[OpenCL] Make sure we put string literals in the constant address space.

llvm-svn: 194717

1 files changed, 9 insertions, 4 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 1f2f4bbde3c..da54de0bed8 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2625,11 +2625,16 @@ static llvm::GlobalVariable *GenerateStringLiteral(StringRef str,
   llvm::Constant *C =
       llvm::ConstantDataArray::getString(CGM.getLLVMContext(), str, false);
 
+  // OpenCL v1.1 s6.5.3: a string literal is in the constant address space.
+  unsigned AddrSpace = 0;
+  if (CGM.getLangOpts().OpenCL)
+    AddrSpace = CGM.getContext().getTargetAddressSpace(LangAS::opencl_constant);
+
   // Create a global variable for this string
-  llvm::GlobalVariable *GV =
-    new llvm::GlobalVariable(CGM.getModule(), C->getType(), constant,
-                             llvm::GlobalValue::PrivateLinkage,
-                             C, GlobalName);
+  llvm::GlobalVariable *GV = new llvm::GlobalVariable(
+      CGM.getModule(), C->getType(), constant,
+      llvm::GlobalValue::PrivateLinkage, C, GlobalName, 0,
+      llvm::GlobalVariable::NotThreadLocal, AddrSpace);
   GV->setAlignment(Alignment);
   GV->setUnnamedAddr(true);
   return GV;