From 5828ee7a2782301ef4a54b7277d6b39f928c288e Mon Sep 17 00:00:00 2001
From: John McCall <rjmccall@apple.com>
Date: Mon, 3 May 2010 21:39:56 +0000
Subject: Just bail out immediately when emitting an unreachable function-local
 static variable.  Surprisingly, this does seem to be the right way to solve
 this.

llvm-svn: 102961
---
 clang/lib/CodeGen/CGDecl.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'clang/lib/CodeGen/CGDecl.cpp')

diff --git a/clang/lib/CodeGen/CGDecl.cpp b/clang/lib/CodeGen/CGDecl.cpp
index 98a449ad764..244a5323d4b 100644
--- a/clang/lib/CodeGen/CGDecl.cpp
+++ b/clang/lib/CodeGen/CGDecl.cpp
@@ -231,6 +231,9 @@ CodeGenFunction::AddInitializerToGlobalBlockVarDecl(const VarDecl &D,
 
 void CodeGenFunction::EmitStaticBlockVarDecl(const VarDecl &D,
                                       llvm::GlobalValue::LinkageTypes Linkage) {
+  // Bail out early if the block is unreachable.
+  if (!Builder.GetInsertBlock()) return;
+
   llvm::Value *&DMEntry = LocalDeclMap[&D];
   assert(DMEntry == 0 && "Decl already exists in localdeclmap!");
 
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