LeonFeatures.td
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//===-- LeonFeatures.td - Describe the Leon Features -------*- 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
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// UMAC and SMAC support for LEON3 and LEON4 processors.
//===----------------------------------------------------------------------===//
//support to casa instruction; for leon3 subtarget only
def UMACSMACSupport : SubtargetFeature<
"hasumacsmac",
"HasUmacSmac",
"true",
"Enable UMAC and SMAC for LEON3 and LEON4 processors"
>;
//===----------------------------------------------------------------------===//
// CASA Support differs between LEON3-FT GR712RC and LEON3-FT UT699
// We need to have the option to switch this on and off.
//===----------------------------------------------------------------------===//
//support to casa instruction; for leon3 subtarget only
def LeonCASA : SubtargetFeature<
"hasleoncasa",
"HasLeonCasa",
"true",
"Enable CASA instruction for LEON3 and LEON4 processors"
>;
def InsertNOPLoad: SubtargetFeature<
"insertnopload",
"InsertNOPLoad",
"true",
"LEON3 erratum fix: Insert a NOP instruction after every single-cycle load instruction when the next instruction is another load/store instruction"
>;
def DetectRoundChange : SubtargetFeature<
"detectroundchange",
"DetectRoundChange",
"true",
"LEON3 erratum detection: Detects any rounding mode change "
"request: use only the round-to-nearest rounding mode"
>;
def FixAllFDIVSQRT : SubtargetFeature<
"fixallfdivsqrt",
"FixAllFDIVSQRT",
"true",
"LEON erratum fix: Fix FDIVS/FDIVD/FSQRTS/FSQRTD instructions with NOPs and floating-point store"
>;
def LeonCycleCounter
: SubtargetFeature<"leoncyclecounter", "HasLeonCycleCounter", "true",
"Use the Leon cycle counter register">;