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//===- AArch64SchedPredNeoverse.td - AArch64 Sched Preds -----*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines scheduling predicate definitions that are used by the
// AArch64 Neoverse processors.
//
//===----------------------------------------------------------------------===//
// Auxiliary predicates.
// Check for LSL shift == 0
def NeoverseNoLSL : MCSchedPredicate<
CheckAll<[CheckShiftLSL,
CheckShiftBy0]>>;
// Identify LDR/STR H/Q-form scaled (and potentially extended) FP instructions
def NeoverseHQForm : MCSchedPredicate<
CheckAll<[
CheckAny<[CheckHForm, CheckQForm]>,
CheckImmOperand<4, 1>]>>;
// Check if <Pd> == <Pg>
def NeoversePdIsPgFn : TIIPredicate<
"isNeoversePdSameAsPg",
MCOpcodeSwitchStatement<
[MCOpcodeSwitchCase<[BRKA_PPmP, BRKB_PPmP],
MCReturnStatement<CheckSameRegOperand<1, 2>>>],
MCReturnStatement<CheckSameRegOperand<0, 1>>>>;
def NeoversePdIsPg : MCSchedPredicate<NeoversePdIsPgFn>;
// Check if SVE INC/DEC (scalar), ALL, {1, 2, 4}
def NeoverseCheapIncDec : MCSchedPredicate<
CheckAll<[CheckOpcode<[
INCB_XPiI, INCH_XPiI,
INCW_XPiI, INCD_XPiI,
DECB_XPiI, DECH_XPiI,
DECW_XPiI, DECD_XPiI]>,
CheckImmOperand<2, 31>,
CheckAny<[
CheckImmOperand<3, 1>,
CheckImmOperand<3, 2>,
CheckImmOperand<3, 4>]>]>>;
// Identify "[SU]?(MADD|MSUB)L?" as the alias for "[SU]?(MUL|MNEG)L?".
def NeoverseMULIdiomPred : MCSchedPredicate< // <op> Rd, Rs, Rv, ZR
CheckAll<[CheckOpcode<
[MADDWrrr, MADDXrrr,
MSUBWrrr, MSUBXrrr,
SMADDLrrr, UMADDLrrr,
SMSUBLrrr, UMSUBLrrr]>,
CheckIsReg3Zero]>>;
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