[arm64] Use ubfiz in ARM64 instruction selector

test/unittests/compiler/arm64/instruction-selector-arm64-unittest.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 "test/unittests/compiler/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 2411 matching lines @@
     ASSERT_EQ(1U, s.size());
     EXPECT_EQ(kArm64Ubfx32, s[0]->arch_opcode());
     ASSERT_EQ(3U, s[0]->InputCount());
     EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
     ASSERT_EQ(1U, s[0]->OutputCount());
     EXPECT_EQ(s.ToVreg(r), s.ToVreg(s[0]->Output()));
   }
 }
 
 
+TEST_F(InstructionSelectorTest, Word32ShlWithWord32And) {
+  TRACED_FORRANGE(int32_t, shift, 1, 30) {
+    StreamBuilder m(this, kMachInt32, kMachInt32);
+    Node* const p0 = m.Parameter(0);
+    Node* const r =
+        m.Word32Shl(m.Word32And(p0, m.Int32Constant((1 << (31 - shift)) - 1)),
+                    m.Int32Constant(shift));
+    m.Return(r);
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(kArm64Ubfiz32, s[0]->arch_opcode());
+    ASSERT_EQ(3U, s[0]->InputCount());
+    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
+    ASSERT_EQ(1U, s[0]->OutputCount());
+    EXPECT_EQ(s.ToVreg(r), s.ToVreg(s[0]->Output()));
+  }
+  TRACED_FORRANGE(int32_t, shift, 0, 30) {
+    StreamBuilder m(this, kMachInt32, kMachInt32);
+    Node* const p0 = m.Parameter(0);
+    Node* const r =
+        m.Word32Shl(m.Word32And(p0, m.Int32Constant((1 << (31 - shift)) - 1)),
+                    m.Int32Constant(shift + 1));
+    m.Return(r);
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(kArm64Lsl32, s[0]->arch_opcode());
+    ASSERT_EQ(2U, s[0]->InputCount());
+    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
+    ASSERT_EQ(1U, s[0]->OutputCount());
+    EXPECT_EQ(s.ToVreg(r), s.ToVreg(s[0]->Output()));
+  }
+}
+
+
 TEST_F(InstructionSelectorTest, Word32Clz) {
   StreamBuilder m(this, kMachUint32, kMachUint32);
   Node* const p0 = m.Parameter(0);
   Node* const n = m.Word32Clz(p0);
   m.Return(n);
   Stream s = m.Build();
   ASSERT_EQ(1U, s.size());
   EXPECT_EQ(kArm64Clz32, s[0]->arch_opcode());
   ASSERT_EQ(1U, s[0]->InputCount());
   EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
@@ skipping 42 matching lines @@
   EXPECT_EQ(kArm64Float64Neg, s[0]->arch_opcode());
   ASSERT_EQ(1U, s[0]->InputCount());
   EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
   ASSERT_EQ(1U, s[0]->OutputCount());
   EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8