mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-23 16:30:00 +00:00
f5fd499791
immediate instructions cannot set the condition codes, so they do not have the extra cc_out operand. We hit an assertion during tail duplication because the instruction being duplicated had more operands that expected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98001 91177308-0d34-0410-b5e6-96231b3b80d8
2663 lines
99 KiB
TableGen
2663 lines
99 KiB
TableGen
//===- ARMInstrThumb2.td - Thumb2 support for ARM -------------------------===//
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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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// This file describes the Thumb2 instruction set.
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//
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//===----------------------------------------------------------------------===//
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// IT block predicate field
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def it_pred : Operand<i32> {
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let PrintMethod = "printMandatoryPredicateOperand";
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}
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// IT block condition mask
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def it_mask : Operand<i32> {
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let PrintMethod = "printThumbITMask";
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}
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// Table branch address
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def tb_addrmode : Operand<i32> {
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let PrintMethod = "printTBAddrMode";
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}
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// Shifted operands. No register controlled shifts for Thumb2.
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// Note: We do not support rrx shifted operands yet.
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def t2_so_reg : Operand<i32>, // reg imm
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ComplexPattern<i32, 2, "SelectT2ShifterOperandReg",
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[shl,srl,sra,rotr]> {
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let PrintMethod = "printT2SOOperand";
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let MIOperandInfo = (ops GPR, i32imm);
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}
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// t2_so_imm_not_XFORM - Return the complement of a t2_so_imm value
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def t2_so_imm_not_XFORM : SDNodeXForm<imm, [{
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return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
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}]>;
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// t2_so_imm_neg_XFORM - Return the negation of a t2_so_imm value
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def t2_so_imm_neg_XFORM : SDNodeXForm<imm, [{
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return CurDAG->getTargetConstant(-((int)N->getZExtValue()), MVT::i32);
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}]>;
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// t2_so_imm - Match a 32-bit immediate operand, which is an
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// 8-bit immediate rotated by an arbitrary number of bits, or an 8-bit
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// immediate splatted into multiple bytes of the word. t2_so_imm values are
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// represented in the imm field in the same 12-bit form that they are encoded
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// into t2_so_imm instructions: the 8-bit immediate is the least significant
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// bits [bits 0-7], the 4-bit shift/splat amount is the next 4 bits [bits 8-11].
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def t2_so_imm : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::getT2SOImmVal((uint32_t)N->getZExtValue()) != -1;
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}]>;
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// t2_so_imm_not - Match an immediate that is a complement
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// of a t2_so_imm.
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def t2_so_imm_not : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::getT2SOImmVal(~((uint32_t)N->getZExtValue())) != -1;
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}], t2_so_imm_not_XFORM>;
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// t2_so_imm_neg - Match an immediate that is a negation of a t2_so_imm.
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def t2_so_imm_neg : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::getT2SOImmVal(-((int)N->getZExtValue())) != -1;
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}], t2_so_imm_neg_XFORM>;
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// Break t2_so_imm's up into two pieces. This handles immediates with up to 16
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// bits set in them. This uses t2_so_imm2part to match and t2_so_imm2part_[12]
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// to get the first/second pieces.
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def t2_so_imm2part : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::isT2SOImmTwoPartVal((unsigned)N->getZExtValue());
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}]> {
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}
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def t2_so_imm2part_1 : SDNodeXForm<imm, [{
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unsigned V = ARM_AM::getT2SOImmTwoPartFirst((unsigned)N->getZExtValue());
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return CurDAG->getTargetConstant(V, MVT::i32);
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}]>;
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def t2_so_imm2part_2 : SDNodeXForm<imm, [{
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unsigned V = ARM_AM::getT2SOImmTwoPartSecond((unsigned)N->getZExtValue());
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return CurDAG->getTargetConstant(V, MVT::i32);
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}]>;
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def t2_so_neg_imm2part : Operand<i32>, PatLeaf<(imm), [{
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return ARM_AM::isT2SOImmTwoPartVal(-(int)N->getZExtValue());
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}]> {
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}
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def t2_so_neg_imm2part_1 : SDNodeXForm<imm, [{
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unsigned V = ARM_AM::getT2SOImmTwoPartFirst(-(int)N->getZExtValue());
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return CurDAG->getTargetConstant(V, MVT::i32);
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}]>;
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def t2_so_neg_imm2part_2 : SDNodeXForm<imm, [{
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unsigned V = ARM_AM::getT2SOImmTwoPartSecond(-(int)N->getZExtValue());
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return CurDAG->getTargetConstant(V, MVT::i32);
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}]>;
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/// imm1_31 predicate - True if the 32-bit immediate is in the range [1,31].
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def imm1_31 : PatLeaf<(i32 imm), [{
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return (int32_t)N->getZExtValue() >= 1 && (int32_t)N->getZExtValue() < 32;
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}]>;
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/// imm0_4095 predicate - True if the 32-bit immediate is in the range [0.4095].
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def imm0_4095 : Operand<i32>,
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PatLeaf<(i32 imm), [{
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return (uint32_t)N->getZExtValue() < 4096;
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}]>;
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def imm0_4095_neg : PatLeaf<(i32 imm), [{
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return (uint32_t)(-N->getZExtValue()) < 4096;
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}], imm_neg_XFORM>;
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def imm0_255_neg : PatLeaf<(i32 imm), [{
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return (uint32_t)(-N->getZExtValue()) < 255;
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}], imm_neg_XFORM>;
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// Define Thumb2 specific addressing modes.
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// t2addrmode_imm12 := reg + imm12
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def t2addrmode_imm12 : Operand<i32>,
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ComplexPattern<i32, 2, "SelectT2AddrModeImm12", []> {
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let PrintMethod = "printT2AddrModeImm12Operand";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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}
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// t2addrmode_imm8 := reg +/- imm8
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def t2addrmode_imm8 : Operand<i32>,
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ComplexPattern<i32, 2, "SelectT2AddrModeImm8", []> {
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let PrintMethod = "printT2AddrModeImm8Operand";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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}
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def t2am_imm8_offset : Operand<i32>,
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ComplexPattern<i32, 1, "SelectT2AddrModeImm8Offset", []>{
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let PrintMethod = "printT2AddrModeImm8OffsetOperand";
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}
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// t2addrmode_imm8s4 := reg +/- (imm8 << 2)
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def t2addrmode_imm8s4 : Operand<i32>,
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ComplexPattern<i32, 2, "SelectT2AddrModeImm8s4", []> {
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let PrintMethod = "printT2AddrModeImm8s4Operand";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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}
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// t2addrmode_so_reg := reg + (reg << imm2)
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def t2addrmode_so_reg : Operand<i32>,
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ComplexPattern<i32, 3, "SelectT2AddrModeSoReg", []> {
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let PrintMethod = "printT2AddrModeSoRegOperand";
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let MIOperandInfo = (ops GPR:$base, GPR:$offsreg, i32imm:$offsimm);
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}
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//===----------------------------------------------------------------------===//
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// Multiclass helpers...
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//
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/// T2I_un_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
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/// unary operation that produces a value. These are predicable and can be
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/// changed to modify CPSR.
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multiclass T2I_un_irs<bits<4> opcod, string opc, PatFrag opnode,
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bit Cheap = 0, bit ReMat = 0> {
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// shifted imm
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def i : T2sI<(outs GPR:$dst), (ins t2_so_imm:$src), IIC_iMOVi,
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opc, "\t$dst, $src",
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[(set GPR:$dst, (opnode t2_so_imm:$src))]> {
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let isAsCheapAsAMove = Cheap;
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let isReMaterializable = ReMat;
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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let Inst{19-16} = 0b1111; // Rn
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let Inst{15} = 0;
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}
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// register
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def r : T2I<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
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opc, ".w\t$dst, $src",
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[(set GPR:$dst, (opnode GPR:$src))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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let Inst{19-16} = 0b1111; // Rn
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let Inst{14-12} = 0b000; // imm3
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let Inst{7-6} = 0b00; // imm2
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let Inst{5-4} = 0b00; // type
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}
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// shifted register
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def s : T2I<(outs GPR:$dst), (ins t2_so_reg:$src), IIC_iMOVsi,
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opc, ".w\t$dst, $src",
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[(set GPR:$dst, (opnode t2_so_reg:$src))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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let Inst{19-16} = 0b1111; // Rn
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}
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}
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/// T2I_bin_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
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// binary operation that produces a value. These are predicable and can be
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/// changed to modify CPSR.
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multiclass T2I_bin_irs<bits<4> opcod, string opc, PatFrag opnode,
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bit Commutable = 0, string wide =""> {
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// shifted imm
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def ri : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iALUi,
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opc, "\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_imm:$rhs))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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let Inst{15} = 0;
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}
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// register
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def rr : T2sI<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
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opc, !strconcat(wide, "\t$dst, $lhs, $rhs"),
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[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]> {
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let isCommutable = Commutable;
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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let Inst{14-12} = 0b000; // imm3
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let Inst{7-6} = 0b00; // imm2
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let Inst{5-4} = 0b00; // type
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}
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// shifted register
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def rs : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iALUsi,
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opc, !strconcat(wide, "\t$dst, $lhs, $rhs"),
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_reg:$rhs))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = ?; // The S bit.
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}
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}
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/// T2I_bin_w_irs - Same as T2I_bin_irs except these operations need
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// the ".w" prefix to indicate that they are wide.
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multiclass T2I_bin_w_irs<bits<4> opcod, string opc, PatFrag opnode,
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bit Commutable = 0> :
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T2I_bin_irs<opcod, opc, opnode, Commutable, ".w">;
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/// T2I_rbin_is - Same as T2I_bin_irs except the order of operands are
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/// reversed. It doesn't define the 'rr' form since it's handled by its
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/// T2I_bin_irs counterpart.
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multiclass T2I_rbin_is<bits<4> opcod, string opc, PatFrag opnode> {
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// shifted imm
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def ri : T2I<(outs GPR:$dst), (ins GPR:$rhs, t2_so_imm:$lhs), IIC_iALUi,
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opc, ".w\t$dst, $rhs, $lhs",
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[(set GPR:$dst, (opnode t2_so_imm:$lhs, GPR:$rhs))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = opcod;
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let Inst{20} = 0; // The S bit.
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let Inst{15} = 0;
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}
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// shifted register
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def rs : T2I<(outs GPR:$dst), (ins GPR:$rhs, t2_so_reg:$lhs), IIC_iALUsi,
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opc, "\t$dst, $rhs, $lhs",
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[(set GPR:$dst, (opnode t2_so_reg:$lhs, GPR:$rhs))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = 0; // The S bit.
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}
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}
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/// T2I_bin_s_irs - Similar to T2I_bin_irs except it sets the 's' bit so the
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/// instruction modifies the CPSR register.
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let Defs = [CPSR] in {
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multiclass T2I_bin_s_irs<bits<4> opcod, string opc, PatFrag opnode,
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bit Commutable = 0> {
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// shifted imm
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def ri : T2I<(outs GPR:$dst), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iALUi,
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!strconcat(opc, "s"), ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_imm:$rhs))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = opcod;
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let Inst{20} = 1; // The S bit.
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let Inst{15} = 0;
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}
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// register
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def rr : T2I<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
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!strconcat(opc, "s"), ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]> {
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let isCommutable = Commutable;
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = 1; // The S bit.
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let Inst{14-12} = 0b000; // imm3
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let Inst{7-6} = 0b00; // imm2
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let Inst{5-4} = 0b00; // type
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}
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// shifted register
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def rs : T2I<(outs GPR:$dst), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iALUsi,
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!strconcat(opc, "s"), ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_reg:$rhs))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = opcod;
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let Inst{20} = 1; // The S bit.
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}
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}
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}
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/// T2I_bin_ii12rs - Defines a set of (op reg, {so_imm|imm0_4095|r|so_reg})
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/// patterns for a binary operation that produces a value.
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multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
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bit Commutable = 0> {
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// shifted imm
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def ri : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iALUi,
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opc, ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_imm:$rhs))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24} = 1;
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let Inst{23-21} = op23_21;
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let Inst{20} = 0; // The S bit.
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let Inst{15} = 0;
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}
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// 12-bit imm
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def ri12 : T2I<(outs GPR:$dst), (ins GPR:$lhs, imm0_4095:$rhs), IIC_iALUi,
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!strconcat(opc, "w"), "\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, imm0_4095:$rhs))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 1;
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let Inst{24} = 0;
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let Inst{23-21} = op23_21;
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let Inst{20} = 0; // The S bit.
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let Inst{15} = 0;
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}
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// register
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def rr : T2sI<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
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opc, ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]> {
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let isCommutable = Commutable;
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24} = 1;
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let Inst{23-21} = op23_21;
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let Inst{20} = 0; // The S bit.
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let Inst{14-12} = 0b000; // imm3
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let Inst{7-6} = 0b00; // imm2
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let Inst{5-4} = 0b00; // type
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}
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// shifted register
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def rs : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iALUsi,
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opc, ".w\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_reg:$rhs))]> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24} = 1;
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let Inst{23-21} = op23_21;
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let Inst{20} = 0; // The S bit.
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}
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}
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/// T2I_adde_sube_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns
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/// for a binary operation that produces a value and use the carry
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/// bit. It's not predicable.
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let Uses = [CPSR] in {
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multiclass T2I_adde_sube_irs<bits<4> opcod, string opc, PatFrag opnode,
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bit Commutable = 0> {
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// shifted imm
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def ri : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iALUi,
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opc, "\t$dst, $lhs, $rhs",
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[(set GPR:$dst, (opnode GPR:$lhs, t2_so_imm:$rhs))]>,
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Requires<[IsThumb2]> {
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let Inst{31-27} = 0b11110;
|
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let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2sI<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]>,
|
|
Requires<[IsThumb2]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iALUsi,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, t2_so_reg:$rhs))]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 0; // The S bit.
|
|
}
|
|
}
|
|
|
|
// Carry setting variants
|
|
let Defs = [CPSR] in {
|
|
multiclass T2I_adde_sube_s_irs<bits<4> opcod, string opc, PatFrag opnode,
|
|
bit Commutable = 0> {
|
|
// shifted imm
|
|
def ri : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iALUi,
|
|
opc, "\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, t2_so_imm:$rhs))]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2sI<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]>,
|
|
Requires<[IsThumb2]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sI<(outs GPR:$dst), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iALUsi,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, t2_so_reg:$rhs))]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_rbin_s_is - Same as T2I_rbin_is except sets 's' bit.
|
|
let Defs = [CPSR] in {
|
|
multiclass T2I_rbin_s_is<bits<4> opcod, string opc, PatFrag opnode> {
|
|
// shifted imm
|
|
def ri : T2XI<(outs GPR:$dst), (ins GPR:$rhs, t2_so_imm:$lhs, cc_out:$s),
|
|
IIC_iALUi,
|
|
!strconcat(opc, "${s}.w\t$dst, $rhs, $lhs"),
|
|
[(set GPR:$dst, (opnode t2_so_imm:$lhs, GPR:$rhs))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
}
|
|
// shifted register
|
|
def rs : T2XI<(outs GPR:$dst), (ins GPR:$rhs, t2_so_reg:$lhs, cc_out:$s),
|
|
IIC_iALUsi,
|
|
!strconcat(opc, "${s}\t$dst, $rhs, $lhs"),
|
|
[(set GPR:$dst, (opnode t2_so_reg:$lhs, GPR:$rhs))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_sh_ir - Defines a set of (op reg, {so_imm|r}) patterns for a shift /
|
|
// rotate operation that produces a value.
|
|
multiclass T2I_sh_ir<bits<2> opcod, string opc, PatFrag opnode> {
|
|
// 5-bit imm
|
|
def ri : T2sI<(outs GPR:$dst), (ins GPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, imm1_31:$rhs))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-21} = 0b010010;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = opcod;
|
|
}
|
|
// register
|
|
def rr : T2sI<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iMOVsr,
|
|
opc, ".w\t$dst, $lhs, $rhs",
|
|
[(set GPR:$dst, (opnode GPR:$lhs, GPR:$rhs))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
}
|
|
|
|
/// T2I_cmp_irs - Defines a set of (op r, {so_imm|r|so_reg}) cmp / test
|
|
/// patterns. Similar to T2I_bin_irs except the instruction does not produce
|
|
/// a explicit result, only implicitly set CPSR.
|
|
let Defs = [CPSR] in {
|
|
multiclass T2I_cmp_irs<bits<4> opcod, string opc, PatFrag opnode> {
|
|
// shifted imm
|
|
def ri : T2I<(outs), (ins GPR:$lhs, t2_so_imm:$rhs), IIC_iCMPi,
|
|
opc, ".w\t$lhs, $rhs",
|
|
[(opnode GPR:$lhs, t2_so_imm:$rhs)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
}
|
|
// register
|
|
def rr : T2I<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
|
|
opc, ".w\t$lhs, $rhs",
|
|
[(opnode GPR:$lhs, GPR:$rhs)]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2I<(outs), (ins GPR:$lhs, t2_so_reg:$rhs), IIC_iCMPsi,
|
|
opc, ".w\t$lhs, $rhs",
|
|
[(opnode GPR:$lhs, t2_so_reg:$rhs)]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_ld - Defines a set of (op r, {imm12|imm8|so_reg}) load patterns.
|
|
multiclass T2I_ld<bit signed, bits<2> opcod, string opc, PatFrag opnode> {
|
|
def i12 : T2Ii12<(outs GPR:$dst), (ins t2addrmode_imm12:$addr), IIC_iLoadi,
|
|
opc, ".w\t$dst, $addr",
|
|
[(set GPR:$dst, (opnode t2addrmode_imm12:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 1;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
}
|
|
def i8 : T2Ii8 <(outs GPR:$dst), (ins t2addrmode_imm8:$addr), IIC_iLoadi,
|
|
opc, "\t$dst, $addr",
|
|
[(set GPR:$dst, (opnode t2addrmode_imm8:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11} = 1;
|
|
// Offset: index==TRUE, wback==FALSE
|
|
let Inst{10} = 1; // The P bit.
|
|
let Inst{8} = 0; // The W bit.
|
|
}
|
|
def s : T2Iso <(outs GPR:$dst), (ins t2addrmode_so_reg:$addr), IIC_iLoadr,
|
|
opc, ".w\t$dst, $addr",
|
|
[(set GPR:$dst, (opnode t2addrmode_so_reg:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11-6} = 0b000000;
|
|
}
|
|
def pci : T2Ipc <(outs GPR:$dst), (ins i32imm:$addr), IIC_iLoadi,
|
|
opc, ".w\t$dst, $addr",
|
|
[(set GPR:$dst, (opnode (ARMWrapper tconstpool:$addr)))]> {
|
|
let isReMaterializable = 1;
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = ?; // add = (U == '1')
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
}
|
|
}
|
|
|
|
/// T2I_st - Defines a set of (op r, {imm12|imm8|so_reg}) store patterns.
|
|
multiclass T2I_st<bits<2> opcod, string opc, PatFrag opnode> {
|
|
def i12 : T2Ii12<(outs), (ins GPR:$src, t2addrmode_imm12:$addr), IIC_iStorei,
|
|
opc, ".w\t$src, $addr",
|
|
[(opnode GPR:$src, t2addrmode_imm12:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0001;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
}
|
|
def i8 : T2Ii8 <(outs), (ins GPR:$src, t2addrmode_imm8:$addr), IIC_iStorei,
|
|
opc, "\t$src, $addr",
|
|
[(opnode GPR:$src, t2addrmode_imm8:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0000;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
let Inst{11} = 1;
|
|
// Offset: index==TRUE, wback==FALSE
|
|
let Inst{10} = 1; // The P bit.
|
|
let Inst{8} = 0; // The W bit.
|
|
}
|
|
def s : T2Iso <(outs), (ins GPR:$src, t2addrmode_so_reg:$addr), IIC_iStorer,
|
|
opc, ".w\t$src, $addr",
|
|
[(opnode GPR:$src, t2addrmode_so_reg:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0000;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
let Inst{11-6} = 0b000000;
|
|
}
|
|
}
|
|
|
|
/// T2I_unary_rrot - A unary operation with two forms: one whose operand is a
|
|
/// register and one whose operand is a register rotated by 8/16/24.
|
|
multiclass T2I_unary_rrot<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def r : T2I<(outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
opc, ".w\t$dst, $src",
|
|
[(set GPR:$dst, (opnode GPR:$src))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2I<(outs GPR:$dst), (ins GPR:$src, i32imm:$rot), IIC_iUNAsi,
|
|
opc, ".w\t$dst, $src, ror $rot",
|
|
[(set GPR:$dst, (opnode (rotr GPR:$src, rot_imm:$rot)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = {?,?}; // rotate
|
|
}
|
|
}
|
|
|
|
// SXTB16 and UXTB16 do not need the .w qualifier.
|
|
multiclass T2I_unary_rrot_nw<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def r : T2I<(outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
opc, "\t$dst, $src",
|
|
[(set GPR:$dst, (opnode GPR:$src))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2I<(outs GPR:$dst), (ins GPR:$src, i32imm:$rot), IIC_iUNAsi,
|
|
opc, "\t$dst, $src, ror $rot",
|
|
[(set GPR:$dst, (opnode (rotr GPR:$src, rot_imm:$rot)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = {?,?}; // rotate
|
|
}
|
|
}
|
|
|
|
// DO variant - disassembly only, no pattern
|
|
|
|
multiclass T2I_unary_rrot_DO<bits<3> opcod, string opc> {
|
|
def r : T2I<(outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
opc, "\t$dst, $src", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2I<(outs GPR:$dst), (ins GPR:$src, i32imm:$rot), IIC_iUNAsi,
|
|
opc, "\t$dst, $src, ror $rot", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = {?,?}; // rotate
|
|
}
|
|
}
|
|
|
|
/// T2I_bin_rrot - A binary operation with two forms: one whose operand is a
|
|
/// register and one whose operand is a register rotated by 8/16/24.
|
|
multiclass T2I_bin_rrot<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def rr : T2I<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS), IIC_iALUr,
|
|
opc, "\t$dst, $LHS, $RHS",
|
|
[(set GPR:$dst, (opnode GPR:$LHS, GPR:$RHS))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def rr_rot : T2I<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS, i32imm:$rot),
|
|
IIC_iALUsr, opc, "\t$dst, $LHS, $RHS, ror $rot",
|
|
[(set GPR:$dst, (opnode GPR:$LHS,
|
|
(rotr GPR:$RHS, rot_imm:$rot)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = {?,?}; // rotate
|
|
}
|
|
}
|
|
|
|
// DO variant - disassembly only, no pattern
|
|
|
|
multiclass T2I_bin_rrot_DO<bits<3> opcod, string opc> {
|
|
def rr : T2I<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS), IIC_iALUr,
|
|
opc, "\t$dst, $LHS, $RHS", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def rr_rot : T2I<(outs GPR:$dst), (ins GPR:$LHS, GPR:$RHS, i32imm:$rot),
|
|
IIC_iALUsr, opc, "\t$dst, $LHS, $RHS, ror $rot", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = {?,?}; // rotate
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Instructions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Miscellaneous Instructions.
|
|
//
|
|
|
|
// LEApcrel - Load a pc-relative address into a register without offending the
|
|
// assembler.
|
|
def t2LEApcrel : T2XI<(outs GPR:$dst), (ins i32imm:$label, pred:$p), IIC_iALUi,
|
|
"adr$p.w\t$dst, #$label", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-24} = 0b10;
|
|
// Inst{23:21} = '11' (add = FALSE) or '00' (add = TRUE)
|
|
let Inst{22} = 0;
|
|
let Inst{20} = 0;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
def t2LEApcrelJT : T2XI<(outs GPR:$dst),
|
|
(ins i32imm:$label, nohash_imm:$id, pred:$p), IIC_iALUi,
|
|
"adr$p.w\t$dst, #${label}_${id}", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-24} = 0b10;
|
|
// Inst{23:21} = '11' (add = FALSE) or '00' (add = TRUE)
|
|
let Inst{22} = 0;
|
|
let Inst{20} = 0;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// ADD r, sp, {so_imm|i12}
|
|
def t2ADDrSPi : T2sI<(outs GPR:$dst), (ins GPR:$sp, t2_so_imm:$imm),
|
|
IIC_iALUi, "add", ".w\t$dst, $sp, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b1000;
|
|
let Inst{20} = ?; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
def t2ADDrSPi12 : T2I<(outs GPR:$dst), (ins GPR:$sp, imm0_4095:$imm),
|
|
IIC_iALUi, "addw", "\t$dst, $sp, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-21} = 0b0000;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// ADD r, sp, so_reg
|
|
def t2ADDrSPs : T2sI<(outs GPR:$dst), (ins GPR:$sp, t2_so_reg:$rhs),
|
|
IIC_iALUsi, "add", ".w\t$dst, $sp, $rhs", []> {
|
|
let Inst{31-27} = 0b11101;
|
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let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b1000;
|
|
let Inst{20} = ?; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
|
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// SUB r, sp, {so_imm|i12}
|
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def t2SUBrSPi : T2sI<(outs GPR:$dst), (ins GPR:$sp, t2_so_imm:$imm),
|
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IIC_iALUi, "sub", ".w\t$dst, $sp, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b1101;
|
|
let Inst{20} = ?; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
def t2SUBrSPi12 : T2I<(outs GPR:$dst), (ins GPR:$sp, imm0_4095:$imm),
|
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IIC_iALUi, "subw", "\t$dst, $sp, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-21} = 0b0101;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// SUB r, sp, so_reg
|
|
def t2SUBrSPs : T2sI<(outs GPR:$dst), (ins GPR:$sp, t2_so_reg:$rhs),
|
|
IIC_iALUsi,
|
|
"sub", "\t$dst, $sp, $rhs", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b1101;
|
|
let Inst{20} = ?; // The S bit.
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// Signed and unsigned division, for disassembly only
|
|
def t2SDIV : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iALUi,
|
|
"sdiv", "\t$dst, $a, $b", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-21} = 0b011100;
|
|
let Inst{20} = 0b1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b1111;
|
|
}
|
|
|
|
def t2UDIV : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iALUi,
|
|
"udiv", "\t$dst, $a, $b", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-21} = 0b011101;
|
|
let Inst{20} = 0b1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b1111;
|
|
}
|
|
|
|
// Pseudo instruction that will expand into a t2SUBrSPi + a copy.
|
|
let usesCustomInserter = 1 in { // Expanded after instruction selection.
|
|
def t2SUBrSPi_ : PseudoInst<(outs GPR:$dst), (ins GPR:$sp, t2_so_imm:$imm),
|
|
NoItinerary, "@ sub.w\t$dst, $sp, $imm", []>;
|
|
def t2SUBrSPi12_ : PseudoInst<(outs GPR:$dst), (ins GPR:$sp, imm0_4095:$imm),
|
|
NoItinerary, "@ subw\t$dst, $sp, $imm", []>;
|
|
def t2SUBrSPs_ : PseudoInst<(outs GPR:$dst), (ins GPR:$sp, t2_so_reg:$rhs),
|
|
NoItinerary, "@ sub\t$dst, $sp, $rhs", []>;
|
|
} // usesCustomInserter
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Load / store Instructions.
|
|
//
|
|
|
|
// Load
|
|
let canFoldAsLoad = 1, isReMaterializable = 1 in
|
|
defm t2LDR : T2I_ld<0, 0b10, "ldr", UnOpFrag<(load node:$Src)>>;
|
|
|
|
// Loads with zero extension
|
|
defm t2LDRH : T2I_ld<0, 0b01, "ldrh", UnOpFrag<(zextloadi16 node:$Src)>>;
|
|
defm t2LDRB : T2I_ld<0, 0b00, "ldrb", UnOpFrag<(zextloadi8 node:$Src)>>;
|
|
|
|
// Loads with sign extension
|
|
defm t2LDRSH : T2I_ld<1, 0b01, "ldrsh", UnOpFrag<(sextloadi16 node:$Src)>>;
|
|
defm t2LDRSB : T2I_ld<1, 0b00, "ldrsb", UnOpFrag<(sextloadi8 node:$Src)>>;
|
|
|
|
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in {
|
|
// Load doubleword
|
|
def t2LDRDi8 : T2Ii8s4<1, 0, 1, (outs GPR:$dst1, GPR:$dst2),
|
|
(ins t2addrmode_imm8s4:$addr),
|
|
IIC_iLoadi, "ldrd", "\t$dst1, $addr", []>;
|
|
def t2LDRDpci : T2Ii8s4<?, ?, 1, (outs GPR:$dst1, GPR:$dst2),
|
|
(ins i32imm:$addr), IIC_iLoadi,
|
|
"ldrd", "\t$dst1, $addr", []> {
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
}
|
|
}
|
|
|
|
// zextload i1 -> zextload i8
|
|
def : T2Pat<(zextloadi1 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(zextloadi1 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(zextloadi1 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(zextloadi1 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
// extload -> zextload
|
|
// FIXME: Reduce the number of patterns by legalizing extload to zextload
|
|
// earlier?
|
|
def : T2Pat<(extloadi1 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi1 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi1 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi1 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
def : T2Pat<(extloadi8 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi8 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi8 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi8 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
def : T2Pat<(extloadi16 t2addrmode_imm12:$addr),
|
|
(t2LDRHi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi16 t2addrmode_imm8:$addr),
|
|
(t2LDRHi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi16 t2addrmode_so_reg:$addr),
|
|
(t2LDRHs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi16 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRHpci tconstpool:$addr)>;
|
|
|
|
// Indexed loads
|
|
let mayLoad = 1 in {
|
|
def t2LDR_PRE : T2Iidxldst<0, 0b10, 1, 1, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoadiu,
|
|
"ldr", "\t$dst, $addr!", "$addr.base = $base_wb",
|
|
[]>;
|
|
|
|
def t2LDR_POST : T2Iidxldst<0, 0b10, 1, 0, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoadiu,
|
|
"ldr", "\t$dst, [$base], $offset", "$base = $base_wb",
|
|
[]>;
|
|
|
|
def t2LDRB_PRE : T2Iidxldst<0, 0b00, 1, 1, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoadiu,
|
|
"ldrb", "\t$dst, $addr!", "$addr.base = $base_wb",
|
|
[]>;
|
|
def t2LDRB_POST : T2Iidxldst<0, 0b00, 1, 0, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoadiu,
|
|
"ldrb", "\t$dst, [$base], $offset", "$base = $base_wb",
|
|
[]>;
|
|
|
|
def t2LDRH_PRE : T2Iidxldst<0, 0b01, 1, 1, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoadiu,
|
|
"ldrh", "\t$dst, $addr!", "$addr.base = $base_wb",
|
|
[]>;
|
|
def t2LDRH_POST : T2Iidxldst<0, 0b01, 1, 0, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoadiu,
|
|
"ldrh", "\t$dst, [$base], $offset", "$base = $base_wb",
|
|
[]>;
|
|
|
|
def t2LDRSB_PRE : T2Iidxldst<1, 0b00, 1, 1, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoadiu,
|
|
"ldrsb", "\t$dst, $addr!", "$addr.base = $base_wb",
|
|
[]>;
|
|
def t2LDRSB_POST : T2Iidxldst<1, 0b00, 1, 0, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoadiu,
|
|
"ldrsb", "\t$dst, [$base], $offset", "$base = $base_wb",
|
|
[]>;
|
|
|
|
def t2LDRSH_PRE : T2Iidxldst<1, 0b01, 1, 1, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoadiu,
|
|
"ldrsh", "\t$dst, $addr!", "$addr.base = $base_wb",
|
|
[]>;
|
|
def t2LDRSH_POST : T2Iidxldst<1, 0b01, 1, 0, (outs GPR:$dst, GPR:$base_wb),
|
|
(ins GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoadiu,
|
|
"ldrsh", "\t$dst, [$base], $offset", "$base = $base_wb",
|
|
[]>;
|
|
}
|
|
|
|
// LDRT, LDRBT, LDRHT, LDRSBT, LDRSHT all have offset mode (PUW=0b110) and are
|
|
// for disassembly only.
|
|
// Ref: A8.6.57 LDR (immediate, Thumb) Encoding T4
|
|
class T2IldT<bit signed, bits<2> type, string opc>
|
|
: T2Ii8<(outs GPR:$dst), (ins t2addrmode_imm8:$addr), IIC_iLoadi, opc,
|
|
"\t$dst, $addr", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = type;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11} = 1;
|
|
let Inst{10-8} = 0b110; // PUW.
|
|
}
|
|
|
|
def t2LDRT : T2IldT<0, 0b10, "ldrt">;
|
|
def t2LDRBT : T2IldT<0, 0b00, "ldrbt">;
|
|
def t2LDRHT : T2IldT<0, 0b01, "ldrht">;
|
|
def t2LDRSBT : T2IldT<1, 0b00, "ldrsbt">;
|
|
def t2LDRSHT : T2IldT<1, 0b01, "ldrsht">;
|
|
|
|
// Store
|
|
defm t2STR :T2I_st<0b10,"str", BinOpFrag<(store node:$LHS, node:$RHS)>>;
|
|
defm t2STRB:T2I_st<0b00,"strb",BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
|
|
defm t2STRH:T2I_st<0b01,"strh",BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
|
|
|
|
// Store doubleword
|
|
let mayLoad = 1, hasExtraSrcRegAllocReq = 1 in
|
|
def t2STRDi8 : T2Ii8s4<1, 0, 0, (outs),
|
|
(ins GPR:$src1, GPR:$src2, t2addrmode_imm8s4:$addr),
|
|
IIC_iStorer, "strd", "\t$src1, $addr", []>;
|
|
|
|
// Indexed stores
|
|
def t2STR_PRE : T2Iidxldst<0, 0b10, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStoreiu,
|
|
"str", "\t$src, [$base, $offset]!", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_store GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
def t2STR_POST : T2Iidxldst<0, 0b10, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStoreiu,
|
|
"str", "\t$src, [$base], $offset", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_store GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
def t2STRH_PRE : T2Iidxldst<0, 0b01, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStoreiu,
|
|
"strh", "\t$src, [$base, $offset]!", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_truncsti16 GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
def t2STRH_POST : T2Iidxldst<0, 0b01, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStoreiu,
|
|
"strh", "\t$src, [$base], $offset", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_truncsti16 GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
def t2STRB_PRE : T2Iidxldst<0, 0b00, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStoreiu,
|
|
"strb", "\t$src, [$base, $offset]!", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_truncsti8 GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
def t2STRB_POST : T2Iidxldst<0, 0b00, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$src, GPR:$base, t2am_imm8_offset:$offset),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStoreiu,
|
|
"strb", "\t$src, [$base], $offset", "$base = $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_truncsti8 GPR:$src, GPR:$base, t2am_imm8_offset:$offset))]>;
|
|
|
|
// STRT, STRBT, STRHT all have offset mode (PUW=0b110) and are for disassembly
|
|
// only.
|
|
// Ref: A8.6.193 STR (immediate, Thumb) Encoding T4
|
|
class T2IstT<bits<2> type, string opc>
|
|
: T2Ii8<(outs GPR:$src), (ins t2addrmode_imm8:$addr), IIC_iStorei, opc,
|
|
"\t$src, $addr", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = 0; // not signed
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = type;
|
|
let Inst{20} = 0; // store
|
|
let Inst{11} = 1;
|
|
let Inst{10-8} = 0b110; // PUW
|
|
}
|
|
|
|
def t2STRT : T2IstT<0b10, "strt">;
|
|
def t2STRBT : T2IstT<0b00, "strbt">;
|
|
def t2STRHT : T2IstT<0b01, "strht">;
|
|
|
|
// FIXME: ldrd / strd pre / post variants
|
|
|
|
// T2Ipl (Preload Data/Instruction) signals the memory system of possible future
|
|
// data/instruction access. These are for disassembly only.
|
|
multiclass T2Ipl<bit instr, bit write, string opc> {
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def i12 : T2I<(outs), (ins t2addrmode_imm12:$addr), IIC_iLoadi, opc,
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"\t$addr", []> {
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let Inst{31-25} = 0b1111100;
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let Inst{24} = instr;
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let Inst{23} = 1; // U = 1
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let Inst{22} = 0;
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let Inst{21} = write;
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let Inst{20} = 1;
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let Inst{15-12} = 0b1111;
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}
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def i8 : T2I<(outs), (ins t2addrmode_imm8:$addr), IIC_iLoadi, opc,
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"\t$addr", []> {
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let Inst{31-25} = 0b1111100;
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let Inst{24} = instr;
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let Inst{23} = 0; // U = 0
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let Inst{22} = 0;
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let Inst{21} = write;
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let Inst{20} = 1;
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let Inst{15-12} = 0b1111;
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let Inst{11-8} = 0b1100;
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}
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// A8.6.118 #0 and #-0 differs. Translates -0 to -1, -1 to -2, ..., etc.
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def pci : T2I<(outs), (ins GPR:$base, i32imm:$imm), IIC_iLoadi, opc,
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"\t[pc, ${imm:negzero}]", []> {
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let Inst{31-25} = 0b1111100;
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let Inst{24} = instr;
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let Inst{23} = ?; // add = (U == 1)
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let Inst{22} = 0;
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let Inst{21} = write;
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let Inst{20} = 1;
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let Inst{19-16} = 0b1111; // Rn = 0b1111
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let Inst{15-12} = 0b1111;
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}
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def r : T2I<(outs), (ins GPR:$base, GPR:$a), IIC_iLoadi, opc,
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"\t[$base, $a]", []> {
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let Inst{31-25} = 0b1111100;
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let Inst{24} = instr;
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let Inst{23} = 0; // add = TRUE for T1
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let Inst{22} = 0;
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let Inst{21} = write;
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let Inst{20} = 1;
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let Inst{15-12} = 0b1111;
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let Inst{11-6} = 0000000;
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let Inst{5-4} = 0b00; // no shift is applied
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}
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def s : T2I<(outs), (ins GPR:$base, GPR:$a, i32imm:$shamt), IIC_iLoadi, opc,
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"\t[$base, $a, lsl $shamt]", []> {
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let Inst{31-25} = 0b1111100;
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let Inst{24} = instr;
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let Inst{23} = 0; // add = TRUE for T1
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let Inst{22} = 0;
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let Inst{21} = write;
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let Inst{20} = 1;
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let Inst{15-12} = 0b1111;
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let Inst{11-6} = 0000000;
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}
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}
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defm t2PLD : T2Ipl<0, 0, "pld">;
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defm t2PLDW : T2Ipl<0, 1, "pldw">;
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defm t2PLI : T2Ipl<1, 0, "pli">;
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//===----------------------------------------------------------------------===//
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// Load / store multiple Instructions.
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//
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let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
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def t2LDM : T2XI<(outs),
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(ins addrmode4:$addr, pred:$p, reglist:$wb, variable_ops),
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IIC_iLoadm, "ldm${addr:submode}${p}${addr:wide}\t$addr, $wb", []> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b00;
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let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
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let Inst{22} = 0;
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let Inst{21} = ?; // The W bit.
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let Inst{20} = 1; // Load
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}
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let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
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def t2STM : T2XI<(outs),
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(ins addrmode4:$addr, pred:$p, reglist:$wb, variable_ops),
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IIC_iStorem, "stm${addr:submode}${p}${addr:wide}\t$addr, $wb", []> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b00;
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let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
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let Inst{22} = 0;
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let Inst{21} = ?; // The W bit.
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let Inst{20} = 0; // Store
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}
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//===----------------------------------------------------------------------===//
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// Move Instructions.
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//
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let neverHasSideEffects = 1 in
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def t2MOVr : T2sI<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
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"mov", ".w\t$dst, $src", []> {
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let Inst{31-27} = 0b11101;
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let Inst{26-25} = 0b01;
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let Inst{24-21} = 0b0010;
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let Inst{20} = ?; // The S bit.
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let Inst{19-16} = 0b1111; // Rn
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let Inst{14-12} = 0b000;
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let Inst{7-4} = 0b0000;
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}
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// AddedComplexity to ensure isel tries t2MOVi before t2MOVi16.
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let isReMaterializable = 1, isAsCheapAsAMove = 1, AddedComplexity = 1 in
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def t2MOVi : T2sI<(outs GPR:$dst), (ins t2_so_imm:$src), IIC_iMOVi,
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"mov", ".w\t$dst, $src",
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[(set GPR:$dst, t2_so_imm:$src)]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = 0b0010;
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let Inst{20} = ?; // The S bit.
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let Inst{19-16} = 0b1111; // Rn
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let Inst{15} = 0;
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}
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let isReMaterializable = 1, isAsCheapAsAMove = 1 in
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def t2MOVi16 : T2I<(outs GPR:$dst), (ins i32imm:$src), IIC_iMOVi,
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"movw", "\t$dst, $src",
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[(set GPR:$dst, imm0_65535:$src)]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 1;
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let Inst{24-21} = 0b0010;
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let Inst{20} = 0; // The S bit.
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let Inst{15} = 0;
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}
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let Constraints = "$src = $dst" in
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def t2MOVTi16 : T2I<(outs GPR:$dst), (ins GPR:$src, i32imm:$imm), IIC_iMOVi,
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"movt", "\t$dst, $imm",
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[(set GPR:$dst,
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(or (and GPR:$src, 0xffff), lo16AllZero:$imm))]> {
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let Inst{31-27} = 0b11110;
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let Inst{25} = 1;
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let Inst{24-21} = 0b0110;
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let Inst{20} = 0; // The S bit.
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let Inst{15} = 0;
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}
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def : T2Pat<(or GPR:$src, 0xffff0000), (t2MOVTi16 GPR:$src, 0xffff)>;
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//===----------------------------------------------------------------------===//
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// Extend Instructions.
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//
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// Sign extenders
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defm t2SXTB : T2I_unary_rrot<0b100, "sxtb",
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UnOpFrag<(sext_inreg node:$Src, i8)>>;
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defm t2SXTH : T2I_unary_rrot<0b000, "sxth",
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UnOpFrag<(sext_inreg node:$Src, i16)>>;
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defm t2SXTB16 : T2I_unary_rrot_DO<0b010, "sxtb16">;
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defm t2SXTAB : T2I_bin_rrot<0b100, "sxtab",
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BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS, i8))>>;
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defm t2SXTAH : T2I_bin_rrot<0b000, "sxtah",
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BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
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defm t2SXTAB16 : T2I_bin_rrot_DO<0b010, "sxtab16">;
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// TODO: SXT(A){B|H}16 - done for disassembly only
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// Zero extenders
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let AddedComplexity = 16 in {
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defm t2UXTB : T2I_unary_rrot<0b101, "uxtb",
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UnOpFrag<(and node:$Src, 0x000000FF)>>;
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defm t2UXTH : T2I_unary_rrot<0b001, "uxth",
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UnOpFrag<(and node:$Src, 0x0000FFFF)>>;
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defm t2UXTB16 : T2I_unary_rrot_nw<0b011, "uxtb16",
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UnOpFrag<(and node:$Src, 0x00FF00FF)>>;
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def : T2Pat<(and (shl GPR:$Src, (i32 8)), 0xFF00FF),
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(t2UXTB16r_rot GPR:$Src, 24)>;
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def : T2Pat<(and (srl GPR:$Src, (i32 8)), 0xFF00FF),
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(t2UXTB16r_rot GPR:$Src, 8)>;
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defm t2UXTAB : T2I_bin_rrot<0b101, "uxtab",
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BinOpFrag<(add node:$LHS, (and node:$RHS, 0x00FF))>>;
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defm t2UXTAH : T2I_bin_rrot<0b001, "uxtah",
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BinOpFrag<(add node:$LHS, (and node:$RHS, 0xFFFF))>>;
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defm t2UXTAB16 : T2I_bin_rrot_DO<0b011, "uxtab16">;
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}
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//===----------------------------------------------------------------------===//
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// Arithmetic Instructions.
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//
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defm t2ADD : T2I_bin_ii12rs<0b000, "add",
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BinOpFrag<(add node:$LHS, node:$RHS)>, 1>;
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defm t2SUB : T2I_bin_ii12rs<0b101, "sub",
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BinOpFrag<(sub node:$LHS, node:$RHS)>>;
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// ADD and SUB with 's' bit set. No 12-bit immediate (T4) variants.
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defm t2ADDS : T2I_bin_s_irs <0b1000, "add",
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BinOpFrag<(addc node:$LHS, node:$RHS)>, 1>;
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defm t2SUBS : T2I_bin_s_irs <0b1101, "sub",
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BinOpFrag<(subc node:$LHS, node:$RHS)>>;
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defm t2ADC : T2I_adde_sube_irs<0b1010, "adc",
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BinOpFrag<(adde_dead_carry node:$LHS, node:$RHS)>, 1>;
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defm t2SBC : T2I_adde_sube_irs<0b1011, "sbc",
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BinOpFrag<(sube_dead_carry node:$LHS, node:$RHS)>>;
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defm t2ADCS : T2I_adde_sube_s_irs<0b1010, "adc",
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BinOpFrag<(adde_live_carry node:$LHS, node:$RHS)>, 1>;
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defm t2SBCS : T2I_adde_sube_s_irs<0b1011, "sbc",
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BinOpFrag<(sube_live_carry node:$LHS, node:$RHS)>>;
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// RSB
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defm t2RSB : T2I_rbin_is <0b1110, "rsb",
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BinOpFrag<(sub node:$LHS, node:$RHS)>>;
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defm t2RSBS : T2I_rbin_s_is <0b1110, "rsb",
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BinOpFrag<(subc node:$LHS, node:$RHS)>>;
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// (sub X, imm) gets canonicalized to (add X, -imm). Match this form.
|
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let AddedComplexity = 1 in
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def : T2Pat<(add GPR:$src, imm0_255_neg:$imm),
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(t2SUBri GPR:$src, imm0_255_neg:$imm)>;
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def : T2Pat<(add GPR:$src, t2_so_imm_neg:$imm),
|
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(t2SUBri GPR:$src, t2_so_imm_neg:$imm)>;
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def : T2Pat<(add GPR:$src, imm0_4095_neg:$imm),
|
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(t2SUBri12 GPR:$src, imm0_4095_neg:$imm)>;
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// Select Bytes -- for disassembly only
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def t2SEL : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), NoItinerary, "sel",
|
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"\t$dst, $a, $b", []> {
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let Inst{31-27} = 0b11111;
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let Inst{26-24} = 0b010;
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let Inst{23} = 0b1;
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let Inst{22-20} = 0b010;
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let Inst{15-12} = 0b1111;
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let Inst{7} = 0b1;
|
|
let Inst{6-4} = 0b000;
|
|
}
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|
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// A6.3.13, A6.3.14, A6.3.15 Parallel addition and subtraction (signed/unsigned)
|
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// And Miscellaneous operations -- for disassembly only
|
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class T2I_pam<bits<3> op22_20, bits<4> op7_4, string opc>
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: T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), NoItinerary, opc,
|
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"\t$dst, $a, $b", [/* For disassembly only; pattern left blank */]> {
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let Inst{31-27} = 0b11111;
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let Inst{26-23} = 0b0101;
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let Inst{22-20} = op22_20;
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let Inst{15-12} = 0b1111;
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let Inst{7-4} = op7_4;
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}
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|
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// Saturating add/subtract -- for disassembly only
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def t2QADD : T2I_pam<0b000, 0b1000, "qadd">;
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def t2QADD16 : T2I_pam<0b001, 0b0001, "qadd16">;
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def t2QADD8 : T2I_pam<0b000, 0b0001, "qadd8">;
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def t2QASX : T2I_pam<0b010, 0b0001, "qasx">;
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def t2QDADD : T2I_pam<0b000, 0b1001, "qdadd">;
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def t2QDSUB : T2I_pam<0b000, 0b1011, "qdsub">;
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def t2QSAX : T2I_pam<0b110, 0b0001, "qsax">;
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def t2QSUB : T2I_pam<0b000, 0b1010, "qsub">;
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def t2QSUB16 : T2I_pam<0b101, 0b0001, "qsub16">;
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def t2QSUB8 : T2I_pam<0b100, 0b0001, "qsub8">;
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def t2UQADD16 : T2I_pam<0b001, 0b0101, "uqadd16">;
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def t2UQADD8 : T2I_pam<0b000, 0b0101, "uqadd8">;
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def t2UQASX : T2I_pam<0b010, 0b0101, "uqasx">;
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def t2UQSAX : T2I_pam<0b110, 0b0101, "uqsax">;
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def t2UQSUB16 : T2I_pam<0b101, 0b0101, "uqsub16">;
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def t2UQSUB8 : T2I_pam<0b100, 0b0101, "uqsub8">;
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// Signed/Unsigned add/subtract -- for disassembly only
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|
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def t2SASX : T2I_pam<0b010, 0b0000, "sasx">;
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def t2SADD16 : T2I_pam<0b001, 0b0000, "sadd16">;
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def t2SADD8 : T2I_pam<0b000, 0b0000, "sadd8">;
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def t2SSAX : T2I_pam<0b110, 0b0000, "ssax">;
|
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def t2SSUB16 : T2I_pam<0b101, 0b0000, "ssub16">;
|
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def t2SSUB8 : T2I_pam<0b100, 0b0000, "ssub8">;
|
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def t2UASX : T2I_pam<0b010, 0b0100, "uasx">;
|
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def t2UADD16 : T2I_pam<0b001, 0b0100, "uadd16">;
|
|
def t2UADD8 : T2I_pam<0b000, 0b0100, "uadd8">;
|
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def t2USAX : T2I_pam<0b110, 0b0100, "usax">;
|
|
def t2USUB16 : T2I_pam<0b101, 0b0100, "usub16">;
|
|
def t2USUB8 : T2I_pam<0b100, 0b0100, "usub8">;
|
|
|
|
// Signed/Unsigned halving add/subtract -- for disassembly only
|
|
|
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def t2SHASX : T2I_pam<0b010, 0b0010, "shasx">;
|
|
def t2SHADD16 : T2I_pam<0b001, 0b0010, "shadd16">;
|
|
def t2SHADD8 : T2I_pam<0b000, 0b0010, "shadd8">;
|
|
def t2SHSAX : T2I_pam<0b110, 0b0010, "shsax">;
|
|
def t2SHSUB16 : T2I_pam<0b101, 0b0010, "shsub16">;
|
|
def t2SHSUB8 : T2I_pam<0b100, 0b0010, "shsub8">;
|
|
def t2UHASX : T2I_pam<0b010, 0b0110, "uhasx">;
|
|
def t2UHADD16 : T2I_pam<0b001, 0b0110, "uhadd16">;
|
|
def t2UHADD8 : T2I_pam<0b000, 0b0110, "uhadd8">;
|
|
def t2UHSAX : T2I_pam<0b110, 0b0110, "uhsax">;
|
|
def t2UHSUB16 : T2I_pam<0b101, 0b0110, "uhsub16">;
|
|
def t2UHSUB8 : T2I_pam<0b100, 0b0110, "uhsub8">;
|
|
|
|
// Unsigned Sum of Absolute Differences [and Accumulate] -- for disassembly only
|
|
|
|
def t2USAD8 : T2I_mac<0, 0b111, 0b0000, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
|
|
NoItinerary, "usad8", "\t$dst, $a, $b", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2USADA8 : T2I_mac<0, 0b111, 0b0000, (outs GPR:$dst),
|
|
(ins GPR:$a, GPR:$b, GPR:$acc), NoItinerary, "usada8",
|
|
"\t$dst, $a, $b, $acc", []>;
|
|
|
|
// Signed/Unsigned saturate -- for disassembly only
|
|
|
|
def t2SSATlsl : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos,GPR:$a,i32imm:$shamt),
|
|
NoItinerary, "ssat", "\t$dst, $bit_pos, $a, lsl $shamt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1100;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 0; // sh = '0'
|
|
}
|
|
|
|
def t2SSATasr : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos,GPR:$a,i32imm:$shamt),
|
|
NoItinerary, "ssat", "\t$dst, $bit_pos, $a, asr $shamt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1100;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
}
|
|
|
|
def t2SSAT16 : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos, GPR:$a), NoItinerary,
|
|
"ssat16", "\t$dst, $bit_pos, $a",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1100;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
let Inst{14-12} = 0b000; // imm3 = '000'
|
|
let Inst{7-6} = 0b00; // imm2 = '00'
|
|
}
|
|
|
|
def t2USATlsl : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos,GPR:$a,i32imm:$shamt),
|
|
NoItinerary, "usat", "\t$dst, $bit_pos, $a, lsl $shamt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1110;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 0; // sh = '0'
|
|
}
|
|
|
|
def t2USATasr : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos,GPR:$a,i32imm:$shamt),
|
|
NoItinerary, "usat", "\t$dst, $bit_pos, $a, asr $shamt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1110;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
}
|
|
|
|
def t2USAT16 : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos, GPR:$a), NoItinerary,
|
|
"usat16", "\t$dst, $bit_pos, $a",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1110;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
let Inst{14-12} = 0b000; // imm3 = '000'
|
|
let Inst{7-6} = 0b00; // imm2 = '00'
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Shift and rotate Instructions.
|
|
//
|
|
|
|
defm t2LSL : T2I_sh_ir<0b00, "lsl", BinOpFrag<(shl node:$LHS, node:$RHS)>>;
|
|
defm t2LSR : T2I_sh_ir<0b01, "lsr", BinOpFrag<(srl node:$LHS, node:$RHS)>>;
|
|
defm t2ASR : T2I_sh_ir<0b10, "asr", BinOpFrag<(sra node:$LHS, node:$RHS)>>;
|
|
defm t2ROR : T2I_sh_ir<0b11, "ror", BinOpFrag<(rotr node:$LHS, node:$RHS)>>;
|
|
|
|
let Uses = [CPSR] in {
|
|
def t2MOVrx : T2sI<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVsi,
|
|
"rrx", "\t$dst, $src",
|
|
[(set GPR:$dst, (ARMrrx GPR:$src))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = ?; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-4} = 0b0011;
|
|
}
|
|
}
|
|
|
|
let Defs = [CPSR] in {
|
|
def t2MOVsrl_flag : T2XI<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVsi,
|
|
"lsrs.w\t$dst, $src, #1",
|
|
[(set GPR:$dst, (ARMsrl_flag GPR:$src))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = 0b01; // Shift type.
|
|
// Shift amount = Inst{14-12:7-6} = 1.
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-6} = 0b01;
|
|
}
|
|
def t2MOVsra_flag : T2XI<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVsi,
|
|
"asrs.w\t$dst, $src, #1",
|
|
[(set GPR:$dst, (ARMsra_flag GPR:$src))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = 0b10; // Shift type.
|
|
// Shift amount = Inst{14-12:7-6} = 1.
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-6} = 0b01;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Bitwise Instructions.
|
|
//
|
|
|
|
defm t2AND : T2I_bin_w_irs<0b0000, "and",
|
|
BinOpFrag<(and node:$LHS, node:$RHS)>, 1>;
|
|
defm t2ORR : T2I_bin_w_irs<0b0010, "orr",
|
|
BinOpFrag<(or node:$LHS, node:$RHS)>, 1>;
|
|
defm t2EOR : T2I_bin_w_irs<0b0100, "eor",
|
|
BinOpFrag<(xor node:$LHS, node:$RHS)>, 1>;
|
|
|
|
defm t2BIC : T2I_bin_w_irs<0b0001, "bic",
|
|
BinOpFrag<(and node:$LHS, (not node:$RHS))>>;
|
|
|
|
let Constraints = "$src = $dst" in
|
|
def t2BFC : T2I<(outs GPR:$dst), (ins GPR:$src, bf_inv_mask_imm:$imm),
|
|
IIC_iUNAsi, "bfc", "\t$dst, $imm",
|
|
[(set GPR:$dst, (and GPR:$src, bf_inv_mask_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10110;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
def t2SBFX : T2I<(outs GPR:$dst), (ins GPR:$src, imm0_31:$lsb, imm0_31:$width),
|
|
IIC_iALUi, "sbfx", "\t$dst, $src, $lsb, $width", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10100;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
def t2UBFX : T2I<(outs GPR:$dst), (ins GPR:$src, imm0_31:$lsb, imm0_31:$width),
|
|
IIC_iALUi, "ubfx", "\t$dst, $src, $lsb, $width", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b11100;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// A8.6.18 BFI - Bitfield insert (Encoding T1)
|
|
// Added for disassembler with the pattern field purposely left blank.
|
|
// FIXME: Utilize this instruction in codgen.
|
|
def t2BFI : T2I<(outs GPR:$dst), (ins GPR:$src, imm0_31:$lsb, imm0_31:$width),
|
|
IIC_iALUi, "bfi", "\t$dst, $src, $lsb, $width", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10110;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
defm t2ORN : T2I_bin_irs<0b0011, "orn", BinOpFrag<(or node:$LHS,
|
|
(not node:$RHS))>>;
|
|
|
|
// Prefer over of t2EORri ra, rb, -1 because mvn has 16-bit version
|
|
let AddedComplexity = 1 in
|
|
defm t2MVN : T2I_un_irs <0b0011, "mvn", UnOpFrag<(not node:$Src)>, 1, 1>;
|
|
|
|
|
|
def : T2Pat<(and GPR:$src, t2_so_imm_not:$imm),
|
|
(t2BICri GPR:$src, t2_so_imm_not:$imm)>;
|
|
|
|
// FIXME: Disable this pattern on Darwin to workaround an assembler bug.
|
|
def : T2Pat<(or GPR:$src, t2_so_imm_not:$imm),
|
|
(t2ORNri GPR:$src, t2_so_imm_not:$imm)>,
|
|
Requires<[IsThumb2]>;
|
|
|
|
def : T2Pat<(t2_so_imm_not:$src),
|
|
(t2MVNi t2_so_imm_not:$src)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Multiply Instructions.
|
|
//
|
|
let isCommutable = 1 in
|
|
def t2MUL: T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
"mul", "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (mul GPR:$a, GPR:$b))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0000; // Multiply
|
|
}
|
|
|
|
def t2MLA: T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"mla", "\t$dst, $a, $b, $c",
|
|
[(set GPR:$dst, (add (mul GPR:$a, GPR:$b), GPR:$c))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0000; // Multiply
|
|
}
|
|
|
|
def t2MLS: T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"mls", "\t$dst, $a, $b, $c",
|
|
[(set GPR:$dst, (sub GPR:$c, (mul GPR:$a, GPR:$b)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0001; // Multiply and Subtract
|
|
}
|
|
|
|
// Extra precision multiplies with low / high results
|
|
let neverHasSideEffects = 1 in {
|
|
let isCommutable = 1 in {
|
|
def t2SMULL : T2I<(outs GPR:$ldst, GPR:$hdst), (ins GPR:$a, GPR:$b), IIC_iMUL64,
|
|
"smull", "\t$ldst, $hdst, $a, $b", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0111;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
def t2UMULL : T2I<(outs GPR:$ldst, GPR:$hdst), (ins GPR:$a, GPR:$b), IIC_iMUL64,
|
|
"umull", "\t$ldst, $hdst, $a, $b", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0111;
|
|
let Inst{22-20} = 0b010;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
} // isCommutable
|
|
|
|
// Multiply + accumulate
|
|
def t2SMLAL : T2I<(outs GPR:$ldst, GPR:$hdst), (ins GPR:$a, GPR:$b), IIC_iMAC64,
|
|
"smlal", "\t$ldst, $hdst, $a, $b", []>{
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0111;
|
|
let Inst{22-20} = 0b100;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
def t2UMLAL : T2I<(outs GPR:$ldst, GPR:$hdst), (ins GPR:$a, GPR:$b), IIC_iMAC64,
|
|
"umlal", "\t$ldst, $hdst, $a, $b", []>{
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0111;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
def t2UMAAL : T2I<(outs GPR:$ldst, GPR:$hdst), (ins GPR:$a, GPR:$b), IIC_iMAC64,
|
|
"umaal", "\t$ldst, $hdst, $a, $b", []>{
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0111;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{7-4} = 0b0110;
|
|
}
|
|
} // neverHasSideEffects
|
|
|
|
// Rounding variants of the below included for disassembly only
|
|
|
|
// Most significant word multiply
|
|
def t2SMMUL : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
"smmul", "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (mulhs GPR:$a, GPR:$b))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMULR : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
"smmulr", "\t$dst, $a, $b", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
def t2SMMLA : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"smmla", "\t$dst, $a, $b, $c",
|
|
[(set GPR:$dst, (add (mulhs GPR:$a, GPR:$b), GPR:$c))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMLAR : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"smmlar", "\t$dst, $a, $b, $c", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
def t2SMMLS : T2I <(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"smmls", "\t$dst, $a, $b, $c",
|
|
[(set GPR:$dst, (sub GPR:$c, (mulhs GPR:$a, GPR:$b)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMLSR : T2I <(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c), IIC_iMAC32,
|
|
"smmlsr", "\t$dst, $a, $b, $c", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
multiclass T2I_smul<string opc, PatFrag opnode> {
|
|
def BB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
!strconcat(opc, "bb"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (opnode (sext_inreg GPR:$a, i16),
|
|
(sext_inreg GPR:$b, i16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def BT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
!strconcat(opc, "bt"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (opnode (sext_inreg GPR:$a, i16),
|
|
(sra GPR:$b, (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
|
|
def TB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
!strconcat(opc, "tb"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (opnode (sra GPR:$a, (i32 16)),
|
|
(sext_inreg GPR:$b, i16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b10;
|
|
}
|
|
|
|
def TT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL32,
|
|
!strconcat(opc, "tt"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (opnode (sra GPR:$a, (i32 16)),
|
|
(sra GPR:$b, (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b11;
|
|
}
|
|
|
|
def WB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL16,
|
|
!strconcat(opc, "wb"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (sra (opnode GPR:$a,
|
|
(sext_inreg GPR:$b, i16)), (i32 16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def WT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b), IIC_iMUL16,
|
|
!strconcat(opc, "wt"), "\t$dst, $a, $b",
|
|
[(set GPR:$dst, (sra (opnode GPR:$a,
|
|
(sra GPR:$b, (i32 16))), (i32 16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
}
|
|
|
|
|
|
multiclass T2I_smla<string opc, PatFrag opnode> {
|
|
def BB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "bb"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc,
|
|
(opnode (sext_inreg GPR:$a, i16),
|
|
(sext_inreg GPR:$b, i16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def BT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "bt"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc, (opnode (sext_inreg GPR:$a, i16),
|
|
(sra GPR:$b, (i32 16)))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
|
|
def TB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "tb"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc, (opnode (sra GPR:$a, (i32 16)),
|
|
(sext_inreg GPR:$b, i16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b10;
|
|
}
|
|
|
|
def TT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "tt"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc, (opnode (sra GPR:$a, (i32 16)),
|
|
(sra GPR:$b, (i32 16)))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b11;
|
|
}
|
|
|
|
def WB : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "wb"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc, (sra (opnode GPR:$a,
|
|
(sext_inreg GPR:$b, i16)), (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def WT : T2I<(outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC16,
|
|
!strconcat(opc, "wt"), "\t$dst, $a, $b, $acc",
|
|
[(set GPR:$dst, (add GPR:$acc, (sra (opnode GPR:$a,
|
|
(sra GPR:$b, (i32 16))), (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = {?, ?, ?, ?}; // Ra
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
}
|
|
|
|
defm t2SMUL : T2I_smul<"smul", BinOpFrag<(mul node:$LHS, node:$RHS)>>;
|
|
defm t2SMLA : T2I_smla<"smla", BinOpFrag<(mul node:$LHS, node:$RHS)>>;
|
|
|
|
// Halfword multiple accumulate long: SMLAL<x><y> -- for disassembly only
|
|
def t2SMLALBB : T2I_mac<1, 0b100, 0b1000, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlalbb", "\t$ldst, $hdst, $a, $b",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALBT : T2I_mac<1, 0b100, 0b1001, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlalbt", "\t$ldst, $hdst, $a, $b",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALTB : T2I_mac<1, 0b100, 0b1010, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlaltb", "\t$ldst, $hdst, $a, $b",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALTT : T2I_mac<1, 0b100, 0b1011, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlaltt", "\t$ldst, $hdst, $a, $b",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
|
|
// Dual halfword multiple: SMUAD, SMUSD, SMLAD, SMLSD, SMLALD, SMLSLD
|
|
// These are for disassembly only.
|
|
|
|
def t2SMUAD : T2I_mac<0, 0b010, 0b0000, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
|
|
IIC_iMAC32, "smuad", "\t$dst, $a, $b", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUADX : T2I_mac<0, 0b010, 0b0001, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
|
|
IIC_iMAC32, "smuadx", "\t$dst, $a, $b", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUSD : T2I_mac<0, 0b100, 0b0000, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
|
|
IIC_iMAC32, "smusd", "\t$dst, $a, $b", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUSDX : T2I_mac<0, 0b100, 0b0001, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
|
|
IIC_iMAC32, "smusdx", "\t$dst, $a, $b", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMLAD : T2I_mac<0, 0b010, 0b0000, (outs GPR:$dst),
|
|
(ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC32, "smlad",
|
|
"\t$dst, $a, $b, $acc", []>;
|
|
def t2SMLADX : T2I_mac<0, 0b010, 0b0001, (outs GPR:$dst),
|
|
(ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC32, "smladx",
|
|
"\t$dst, $a, $b, $acc", []>;
|
|
def t2SMLSD : T2I_mac<0, 0b100, 0b0000, (outs GPR:$dst),
|
|
(ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC32, "smlsd",
|
|
"\t$dst, $a, $b, $acc", []>;
|
|
def t2SMLSDX : T2I_mac<0, 0b100, 0b0001, (outs GPR:$dst),
|
|
(ins GPR:$a, GPR:$b, GPR:$acc), IIC_iMAC32, "smlsdx",
|
|
"\t$dst, $a, $b, $acc", []>;
|
|
def t2SMLALD : T2I_mac<1, 0b100, 0b1100, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlald",
|
|
"\t$ldst, $hdst, $a, $b", []>;
|
|
def t2SMLALDX : T2I_mac<1, 0b100, 0b1101, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlaldx",
|
|
"\t$ldst, $hdst, $a, $b", []>;
|
|
def t2SMLSLD : T2I_mac<1, 0b101, 0b1100, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlsld",
|
|
"\t$ldst, $hdst, $a, $b", []>;
|
|
def t2SMLSLDX : T2I_mac<1, 0b101, 0b1101, (outs GPR:$ldst,GPR:$hdst),
|
|
(ins GPR:$a,GPR:$b), IIC_iMAC64, "smlsldx",
|
|
"\t$ldst, $hdst, $a, $b", []>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Misc. Arithmetic Instructions.
|
|
//
|
|
|
|
class T2I_misc<bits<2> op1, bits<2> op2, dag oops, dag iops,
|
|
InstrItinClass itin, string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-22} = 0b01010;
|
|
let Inst{21-20} = op1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-6} = 0b10;
|
|
let Inst{5-4} = op2;
|
|
}
|
|
|
|
def t2CLZ : T2I_misc<0b11, 0b00, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
"clz", "\t$dst, $src", [(set GPR:$dst, (ctlz GPR:$src))]>;
|
|
|
|
def t2RBIT : T2I_misc<0b01, 0b10, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
"rbit", "\t$dst, $src",
|
|
[(set GPR:$dst, (ARMrbit GPR:$src))]>;
|
|
|
|
def t2REV : T2I_misc<0b01, 0b00, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
"rev", ".w\t$dst, $src", [(set GPR:$dst, (bswap GPR:$src))]>;
|
|
|
|
def t2REV16 : T2I_misc<0b01, 0b01, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
"rev16", ".w\t$dst, $src",
|
|
[(set GPR:$dst,
|
|
(or (and (srl GPR:$src, (i32 8)), 0xFF),
|
|
(or (and (shl GPR:$src, (i32 8)), 0xFF00),
|
|
(or (and (srl GPR:$src, (i32 8)), 0xFF0000),
|
|
(and (shl GPR:$src, (i32 8)), 0xFF000000)))))]>;
|
|
|
|
def t2REVSH : T2I_misc<0b01, 0b11, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr,
|
|
"revsh", ".w\t$dst, $src",
|
|
[(set GPR:$dst,
|
|
(sext_inreg
|
|
(or (srl (and GPR:$src, 0xFF00), (i32 8)),
|
|
(shl GPR:$src, (i32 8))), i16))]>;
|
|
|
|
def t2PKHBT : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt),
|
|
IIC_iALUsi, "pkhbt", "\t$dst, $src1, $src2, lsl $shamt",
|
|
[(set GPR:$dst, (or (and GPR:$src1, 0xFFFF),
|
|
(and (shl GPR:$src2, (i32 imm:$shamt)),
|
|
0xFFFF0000)))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-20} = 0b01100;
|
|
let Inst{5} = 0; // BT form
|
|
let Inst{4} = 0;
|
|
}
|
|
|
|
// Alternate cases for PKHBT where identities eliminate some nodes.
|
|
def : T2Pat<(or (and GPR:$src1, 0xFFFF), (and GPR:$src2, 0xFFFF0000)),
|
|
(t2PKHBT GPR:$src1, GPR:$src2, 0)>;
|
|
def : T2Pat<(or (and GPR:$src1, 0xFFFF), (shl GPR:$src2, imm16_31:$shamt)),
|
|
(t2PKHBT GPR:$src1, GPR:$src2, imm16_31:$shamt)>;
|
|
|
|
def t2PKHTB : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt),
|
|
IIC_iALUsi, "pkhtb", "\t$dst, $src1, $src2, asr $shamt",
|
|
[(set GPR:$dst, (or (and GPR:$src1, 0xFFFF0000),
|
|
(and (sra GPR:$src2, imm16_31:$shamt),
|
|
0xFFFF)))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-20} = 0b01100;
|
|
let Inst{5} = 1; // TB form
|
|
let Inst{4} = 0;
|
|
}
|
|
|
|
// Alternate cases for PKHTB where identities eliminate some nodes. Note that
|
|
// a shift amount of 0 is *not legal* here, it is PKHBT instead.
|
|
def : T2Pat<(or (and GPR:$src1, 0xFFFF0000), (srl GPR:$src2, (i32 16))),
|
|
(t2PKHTB GPR:$src1, GPR:$src2, 16)>;
|
|
def : T2Pat<(or (and GPR:$src1, 0xFFFF0000),
|
|
(and (srl GPR:$src2, imm1_15:$shamt), 0xFFFF)),
|
|
(t2PKHTB GPR:$src1, GPR:$src2, imm1_15:$shamt)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Comparison Instructions...
|
|
//
|
|
|
|
defm t2CMP : T2I_cmp_irs<0b1101, "cmp",
|
|
BinOpFrag<(ARMcmp node:$LHS, node:$RHS)>>;
|
|
defm t2CMPz : T2I_cmp_irs<0b1101, "cmp",
|
|
BinOpFrag<(ARMcmpZ node:$LHS, node:$RHS)>>;
|
|
|
|
//FIXME: Disable CMN, as CCodes are backwards from compare expectations
|
|
// Compare-to-zero still works out, just not the relationals
|
|
//defm t2CMN : T2I_cmp_irs<0b1000, "cmn",
|
|
// BinOpFrag<(ARMcmp node:$LHS,(ineg node:$RHS))>>;
|
|
defm t2CMNz : T2I_cmp_irs<0b1000, "cmn",
|
|
BinOpFrag<(ARMcmpZ node:$LHS,(ineg node:$RHS))>>;
|
|
|
|
//def : T2Pat<(ARMcmp GPR:$src, t2_so_imm_neg:$imm),
|
|
// (t2CMNri GPR:$src, t2_so_imm_neg:$imm)>;
|
|
|
|
def : T2Pat<(ARMcmpZ GPR:$src, t2_so_imm_neg:$imm),
|
|
(t2CMNzri GPR:$src, t2_so_imm_neg:$imm)>;
|
|
|
|
defm t2TST : T2I_cmp_irs<0b0000, "tst",
|
|
BinOpFrag<(ARMcmpZ (and node:$LHS, node:$RHS), 0)>>;
|
|
defm t2TEQ : T2I_cmp_irs<0b0100, "teq",
|
|
BinOpFrag<(ARMcmpZ (xor node:$LHS, node:$RHS), 0)>>;
|
|
|
|
// A8.6.27 CBNZ, CBZ - Compare and branch on (non)zero.
|
|
// Short range conditional branch. Looks awesome for loops. Need to figure
|
|
// out how to use this one.
|
|
|
|
|
|
// Conditional moves
|
|
// FIXME: should be able to write a pattern for ARMcmov, but can't use
|
|
// a two-value operand where a dag node expects two operands. :(
|
|
def t2MOVCCr : T2I<(outs GPR:$dst), (ins GPR:$false, GPR:$true), IIC_iCMOVr,
|
|
"mov", ".w\t$dst, $true",
|
|
[/*(set GPR:$dst, (ARMcmov GPR:$false, GPR:$true, imm:$cc, CCR:$ccr))*/]>,
|
|
RegConstraint<"$false = $dst"> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
def t2MOVCCi : T2I<(outs GPR:$dst), (ins GPR:$false, t2_so_imm:$true),
|
|
IIC_iCMOVi, "mov", ".w\t$dst, $true",
|
|
[/*(set GPR:$dst, (ARMcmov GPR:$false, t2_so_imm:$true, imm:$cc, CCR:$ccr))*/]>,
|
|
RegConstraint<"$false = $dst"> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
class T2I_movcc_sh<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = opcod; // Shift type.
|
|
}
|
|
def t2MOVCClsl : T2I_movcc_sh<0b00, (outs GPR:$dst),
|
|
(ins GPR:$false, GPR:$true, i32imm:$rhs),
|
|
IIC_iCMOVsi, "lsl", ".w\t$dst, $true, $rhs", []>,
|
|
RegConstraint<"$false = $dst">;
|
|
def t2MOVCClsr : T2I_movcc_sh<0b01, (outs GPR:$dst),
|
|
(ins GPR:$false, GPR:$true, i32imm:$rhs),
|
|
IIC_iCMOVsi, "lsr", ".w\t$dst, $true, $rhs", []>,
|
|
RegConstraint<"$false = $dst">;
|
|
def t2MOVCCasr : T2I_movcc_sh<0b10, (outs GPR:$dst),
|
|
(ins GPR:$false, GPR:$true, i32imm:$rhs),
|
|
IIC_iCMOVsi, "asr", ".w\t$dst, $true, $rhs", []>,
|
|
RegConstraint<"$false = $dst">;
|
|
def t2MOVCCror : T2I_movcc_sh<0b11, (outs GPR:$dst),
|
|
(ins GPR:$false, GPR:$true, i32imm:$rhs),
|
|
IIC_iCMOVsi, "ror", ".w\t$dst, $true, $rhs", []>,
|
|
RegConstraint<"$false = $dst">;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Atomic operations intrinsics
|
|
//
|
|
|
|
// memory barriers protect the atomic sequences
|
|
let hasSideEffects = 1 in {
|
|
def t2Int_MemBarrierV7 : AInoP<(outs), (ins),
|
|
Pseudo, NoItinerary,
|
|
"dmb", "",
|
|
[(ARMMemBarrierV7)]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-4} = 0xF3BF8F5;
|
|
// FIXME: add support for options other than a full system DMB
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
|
|
def t2Int_SyncBarrierV7 : AInoP<(outs), (ins),
|
|
Pseudo, NoItinerary,
|
|
"dsb", "",
|
|
[(ARMSyncBarrierV7)]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-4} = 0xF3BF8F4;
|
|
// FIXME: add support for options other than a full system DSB
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
}
|
|
|
|
// Helper class for multiclass T2MemB -- for disassembly only
|
|
class T2I_memb<string opc, string asm>
|
|
: T2I<(outs), (ins), NoItinerary, opc, asm,
|
|
[/* For disassembly only; pattern left blank */]>,
|
|
Requires<[IsThumb2, HasV7]> {
|
|
let Inst{31-20} = 0xf3b;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
}
|
|
|
|
multiclass T2MemB<bits<4> op7_4, string opc> {
|
|
|
|
def st : T2I_memb<opc, "\tst"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b1110;
|
|
}
|
|
|
|
def ish : T2I_memb<opc, "\tish"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b1011;
|
|
}
|
|
|
|
def ishst : T2I_memb<opc, "\tishst"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b1010;
|
|
}
|
|
|
|
def nsh : T2I_memb<opc, "\tnsh"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b0111;
|
|
}
|
|
|
|
def nshst : T2I_memb<opc, "\tnshst"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b0110;
|
|
}
|
|
|
|
def osh : T2I_memb<opc, "\tosh"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b0011;
|
|
}
|
|
|
|
def oshst : T2I_memb<opc, "\toshst"> {
|
|
let Inst{7-4} = op7_4;
|
|
let Inst{3-0} = 0b0010;
|
|
}
|
|
}
|
|
|
|
// These DMB variants are for disassembly only.
|
|
defm t2DMB : T2MemB<0b0101, "dmb">;
|
|
|
|
// These DSB variants are for disassembly only.
|
|
defm t2DSB : T2MemB<0b0100, "dsb">;
|
|
|
|
// ISB has only full system option -- for disassembly only
|
|
def t2ISBsy : T2I_memb<"isb", ""> {
|
|
let Inst{7-4} = 0b0110;
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
|
|
class T2I_ldrex<bits<2> opcod, dag oops, dag iops, AddrMode am, SizeFlagVal sz,
|
|
InstrItinClass itin, string opc, string asm, string cstr,
|
|
list<dag> pattern, bits<4> rt2 = 0b1111>
|
|
: Thumb2I<oops, iops, am, sz, itin, opc, asm, cstr, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{11-8} = rt2;
|
|
let Inst{7-6} = 0b01;
|
|
let Inst{5-4} = opcod;
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
class T2I_strex<bits<2> opcod, dag oops, dag iops, AddrMode am, SizeFlagVal sz,
|
|
InstrItinClass itin, string opc, string asm, string cstr,
|
|
list<dag> pattern, bits<4> rt2 = 0b1111>
|
|
: Thumb2I<oops, iops, am, sz, itin, opc, asm, cstr, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001100;
|
|
let Inst{11-8} = rt2;
|
|
let Inst{7-6} = 0b01;
|
|
let Inst{5-4} = opcod;
|
|
}
|
|
|
|
let mayLoad = 1 in {
|
|
def t2LDREXB : T2I_ldrex<0b00, (outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
|
|
Size4Bytes, NoItinerary, "ldrexb", "\t$dest, [$ptr]",
|
|
"", []>;
|
|
def t2LDREXH : T2I_ldrex<0b01, (outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
|
|
Size4Bytes, NoItinerary, "ldrexh", "\t$dest, [$ptr]",
|
|
"", []>;
|
|
def t2LDREX : Thumb2I<(outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
|
|
Size4Bytes, NoItinerary,
|
|
"ldrex", "\t$dest, [$ptr]", "",
|
|
[]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000101;
|
|
let Inst{11-8} = 0b1111;
|
|
let Inst{7-0} = 0b00000000; // imm8 = 0
|
|
}
|
|
def t2LDREXD : T2I_ldrex<0b11, (outs GPR:$dest, GPR:$dest2), (ins GPR:$ptr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"ldrexd", "\t$dest, $dest2, [$ptr]", "",
|
|
[], {?, ?, ?, ?}>;
|
|
}
|
|
|
|
let mayStore = 1, Constraints = "@earlyclobber $success" in {
|
|
def t2STREXB : T2I_strex<0b00, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexb", "\t$success, $src, [$ptr]", "", []>;
|
|
def t2STREXH : T2I_strex<0b01, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexh", "\t$success, $src, [$ptr]", "", []>;
|
|
def t2STREX : Thumb2I<(outs GPR:$success), (ins GPR:$src, GPR:$ptr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strex", "\t$success, $src, [$ptr]", "",
|
|
[]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000100;
|
|
let Inst{7-0} = 0b00000000; // imm8 = 0
|
|
}
|
|
def t2STREXD : T2I_strex<0b11, (outs GPR:$success),
|
|
(ins GPR:$src, GPR:$src2, GPR:$ptr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexd", "\t$success, $src, $src2, [$ptr]", "", [],
|
|
{?, ?, ?, ?}>;
|
|
}
|
|
|
|
// Clear-Exclusive is for disassembly only.
|
|
def t2CLREX : T2I<(outs), (ins), NoItinerary, "clrex", "",
|
|
[/* For disassembly only; pattern left blank */]>,
|
|
Requires<[IsARM, HasV7]> {
|
|
let Inst{31-20} = 0xf3b;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{7-4} = 0b0010;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// TLS Instructions
|
|
//
|
|
|
|
// __aeabi_read_tp preserves the registers r1-r3.
|
|
let isCall = 1,
|
|
Defs = [R0, R12, LR, CPSR] in {
|
|
def t2TPsoft : T2XI<(outs), (ins), IIC_Br,
|
|
"bl\t__aeabi_read_tp",
|
|
[(set R0, ARMthread_pointer)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b11;
|
|
let Inst{12} = 1;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SJLJ Exception handling intrinsics
|
|
// eh_sjlj_setjmp() is an instruction sequence to store the return
|
|
// address and save #0 in R0 for the non-longjmp case.
|
|
// Since by its nature we may be coming from some other function to get
|
|
// here, and we're using the stack frame for the containing function to
|
|
// save/restore registers, we can't keep anything live in regs across
|
|
// the eh_sjlj_setjmp(), else it will almost certainly have been tromped upon
|
|
// when we get here from a longjmp(). We force everthing out of registers
|
|
// except for our own input by listing the relevant registers in Defs. By
|
|
// doing so, we also cause the prologue/epilogue code to actively preserve
|
|
// all of the callee-saved resgisters, which is exactly what we want.
|
|
// The current SP is passed in $val, and we reuse the reg as a scratch.
|
|
let Defs =
|
|
[ R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, LR, D0,
|
|
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15,
|
|
D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30,
|
|
D31 ] in {
|
|
def t2Int_eh_sjlj_setjmp : Thumb2XI<(outs), (ins GPR:$src, tGPR:$val),
|
|
AddrModeNone, SizeSpecial, NoItinerary,
|
|
"str\t$val, [$src, #8]\t@ begin eh.setjmp\n"
|
|
"\tmov\t$val, pc\n"
|
|
"\tadds\t$val, #9\n"
|
|
"\tstr\t$val, [$src, #4]\n"
|
|
"\tmovs\tr0, #0\n"
|
|
"\tb\t1f\n"
|
|
"\tmovs\tr0, #1\t@ end eh.setjmp\n"
|
|
"1:", "",
|
|
[(set R0, (ARMeh_sjlj_setjmp GPR:$src, tGPR:$val))]>;
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Control-Flow Instructions
|
|
//
|
|
|
|
// FIXME: remove when we have a way to marking a MI with these properties.
|
|
// FIXME: $dst1 should be a def. But the extra ops must be in the end of the
|
|
// operand list.
|
|
// FIXME: Should pc be an implicit operand like PICADD, etc?
|
|
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
|
|
hasExtraDefRegAllocReq = 1 in
|
|
def t2LDM_RET : T2XI<(outs),
|
|
(ins addrmode4:$addr, pred:$p, reglist:$wb, variable_ops),
|
|
IIC_Br, "ldm${addr:submode}${p}${addr:wide}\t$addr, $wb",
|
|
[]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = {?, ?}; // IA: '01', DB: '10'
|
|
let Inst{22} = 0;
|
|
let Inst{21} = ?; // The W bit.
|
|
let Inst{20} = 1; // Load
|
|
}
|
|
|
|
let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
|
|
let isPredicable = 1 in
|
|
def t2B : T2XI<(outs), (ins brtarget:$target), IIC_Br,
|
|
"b.w\t$target",
|
|
[(br bb:$target)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 1;
|
|
}
|
|
|
|
let isNotDuplicable = 1, isIndirectBranch = 1 in {
|
|
def t2BR_JT :
|
|
T2JTI<(outs),
|
|
(ins GPR:$target, GPR:$index, jt2block_operand:$jt, i32imm:$id),
|
|
IIC_Br, "mov\tpc, $target\n$jt",
|
|
[(ARMbr2jt GPR:$target, GPR:$index, tjumptable:$jt, imm:$id)]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0100100;
|
|
let Inst{19-16} = 0b1111;
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{11-8} = 0b1111; // Rd = pc
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
// FIXME: Add a non-pc based case that can be predicated.
|
|
def t2TBB :
|
|
T2JTI<(outs),
|
|
(ins tb_addrmode:$index, jt2block_operand:$jt, i32imm:$id),
|
|
IIC_Br, "tbb\t$index\n$jt", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{19-16} = 0b1111; // Rn = pc (table follows this instruction)
|
|
let Inst{15-8} = 0b11110000;
|
|
let Inst{7-4} = 0b0000; // B form
|
|
}
|
|
|
|
def t2TBH :
|
|
T2JTI<(outs),
|
|
(ins tb_addrmode:$index, jt2block_operand:$jt, i32imm:$id),
|
|
IIC_Br, "tbh\t$index\n$jt", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{19-16} = 0b1111; // Rn = pc (table follows this instruction)
|
|
let Inst{15-8} = 0b11110000;
|
|
let Inst{7-4} = 0b0001; // H form
|
|
}
|
|
|
|
// Generic versions of the above two instructions, for disassembly only
|
|
|
|
def t2TBBgen : T2I<(outs), (ins GPR:$a, GPR:$b), IIC_Br,
|
|
"tbb", "\t[$a, $b]", []>{
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{15-8} = 0b11110000;
|
|
let Inst{7-4} = 0b0000; // B form
|
|
}
|
|
|
|
def t2TBHgen : T2I<(outs), (ins GPR:$a, GPR:$b), IIC_Br,
|
|
"tbh", "\t[$a, $b, lsl #1]", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{15-8} = 0b11110000;
|
|
let Inst{7-4} = 0b0001; // H form
|
|
}
|
|
} // isNotDuplicable, isIndirectBranch
|
|
|
|
} // isBranch, isTerminator, isBarrier
|
|
|
|
// FIXME: should be able to write a pattern for ARMBrcond, but can't use
|
|
// a two-value operand where a dag node expects two operands. :(
|
|
let isBranch = 1, isTerminator = 1 in
|
|
def t2Bcc : T2I<(outs), (ins brtarget:$target), IIC_Br,
|
|
"b", ".w\t$target",
|
|
[/*(ARMbrcond bb:$target, imm:$cc)*/]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
}
|
|
|
|
|
|
// IT block
|
|
def t2IT : Thumb2XI<(outs), (ins it_pred:$cc, it_mask:$mask),
|
|
AddrModeNone, Size2Bytes, IIC_iALUx,
|
|
"it$mask\t$cc", "", []> {
|
|
// 16-bit instruction.
|
|
let Inst{31-16} = 0x0000;
|
|
let Inst{15-8} = 0b10111111;
|
|
}
|
|
|
|
// Branch and Exchange Jazelle -- for disassembly only
|
|
// Rm = Inst{19-16}
|
|
def t2BXJ : T2I<(outs), (ins GPR:$func), NoItinerary, "bxj", "\t$func",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0;
|
|
let Inst{25-20} = 0b111100;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
}
|
|
|
|
// Change Processor State is a system instruction -- for disassembly only.
|
|
// The singleton $opt operand contains the following information:
|
|
// opt{4-0} = mode from Inst{4-0}
|
|
// opt{5} = changemode from Inst{17}
|
|
// opt{8-6} = AIF from Inst{8-6}
|
|
// opt{10-9} = imod from Inst{19-18} with 0b10 as enable and 0b11 as disable
|
|
def t2CPS : T2XI<(outs),(ins i32imm:$opt), NoItinerary, "cps${opt:cps}",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0;
|
|
let Inst{25-20} = 0b111010;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
}
|
|
|
|
// A6.3.4 Branches and miscellaneous control
|
|
// Table A6-14 Change Processor State, and hint instructions
|
|
// Helper class for disassembly only.
|
|
class T2I_hint<bits<8> op7_0, string opc, string asm>
|
|
: T2I<(outs), (ins), NoItinerary, opc, asm,
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-20} = 0xf3a;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{10-8} = 0b000;
|
|
let Inst{7-0} = op7_0;
|
|
}
|
|
|
|
def t2NOP : T2I_hint<0b00000000, "nop", ".w">;
|
|
def t2YIELD : T2I_hint<0b00000001, "yield", ".w">;
|
|
def t2WFE : T2I_hint<0b00000010, "wfe", ".w">;
|
|
def t2WFI : T2I_hint<0b00000011, "wfi", ".w">;
|
|
def t2SEV : T2I_hint<0b00000100, "sev", ".w">;
|
|
|
|
def t2DBG : T2I<(outs),(ins i32imm:$opt), NoItinerary, "dbg", "\t$opt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-20} = 0xf3a;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{10-8} = 0b000;
|
|
let Inst{7-4} = 0b1111;
|
|
}
|
|
|
|
// Secure Monitor Call is a system instruction -- for disassembly only
|
|
// Option = Inst{19-16}
|
|
def t2SMC : T2I<(outs), (ins i32imm:$opt), NoItinerary, "smc", "\t$opt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26-20} = 0b1111111;
|
|
let Inst{15-12} = 0b1000;
|
|
}
|
|
|
|
// Store Return State is a system instruction -- for disassembly only
|
|
def t2SRSDBW : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp!, $mode",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000010; // W = 1
|
|
}
|
|
|
|
def t2SRSDB : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp, $mode",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000000; // W = 0
|
|
}
|
|
|
|
def t2SRSIAW : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsia","\tsp!, $mode",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0011010; // W = 1
|
|
}
|
|
|
|
def t2SRSIA : T2I<(outs), (ins i32imm:$mode),NoItinerary,"srsia","\tsp, $mode",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0011000; // W = 0
|
|
}
|
|
|
|
// Return From Exception is a system instruction -- for disassembly only
|
|
def t2RFEDBW : T2I<(outs), (ins GPR:$base), NoItinerary, "rfedb", "\t$base!",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000011; // W = 1
|
|
}
|
|
|
|
def t2RFEDB : T2I<(outs), (ins GPR:$base), NoItinerary, "rfeab", "\t$base",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000001; // W = 0
|
|
}
|
|
|
|
def t2RFEIAW : T2I<(outs), (ins GPR:$base), NoItinerary, "rfeia", "\t$base!",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0011011; // W = 1
|
|
}
|
|
|
|
def t2RFEIA : T2I<(outs), (ins GPR:$base), NoItinerary, "rfeia", "\t$base",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0011001; // W = 0
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Non-Instruction Patterns
|
|
//
|
|
|
|
// Two piece so_imms.
|
|
def : T2Pat<(or GPR:$LHS, t2_so_imm2part:$RHS),
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(t2ORRri (t2ORRri GPR:$LHS, (t2_so_imm2part_1 imm:$RHS)),
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(t2_so_imm2part_2 imm:$RHS))>;
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def : T2Pat<(xor GPR:$LHS, t2_so_imm2part:$RHS),
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(t2EORri (t2EORri GPR:$LHS, (t2_so_imm2part_1 imm:$RHS)),
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(t2_so_imm2part_2 imm:$RHS))>;
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def : T2Pat<(add GPR:$LHS, t2_so_imm2part:$RHS),
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(t2ADDri (t2ADDri GPR:$LHS, (t2_so_imm2part_1 imm:$RHS)),
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(t2_so_imm2part_2 imm:$RHS))>;
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def : T2Pat<(add GPR:$LHS, t2_so_neg_imm2part:$RHS),
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(t2SUBri (t2SUBri GPR:$LHS, (t2_so_neg_imm2part_1 imm:$RHS)),
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(t2_so_neg_imm2part_2 imm:$RHS))>;
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// 32-bit immediate using movw + movt.
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// This is a single pseudo instruction to make it re-materializable. Remove
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// when we can do generalized remat.
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let isReMaterializable = 1 in
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def t2MOVi32imm : T2Ix2<(outs GPR:$dst), (ins i32imm:$src), IIC_iMOVi,
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"movw", "\t$dst, ${src:lo16}\n\tmovt${p}\t$dst, ${src:hi16}",
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[(set GPR:$dst, (i32 imm:$src))]>;
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// ConstantPool, GlobalAddress, and JumpTable
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def : T2Pat<(ARMWrapper tglobaladdr :$dst), (t2LEApcrel tglobaladdr :$dst)>,
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Requires<[IsThumb2, DontUseMovt]>;
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def : T2Pat<(ARMWrapper tconstpool :$dst), (t2LEApcrel tconstpool :$dst)>;
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def : T2Pat<(ARMWrapper tglobaladdr :$dst), (t2MOVi32imm tglobaladdr :$dst)>,
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Requires<[IsThumb2, UseMovt]>;
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def : T2Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
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(t2LEApcrelJT tjumptable:$dst, imm:$id)>;
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// Pseudo instruction that combines ldr from constpool and add pc. This should
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// be expanded into two instructions late to allow if-conversion and
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// scheduling.
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let canFoldAsLoad = 1, isReMaterializable = 1 in
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def t2LDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
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NoItinerary, "@ ldr.w\t$dst, $addr\n$cp:\n\tadd\t$dst, pc",
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[(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
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imm:$cp))]>,
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Requires<[IsThumb2]>;
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//===----------------------------------------------------------------------===//
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// Move between special register and ARM core register -- for disassembly only
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//
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// Rd = Instr{11-8}
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def t2MRS : T2I<(outs GPR:$dst), (ins), NoItinerary, "mrs", "\t$dst, cpsr",
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[/* For disassembly only; pattern left blank */]> {
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let Inst{31-27} = 0b11110;
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let Inst{26} = 0;
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let Inst{25-21} = 0b11111;
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let Inst{20} = 0; // The R bit.
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let Inst{15-14} = 0b10;
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let Inst{12} = 0;
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}
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// Rd = Instr{11-8}
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def t2MRSsys : T2I<(outs GPR:$dst), (ins), NoItinerary, "mrs", "\t$dst, spsr",
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[/* For disassembly only; pattern left blank */]> {
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let Inst{31-27} = 0b11110;
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let Inst{26} = 0;
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let Inst{25-21} = 0b11111;
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let Inst{20} = 1; // The R bit.
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let Inst{15-14} = 0b10;
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let Inst{12} = 0;
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}
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// FIXME: mask is ignored for the time being.
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// Rn = Inst{19-16}
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def t2MSR : T2I<(outs), (ins GPR:$src), NoItinerary, "msr", "\tcpsr, $src",
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[/* For disassembly only; pattern left blank */]> {
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let Inst{31-27} = 0b11110;
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let Inst{26} = 0;
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let Inst{25-21} = 0b11100;
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let Inst{20} = 0; // The R bit.
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let Inst{15-14} = 0b10;
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let Inst{12} = 0;
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}
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// FIXME: mask is ignored for the time being.
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// Rn = Inst{19-16}
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def t2MSRsys : T2I<(outs), (ins GPR:$src), NoItinerary, "msr", "\tspsr, $src",
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[/* For disassembly only; pattern left blank */]> {
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let Inst{31-27} = 0b11110;
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let Inst{26} = 0;
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let Inst{25-21} = 0b11100;
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let Inst{20} = 1; // The R bit.
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let Inst{15-14} = 0b10;
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let Inst{12} = 0;
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}
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