ARMInstrThumb2.td

//===----------------------------------------------------------------------===//
// TLS Instructions
//

// __aeabi_read_tp preserves the registers r1-r3.
let isCall = 1,
  Defs = [R0, R12, LR, CPSR] in {
  def t2TPsoft : T2XI<(outs), (ins),
                     "bl __aeabi_read_tp",
                     [(set R0, ARMthread_pointer)]>;
}

//===----------------------------------------------------------------------===//
// Control-Flow Instructions
//

// FIXME: remove when we have a way to marking a MI with these properties.
// FIXME: $dst1 should be a def. But the extra ops must be in the end of the
// operand list.
// FIXME: Should pc be an implicit operand like PICADD, etc?
let isReturn = 1, isTerminator = 1, mayLoad = 1 in
  def t2LDM_RET : T2XI<(outs),
                    (ins addrmode4:$addr, pred:$p, reglist:$dst1, variable_ops),
                    "ldm${addr:submode}${p} $addr, $dst1",
                    []>;

let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
let isPredicable = 1 in
def t2B   : T2XI<(outs), (ins brtarget:$target),
                 "b.w $target",
                 [(br bb:$target)]>;

let isNotDuplicable = 1, isIndirectBranch = 1 in {
def t2BR_JT :
    T2JTI<(outs),
          (ins GPR:$target, GPR:$index, jt2block_operand:$jt, i32imm:$id),
          "mov pc, $target\n$jt",
          [(ARMbr2jt GPR:$target, GPR:$index, tjumptable:$jt, imm:$id)]>;

def t2TBB :
    T2I<(outs),
        (ins tb_addrmode:$index, jt2block_operand:$jt, i32imm:$id),
        "tbb", " $index\n$jt", []>;

def t2TBH :
    T2I<(outs),
        (ins tb_addrmode:$index, jt2block_operand:$jt, i32imm:$id),
        "tbh", " $index\n$jt", []>;
} // isNotDuplicable, isIndirectBranch

} // isBranch, isTerminator, isBarrier

// FIXME: should be able to write a pattern for ARMBrcond, but can't use
// a two-value operand where a dag node expects two operands. :(
let isBranch = 1, isTerminator = 1 in
def t2Bcc : T2I<(outs), (ins brtarget:$target), 
                "b", ".w $target",
                [/*(ARMbrcond bb:$target, imm:$cc)*/]>;


// IT block
def t2IT : Thumb2XI<(outs), (ins it_pred:$cc, it_mask:$mask),
                    AddrModeNone, Size2Bytes,
                    "it$mask $cc", "", []>;

//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
//

// ConstantPool, GlobalAddress, and JumpTable
def : T2Pat<(ARMWrapper  tglobaladdr :$dst), (t2LEApcrel tglobaladdr :$dst)>;
def : T2Pat<(ARMWrapper  tconstpool  :$dst), (t2LEApcrel tconstpool  :$dst)>;
def : T2Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
            (t2LEApcrelJT tjumptable:$dst, imm:$id)>;

// Large immediate handling.

def : T2Pat<(i32 imm:$src),
            (t2MOVTi16 (t2MOVi16 (t2_lo16 imm:$src)), (t2_hi16 imm:$src))>;