[Mlir-commits] [mlir] [mlir] Add `arith-int-range-narrowing` pass (PR #112404)

[Ivan Butygin]

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@@ -184,6 +189,232 @@ struct DeleteTrivialRem : public OpRewritePattern<RemOp> {
   DataFlowSolver &solver;
 };
 
+static Type checkArithType(Type type, unsigned targetBitwidth) {
+  type = getElementTypeOrSelf(type);
+  if (isa<IndexType>(type))
+    return type;
+
+  if (auto intType = dyn_cast<IntegerType>(type))
+    if (intType.getWidth() > targetBitwidth)
+      return type;
+
+  return nullptr;
+}
+
+static Type checkElementwiseOpType(Operation *op, unsigned targetBitwidth) {
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Hardcode84 wrote:

Here and later: added some comments.

https://github.com/llvm/llvm-project/pull/112404