| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| * 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_BaselineInspector_h |
| #define jit_BaselineInspector_h |
| |
| #ifdef JS_ION |
| |
| #include "jscntxt.h" |
| #include "jscompartment.h" |
| |
| #include "BaselineJIT.h" |
| #include "BaselineIC.h" |
| #include "MIR.h" |
| |
| namespace js { |
| namespace jit { |
| |
| class BaselineInspector; |
| |
| class ICInspector |
| { |
| protected: |
| BaselineInspector *inspector_; |
| jsbytecode *pc_; |
| ICEntry *icEntry_; |
| |
| ICInspector(BaselineInspector *inspector, jsbytecode *pc, ICEntry *icEntry) |
| : inspector_(inspector), pc_(pc), icEntry_(icEntry) |
| { } |
| }; |
| |
| class SetElemICInspector : public ICInspector |
| { |
| public: |
| SetElemICInspector(BaselineInspector *inspector, jsbytecode *pc, ICEntry *icEntry) |
| : ICInspector(inspector, pc, icEntry) |
| { } |
| |
| bool sawOOBDenseWrite() const; |
| bool sawOOBTypedArrayWrite() const; |
| bool sawDenseWrite() const; |
| }; |
| |
| class BaselineInspector |
| { |
| private: |
| RootedScript script; |
| ICEntry *prevLookedUpEntry; |
| |
| public: |
| BaselineInspector(JSContext *cx, JSScript *rawScript) |
| : script(cx, rawScript), prevLookedUpEntry(NULL) |
| { |
| JS_ASSERT(script); |
| } |
| |
| bool hasBaselineScript() const { |
| return script->hasBaselineScript(); |
| } |
| |
| BaselineScript *baselineScript() const { |
| return script->baselineScript(); |
| } |
| |
| private: |
| #ifdef DEBUG |
| bool isValidPC(jsbytecode *pc) { |
| return (pc >= script->code) && (pc < script->code + script->length); |
| } |
| #endif |
| |
| ICEntry &icEntryFromPC(jsbytecode *pc) { |
| JS_ASSERT(hasBaselineScript()); |
| JS_ASSERT(isValidPC(pc)); |
| ICEntry &ent = baselineScript()->icEntryFromPCOffset(pc - script->code, prevLookedUpEntry); |
| JS_ASSERT(ent.isForOp()); |
| prevLookedUpEntry = &ent; |
| return ent; |
| } |
| |
| template <typename ICInspectorType> |
| ICInspectorType makeICInspector(jsbytecode *pc, ICStub::Kind expectedFallbackKind) { |
| ICEntry *ent = NULL; |
| if (hasBaselineScript()) { |
| ent = &icEntryFromPC(pc); |
| JS_ASSERT(ent->fallbackStub()->kind() == expectedFallbackKind); |
| } |
| return ICInspectorType(this, pc, ent); |
| } |
| |
| ICStub *monomorphicStub(jsbytecode *pc); |
| bool dimorphicStub(jsbytecode *pc, ICStub **pfirst, ICStub **psecond); |
| |
| public: |
| bool maybeShapesForPropertyOp(jsbytecode *pc, Vector<Shape *> &shapes); |
| |
| SetElemICInspector setElemICInspector(jsbytecode *pc) { |
| return makeICInspector<SetElemICInspector>(pc, ICStub::SetElem_Fallback); |
| } |
| |
| MIRType expectedResultType(jsbytecode *pc); |
| MCompare::CompareType expectedCompareType(jsbytecode *pc); |
| MIRType expectedBinaryArithSpecialization(jsbytecode *pc); |
| |
| bool hasSeenNonNativeGetElement(jsbytecode *pc); |
| bool hasSeenNegativeIndexGetElement(jsbytecode *pc); |
| bool hasSeenAccessedGetter(jsbytecode *pc); |
| bool hasSeenDoubleResult(jsbytecode *pc); |
| }; |
| |
| } // namespace jit |
| } // namespace js |
| |
| #endif // JS_ION |
| |
| #endif /* jit_BaselineInspector_h */ |