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4c043c50fd
When a target instruction wants to set target-specific flags, it should simply
set bits in the TSFlags bit vector defined in the Instruction TableGen class.
This works well because TableGen resolves member references late:
class I : Instruction {
AddrMode AM = AddrModeNone;
let TSFlags{3-0} = AM.Value;
}
let AM = AddrMode4 in
def ADD : I;
TSFlags gets the expected bits from AddrMode4 in this example.
llvm-svn: 100384
47 lines
1.6 KiB
TableGen
47 lines
1.6 KiB
TableGen
//===- XCore.td - Describe the XCore Target Machine --------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Target-independent interfaces which we are implementing
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//===----------------------------------------------------------------------===//
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include "llvm/Target/Target.td"
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//===----------------------------------------------------------------------===//
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// Descriptions
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//===----------------------------------------------------------------------===//
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include "XCoreRegisterInfo.td"
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include "XCoreInstrInfo.td"
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include "XCoreCallingConv.td"
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def XCoreInstrInfo : InstrInfo;
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//===----------------------------------------------------------------------===//
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// XCore processors supported.
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//===----------------------------------------------------------------------===//
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class Proc<string Name, list<SubtargetFeature> Features>
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: Processor<Name, NoItineraries, Features>;
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def : Proc<"generic", []>;
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def : Proc<"xs1b-generic", []>;
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//===----------------------------------------------------------------------===//
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// Declare the target which we are implementing
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//===----------------------------------------------------------------------===//
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def XCore : Target {
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// Pull in Instruction Info:
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let InstructionSet = XCoreInstrInfo;
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}
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