[arm64] Fix another ubfx corner case.

src/compiler/arm64/instruction-selector-arm64.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/assembler-inl.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
@@ skipping 901 matching lines @@
 
 
 void InstructionSelector::VisitWord32And(Node* node) {
   Arm64OperandGenerator g(this);
   Int32BinopMatcher m(node);
   if (m.left().IsWord32Shr() && CanCover(node, m.left().node()) &&
       m.right().HasValue()) {
     uint32_t mask = m.right().Value();
     uint32_t mask_width = base::bits::CountPopulation32(mask);
     uint32_t mask_msb = base::bits::CountLeadingZeros32(mask);
-    if ((mask_width != 0) && (mask_msb + mask_width == 32)) {
+    if ((mask_width != 0) && (mask_width != 32) &&
+        (mask_msb + mask_width == 32)) {
       // The mask must be contiguous, and occupy the least-significant bits.
       DCHECK_EQ(0u, base::bits::CountTrailingZeros32(mask));
 
       // Select Ubfx for And(Shr(x, imm), mask) where the mask is in the least
       // significant bits.
       Int32BinopMatcher mleft(m.left().node());
       if (mleft.right().HasValue()) {
         // Any shift value can match; int32 shifts use `value % 32`.
         uint32_t lsb = mleft.right().Value() & 0x1f;
 
@@ skipping 1931 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8