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0d1db6a0b0
With the TAG_VECTOR change, we can now confidently distinguish cases when the .w component contains TVECTOR tag from cases where it doesn't: loads and tag ops produce the tag, whereas other instructions don't. We now take advantage of this fact and only apply vandps with a mask when we need to. It would be possible to use a positive filter (explicitly checking for source coming from ADD_VEC et al), but there are more instructions to check this way and this is purely an optimization so it is allowed to be conservative (as in, the cost of a mistake here is a potential slowdown, not a correctness issue).
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/AssemblyBuilderX64.h"
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#include "Luau/DenseHash.h"
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#include "Luau/IrData.h"
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#include "Luau/IrRegAllocX64.h"
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#include "IrValueLocationTracking.h"
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#include <vector>
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struct Proto;
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namespace Luau
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{
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namespace CodeGen
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{
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struct ModuleHelpers;
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struct AssemblyOptions;
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struct LoweringStats;
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namespace X64
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{
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struct IrLoweringX64
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{
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IrLoweringX64(AssemblyBuilderX64& build, ModuleHelpers& helpers, IrFunction& function, LoweringStats* stats);
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void lowerInst(IrInst& inst, uint32_t index, const IrBlock& next);
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void finishBlock(const IrBlock& curr, const IrBlock& next);
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void finishFunction();
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bool hasError() const;
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bool isFallthroughBlock(const IrBlock& target, const IrBlock& next);
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void jumpOrFallthrough(IrBlock& target, const IrBlock& next);
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Label& getTargetLabel(IrOp op, Label& fresh);
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void finalizeTargetLabel(IrOp op, Label& fresh);
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void jumpOrAbortOnUndef(ConditionX64 cond, IrOp target, const IrBlock& next);
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void jumpOrAbortOnUndef(IrOp target, const IrBlock& next);
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void storeDoubleAsFloat(OperandX64 dst, IrOp src);
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// Operand data lookup helpers
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OperandX64 memRegDoubleOp(IrOp op);
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OperandX64 memRegUintOp(IrOp op);
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OperandX64 memRegTagOp(IrOp op);
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RegisterX64 regOp(IrOp op);
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OperandX64 bufferAddrOp(IrOp bufferOp, IrOp indexOp);
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RegisterX64 vecOp(IrOp op, ScopedRegX64& tmp);
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IrConst constOp(IrOp op) const;
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uint8_t tagOp(IrOp op) const;
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int intOp(IrOp op) const;
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unsigned uintOp(IrOp op) const;
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double doubleOp(IrOp op) const;
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IrBlock& blockOp(IrOp op) const;
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Label& labelOp(IrOp op) const;
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OperandX64 vectorAndMaskOp();
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OperandX64 vectorOrMaskOp();
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struct InterruptHandler
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{
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Label self;
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unsigned int pcpos;
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Label next;
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};
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struct ExitHandler
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{
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Label self;
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unsigned int pcpos;
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};
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AssemblyBuilderX64& build;
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ModuleHelpers& helpers;
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IrFunction& function;
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LoweringStats* stats = nullptr;
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IrRegAllocX64 regs;
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IrValueLocationTracking valueTracker;
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std::vector<InterruptHandler> interruptHandlers;
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std::vector<ExitHandler> exitHandlers;
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DenseHashMap<uint32_t, uint32_t> exitHandlerMap;
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OperandX64 vectorAndMask = noreg;
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OperandX64 vectorOrMask = noreg;
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};
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} // namespace X64
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} // namespace CodeGen
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} // namespace Luau
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