[wasm] Implement I32x4ReplaceLane, I32x4Add, I32x4Sub.

src/compiler/common-operator.cc

Index: src/compiler/common-operator.cc
diff --git a/src/compiler/common-operator.cc b/src/compiler/common-operator.cc
index 9ce6f71a0f9949bb9b4ddc04ee2e76ed1e2f413f..c03ac4fd71ecbeb4c398f9b3d7b4589abbf8afc6 100644
--- a/src/compiler/common-operator.cc
+++ b/src/compiler/common-operator.cc
@@ -1131,6 +1131,29 @@ const Operator* CommonOperatorBuilder::ResizeMergeOrPhi(const Operator* op,
   }
 }
 
+const Operator* CommonOperatorBuilder::Int32x4ExtractLane(int32_t value) {

[titzer, 2016/12/05 09:40:08]

Can we call this lane_number?

[gdeepti, 2016/12/06 01:10:08]

Done.

+  return new (zone()) Operator1<int32_t>(              // --

[titzer, 2016/12/05 09:40:08]

Can we get a DCHECK that 0 <= lane_number < 4?

[gdeepti, 2016/12/06 01:10:08]

Done.

+      IrOpcode::kInt32x4ExtractLane, Operator::kPure,  // opcode
+      "Int32x4ExtractLane",                            // name
+      1, 0, 0, 1, 0, 0,                                // counts
+      value);                                          // parameter
+}
+
+const Operator* CommonOperatorBuilder::Int32x4ReplaceLane(int32_t value) {
+  return new (zone()) Operator1<int32_t>(              // --
+      IrOpcode::kInt32x4ReplaceLane, Operator::kPure,  // opcode
+      "Int32x4ReplaceLane",                            // name
+      2, 0, 0, 1, 0, 0,                                // counts
+      value);                                          // parameter
+}
+
+const Operator* CommonOperatorBuilder::Float32x4ExtractLane(int32_t value) {
+  return new (zone()) Operator1<int32_t>(                // --
+      IrOpcode::kFloat32x4ExtractLane, Operator::kPure,  // opcode
+      "Float32x4ExtractLane",                            // name
+      1, 0, 0, 1, 0, 0,                                  // counts
+      value);                                            // parameter
+}
 
 const FrameStateFunctionInfo*
 CommonOperatorBuilder::CreateFrameStateFunctionInfo(