Add an accessor for IRInst opcode (#1707)

* Add an accessor for IRInst opcode

This main changing is renaming `IRInst::op` over to `IRInst::m_op` and then adds an accessor `IRInst::getOp()` to read it. The rest of the changes are just changing use sites to `getOp` (or to `m_op` in the limited cases where we write to it).

This work is in anticipation of a future change that might need to store an extra bit in the same field as the opcode. It seemed better to do this massive refactoring as a separate PR.

* fixup

1 files changed, 3 insertions, 3 deletions

diff --git a/source/slang/slang-lower-to-ir.cpp b/source/slang/slang-lower-to-ir.cpp
index f0066b543..9b1c4b1a6 100644
--- a/source/slang/slang-lower-to-ir.cpp
+++ b/source/slang/slang-lower-to-ir.cpp
@@ -5963,7 +5963,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
         for (auto constraintDecl : decl->getMembersOfType<GenericTypeConstraintDecl>())
         {
             auto baseType = lowerType(context, constraintDecl->sup.type);
-            SLANG_ASSERT(baseType && baseType->op == kIROp_InterfaceType);
+            SLANG_ASSERT(baseType && baseType->getOp() == kIROp_InterfaceType);
             constraintInterfaces.add((IRInterfaceType*)baseType);
         }
         auto assocType = context->irBuilder->getAssociatedType(
@@ -6039,7 +6039,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
             IRInst* requirementVal = ensureDecl(subContext, requirementDecl).val;
             if (requirementVal)
             {
-                switch (requirementVal->op)
+                switch (requirementVal->getOp())
                 {
                 case kIROp_Func:
                 case kIROp_Generic:
@@ -8038,7 +8038,7 @@ struct SpecializedComponentTypeIRGenContext : ComponentTypeVisitor
                     auto irType = lowerSimpleVal(context, specializationArg.val);
                     auto irWitness = lowerSimpleVal(context, specializationArg.witness);
 
-                    if (irType->op != kIROp_DynamicType)
+                    if (irType->getOp() != kIROp_DynamicType)
                         hasConcreteTypeArg = true;
 
                     irSlotArgs.add(irType);