1 //===-- LeonFeatures.td - Describe the Leon Features -------*- tablegen -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // 11 //===----------------------------------------------------------------------===// 12 13 14 //===----------------------------------------------------------------------===// 15 // UMAC and SMAC support for LEON3 and LEON4 processors. 16 //===----------------------------------------------------------------------===// 17 18 //support to casa instruction; for leon3 subtarget only 19 def UMACSMACSupport : SubtargetFeature< 20 "hasumacsmac", 21 "HasUmacSmac", 22 "true", 23 "Enable UMAC and SMAC for LEON3 and LEON4 processors" 24 >; 25 26 27 //===----------------------------------------------------------------------===// 28 // CASA Support differs between LEON3-FT GR712RC and LEON3-FT UT699 29 // We need to have the option to switch this on and off. 30 //===----------------------------------------------------------------------===// 31 32 //support to casa instruction; for leon3 subtarget only 33 def LeonCASA : SubtargetFeature< 34 "hasleoncasa", 35 "HasLeonCasa", 36 "true", 37 "Enable CASA instruction for LEON3 and LEON4 processors" 38 >; 39 40 def InsertNOPLoad: SubtargetFeature< 41 "insertnopload", 42 "InsertNOPLoad", 43 "true", 44 "LEON3 erratum fix: Insert a NOP instruction after every single-cycle load instruction when the next instruction is another load/store instruction" 45 >; 46 47 def DetectRoundChange : SubtargetFeature< 48 "detectroundchange", 49 "DetectRoundChange", 50 "true", 51 "LEON3 erratum detection: Detects any rounding mode change " 52 "request: use only the round-to-nearest rounding mode" 53 >; 54 55 def FixAllFDIVSQRT : SubtargetFeature< 56 "fixallfdivsqrt", 57 "FixAllFDIVSQRT", 58 "true", 59 "LEON erratum fix: Fix FDIVS/FDIVD/FSQRTS/FSQRTD instructions with NOPs and floating-point store" 60 >; 61
