diff --git a/lib/Target/R600/AMDGPU.h b/lib/Target/R600/AMDGPU.h
index 5d0cf81c402..949fdfb217a 100644
--- a/lib/Target/R600/AMDGPU.h
+++ b/lib/Target/R600/AMDGPU.h
@@ -80,8 +80,8 @@ enum AddressSpaces {
   GLOBAL_ADDRESS   = 1, ///< Address space for global memory (RAT0, VTX0).
   CONSTANT_ADDRESS = 2, ///< Address space for constant memory
   LOCAL_ADDRESS    = 3, ///< Address space for local memory.
-  REGION_ADDRESS   = 4, ///< Address space for region memory.
-  ADDRESS_NONE     = 5, ///< Address space for unknown memory.
+  FLAT_ADDRESS     = 4, ///< Address space for flat memory.
+  REGION_ADDRESS   = 5, ///< Address space for region memory.
   PARAM_D_ADDRESS  = 6, ///< Address space for direct addressible parameter memory (CONST0)
   PARAM_I_ADDRESS  = 7, ///< Address space for indirect addressible parameter memory (VTX1)
 
@@ -106,7 +106,8 @@ enum AddressSpaces {
   CONSTANT_BUFFER_13 = 21,
   CONSTANT_BUFFER_14 = 22,
   CONSTANT_BUFFER_15 = 23,
-  LAST_ADDRESS     = 24
+  ADDRESS_NONE = 24, ///< Address space for unknown memory.
+  LAST_ADDRESS = ADDRESS_NONE
 };
 
 } // namespace AMDGPUAS
diff --git a/lib/Target/R600/AMDGPUTargetMachine.cpp b/lib/Target/R600/AMDGPUTargetMachine.cpp
index 6b68c2abe36..174fdca3bd7 100644
--- a/lib/Target/R600/AMDGPUTargetMachine.cpp
+++ b/lib/Target/R600/AMDGPUTargetMachine.cpp
@@ -54,7 +54,7 @@ static std::string computeDataLayout(const AMDGPUSubtarget &ST) {
 
   if (ST.is64bit()) {
     // 32-bit private, local, and region pointers. 64-bit global and constant.
-    Ret += "-p1:64:64-p2:64:64-p3:32:32-p4:32:32-p5:64:64";
+    Ret += "-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-p24:64:64";
   }
 
   Ret += "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256"