Make address-space qualification work correctly for compound literals.

Issue reported on cfe-dev.

Also fixed the code to use isConstant to determine whether to generate a 
constant global, to be consistent with CodeGenModule.  This probably 
needs to be refactored to deal with C++, though.

llvm-svn: 80131

clang/lib/CodeGen/CGExprConstant.cpp

@@ -591,9 +591,10 @@ public:
       // FIXME: "Leaked" on failure.
       if (C)
         C = new llvm::GlobalVariable(CGM.getModule(), C->getType(),
-                                     E->getType().isConstQualified(), 
+                                     E->getType().isConstant(CGM.getContext()),
                                      llvm::GlobalValue::InternalLinkage,
-                                     C, ".compoundliteral");
+                                     C, ".compoundliteral", 0, false,
+                                     E->getType().getAddressSpace());
       return C;
     }
     case Expr::DeclRefExprClass: 

clang/test/CodeGen/address-space-compound-literal.c

@@ -0,0 +1,5 @@
+// RUN: clang-cc -emit-llvm < %s | grep "internal addrspace(1) global i32 1"
+
+typedef int a __attribute__((address_space(1)));
+a* x = &(a){1};
+