think this user iterator will work

src/shader_recompiler/ir/value.h

@@ -11,6 +11,8 @@
 #include <boost/container/list.hpp>
 #include <boost/container/small_vector.hpp>
 #include <boost/intrusive/list.hpp>
+#include <boost/range/adaptors.hpp>
+#include <boost/range/algorithm/unique.hpp>
 
 #include "common/assert.h"
 #include "shader_recompiler/exception.h"
@@ -211,6 +213,21 @@ public:
         return std::bit_cast<DefinitionType>(definition);
     }
 
+    auto users() {
+        return boost::adaptors::transform(
+            boost::unique(uses,
+                          [](const IR::Use& a, const IR::Use& b) { return a.user == b.user; }),
+            [](const IR::Use& use) { return use.user; });
+    }
+
+    auto user_begin() {
+        return users().begin();
+    }
+
+    auto user_end() {
+        return users().end();
+    }
+
 private:
     struct NonTriviallyDummy {
         NonTriviallyDummy() noexcept {}