diff --git a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
index bb950a0..53daa16 100644
--- a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -73,7 +73,7 @@
   : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
     DL("e-p:32:32:32-"
                 "i64:64:64-i32:32:32-i16:16:16-i1:32:32-"
-                "f64:64:64-f32:32:32-a0:0-n32") ,
+                "f64:64:64-f32:32:32-a:0-n32") ,
     Subtarget(TT, CPU, FS), InstrInfo(Subtarget), TLInfo(*this),
     TSInfo(*this),
     FrameLowering(Subtarget),
diff --git a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
index dee92e9..87c09b5 100644
--- a/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -31,7 +31,7 @@
     // so that we can refer to it using LARL.  We don't have any special
     // requirements for stack variables though.
     DL("E-p:64:64:64-i1:8:16-i8:8:16-i16:16-i32:32-i64:64"
-       "-f32:32-f64:64-f128:64-a0:8:16-n32:64"),
+       "-f32:32-f64:64-f128:64-a:8:16-n32:64"),
     InstrInfo(*this), TLInfo(*this), TSInfo(*this),
     FrameLowering(*this, Subtarget) {
   initAsmInfo();
diff --git a/llvm/lib/Target/XCore/XCoreTargetMachine.cpp b/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
index 9ae0b86..08fe55d 100644
--- a/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
+++ b/llvm/lib/Target/XCore/XCoreTargetMachine.cpp
@@ -27,7 +27,7 @@
                                        CodeGenOpt::Level OL)
   : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
     Subtarget(TT, CPU, FS),
-    DL("e-p:32:32:32-a0:0:32-f32:32:32-f64:32:32-i1:8:32-i8:8:32-"
+    DL("e-p:32:32:32-a:0:32-f32:32:32-f64:32:32-i1:8:32-i8:8:32-"
                "i16:16:32-i32:32:32-i64:32:32-n32"),
     InstrInfo(),
     FrameLowering(Subtarget),