| //===-- 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">; |