//===-- LeonFeatures.td - Describe the Leon Features -------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// 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 ReplaceSDIV : SubtargetFeature<
"replacesdiv",
"PerformSDIVReplace",
"true",
"AT697E erratum fix: Do not emit SDIV, emit SDIVCC instead"
>;
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 FixFSMULD : SubtargetFeature<
"fixfsmuld",
"FixFSMULD",
"true",
"LEON erratum fix: Do not use FSMULD"
>;
def ReplaceFMULS : SubtargetFeature<
"replacefmuls",
"ReplaceFMULS",
"true",
"LEON erratum fix: Replace FMULS instruction with FMULD and relevant conversion instructions"
>;
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"
>;
