From: Mike Stump <mrs@apple.com>
Date: Sat, 7 Mar 2009 02:53:18 +0000 (+0000)
Subject: codegen support for dispose helpers for block literals.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1edf6b646ea161ce1193ba278ae88de82ff7114d;p=clang

codegen support for dispose helpers for block literals.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66320 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index 8020a8b26f..344ac60d98 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -802,7 +802,29 @@ GenerateDestroyHelperFunction(bool BlockHasCopyDispose,
                                           FunctionDecl::Static, false,
                                           true);
   CGF.StartFunction(FD, R, Fn, Args, SourceLocation());
-  // EmitStmt(BExpr->getBody());
+
+  llvm::Value *SrcObj = CGF.GetAddrOfLocalVar(Src);
+  llvm::Type *PtrPtrT;
+  PtrPtrT = llvm::PointerType::get(llvm::PointerType::get(T, 0), 0);
+  SrcObj = Builder.CreateBitCast(SrcObj, PtrPtrT);
+  SrcObj = Builder.CreateLoad(SrcObj);
+
+  for (unsigned i=0; i < NoteForHelper.size(); ++i) {
+    int flag = NoteForHelper[i].flag;
+    int index = NoteForHelper[i].index;
+
+    if ((NoteForHelper[i].flag & BLOCK_FIELD_IS_BYREF)
+        || NoteForHelper[i].RequiresCopying) {
+      llvm::Value *Srcv = SrcObj;
+      Srcv = Builder.CreateStructGEP(Srcv, index);
+      Srcv = Builder.CreateBitCast(Srcv,
+                                   llvm::PointerType::get(PtrToInt8Ty, 0));
+      Srcv = Builder.CreateLoad(Srcv);
+
+      BuildBlockRelease(Srcv, flag);
+    }
+  }
+
   CGF.FinishFunction();
 
   return llvm::ConstantExpr::getBitCast(Fn, PtrToInt8Ty);
diff --git a/test/CodeGen/blocks-1.c b/test/CodeGen/blocks-1.c
index 8b5de629e8..df2a3fda6b 100644
--- a/test/CodeGen/blocks-1.c
+++ b/test/CodeGen/blocks-1.c
@@ -1,5 +1,5 @@
 // RUN: clang %s -emit-llvm -o %t -fblocks -f__block &&
-// RUN: grep "_Block_object_dispose" %t | count 6 &&
+// RUN: grep "_Block_object_dispose" %t | count 10 &&
 // RUN: grep "__copy_helper_block_" %t | count 6 &&
 // RUN: grep "__destroy_helper_block_" %t | count 6 &&
 // RUN: grep "__Block_byref_id_object_copy_" %t | count 2 &&