[llvm] [TableGen] Eliminate use of `convertInitializerTo` in SearchableTable (PR #109206)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-tablegen

Author: Rahul Joshi (jurahul)

<details>
<summary>Changes</summary>

Eliminate use of `convertInitializerTo` as that needs a non-const RecordKeeper (which we want to make const).

---
Full diff: https://github.com/llvm/llvm-project/pull/109206.diff


1 Files Affected:

- (modified) llvm/utils/TableGen/SearchableTableEmitter.cpp (+9-7) 


``````````diff
diff --git a/llvm/utils/TableGen/SearchableTableEmitter.cpp b/llvm/utils/TableGen/SearchableTableEmitter.cpp
index 37534fe4ca6afe..a200ef92795480 100644
--- a/llvm/utils/TableGen/SearchableTableEmitter.cpp
+++ b/llvm/utils/TableGen/SearchableTableEmitter.cpp
@@ -31,17 +31,19 @@ using namespace llvm;
 
 #define DEBUG_TYPE "searchable-table-emitter"
 
-namespace {
-
-int64_t getAsInt(Init *B) {
-  return cast<IntInit>(
-             B->convertInitializerTo(IntRecTy::get(B->getRecordKeeper())))
-      ->getValue();
+static int64_t getAsInt(const Init *B) {
+  if (const BitsInit *BI = dyn_cast<BitsInit>(B))
+    return *BI->convertInitializerToInt();
+  if (const IntInit *II = dyn_cast<IntInit>(BI))
+    return II->getValue();
+  llvm_unreachable("Unexpected initializer");
 }
-int64_t getInt(Record *R, StringRef Field) {
+
+static int64_t getInt(const Record *R, StringRef Field) {
   return getAsInt(R->getValueInit(Field));
 }
 
+namespace {
 struct GenericEnum {
   using Entry = std::pair<StringRef, int64_t>;
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/109206