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, 2 insertions, 2 deletions

diff --git a/source/slang/slang-ir-extract-value-from-type.cpp b/source/slang/slang-ir-extract-value-from-type.cpp
index 3019b5fd4..fa8c6e441 100644
--- a/source/slang/slang-ir-extract-value-from-type.cpp
+++ b/source/slang/slang-ir-extract-value-from-type.cpp
@@ -33,7 +33,7 @@ FindLeafValueResult findLeafValueAtOffset(
         result.offsetInValue = (uint32_t)(offset - layout.size);
         return result;
     }
-    switch (dataType->op)
+    switch (dataType->getOp())
     {
     case kIROp_StructType:
         {
@@ -125,7 +125,7 @@ FindLeafValueResult findLeafValueAtOffset(
             // Note: this code is assuming row major odering.
             auto matrixType = as<IRMatrixType>(dataType);
             auto elementType = matrixType->getElementType();
-            SLANG_RELEASE_ASSERT(matrixType->getColumnCount()->op == kIROp_IntLit);
+            SLANG_RELEASE_ASSERT(matrixType->getColumnCount()->getOp() == kIROp_IntLit);
             auto columnCount = as<IRIntLit>(matrixType->getColumnCount())->value.intVal;
             auto rowType = builder.getVectorType(elementType, matrixType->getColumnCount());
             IRSizeAndAlignment rowLayout;