,36 @@ LLVMValueRef llvm_get_inline_asm(LLVMTypeRef func_type, String const &str, Strin
#endif
);
}
void lb_set_wasm_import_attributes(LLVMValueRef value, Entity *entity, String import_name) {
if (!is_arch_wasm()) {
return;
}
String module_name = str_lit("env");
if (entity->Procedure.foreign_library != nullptr) {
Entity *foreign_library = entity->Procedure.foreign_library;
GB_ASSERT(foreign_library->kind == Entity_LibraryName);
GB_ASSERT(foreign_library->LibraryName.paths.count == 1);
module_name = foreign_library->LibraryName.paths[0];
if (string_starts_with(import_name, module_name)) {
import_name = substring(import_name, module_name.len+WASM_MODULE_NAME_SEPARATOR.len, import_name.len);
}
}
LLVMAddTargetDependentFunctionAttr(value, "wasm-import-module", alloc_cstring(permanent_allocator(), module_name));
LLVMAddTargetDependentFunctionAttr(value, "wasm-import-name", alloc_cstring(permanent_allocator(), import_name));
}
void lb_set_wasm_export_attributes(LLVMValueRef value, String export_name) {
if (!is_arch_wasm()) {
return;
}
LLVMSetLinkage(value, LLVMDLLExportLinkage);
LLVMSetDLLStorageClass(value, LLVMDLLExportStorageClass);
LLVMSetVisibility(value, LLVMDefaultVisibility);
LLVMAddTargetDependentFunctionAttr(value, "wasm-export-name", alloc_cstring(permanent_allocator(), export_name));
}