MIPS64: Port `[turbofan] Initial support to compute NumberAdd/NumberSubstract...`

Port 0c296cb2

Change-Id: Ic90f248e05a668cfda6f6a86772dcabbc5275ec0
Reviewed-on: https://chromium-review.googlesource.com/1228034Reviewed-by: Sreten Kovacevic <skovacevic@wavecomp.com>
Commit-Queue: Sreten Kovacevic <skovacevic@wavecomp.com>
Cr-Commit-Position: refs/heads/master@{#55960}

src/compiler/mips64/instruction-selector-mips64.cc

@@ -1160,6 +1160,9 @@ void InstructionSelector::VisitChangeInt32ToFloat64(Node* node) {
   VisitRR(this, kMips64CvtDW, node);
 }
 
+void InstructionSelector::VisitChangeInt64ToFloat64(Node* node) {
+  VisitRR(this, kMips64CvtDL, node);
+}
 
 void InstructionSelector::VisitChangeUint32ToFloat64(Node* node) {
   VisitRR(this, kMips64CvtDUw, node);