Index: include/clang/Basic/BuiltinsWebAssembly.def
===================================================================
--- include/clang/Basic/BuiltinsWebAssembly.def
+++ include/clang/Basic/BuiltinsWebAssembly.def
@@ -104,9 +104,9 @@
 BUILTIN(__builtin_wasm_sqrt_f32x4, "V4fV4f", "nc")
 BUILTIN(__builtin_wasm_sqrt_f64x2, "V2dV2d", "nc")
 
-BUILTIN(__builtin_wasm_trunc_saturate_s_v4i32_v4f32, "V4iV4f", "nc")
-BUILTIN(__builtin_wasm_trunc_saturate_u_v4i32_v4f32, "V4iV4f", "nc")
-BUILTIN(__builtin_wasm_trunc_saturate_s_v2i64_v2f64, "V2LLiV2d", "nc")
-BUILTIN(__builtin_wasm_trunc_saturate_u_v2i64_v2f64, "V2LLiV2d", "nc")
+BUILTIN(__builtin_wasm_trunc_saturate_s_i32x4_f32x4, "V4iV4f", "nc")
+BUILTIN(__builtin_wasm_trunc_saturate_u_i32x4_f32x4, "V4iV4f", "nc")
+BUILTIN(__builtin_wasm_trunc_saturate_s_i64x2_f64x2, "V2LLiV2d", "nc")
+BUILTIN(__builtin_wasm_trunc_saturate_u_i64x2_f64x2, "V2LLiV2d", "nc")
 
 #undef BUILTIN
Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp
+++ lib/CodeGen/CGBuiltin.cpp
@@ -12605,8 +12605,8 @@
   case WebAssembly::BI__builtin_wasm_trunc_saturate_s_i32_f64:
   case WebAssembly::BI__builtin_wasm_trunc_saturate_s_i64_f32:
   case WebAssembly::BI__builtin_wasm_trunc_saturate_s_i64_f64:
-  case WebAssembly::BI__builtin_wasm_trunc_saturate_s_v4i32_v4f32:
-  case WebAssembly::BI__builtin_wasm_trunc_saturate_s_v2i64_v2f64: {
+  case WebAssembly::BI__builtin_wasm_trunc_saturate_s_i32x4_f32x4:
+  case WebAssembly::BI__builtin_wasm_trunc_saturate_s_i64x2_f64x2: {
     Value *Src = EmitScalarExpr(E->getArg(0));
     llvm::Type *ResT = ConvertType(E->getType());
     Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_trunc_saturate_signed,
@@ -12617,8 +12617,8 @@
   case WebAssembly::BI__builtin_wasm_trunc_saturate_u_i32_f64:
   case WebAssembly::BI__builtin_wasm_trunc_saturate_u_i64_f32:
   case WebAssembly::BI__builtin_wasm_trunc_saturate_u_i64_f64:
-  case WebAssembly::BI__builtin_wasm_trunc_saturate_u_v4i32_v4f32:
-  case WebAssembly::BI__builtin_wasm_trunc_saturate_u_v2i64_v2f64: {
+  case WebAssembly::BI__builtin_wasm_trunc_saturate_u_i32x4_f32x4:
+  case WebAssembly::BI__builtin_wasm_trunc_saturate_u_i64x2_f64x2: {
     Value *Src = EmitScalarExpr(E->getArg(0));
     llvm::Type *ResT = ConvertType(E->getType());
     Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_trunc_saturate_unsigned,
Index: test/CodeGen/builtins-wasm.c
===================================================================
--- test/CodeGen/builtins-wasm.c
+++ test/CodeGen/builtins-wasm.c
@@ -409,26 +409,26 @@
   // WEBASSEMBLY: ret
 }
 
-i32x4 trunc_saturate_s_v4i32_v4f32(f32x4 f) {
-  return __builtin_wasm_trunc_saturate_s_v4i32_v4f32(f);
+i32x4 trunc_saturate_s_i32x4_f32x4(f32x4 f) {
+  return __builtin_wasm_trunc_saturate_s_i32x4_f32x4(f);
   // WEBASSEMBLY: call <4 x i32> @llvm.wasm.trunc.saturate.signed.v4i32.v4f32(<4 x float> %f)
   // WEBASSEMBLY-NEXT: ret
 }
 
-i32x4 trunc_saturate_u_v4i32_v4f32(f32x4 f) {
-  return __builtin_wasm_trunc_saturate_u_v4i32_v4f32(f);
+i32x4 trunc_saturate_u_i32x4_f32x4(f32x4 f) {
+  return __builtin_wasm_trunc_saturate_u_i32x4_f32x4(f);
   // WEBASSEMBLY: call <4 x i32> @llvm.wasm.trunc.saturate.unsigned.v4i32.v4f32(<4 x float> %f)
   // WEBASSEMBLY-NEXT: ret
 }
 
-i64x2 trunc_saturate_s_v2i64_v2f64(f64x2 f) {
-  return __builtin_wasm_trunc_saturate_s_v2i64_v2f64(f);
+i64x2 trunc_saturate_s_i64x2_f64x2(f64x2 f) {
+  return __builtin_wasm_trunc_saturate_s_i64x2_f64x2(f);
   // WEBASSEMBLY: call <2 x i64> @llvm.wasm.trunc.saturate.signed.v2i64.v2f64(<2 x double> %f)
   // WEBASSEMBLY-NEXT: ret
 }
 
-i64x2 trunc_saturate_u_v2i64_v2f64(f64x2 f) {
-  return __builtin_wasm_trunc_saturate_u_v2i64_v2f64(f);
+i64x2 trunc_saturate_u_i64x2_f64x2(f64x2 f) {
+  return __builtin_wasm_trunc_saturate_u_i64x2_f64x2(f);
   // WEBASSEMBLY: call <2 x i64> @llvm.wasm.trunc.saturate.unsigned.v2i64.v2f64(<2 x double> %f)
   // WEBASSEMBLY-NEXT: ret
 }