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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit/BaselineCacheIRCompiler.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit/BaselineCacheIRCompiler.h')
-rw-r--r--js/src/jit/BaselineCacheIRCompiler.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/js/src/jit/BaselineCacheIRCompiler.h b/js/src/jit/BaselineCacheIRCompiler.h
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+/* -*- 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_BaselineCacheIRCompiler_h
+#define jit_BaselineCacheIRCompiler_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "jstypes.h"
+
+#include "jit/CacheIR.h"
+#include "jit/CacheIRCompiler.h"
+#include "jit/CacheIROpsGenerated.h"
+#include "jit/CacheIRReader.h"
+
+struct JS_PUBLIC_API JSContext;
+
+class JSScript;
+
+namespace js {
+namespace jit {
+
+class CacheIRWriter;
+class ICFallbackStub;
+class ICScript;
+class JitCode;
+class Label;
+class MacroAssembler;
+
+struct Address;
+struct Register;
+
+enum class ICAttachResult { Attached, DuplicateStub, TooLarge, OOM };
+
+bool TryFoldingStubs(JSContext* cx, ICFallbackStub* fallback, JSScript* script,
+ ICScript* icScript);
+
+ICAttachResult AttachBaselineCacheIRStub(JSContext* cx,
+ const CacheIRWriter& writer,
+ CacheKind kind, JSScript* outerScript,
+ ICScript* icScript,
+ ICFallbackStub* stub,
+ const char* name);
+
+// BaselineCacheIRCompiler compiles CacheIR to BaselineIC native code.
+class MOZ_RAII BaselineCacheIRCompiler : public CacheIRCompiler {
+ bool makesGCCalls_;
+ uint8_t localTracingSlots_ = 0;
+ Register baselineFrameReg_ = FramePointer;
+
+ // This register points to the baseline frame of the caller. It should only
+ // be used before we enter a stub frame. This is normally the frame pointer
+ // register, but with --enable-ic-frame-pointers we have to allocate a
+ // separate register.
+ inline Register baselineFrameReg() {
+ MOZ_ASSERT(!enteredStubFrame_);
+ return baselineFrameReg_;
+ }
+
+ [[nodiscard]] bool emitStoreSlotShared(bool isFixed, ObjOperandId objId,
+ uint32_t offsetOffset,
+ ValOperandId rhsId);
+ [[nodiscard]] bool emitAddAndStoreSlotShared(
+ CacheOp op, ObjOperandId objId, uint32_t offsetOffset, ValOperandId rhsId,
+ uint32_t newShapeOffset, mozilla::Maybe<uint32_t> numNewSlotsOffset);
+
+ bool updateArgc(CallFlags flags, Register argcReg, Register scratch);
+ void loadStackObject(ArgumentKind kind, CallFlags flags, Register argcReg,
+ Register dest);
+ void pushArguments(Register argcReg, Register calleeReg, Register scratch,
+ Register scratch2, CallFlags flags, uint32_t argcFixed,
+ bool isJitCall);
+ void pushStandardArguments(Register argcReg, Register scratch,
+ Register scratch2, uint32_t argcFixed,
+ bool isJitCall, bool isConstructing);
+ void pushArrayArguments(Register argcReg, Register scratch, Register scratch2,
+ bool isJitCall, bool isConstructing);
+ void pushFunCallArguments(Register argcReg, Register calleeReg,
+ Register scratch, Register scratch2,
+ uint32_t argcFixed, bool isJitCall);
+ void pushFunApplyArgsObj(Register argcReg, Register calleeReg,
+ Register scratch, Register scratch2, bool isJitCall);
+ void pushFunApplyNullUndefinedArguments(Register calleeReg, bool isJitCall);
+ void pushBoundFunctionArguments(Register argcReg, Register calleeReg,
+ Register scratch, Register scratch2,
+ CallFlags flags, uint32_t numBoundArgs,
+ bool isJitCall);
+ void createThis(Register argcReg, Register calleeReg, Register scratch,
+ CallFlags flags, bool isBoundFunction);
+ template <typename T>
+ void storeThis(const T& newThis, Register argcReg, CallFlags flags);
+ void updateReturnValue();
+
+ enum class NativeCallType { Native, ClassHook };
+ bool emitCallNativeShared(NativeCallType callType, ObjOperandId calleeId,
+ Int32OperandId argcId, CallFlags flags,
+ uint32_t argcFixed,
+ mozilla::Maybe<bool> ignoresReturnValue,
+ mozilla::Maybe<uint32_t> targetOffset);
+
+ enum class StringCode { CodeUnit, CodePoint };
+ bool emitStringFromCodeResult(Int32OperandId codeId, StringCode stringCode);
+
+ enum class StringCharOutOfBounds { Failure, EmptyString, UndefinedValue };
+ bool emitLoadStringCharResult(StringOperandId strId, Int32OperandId indexId,
+ StringCharOutOfBounds outOfBounds);
+
+ void emitAtomizeString(Register str, Register temp, Label* failure);
+
+ bool emitCallScriptedGetterShared(ValOperandId receiverId,
+ uint32_t getterOffset, bool sameRealm,
+ uint32_t nargsAndFlagsOffset,
+ mozilla::Maybe<uint32_t> icScriptOffset);
+ bool emitCallScriptedSetterShared(ObjOperandId receiverId,
+ uint32_t setterOffset, ValOperandId rhsId,
+ bool sameRealm,
+ uint32_t nargsAndFlagsOffset,
+ mozilla::Maybe<uint32_t> icScriptOffset);
+
+ template <typename IdType>
+ bool emitCallScriptedProxyGetShared(ValOperandId targetId,
+ ObjOperandId receiverId,
+ ObjOperandId handlerId,
+ uint32_t trapOffset, IdType id,
+ uint32_t nargsAndFlags);
+
+ BaselineICPerfSpewer perfSpewer_;
+
+ public:
+ BaselineICPerfSpewer& perfSpewer() { return perfSpewer_; }
+
+ friend class AutoStubFrame;
+
+ BaselineCacheIRCompiler(JSContext* cx, TempAllocator& alloc,
+ const CacheIRWriter& writer, uint32_t stubDataOffset);
+
+ [[nodiscard]] bool init(CacheKind kind);
+
+ template <typename Fn, Fn fn>
+ void callVM(MacroAssembler& masm);
+
+ JitCode* compile();
+
+ bool makesGCCalls() const;
+ bool localTracingSlots() const { return localTracingSlots_; }
+
+ Address stubAddress(uint32_t offset) const;
+
+ private:
+ CACHE_IR_COMPILER_UNSHARED_GENERATED
+};
+
+// Special object used for storing a list of shapes to guard against. These are
+// only used in the fields of CacheIR stubs and do not escape.
+class ShapeListObject : public ListObject {
+ public:
+ static const JSClass class_;
+ static const JSClassOps classOps_;
+ static ShapeListObject* create(JSContext* cx);
+ static void trace(JSTracer* trc, JSObject* obj);
+
+ Shape* get(uint32_t index);
+ bool traceWeak(JSTracer* trc);
+};
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_BaselineCacheIRCompiler_h */