Index: include/llvm/BinaryFormat/Wasm.h
===================================================================
--- include/llvm/BinaryFormat/Wasm.h
+++ include/llvm/BinaryFormat/Wasm.h
@@ -191,6 +191,7 @@
   WASM_TYPE_I64 = 0x7E,
   WASM_TYPE_F32 = 0x7D,
   WASM_TYPE_F64 = 0x7C,
+  WASM_TYPE_V128 = 0x7B,
   WASM_TYPE_ANYFUNC = 0x70,
   WASM_TYPE_EXCEPT_REF = 0x68,
   WASM_TYPE_FUNC = 0x60,
@@ -225,6 +226,7 @@
   I64 = WASM_TYPE_I64,
   F32 = WASM_TYPE_F32,
   F64 = WASM_TYPE_F64,
+  V128 = WASM_TYPE_V128,
   EXCEPT_REF = WASM_TYPE_EXCEPT_REF,
 };
 
Index: lib/ObjectYAML/WasmYAML.cpp
===================================================================
--- lib/ObjectYAML/WasmYAML.cpp
+++ lib/ObjectYAML/WasmYAML.cpp
@@ -452,6 +452,7 @@
   ECase(I64);
   ECase(F32);
   ECase(F64);
+  ECase(V128);
   ECase(ANYFUNC);
   ECase(FUNC);
   ECase(NORESULT);
Index: lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
===================================================================
--- lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
+++ lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.h
@@ -51,7 +51,6 @@
 namespace WebAssembly {
 
 const char *TypeToString(MVT Ty);
-const char *TypeToString(wasm::ValType Type);
 
 } // end namespace WebAssembly
 
Index: lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
===================================================================
--- lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
+++ lib/Target/WebAssembly/InstPrinter/WebAssemblyInstPrinter.cpp
@@ -258,19 +258,3 @@
     llvm_unreachable("unsupported type");
   }
 }
-
-const char *llvm::WebAssembly::TypeToString(wasm::ValType Type) {
-  switch (Type) {
-  case wasm::ValType::I32:
-    return "i32";
-  case wasm::ValType::I64:
-    return "i64";
-  case wasm::ValType::F32:
-    return "f32";
-  case wasm::ValType::F64:
-    return "f64";
-  case wasm::ValType::EXCEPT_REF:
-    return "except_ref";
-  }
-  llvm_unreachable("unsupported type");
-}
Index: lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
===================================================================
--- lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
+++ lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.cpp
@@ -133,6 +133,13 @@
     return wasm::ValType::F32;
   case MVT::f64:
     return wasm::ValType::F64;
+  case MVT::v16i8:
+  case MVT::v8i16:
+  case MVT::v4i32:
+  case MVT::v2i64:
+  case MVT::v4f32:
+  case MVT::v2f64:
+    return wasm::ValType::V128;
   case MVT::ExceptRef:
     return wasm::ValType::EXCEPT_REF;
   default:
Index: lib/Target/WebAssembly/WebAssemblyInstrCall.td
===================================================================
--- lib/Target/WebAssembly/WebAssemblyInstrCall.td
+++ lib/Target/WebAssembly/WebAssemblyInstrCall.td
@@ -89,12 +89,12 @@
   defm "" : CALL<F32, "f32.">;
   defm "" : CALL<F64, "f64.">;
   defm "" : CALL<EXCEPT_REF, "except_ref.">;
-  defm "" : SIMD_CALL<v16i8, "i8x16.">;
-  defm "" : SIMD_CALL<v8i16, "i16x8.">;
-  defm "" : SIMD_CALL<v4i32, "i32x4.">;
-  defm "" : SIMD_CALL<v2i64, "i64x2.">;
-  defm "" : SIMD_CALL<v4f32, "f32x4.">;
-  defm "" : SIMD_CALL<v2f64, "f64x2.">;
+  defm "" : SIMD_CALL<v16i8, "v128.">;
+  defm "" : SIMD_CALL<v8i16, "v128.">;
+  defm "" : SIMD_CALL<v4i32, "v128.">;
+  defm "" : SIMD_CALL<v2i64, "v128.">;
+  defm "" : SIMD_CALL<v4f32, "v128.">;
+  defm "" : SIMD_CALL<v2f64, "v128.">;
 
   defm CALL_VOID : I<(outs), (ins function32_op:$callee, variable_ops),
                      (outs), (ins function32_op:$callee),
Index: lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
===================================================================
--- lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
+++ lib/Target/WebAssembly/WebAssemblyMCInstLower.cpp
@@ -149,6 +149,8 @@
     return wasm::ValType::F32;
   if (RC == &WebAssembly::F64RegClass)
     return wasm::ValType::F64;
+  if (RC == &WebAssembly::V128RegClass)
+    return wasm::ValType::V128;
   llvm_unreachable("Unexpected register class");
 }
 
Index: test/CodeGen/WebAssembly/call.ll
===================================================================
--- test/CodeGen/WebAssembly/call.ll
+++ test/CodeGen/WebAssembly/call.ll
@@ -1,5 +1,5 @@
-; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -wasm-temporary-workarounds=false | FileCheck %s
-; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -fast-isel -fast-isel-abort=1 -wasm-temporary-workarounds=false | FileCheck %s
+; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -wasm-temporary-workarounds=false -mattr=+sign-ext,+simd128 | FileCheck %s
+; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers -fast-isel -fast-isel-abort=1 -wasm-temporary-workarounds=false -mattr=+sign-ext,+simd128 | FileCheck %s
 
 ; Test that basic call operations assemble as expected.
 
@@ -12,6 +12,7 @@
 declare i64 @i64_nullary()
 declare float @float_nullary()
 declare double @double_nullary()
+declare <16 x i8> @v128_nullary()
 declare void @void_nullary()
 
 ; CHECK-LABEL: call_i32_nullary:
@@ -50,6 +51,15 @@
   ret double %r
 }
 
+; CHECK-LABEL: call_v128_nullary:
+; CHECK-NEXT: .result v128{{$}}
+; CHECK-NEXT: {{^}} v128.call $push[[NUM:[0-9]+]]=, v128_nullary@FUNCTION{{$}}
+; CHECK-NEXT: return $pop[[NUM]]{{$}}
+define <16 x i8> @call_v128_nullary() {
+  %r = call <16 x i8> @v128_nullary()
+  ret <16 x i8> %r
+}
+
 ; CHECK-LABEL: call_void_nullary:
 ; CHECK-NEXT: {{^}} call void_nullary@FUNCTION{{$}}
 ; CHECK-NEXT: return{{$}}
@@ -102,6 +112,17 @@
   ret i32 %t
 }
 
+; CHECK-LABEL: call_indirect_v128:
+; CHECK-NEXT: .param i32{{$}}
+; CHECK-NEXT: .result v128{{$}}
+; CHECK-NEXT: get_local $push[[L0:[0-9]+]]=, 0{{$}}
+; CHECK-NEXT: {{^}} v128.call_indirect $push[[NUM:[0-9]+]]=, $pop[[L0]]{{$}}
+; CHECK-NEXT: return $pop[[NUM]]{{$}}
+define <16 x i8> @call_indirect_v128(<16 x i8> ()* %callee) {
+  %t = call <16 x i8> %callee()
+  ret <16 x i8> %t
+}
+
 ; CHECK-LABEL: call_indirect_arg:
 ; CHECK-NEXT: .param i32, i32{{$}}
 ; CHECK-NEXT: get_local $push[[L0:[0-9]+]]=, 1{{$}}
Index: test/MC/WebAssembly/types.ll
===================================================================
--- /dev/null
+++ test/MC/WebAssembly/types.ll
@@ -0,0 +1,52 @@
+; RUN: llc -wasm-enable-unimplemented-simd -mattr=+sign-ext,+simd128 -filetype=obj %s -o - | obj2yaml | FileCheck %s
+
+target triple = "wasm32-unknown-unknown"
+
+declare i32 @i32()
+declare i64 @i64()
+declare float @f32()
+declare double @f64()
+declare <16 x i8> @v16i8()
+declare <8 x i16> @v8i16()
+declare <4 x i32> @v4i32()
+declare <2 x i64> @v2i64()
+declare <4 x float> @v4f32()
+declare <2 x double> @v2f64()
+
+define void @f1() {
+entry:
+  %tmp1 = call i32 @i32()
+  %tmp2 = call i64 @i64()
+  %tmp3 = call float @f32()
+  %tmp4 = call double @f64()
+  %tmp5 = call <16 x i8> @v16i8()
+  %tmp6 = call <8 x i16> @v8i16()
+  %tmp7 = call <4 x i32> @v4i32()
+  %tmp8 = call <2 x i64> @v2i64()
+  %tmp9 = call <4 x float> @v4f32()
+  %tmp10 = call <2 x double> @v2f64()
+  ret void
+}
+
+; CHECK-LABEL: - Type: TYPE
+; CHECK-NEXT:    Signatures:
+; CHECK-NEXT:       - Index: 0
+; CHECK-NEXT:         ReturnType: NORESULT
+; CHECK-NEXT:         ParamTypes:
+; CHECK-NEXT:       - Index: 1
+; CHECK-NEXT:         ReturnType: I32
+; CHECK-NEXT:         ParamTypes:
+; CHECK-NEXT:       - Index: 2
+; CHECK-NEXT:         ReturnType: I64
+; CHECK-NEXT:         ParamTypes:
+; CHECK-NEXT:       - Index: 3
+; CHECK-NEXT:         ReturnType: F32
+; CHECK-NEXT:         ParamTypes:
+; CHECK-NEXT:       - Index: 4
+; CHECK-NEXT:         ReturnType: F64
+; CHECK-NEXT:         ParamTypes:
+; CHECK-NEXT:       - Index: 5
+; CHECK-NEXT:         ReturnType: V128
+; CHECK-NEXT:         ParamTypes:
+; should be no additional types
+; CHECK-NOT: ReturnType