From 9654a54d4a2729200d38dbb6eec827cb03dc0f90 Mon Sep 17 00:00:00 2001
From: Takeshi Yoneda <takeshi@tetrate.io>
Date: Fri, 24 Sep 2021 22:14:53 +0900
Subject: Add Visibility field to ExportOptions.

Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
---
 src/stage1/codegen.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/stage1/codegen.cpp')

diff --git a/src/stage1/codegen.cpp b/src/stage1/codegen.cpp
index d101030c33..dece8e7348 100644
--- a/src/stage1/codegen.cpp
+++ b/src/stage1/codegen.cpp
@@ -242,6 +242,18 @@ static LLVMLinkage to_llvm_linkage(GlobalLinkageId id, bool is_extern) {
     zig_unreachable();
 }
 
+static LLVMVisibility to_llvm_visibility(GlobalVisibilityId id) {
+    switch (id) {
+        case GlobalVisibilityIdDefault:
+            return LLVMDefaultVisibility;
+        case GlobalVisibilityIdHidden:
+            return LLVMHiddenVisibility;
+        case GlobalVisibilityIdProtected:
+            return LLVMProtectedVisibility;
+    }
+    zig_unreachable();
+}
+
 struct CalcLLVMFieldIndex {
     uint32_t offset;
     uint32_t field_index;
@@ -400,6 +412,7 @@ static LLVMValueRef make_fn_llvm_value(CodeGen *g, ZigFn *fn) {
     const char *unmangled_name = buf_ptr(&fn->symbol_name);
     const char *symbol_name;
     GlobalLinkageId linkage;
+    GlobalVisibilityId visibility = GlobalVisibilityIdDefault;
     if (fn->body_node == nullptr) {
         symbol_name = unmangled_name;
         linkage = GlobalLinkageIdStrong;
@@ -410,6 +423,7 @@ static LLVMValueRef make_fn_llvm_value(CodeGen *g, ZigFn *fn) {
         GlobalExport *fn_export = &fn->export_list.items[0];
         symbol_name = buf_ptr(&fn_export->name);
         linkage = fn_export->linkage;
+        visibility = fn_export->visibility;
     }
 
     CallingConvention cc = fn->type_entry->data.fn.fn_type_id.cc;
@@ -532,6 +546,8 @@ static LLVMValueRef make_fn_llvm_value(CodeGen *g, ZigFn *fn) {
         LLVMSetUnnamedAddr(llvm_fn, true);
     }
 
+    LLVMSetVisibility(llvm_fn, to_llvm_visibility(visibility));
+
     ZigType *return_type = fn_type->data.fn.fn_type_id.return_type;
     if (return_type->id == ZigTypeIdUnreachable) {
         addLLVMFnAttr(llvm_fn, "noreturn");
@@ -8951,6 +8967,7 @@ static void do_code_gen(CodeGen *g) {
         assert(var->decl_node);
 
         GlobalLinkageId linkage;
+        GlobalVisibilityId visibility = GlobalVisibilityIdDefault;
         const char *unmangled_name = var->name;
         const char *symbol_name;
         if (var->export_list.length == 0) {
@@ -8965,6 +8982,7 @@ static void do_code_gen(CodeGen *g) {
             GlobalExport *global_export = &var->export_list.items[0];
             symbol_name = buf_ptr(&global_export->name);
             linkage = global_export->linkage;
+            visibility = global_export->visibility;
         }
 
         LLVMValueRef global_value;
@@ -9010,6 +9028,8 @@ static void do_code_gen(CodeGen *g) {
             set_global_tls(g, var, global_value);
         }
 
+        LLVMSetVisibility(global_value, to_llvm_visibility(visibility));
+
         var->value_ref = global_value;
 
         for (size_t export_i = 1; export_i < var->export_list.length; export_i += 1) {
-- 
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