Index: cfe/trunk/lib/Basic/Targets.cpp
===================================================================
--- cfe/trunk/lib/Basic/Targets.cpp
+++ cfe/trunk/lib/Basic/Targets.cpp
@@ -2042,10 +2042,10 @@
 static const LangAS::Map AMDGPUGenericIsZeroMap = {
     1,  // opencl_global
     3,  // opencl_local
-    4,  // opencl_constant
+    2,  // opencl_constant
     0,  // opencl_generic
     1,  // cuda_device
-    4,  // cuda_constant
+    2,  // cuda_constant
     3   // cuda_shared
 };
 
@@ -2062,7 +2062,7 @@
   "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64";
 
 static const char *const DataLayoutStringSIGenericIsZero =
-  "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32"
+  "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:32:32-p5:32:32"
   "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128"
   "-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64";
 
@@ -2077,7 +2077,7 @@
         Generic   = 0;
         Global    = 1;
         Local     = 3;
-        Constant  = 4;
+        Constant  = 2;
         Private   = 5;
       } else {
         Generic   = 4;
Index: cfe/trunk/test/CodeGenOpenCL/address-space-constant-initializers.cl
===================================================================
--- cfe/trunk/test/CodeGenOpenCL/address-space-constant-initializers.cl
+++ cfe/trunk/test/CodeGenOpenCL/address-space-constant-initializers.cl
@@ -1,4 +1,6 @@
 // RUN: %clang_cc1 %s -ffake-address-space-map -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 %s -triple amdgcn-amd-amdhsa-opencl -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 %s -triple amdgcn-amd-amdhsa-amdgizcl -emit-llvm -o - | FileCheck %s
 
 typedef struct {
     int i;
Index: cfe/trunk/test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
===================================================================
--- cfe/trunk/test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
+++ cfe/trunk/test/CodeGenOpenCL/amdgpu-env-amdgiz.cl
@@ -4,6 +4,6 @@
 // RUN: %clang_cc1 %s -O0 -triple amdgcn---amdgizcl -emit-llvm -o - | FileCheck -check-prefix=GIZ %s
 
 // CHECK: target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
-// GIZ: target datalayout = "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
+// GIZ: target datalayout = "e-p:64:64-p1:64:64-p2:64:64-p3:32:32-p4:32:32-p5:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
 void foo(void) {}