Bug 1768648 - Part 1: Compare Compare_RefOrNull as pointers. r=rhunt

Differential Revision: https://phabricator.services.mozilla.com/D152631

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

@@ -102,7 +102,8 @@ void CodeGenerator::visitCompare(LCompare* comp) {
   const Register defreg = ToRegister(comp->getDef(0));
 
   if (type == MCompare::Compare_Object || type == MCompare::Compare_Symbol ||
-      type == MCompare::Compare_UIntPtr) {
+      type == MCompare::Compare_UIntPtr ||
+      type == MCompare::Compare_RefOrNull) {
     if (right->isConstant()) {
       MOZ_ASSERT(type == MCompare::Compare_UIntPtr);
       masm.cmpPtrSet(cond, leftreg, Imm32(ToInt32(right)), defreg);

js/src/jit/loong64/CodeGenerator-loong64.cpp

@@ -465,7 +465,8 @@ void CodeGenerator::visitCompare(LCompare* comp) {
 
   if (mir->compareType() == MCompare::Compare_Object ||
       mir->compareType() == MCompare::Compare_Symbol ||
-      mir->compareType() == MCompare::Compare_UIntPtr) {
+      mir->compareType() == MCompare::Compare_UIntPtr ||
+      mir->compareType() == MCompare::Compare_RefOrNull) {
     if (right->isConstant()) {
       MOZ_ASSERT(mir->compareType() == MCompare::Compare_UIntPtr);
       masm.cmpPtrSet(cond, ToRegister(left), Imm32(ToInt32(right)),

js/src/jit/mips-shared/CodeGenerator-mips-shared.cpp

@@ -105,7 +105,8 @@ void CodeGenerator::visitCompare(LCompare* comp) {
 #ifdef JS_CODEGEN_MIPS64
   if (mir->compareType() == MCompare::Compare_Object ||
       mir->compareType() == MCompare::Compare_Symbol ||
-      mir->compareType() == MCompare::Compare_UIntPtr) {
+      mir->compareType() == MCompare::Compare_UIntPtr ||
+      mir->compareType() == MCompare::Compare_RefOrNull) {
     if (right->isConstant()) {
       MOZ_ASSERT(mir->compareType() == MCompare::Compare_UIntPtr);
       masm.cmpPtrSet(cond, ToRegister(left), Imm32(ToInt32(right)),

js/src/jit/x86-shared/CodeGenerator-x86-shared.cpp

@@ -122,7 +122,8 @@ void CodeGeneratorX86Shared::emitCompare(MCompare::CompareType type,
                                          const LAllocation* right) {
 #ifdef JS_CODEGEN_X64
   if (type == MCompare::Compare_Object || type == MCompare::Compare_Symbol ||
-      type == MCompare::Compare_UIntPtr) {
+      type == MCompare::Compare_UIntPtr ||
+      type == MCompare::Compare_RefOrNull) {
     if (right->isConstant()) {
       MOZ_ASSERT(type == MCompare::Compare_UIntPtr);
       masm.cmpPtr(ToRegister(left), Imm32(ToInt32(right)));