path: root/lib/Target/ARM/ARMInstrThumb.td

//===- ARMInstrThumb.td - Thumb support for ARM ------------*- tablegen -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file describes the Thumb instruction set.
//
//===----------------------------------------------------------------------===//

//===----------------------------------------------------------------------===//
// Thumb specific DAG Nodes.
//

def ARMtcall : SDNode<"ARMISD::tCALL", SDT_ARMcall,
                      [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
                       SDNPVariadic]>;

def imm_neg_XFORM : SDNodeXForm<imm, [{
  return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
}]>;
def imm_comp_XFORM : SDNodeXForm<imm, [{
  return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
}]>;

/// imm0_7 predicate - True if the 32-bit immediate is in the range [0,7].
def imm0_7 : PatLeaf<(i32 imm), [{
  return (uint32_t)N->getZExtValue() < 8;
}]>;
def imm0_7_neg : PatLeaf<(i32 imm), [{
  return (uint32_t)-N->getZExtValue() < 8;
}], imm_neg_XFORM>;

def imm0_255 : PatLeaf<(i32 imm), [{
  return (uint32_t)N->getZExtValue() < 256;
}]>;
def imm0_255_comp : PatLeaf<(i32 imm), [{
  return ~((uint32_t)N->getZExtValue()) < 256;
}]>;

def imm8_255 : PatLeaf<(i32 imm), [{
  return (uint32_t)N->getZExtValue() >= 8 && (uint32_t)N->getZExtValue() < 256;
}]>;
def imm8_255_neg : PatLeaf<(i32 imm), [{
  unsigned Val = -N->getZExtValue();