[wasm] Trim graph before scheduling.

test/cctest/compiler/test-run-machops.cc

Index: test/cctest/compiler/test-run-machops.cc
diff --git a/test/cctest/compiler/test-run-machops.cc b/test/cctest/compiler/test-run-machops.cc
index 50b46d7d0e288424e10ab97155590f346b6a4bf6..8d1d4c33e7661426142bafdec6b4f20981eb7ed0 100644
--- a/test/cctest/compiler/test-run-machops.cc
+++ b/test/cctest/compiler/test-run-machops.cc
@@ -4161,6 +4161,27 @@ TEST(RunInt32PairAdd) {
   }
 }
 
+TEST(RunInt32PairAddUseOnlyHighWord) {

[titzer, 2016/10/19 09:20:42]

Can you add tests for all the Int32Pair* operations?

[ahaas, 2016/10/19 09:59:19]

Done.

+  BufferedRawMachineAssemblerTester<int32_t> m(
+      MachineType::Uint32(), MachineType::Uint32(), MachineType::Uint32(),
+      MachineType::Uint32());
+
+  Node* PairAdd = m.Int32PairAdd(m.Parameter(0), m.Parameter(1), m.Parameter(2),
+                                 m.Parameter(3));
+
+  m.Return(m.Projection(1, PairAdd));
+
+  FOR_UINT64_INPUTS(i) {
+    FOR_UINT64_INPUTS(j) {
+      CHECK_EQ(static_cast<uint32_t>((*i + *j) >> 32),
+               m.Call(static_cast<uint32_t>(*i & 0xffffffff),
+                      static_cast<uint32_t>(*i >> 32),
+                      static_cast<uint32_t>(*j & 0xffffffff),
+                      static_cast<uint32_t>(*j >> 32)));
+    }
+  }
+}
+
 void TestInt32PairAddWithSharedInput(int a, int b, int c, int d) {
   BufferedRawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
                                                MachineType::Uint32());