1 files changed, 0 insertions, 88 deletions
diff --git a/js/src/jit/PcScriptCache.h b/js/src/jit/PcScriptCache.h
deleted file mode 100644
index c83c479c85..0000000000
--- a/js/src/jit/PcScriptCache.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- * vim: set ts=8 sts=2 et sw=2 tw=80:
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef jit_PcScriptCache_h
-#define jit_PcScriptCache_h
-
-#include "mozilla/Array.h"
-#include "js/TypeDecls.h"
-#include "vm/Runtime.h"
-
-// Defines a fixed-size hash table solely for the purpose of caching
-// jit::GetPcScript(). One cache is attached to each JSRuntime; it functions as
-// if cleared on GC.
-
-namespace js {
-namespace jit {
-
-struct PcScriptCacheEntry {
-  uint8_t* returnAddress;  // Key into the hash table.
-  jsbytecode* pc;          // Cached PC.
-  JSScript* script;        // Cached script.
-};
-
-struct PcScriptCache {
- private:
-  static const uint32_t Length = 73;
-
-  // GC number at the time the cache was filled or created.
-  // Storing and checking against this number allows us to not bother
-  // clearing this cache on every GC -- only when actually necessary.
-  uint64_t gcNumber;
-
-  // List of cache entries.
-  mozilla::Array<PcScriptCacheEntry, Length> entries;
-
- public:
-  explicit PcScriptCache(uint64_t gcNumber) { clear(gcNumber); }
-
-  void clear(uint64_t gcNumber) {
-    for (uint32_t i = 0; i < Length; i++) {
-      entries[i].returnAddress = nullptr;
-    }
-    this->gcNumber = gcNumber;
-  }
-
-  // Get a value from the cache. May perform lazy allocation.
-  [[nodiscard]] bool get(JSRuntime* rt, uint32_t hash, uint8_t* addr,
-                         JSScript** scriptRes, jsbytecode** pcRes) {
-    // If a GC occurred, lazily clear the cache now.
-    if (gcNumber != rt->gc.gcNumber()) {
-      clear(rt->gc.gcNumber());
-      return false;
-    }
-
-    if (entries[hash].returnAddress != addr) {
-      return false;
-    }
-
-    *scriptRes = entries[hash].script;
-    if (pcRes) {
-      *pcRes = entries[hash].pc;
-    }
-
-    return true;
-  }
-
-  void add(uint32_t hash, uint8_t* addr, jsbytecode* pc, JSScript* script) {
-    MOZ_ASSERT(addr);
-    MOZ_ASSERT(pc);
-    MOZ_ASSERT(script);
-    entries[hash].returnAddress = addr;
-    entries[hash].pc = pc;
-    entries[hash].script = script;
-  }
-
-  static uint32_t Hash(uint8_t* addr) {
-    uint32_t key = (uint32_t)((uintptr_t)addr);
-    return ((key >> 3) * 2654435761u) % Length;
-  }
-};
-
-}  // namespace jit
-}  // namespace js
-
-#endif /* jit_PcScriptCache_h */