diff options
Diffstat (limited to 'src/codegen.cpp')
| -rw-r--r-- | src/codegen.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/codegen.cpp b/src/codegen.cpp index e926d14a7e..7ea322c1c3 100644 --- a/src/codegen.cpp +++ b/src/codegen.cpp @@ -5812,12 +5812,16 @@ static void do_code_gen(CodeGen *g) { LLVMValueRef global_value; if (var->linkage == VarLinkageExternal) { - global_value = LLVMAddGlobal(g->module, var->value->type->type_ref, buf_ptr(&var->name)); - - // TODO debug info for the extern variable + LLVMValueRef existing_llvm_var = LLVMGetNamedGlobal(g->module, buf_ptr(&var->name)); + if (existing_llvm_var) { + global_value = LLVMConstBitCast(existing_llvm_var, LLVMPointerType(var->value->type->type_ref, 0)); + } else { + global_value = LLVMAddGlobal(g->module, var->value->type->type_ref, buf_ptr(&var->name)); + // TODO debug info for the extern variable - LLVMSetLinkage(global_value, LLVMExternalLinkage); - LLVMSetAlignment(global_value, var->align_bytes); + LLVMSetLinkage(global_value, LLVMExternalLinkage); + LLVMSetAlignment(global_value, var->align_bytes); + } } else { bool exported = (var->linkage == VarLinkageExport); const char *mangled_name = buf_ptr(get_mangled_name(g, &var->name, exported)); |