[turbofan] Allow 0.0 as immediate for floating-point comparison on arm/arm64.

src/compiler/arm64/instruction-selector-arm64.cc

Index: src/compiler/arm64/instruction-selector-arm64.cc
diff --git a/src/compiler/arm64/instruction-selector-arm64.cc b/src/compiler/arm64/instruction-selector-arm64.cc
index 09c7f2fd538b16927ae5664a1d418e1e41927f3a..1d83a51de639a1b9a3487835da988a641a1d74e2 100644
--- a/src/compiler/arm64/instruction-selector-arm64.cc
+++ b/src/compiler/arm64/instruction-selector-arm64.cc
@@ -1220,10 +1220,14 @@ static void VisitWord64Test(InstructionSelector* selector, Node* node,
 static void VisitFloat64Compare(InstructionSelector* selector, Node* node,
                                 FlagsContinuation* cont) {
   Arm64OperandGenerator g(selector);
-  Node* left = node->InputAt(0);
-  Node* right = node->InputAt(1);
-  VisitCompare(selector, kArm64Float64Cmp, g.UseRegister(left),
-               g.UseRegister(right), cont);
+  Float64BinopMatcher m(node);
+  if (m.right().Is(0.0)) {
+    VisitCompare(selector, kArm64Float64Cmp, g.UseRegister(m.left().node()),
+                 g.UseImmediate(m.right().node()), cont);
+  } else {
+    VisitCompare(selector, kArm64Float64Cmp, g.UseRegister(m.left().node()),
+                 g.UseRegister(m.right().node()), cont);
+  }
 }