[WASM] Eliminate SIMD boolean vector types.

src/compiler/arm/code-generator-arm.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/arm/macro-assembler-arm.h"
 #include "src/assembler-inl.h"
 #include "src/compilation-info.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 2130 matching lines @@
     case kArmS128Xor: {
       __ veor(i.OutputSimd128Register(), i.InputSimd128Register(0),
               i.InputSimd128Register(1));
       break;
     }
     case kArmS128Not: {
       __ vmvn(i.OutputSimd128Register(), i.InputSimd128Register(0));
       break;
     }
     case kArmS128Select: {
-      // vbsl clobbers the mask input so make sure it was DefineSameAsFirst.
-      DCHECK(i.OutputSimd128Register().is(i.InputSimd128Register(0)));
-      __ vbsl(i.OutputSimd128Register(), i.InputSimd128Register(1),
-              i.InputSimd128Register(2));
+      Simd128Register dst = i.OutputSimd128Register();
+      DCHECK(dst.is(i.InputSimd128Register(0)));
+      __ vbsl(dst, i.InputSimd128Register(1), i.InputSimd128Register(2));
       break;
     }
     case kArmS32x4ZipLeft: {
       Simd128Register dst = i.OutputSimd128Register(),
                       src1 = i.InputSimd128Register(1);
       DCHECK(dst.is(i.InputSimd128Register(0)));
       // src0 = [0, 1, 2, 3], src1 = [4, 5, 6, 7]
       __ vmov(dst.high(), src1.low());         // dst = [0, 1, 4, 5]
       __ vtrn(Neon32, dst.low(), dst.high());  // dst = [0, 4, 1, 5]
       break;
@@ skipping 1082 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8