Bug 1498371 - Implement visitCompareBitwise. r=nbp

Fixes basic/testScriptCloning.js.

js/src/jit/arm64/CodeGenerator-arm64.cpp

@@ -954,13 +954,30 @@ CodeGenerator::visitCompareBAndBranch(LCompareBAndBranch* lir)
 void
 CodeGenerator::visitCompareBitwise(LCompareBitwise* lir)
 {
-    MOZ_CRASH("visitCompareBitwise");
+    MCompare* mir = lir->mir();
+    Assembler::Condition cond = JSOpToCondition(mir->compareType(), mir->jsop());
+    const ValueOperand lhs = ToValue(lir, LCompareBitwise::LhsInput);
+    const ValueOperand rhs = ToValue(lir, LCompareBitwise::RhsInput);
+    const Register output = ToRegister(lir->output());
+
+    MOZ_ASSERT(IsEqualityOp(mir->jsop()));
+
+    masm.cmpPtrSet(cond, lhs.valueReg(), rhs.valueReg(), output);
 }
 
 void
 CodeGenerator::visitCompareBitwiseAndBranch(LCompareBitwiseAndBranch* lir)
 {
-    MOZ_CRASH("visitCompareBitwiseAndBranch");
+    MCompare* mir = lir->cmpMir();
+    Assembler::Condition cond = JSOpToCondition(mir->compareType(), mir->jsop());
+    const ValueOperand lhs = ToValue(lir, LCompareBitwiseAndBranch::LhsInput);
+    const ValueOperand rhs = ToValue(lir, LCompareBitwiseAndBranch::RhsInput);
+
+    MOZ_ASSERT(mir->jsop() == JSOP_EQ || mir->jsop() == JSOP_STRICTEQ ||
+               mir->jsop() == JSOP_NE || mir->jsop() == JSOP_STRICTNE);
+
+    masm.cmpPtr(lhs.valueReg(), rhs.valueReg());
+    emitBranch(cond, lir->ifTrue(), lir->ifFalse());
 }
 
 void