[llvm-commits] Visibility support inside llvm-gcc

[Anton Korobeynikov]

Hello, Everyone.

Attached file will enable llvm-gcc to set visibility information.

-- 
With best regards, Anton Korobeynikov.

Faculty of Mathematics & Mechanics, Saint Petersburg State University.


diff -r 26118361e7fc gcc/llvm-backend.cpp
--- a/gcc/llvm-backend.cpp	Thu Jan 11 10:36:30 2007 +0300
+++ b/gcc/llvm-backend.cpp	Thu Jan 11 10:38:23 2007 +0300
@@ -529,6 +529,10 @@ void emit_global_to_llvm(tree decl) {
 #ifdef TARGET_ADJUST_LLVM_LINKAGE
   TARGET_ADJUST_LLVM_LINKAGE(GV,decl);
 #endif /* TARGET_ADJUST_LLVM_LINKAGE */
+  // Handle visibility style
+  if (DECL_VISIBILITY(decl) == VISIBILITY_HIDDEN)
+    GV->setVisibility(GlobalValue::HiddenVisibility);
+
   // Set the section for the global.
   if (TREE_CODE(decl) == VAR_DECL || TREE_CODE(decl) == CONST_DECL) {
     if (DECL_SECTION_NAME(decl)) {
@@ -690,6 +696,10 @@ void make_decl_llvm(tree decl) {
       TARGET_ADJUST_LLVM_LINKAGE(FnEntry,decl);
 #endif /* TARGET_ADJUST_LLVM_LINKAGE */
 
+      // Handle visibility style
+      if (DECL_VISIBILITY(decl) == VISIBILITY_HIDDEN)
+        FnEntry->setVisibility(Function::HiddenVisibility);
+      
       assert(FnEntry->getName() == Name &&"Preexisting fn with the same name!");
     }
     SET_DECL_LLVM(decl, FnEntry);
@@ -714,6 +724,10 @@ void make_decl_llvm(tree decl) {
 #ifdef TARGET_ADJUST_LLVM_LINKAGE
       TARGET_ADJUST_LLVM_LINKAGE(GV,decl);
 #endif /* TARGET_ADJUST_LLVM_LINKAGE */
+
+      // Handle visibility style
+      if (DECL_VISIBILITY(decl) == VISIBILITY_HIDDEN)
+        GV->setVisibility(Function::HiddenVisibility);
     } else {
       // If the global has a name, prevent multiple vars with the same name from
       // being created.
@@ -730,6 +744,10 @@ void make_decl_llvm(tree decl) {
 #ifdef TARGET_ADJUST_LLVM_LINKAGE
         TARGET_ADJUST_LLVM_LINKAGE(GV,decl);
 #endif /* TARGET_ADJUST_LLVM_LINKAGE */
+
+        // Handle visibility style
+        if (DECL_VISIBILITY(decl) == VISIBILITY_HIDDEN)
+          GV->setVisibility(Function::HiddenVisibility);
       } else {
         GV = GVE;  // Global already created, reuse it.
       }
diff -r 26118361e7fc gcc/llvm-convert.cpp
--- a/gcc/llvm-convert.cpp	Thu Jan 11 10:36:30 2007 +0300
+++ b/gcc/llvm-convert.cpp	Thu Jan 11 10:38:23 2007 +0300
@@ -293,6 +293,12 @@ void TreeToLLVM::StartFunctionBody() {
     Fn = cast<Function>(DECL_LLVM(FnDecl));
     assert(Fn->getCallingConv() == CallingConv &&
            "Calling convention disagreement between prototype and impl!");
+    // The visibility can be changed from the last time we've seen this
+    // function. Set to current.    
+    if (DECL_VISIBILITY(FnDecl) == VISIBILITY_HIDDEN)
+      Fn->setVisibility(Function::HiddenVisibility);
+    else if (DECL_VISIBILITY(FnDecl) == VISIBILITY_DEFAULT)
+      Fn->setVisibility(Function::DefaultVisibility);
   } else {
     Function *&FnEntry = EmittedFunctions[Name];
     if (FnEntry) {
@@ -338,11 +344,14 @@ void TreeToLLVM::StartFunctionBody() {
   } else if (DECL_COMDAT(FnDecl)) {
     Fn->setLinkage(Function::LinkOnceLinkage);
   }
-  
 
 #ifdef TARGET_ADJUST_LLVM_LINKAGE
   TARGET_ADJUST_LLVM_LINKAGE(Fn,FnDecl);
 #endif /* TARGET_ADJUST_LLVM_LINKAGE */
+
+  // Handle visibility style
+  if (DECL_VISIBILITY(FnDecl) == VISIBILITY_HIDDEN)
+    Fn->setVisibility(Function::HiddenVisibility);
   
   // Handle functions in specified sections.
   if (DECL_SECTION_NAME(FnDecl))

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