MIPS[64]: Disable Add/Shl to Lsa optimization if operand is immediate

src/compiler/mips/instruction-selector-mips.cc

Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index 1e4b996531d6e3152e3954ba65a55b67043f5486..a8aa7c17c5840ba6c54a15a6ed9da003f4b7c2a1 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -652,7 +652,7 @@ void InstructionSelector::VisitInt32Add(Node* node) {
   if (m.right().opcode() == IrOpcode::kWord32Shl &&
       CanCover(node, m.left().node()) && CanCover(node, m.right().node())) {
     Int32BinopMatcher mright(m.right().node());
-    if (mright.right().HasValue()) {
+    if (mright.right().HasValue() && !m.left().HasValue()) {
       int32_t shift_value = static_cast<int32_t>(mright.right().Value());
       Emit(kMipsLsa, g.DefineAsRegister(node), g.UseRegister(m.left().node()),
            g.UseRegister(mright.left().node()), g.TempImmediate(shift_value));
@@ -664,7 +664,7 @@ void InstructionSelector::VisitInt32Add(Node* node) {
   if (m.left().opcode() == IrOpcode::kWord32Shl &&
       CanCover(node, m.right().node()) && CanCover(node, m.left().node())) {
     Int32BinopMatcher mleft(m.left().node());
-    if (mleft.right().HasValue()) {
+    if (mleft.right().HasValue() && !m.right().HasValue()) {
       int32_t shift_value = static_cast<int32_t>(mleft.right().Value());
       Emit(kMipsLsa, g.DefineAsRegister(node), g.UseRegister(m.right().node()),
            g.UseRegister(mleft.left().node()), g.TempImmediate(shift_value));