[llvm] [Analysis][ValueTracking] Unify most of the tracking between AssumptionCache and DomConditionCache (PR #83161)

[Nikita Popov via llvm-commits]

================
@@ -0,0 +1,118 @@
+//===- llvm/Analysis/ConditionCacheUtil.h -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Shared by DomConditionCache and AssumptionCache. Holds common operation of
+// finding values potentially affected by an assumed/branched on condition.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_CONDITIONCACHEUTIL_H
+#define LLVM_ANALYSIS_CONDITIONCACHEUTIL_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/IR/PatternMatch.h"
+#include <functional>
+
+namespace llvm {
+
+static void addValueAffectedByCondition(
+    Value *V, std::function<void(Value *, int)> InsertAffected, int Idx = -1) {
----------------
nikic wrote:

Use function_ref instead. Maybe that will help with compile-time.

https://github.com/llvm/llvm-project/pull/83161