[wasm] Fixed register allocation for Word32PairShl on arm.

test/cctest/compiler/test-run-machops.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 <cmath>
 #include <functional>
 #include <limits>
 
 #include "src/base/bits.h"
 #include "src/base/utils/random-number-generator.h"
@@ skipping 4246 matching lines @@
 }
 
 TEST(RunInt32PairAddWithSharedInput) {
   TestInt32PairAddWithSharedInput(0, 0, 0, 0);
   TestInt32PairAddWithSharedInput(1, 0, 0, 0);
   TestInt32PairAddWithSharedInput(0, 1, 0, 0);
   TestInt32PairAddWithSharedInput(0, 0, 1, 0);
   TestInt32PairAddWithSharedInput(0, 0, 0, 1);
   TestInt32PairAddWithSharedInput(1, 1, 0, 0);
 }
+
+TEST(RunWord32PairShl) {
+  BufferedRawMachineAssemblerTester<int32_t> m(
+      MachineType::Uint32(), MachineType::Uint32(), MachineType::Uint32());
+
+  uint32_t high;
+  uint32_t low;
+
+  Node* PairAdd =
+      m.Word32PairShl(m.Parameter(0), m.Parameter(1), m.Parameter(2));
+
+  m.StoreToPointer(&low, MachineRepresentation::kWord32,
+                   m.Projection(0, PairAdd));
+  m.StoreToPointer(&high, MachineRepresentation::kWord32,
+                   m.Projection(1, PairAdd));
+  m.Return(m.Int32Constant(74));
+
+  FOR_INT64_INPUTS(i) {
+    for (uint32_t j = 0; j < 64; j++) {
+      m.Call(static_cast<uint32_t>(*i & 0xffffffff),
+             static_cast<uint32_t>(*i >> 32), j);
+      CHECK_EQ(*i << j, ToInt64(low, high));
+    }
+  }
+}
+
+void TestWord32PairShlWithSharedInput(int a, int b) {
+  BufferedRawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
+                                               MachineType::Uint32());
+
+  uint32_t high;
+  uint32_t low;
+
+  Node* PairAdd =
+      m.Word32PairShl(m.Parameter(a), m.Parameter(b), m.Parameter(1));
+
+  m.StoreToPointer(&low, MachineRepresentation::kWord32,
+                   m.Projection(0, PairAdd));
+  m.StoreToPointer(&high, MachineRepresentation::kWord32,
+                   m.Projection(1, PairAdd));
+  m.Return(m.Int32Constant(74));
+
+  FOR_UINT32_INPUTS(i) {
+    for (uint32_t j = 0; j < 64; j++) {
+      m.Call(*i, j);
+      uint32_t inputs[] = {*i, j};
+      CHECK_EQ(ToInt64(inputs[a], inputs[b]) << j, ToInt64(low, high));
+    }
+  }
+}
+
+TEST(RunWord32PairShlWithSharedInput) {
+  TestWord32PairShlWithSharedInput(0, 0);
+  TestWord32PairShlWithSharedInput(0, 1);
+  TestWord32PairShlWithSharedInput(1, 0);
+  TestWord32PairShlWithSharedInput(1, 1);
+}
+
 #endif
 
 TEST(RunDeadChangeFloat64ToInt32) {
   RawMachineAssemblerTester<int32_t> m;
   const int magic = 0x88abcda4;
   m.ChangeFloat64ToInt32(m.Float64Constant(999.78));
   m.Return(m.Int32Constant(magic));
   CHECK_EQ(magic, m.Call());
 }
 
@@ skipping 1918 matching lines @@
   r.Goto(&merge);
   r.Bind(&merge);
   Node* phi = r.Phi(MachineRepresentation::kWord32, fa, fb);
   r.Return(phi);
   CHECK_EQ(1, r.Call(1));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8