From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- js/src/jit/x86-shared/MoveEmitter-x86-shared.h | 83 ++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 js/src/jit/x86-shared/MoveEmitter-x86-shared.h (limited to 'js/src/jit/x86-shared/MoveEmitter-x86-shared.h') diff --git a/js/src/jit/x86-shared/MoveEmitter-x86-shared.h b/js/src/jit/x86-shared/MoveEmitter-x86-shared.h new file mode 100644 index 0000000000..15a1680c9a --- /dev/null +++ b/js/src/jit/x86-shared/MoveEmitter-x86-shared.h @@ -0,0 +1,83 @@ +/* -*- 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_MoveEmitter_x86_shared_h +#define jit_MoveEmitter_x86_shared_h + +#include "mozilla/Maybe.h" + +#include +#include + +#include "jit/MoveResolver.h" +#include "jit/Registers.h" + +namespace js { +namespace jit { + +struct Address; +class MacroAssembler; +class Operand; + +class MoveEmitterX86 { + bool inCycle_; + MacroAssembler& masm; + + // Original stack push value. + uint32_t pushedAtStart_; + + // This is a store stack offset for the cycle-break spill slot, snapshotting + // codegen->framePushed_ at the time it is allocated. -1 if not allocated. + int32_t pushedAtCycle_; + +#ifdef JS_CODEGEN_X86 + // Optional scratch register for performing moves. + mozilla::Maybe scratchRegister_; +#endif + + void assertDone(); + Address cycleSlot(); + Address toAddress(const MoveOperand& operand) const; + Operand toOperand(const MoveOperand& operand) const; + Operand toPopOperand(const MoveOperand& operand) const; + + size_t characterizeCycle(const MoveResolver& moves, size_t i, + bool* allGeneralRegs, bool* allFloatRegs); + bool maybeEmitOptimizedCycle(const MoveResolver& moves, size_t i, + bool allGeneralRegs, bool allFloatRegs, + size_t swapCount); + void emitInt32Move(const MoveOperand& from, const MoveOperand& to, + const MoveResolver& moves, size_t i); + void emitGeneralMove(const MoveOperand& from, const MoveOperand& to, + const MoveResolver& moves, size_t i); + void emitFloat32Move(const MoveOperand& from, const MoveOperand& to); + void emitDoubleMove(const MoveOperand& from, const MoveOperand& to); + void emitSimd128Move(const MoveOperand& from, const MoveOperand& to); + void breakCycle(const MoveOperand& to, MoveOp::Type type); + void completeCycle(const MoveOperand& to, MoveOp::Type type); + + public: + explicit MoveEmitterX86(MacroAssembler& masm); + ~MoveEmitterX86(); + void emit(const MoveResolver& moves); + void finish(); + + void setScratchRegister(Register reg) { +#ifdef JS_CODEGEN_X86 + scratchRegister_.emplace(reg); +#endif + } + + mozilla::Maybe findScratchRegister(const MoveResolver& moves, + size_t i); +}; + +using MoveEmitter = MoveEmitterX86; + +} // namespace jit +} // namespace js + +#endif /* jit_MoveEmitter_x86_shared_h */ -- cgit v1.2.3