mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 06:30:19 +00:00
d6663f565c
This also uses TSFlags to mark machine instructions that are surface/texture accesses, as well as the vector width for surface operations. This is used to simplify some of the switch statements that need to detect surface/texture instructions git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213256 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
1.7 KiB
TableGen
60 lines
1.7 KiB
TableGen
//===- NVPTXInstrFormats.td - NVPTX Instruction Formats-------*- tblgen -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Describe NVPTX instructions format
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Vector instruction type enum
|
|
class VecInstTypeEnum<bits<4> val> {
|
|
bits<4> Value=val;
|
|
}
|
|
def VecNOP : VecInstTypeEnum<0>;
|
|
|
|
// Generic NVPTX Format
|
|
|
|
class NVPTXInst<dag outs, dag ins, string asmstr, list<dag> pattern>
|
|
: Instruction {
|
|
field bits<14> Inst;
|
|
|
|
let Namespace = "NVPTX";
|
|
dag OutOperandList = outs;
|
|
dag InOperandList = ins;
|
|
let AsmString = asmstr;
|
|
let Pattern = pattern;
|
|
|
|
// TSFlagFields
|
|
bits<4> VecInstType = VecNOP.Value;
|
|
bit IsSimpleMove = 0;
|
|
bit IsLoad = 0;
|
|
bit IsStore = 0;
|
|
|
|
bit IsTex = 0;
|
|
bit IsSust = 0;
|
|
bit IsSurfTexQuery = 0;
|
|
bit IsTexModeUnified = 0;
|
|
|
|
// The following field is encoded as log2 of the vector size minus one,
|
|
// with 0 meaning the operation is not a surface instruction. For example,
|
|
// if IsSuld == 2, then the instruction is a suld instruction with vector size
|
|
// 2**(2-1) = 2.
|
|
bits<2> IsSuld = 0;
|
|
|
|
let TSFlags{3-0} = VecInstType;
|
|
let TSFlags{4-4} = IsSimpleMove;
|
|
let TSFlags{5-5} = IsLoad;
|
|
let TSFlags{6-6} = IsStore;
|
|
let TSFlags{7} = IsTex;
|
|
let TSFlags{9-8} = IsSuld;
|
|
let TSFlags{10} = IsSust;
|
|
let TSFlags{11} = IsSurfTexQuery;
|
|
let TSFlags{12} = IsTexModeUnified;
|
|
}
|