Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 105 insertions, 0 deletions

diff --git a/js/src/jit/IonCacheIRCompiler.h b/js/src/jit/IonCacheIRCompiler.h
new file mode 100644
index 0000000000..62a4399046
--- /dev/null
+++ b/js/src/jit/IonCacheIRCompiler.h
@@ -0,0 +1,105 @@
+/* -*- 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_IonCacheIRCompiler_h
+#define jit_IonCacheIRCompiler_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+
+#include <stdint.h>
+
+#include "jstypes.h"
+
+#include "jit/CacheIR.h"
+#include "jit/CacheIRCompiler.h"
+#include "jit/CacheIROpsGenerated.h"
+#include "jit/CacheIRReader.h"
+#include "jit/Registers.h"
+#include "jit/RegisterSets.h"
+#include "js/Vector.h"
+
+struct JS_PUBLIC_API JSContext;
+
+namespace js {
+namespace jit {
+
+class CacheIRWriter;
+class CodeOffset;
+class IonIC;
+class IonICStub;
+class IonScript;
+class JitCode;
+class MacroAssembler;
+
+// IonCacheIRCompiler compiles CacheIR to IonIC native code.
+class MOZ_RAII IonCacheIRCompiler : public CacheIRCompiler {
+ public:
+  friend class AutoSaveLiveRegisters;
+  friend class AutoCallVM;
+
+  IonCacheIRCompiler(JSContext* cx, TempAllocator& alloc,
+                     const CacheIRWriter& writer, IonIC* ic,
+                     IonScript* ionScript, uint32_t stubDataOffset);
+
+  [[nodiscard]] bool init();
+  JitCode* compile(IonICStub* stub);
+
+#ifdef DEBUG
+  void assertFloatRegisterAvailable(FloatRegister reg);
+#endif
+
+  IonICPerfSpewer& perfSpewer() { return perfSpewer_; }
+  uint8_t localTracingSlots() const { return localTracingSlots_; }
+
+ private:
+  const CacheIRWriter& writer_;
+  IonIC* ic_;
+  IonScript* ionScript_;
+
+  Vector<CodeOffset, 4, SystemAllocPolicy> nextCodeOffsets_;
+  mozilla::Maybe<LiveRegisterSet> liveRegs_;
+  mozilla::Maybe<CodeOffset> stubJitCodeOffset_;
+
+  bool savedLiveRegs_;
+  uint8_t localTracingSlots_;
+
+  IonICPerfSpewer perfSpewer_;
+
+  template <typename T>
+  T rawPointerStubField(uint32_t offset);
+
+  template <typename T>
+  T rawInt64StubField(uint32_t offset);
+
+  void enterStubFrame(MacroAssembler& masm, const AutoSaveLiveRegisters&);
+  void storeTracedValue(MacroAssembler& masm, ValueOperand value);
+  void loadTracedValue(MacroAssembler& masm, uint8_t slotIndex,
+                       ValueOperand value);
+
+  template <typename Fn, Fn fn>
+  void callVM(MacroAssembler& masm);
+
+  [[nodiscard]] bool emitAddAndStoreSlotShared(
+      CacheOp op, ObjOperandId objId, uint32_t offsetOffset, ValOperandId rhsId,
+      uint32_t newShapeOffset, mozilla::Maybe<uint32_t> numNewSlotsOffset);
+
+  template <typename IdType>
+  [[nodiscard]] bool emitCallScriptedProxyGetShared(ValOperandId targetId,
+                                                    ObjOperandId receiverId,
+                                                    ObjOperandId handlerId,
+                                                    uint32_t trapOffset,
+                                                    IdType id);
+
+  void pushStubCodePointer();
+
+  CACHE_IR_COMPILER_UNSHARED_GENERATED
+};
+
+}  // namespace jit
+}  // namespace js
+
+#endif /* jit_IonCacheIRCompiler_h */