llvm-6502/lib/Target/ARM/ARMInstrThumb.td
Bob Wilson 815baebe1c Change ARM ld/st multiple instructions to have variant instructions for
writebacks to the address register.  This gets rid of the hack that the
first register on the list was the magic writeback register operand.  There
was an implicit constraint that if that operand was not reg0 it had to match
the base register operand.  The post-RA scheduler's antidependency breaker
did not understand that constraint and sometimes changed one without the
other.  This also fixes Radar 7495976 and should help the verifier work
better for ARM code.

There are now new ld/st instructions explicit writeback operands and explicit
constraints that tie those registers together.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98409 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-13 01:08:20 +00:00

1017 lines
39 KiB
TableGen

//===- ARMInstrThumb.td - Thumb support for ARM ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file describes the Thumb instruction set.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Thumb specific DAG Nodes.
//
def ARMtcall : SDNode<"ARMISD::tCALL", SDT_ARMcall,
[SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;
def imm_neg_XFORM : SDNodeXForm<imm, [{
return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
}]>;
def imm_comp_XFORM : SDNodeXForm<imm, [{
return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
}]>;
/// imm0_7 predicate - True if the 32-bit immediate is in the range [0,7].
def imm0_7 : PatLeaf<(i32 imm), [{
return (uint32_t)N->getZExtValue() < 8;
}]>;
def imm0_7_neg : PatLeaf<(i32 imm), [{
return (uint32_t)-N->getZExtValue() < 8;
}], imm_neg_XFORM>;
def imm0_255 : PatLeaf<(i32 imm), [{
return (uint32_t)N->getZExtValue() < 256;
}]>;
def imm0_255_comp : PatLeaf<(i32 imm), [{
return ~((uint32_t)N->getZExtValue()) < 256;
}]>;
def imm8_255 : PatLeaf<(i32 imm), [{
return (uint32_t)N->getZExtValue() >= 8 && (uint32_t)N->getZExtValue() < 256;
}]>;
def imm8_255_neg : PatLeaf<(i32 imm), [{
unsigned Val = -N->getZExtValue();
return Val >= 8 && Val < 256;
}], imm_neg_XFORM>;
// Break imm's up into two pieces: an immediate + a left shift.
// This uses thumb_immshifted to match and thumb_immshifted_val and
// thumb_immshifted_shamt to get the val/shift pieces.
def thumb_immshifted : PatLeaf<(imm), [{
return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
}]>;
def thumb_immshifted_val : SDNodeXForm<imm, [{
unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
return CurDAG->getTargetConstant(V, MVT::i32);
}]>;
def thumb_immshifted_shamt : SDNodeXForm<imm, [{
unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
return CurDAG->getTargetConstant(V, MVT::i32);
}]>;
// Scaled 4 immediate.
def t_imm_s4 : Operand<i32> {
let PrintMethod = "printThumbS4ImmOperand";
}
// Define Thumb specific addressing modes.
// t_addrmode_rr := reg + reg
//
def t_addrmode_rr : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
let PrintMethod = "printThumbAddrModeRROperand";
let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
}
// t_addrmode_s4 := reg + reg
// reg + imm5 * 4
//
def t_addrmode_s4 : Operand<i32>,
ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
let PrintMethod = "printThumbAddrModeS4Operand";
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
}
// t_addrmode_s2 := reg + reg
// reg + imm5 * 2
//
def t_addrmode_s2 : Operand<i32>,
ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
let PrintMethod = "printThumbAddrModeS2Operand";
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
}
// t_addrmode_s1 := reg + reg
// reg + imm5
//
def t_addrmode_s1 : Operand<i32>,
ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
let PrintMethod = "printThumbAddrModeS1Operand";
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
}
// t_addrmode_sp := sp + imm8 * 4
//
def t_addrmode_sp : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
let PrintMethod = "printThumbAddrModeSPOperand";
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
//===----------------------------------------------------------------------===//
// Miscellaneous Instructions.
//
// FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
// from removing one half of the matched pairs. That breaks PEI, which assumes
// these will always be in pairs, and asserts if it finds otherwise. Better way?
let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
def tADJCALLSTACKUP :
PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
"@ tADJCALLSTACKUP $amt1",
[(ARMcallseq_end imm:$amt1, imm:$amt2)]>, Requires<[IsThumb1Only]>;
def tADJCALLSTACKDOWN :
PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
"@ tADJCALLSTACKDOWN $amt",
[(ARMcallseq_start imm:$amt)]>, Requires<[IsThumb1Only]>;
}
def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b11;
let Inst{7-0} = 0b00000000;
}
def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b11;
let Inst{7-0} = 0b00010000;
}
def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b11;
let Inst{7-0} = 0b00100000;
}
def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b11;
let Inst{7-0} = 0b00110000;
}
def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b11;
let Inst{7-0} = 0b01000000;
}
def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101101> {
let Inst{9-5} = 0b10010;
let Inst{3} = 1;
}
def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101101> {
let Inst{9-5} = 0b10010;
let Inst{3} = 0;
}
// The i32imm operand $val can be used by a debugger to store more information
// about the breakpoint.
def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
let Inst{9-8} = 0b10;
}
// Change Processor State is a system instruction -- for disassembly only.
// The singleton $opt operand contains the following information:
// opt{4-0} = mode ==> don't care
// opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
// opt{8-6} = AIF from Inst{2-0}
// opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
//
// The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
// CPS which has more options.
def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
[/* For disassembly only; pattern left blank */]>,
T1Misc<0b0110011>;
// For both thumb1 and thumb2.
let isNotDuplicable = 1 in
def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr,
"\n$cp:\n\tadd\t$dst, pc",
[(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
T1Special<{0,0,?,?}> {
let Inst{6-3} = 0b1111; // A8.6.6 Rm = pc
}
// PC relative add.
def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
"add\t$dst, pc, $rhs", []>,
T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
// ADD rd, sp, #imm8
def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
"add\t$dst, $sp, $rhs", []>,
T1Encoding<{1,0,1,0,1,?}>; // A6.2 & A8.6.8
// ADD sp, sp, #imm7
def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
"add\t$dst, $rhs", []>,
T1Misc<{0,0,0,0,0,?,?}>; // A6.2.5 & A8.6.8
// SUB sp, sp, #imm7
def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
"sub\t$dst, $rhs", []>,
T1Misc<{0,0,0,0,1,?,?}>; // A6.2.5 & A8.6.215
// ADD rm, sp
def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
"add\t$dst, $rhs", []>,
T1Special<{0,0,?,?}> {
let Inst{6-3} = 0b1101; // A8.6.9 Encoding T1
}
// ADD sp, rm
def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
"add\t$dst, $rhs", []>,
T1Special<{0,0,?,?}> {
// A8.6.9 Encoding T2
let Inst{7} = 1;
let Inst{2-0} = 0b101;
}
// Pseudo instruction that will expand into a tSUBspi + a copy.
let usesCustomInserter = 1 in { // Expanded after instruction selection.
def tSUBspi_ : PseudoInst<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs),
NoItinerary, "@ sub\t$dst, $rhs", []>;
def tADDspr_ : PseudoInst<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs),
NoItinerary, "@ add\t$dst, $rhs", []>;
let Defs = [CPSR] in
def tANDsp : PseudoInst<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs),
NoItinerary, "@ and\t$dst, $rhs", []>;
} // usesCustomInserter
//===----------------------------------------------------------------------===//
// Control Flow Instructions.
//
let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr", [(ARMretflag)]>,
T1Special<{1,1,0,?}> { // A6.2.3 & A8.6.25
let Inst{6-3} = 0b1110; // Rm = lr
}
// Alternative return instruction used by vararg functions.
def tBX_RET_vararg : TI<(outs), (ins tGPR:$target), IIC_Br, "bx\t$target",[]>,
T1Special<{1,1,0,?}>; // A6.2.3 & A8.6.25
}
// Indirect branches
let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
def tBRIND : TI<(outs), (ins GPR:$dst), IIC_Br, "mov\tpc, $dst",
[(brind GPR:$dst)]>,
T1Special<{1,0,1,?}> {
// <Rd> = Inst{7:2-0} = pc
let Inst{2-0} = 0b111;
}
}
// FIXME: remove when we have a way to marking a MI with these properties.
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
hasExtraDefRegAllocReq = 1 in
def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$dsts, variable_ops), IIC_Br,
"pop${p}\t$dsts", []>,
T1Misc<{1,1,0,?,?,?,?}>;
let isCall = 1,
Defs = [R0, R1, R2, R3, R12, LR,
D0, D1, D2, D3, D4, D5, D6, D7,
D16, D17, D18, D19, D20, D21, D22, D23,
D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
// Also used for Thumb2
def tBL : TIx2<0b11110, 0b11, 1,
(outs), (ins i32imm:$func, variable_ops), IIC_Br,
"bl\t${func:call}",
[(ARMtcall tglobaladdr:$func)]>,
Requires<[IsThumb, IsNotDarwin]>;
// ARMv5T and above, also used for Thumb2
def tBLXi : TIx2<0b11110, 0b11, 0,
(outs), (ins i32imm:$func, variable_ops), IIC_Br,
"blx\t${func:call}",
[(ARMcall tglobaladdr:$func)]>,
Requires<[IsThumb, HasV5T, IsNotDarwin]>;
// Also used for Thumb2
def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
"blx\t$func",
[(ARMtcall GPR:$func)]>,
Requires<[IsThumb, HasV5T, IsNotDarwin]>,
T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
// ARMv4T
def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
(outs), (ins tGPR:$func, variable_ops), IIC_Br,
"mov\tlr, pc\n\tbx\t$func",
[(ARMcall_nolink tGPR:$func)]>,
Requires<[IsThumb1Only, IsNotDarwin]>;
}
// On Darwin R9 is call-clobbered.
let isCall = 1,
Defs = [R0, R1, R2, R3, R9, R12, LR,
D0, D1, D2, D3, D4, D5, D6, D7,
D16, D17, D18, D19, D20, D21, D22, D23,
D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
// Also used for Thumb2
def tBLr9 : TIx2<0b11110, 0b11, 1,
(outs), (ins i32imm:$func, variable_ops), IIC_Br,
"bl\t${func:call}",
[(ARMtcall tglobaladdr:$func)]>,
Requires<[IsThumb, IsDarwin]>;
// ARMv5T and above, also used for Thumb2
def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
(outs), (ins i32imm:$func, variable_ops), IIC_Br,
"blx\t${func:call}",
[(ARMcall tglobaladdr:$func)]>,
Requires<[IsThumb, HasV5T, IsDarwin]>;
// Also used for Thumb2
def tBLXr_r9 : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
"blx\t$func",
[(ARMtcall GPR:$func)]>,
Requires<[IsThumb, HasV5T, IsDarwin]>,
T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24
// ARMv4T
def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
(outs), (ins tGPR:$func, variable_ops), IIC_Br,
"mov\tlr, pc\n\tbx\t$func",
[(ARMcall_nolink tGPR:$func)]>,
Requires<[IsThumb1Only, IsDarwin]>;
}
let isBranch = 1, isTerminator = 1 in {
let isBarrier = 1 in {
let isPredicable = 1 in
def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
"b\t$target", [(br bb:$target)]>,
T1Encoding<{1,1,1,0,0,?}>;
// Far jump
let Defs = [LR] in
def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
"bl\t$target\t@ far jump",[]>;
def tBR_JTr : T1JTI<(outs),
(ins tGPR:$target, jtblock_operand:$jt, i32imm:$id),
IIC_Br, "mov\tpc, $target\n\t.align\t2\n$jt",
[(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
Encoding16 {
let Inst{15-7} = 0b010001101;
let Inst{2-0} = 0b111;
}
}
}
// FIXME: should be able to write a pattern for ARMBrcond, but can't use
// a two-value operand where a dag node expects two operands. :(
let isBranch = 1, isTerminator = 1 in
def tBcc : T1I<(outs), (ins brtarget:$target, pred:$cc), IIC_Br,
"b$cc\t$target",
[/*(ARMbrcond bb:$target, imm:$cc)*/]>,
T1Encoding<{1,1,0,1,?,?}>;
// Compare and branch on zero / non-zero
let isBranch = 1, isTerminator = 1 in {
def tCBZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
"cbz\t$cmp, $target", []>,
T1Misc<{0,0,?,1,?,?,?}>;
def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
"cbnz\t$cmp, $target", []>,
T1Misc<{1,0,?,1,?,?,?}>;
}
// A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
// A8.6.16 B: Encoding T1
// If Inst{11-8} == 0b1111 then SEE SVC
let isCall = 1 in {
def tSVC : T1pI<(outs), (ins i32imm:$svc), IIC_Br, "svc", "\t$svc", []>,
Encoding16 {
let Inst{15-12} = 0b1101;
let Inst{11-8} = 0b1111;
}
}
// A8.6.16 B: Encoding T1 -- for disassembly only
// If Inst{11-8} == 0b1110 then UNDEFINED
def tTRAP : T1I<(outs), (ins), IIC_Br, "trap", []>, Encoding16 {
let Inst{15-12} = 0b1101;
let Inst{11-8} = 0b1110;
}
//===----------------------------------------------------------------------===//
// Load Store Instructions.
//
let canFoldAsLoad = 1, isReMaterializable = 1 in
def tLDR : T1pI4<(outs tGPR:$dst), (ins t_addrmode_s4:$addr), IIC_iLoadr,
"ldr", "\t$dst, $addr",
[(set tGPR:$dst, (load t_addrmode_s4:$addr))]>,
T1LdSt<0b100>;
def tLDRi: T1pI4<(outs tGPR:$dst), (ins t_addrmode_s4:$addr), IIC_iLoadr,
"ldr", "\t$dst, $addr",
[]>,
T1LdSt4Imm<{1,?,?}>;
def tLDRB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoadr,
"ldrb", "\t$dst, $addr",
[(set tGPR:$dst, (zextloadi8 t_addrmode_s1:$addr))]>,
T1LdSt<0b110>;
def tLDRBi: T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoadr,
"ldrb", "\t$dst, $addr",
[]>,
T1LdSt1Imm<{1,?,?}>;
def tLDRH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoadr,
"ldrh", "\t$dst, $addr",
[(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>,
T1LdSt<0b101>;
def tLDRHi: T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoadr,
"ldrh", "\t$dst, $addr",
[]>,
T1LdSt2Imm<{1,?,?}>;
let AddedComplexity = 10 in
def tLDRSB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoadr,
"ldrsb", "\t$dst, $addr",
[(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>,
T1LdSt<0b011>;
let AddedComplexity = 10 in
def tLDRSH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoadr,
"ldrsh", "\t$dst, $addr",
[(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>,
T1LdSt<0b111>;
let canFoldAsLoad = 1 in
def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoadi,
"ldr", "\t$dst, $addr",
[(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
T1LdStSP<{1,?,?}>;
// Special instruction for restore. It cannot clobber condition register
// when it's expanded by eliminateCallFramePseudoInstr().
let canFoldAsLoad = 1, mayLoad = 1 in
def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoadi,
"ldr", "\t$dst, $addr", []>,
T1LdStSP<{1,?,?}>;
// Load tconstpool
// FIXME: Use ldr.n to work around a Darwin assembler bug.
let canFoldAsLoad = 1, isReMaterializable = 1 in
def tLDRpci : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoadi,
"ldr", ".n\t$dst, $addr",
[(set tGPR:$dst, (load (ARMWrapper tconstpool:$addr)))]>,
T1Encoding<{0,1,0,0,1,?}>; // A6.2 & A8.6.59
// Special LDR for loads from non-pc-relative constpools.
let canFoldAsLoad = 1, mayLoad = 1, isReMaterializable = 1 in
def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoadi,
"ldr", "\t$dst, $addr", []>,
T1LdStSP<{1,?,?}>;
def tSTR : T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStorer,
"str", "\t$src, $addr",
[(store tGPR:$src, t_addrmode_s4:$addr)]>,
T1LdSt<0b000>;
def tSTRi: T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStorer,
"str", "\t$src, $addr",
[]>,
T1LdSt4Imm<{0,?,?}>;
def tSTRB : T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStorer,
"strb", "\t$src, $addr",
[(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>,
T1LdSt<0b010>;
def tSTRBi: T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStorer,
"strb", "\t$src, $addr",
[]>,
T1LdSt1Imm<{0,?,?}>;
def tSTRH : T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStorer,
"strh", "\t$src, $addr",
[(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>,
T1LdSt<0b001>;
def tSTRHi: T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStorer,
"strh", "\t$src, $addr",
[]>,
T1LdSt2Imm<{0,?,?}>;
def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStorei,
"str", "\t$src, $addr",
[(store tGPR:$src, t_addrmode_sp:$addr)]>,
T1LdStSP<{0,?,?}>;
let mayStore = 1 in {
// Special instruction for spill. It cannot clobber condition register
// when it's expanded by eliminateCallFramePseudoInstr().
def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStorei,
"str", "\t$src, $addr", []>,
T1LdStSP<{0,?,?}>;
}
//===----------------------------------------------------------------------===//
// Load / store multiple Instructions.
//
// These requires base address to be written back or one of the loaded regs.
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in {
def tLDM : T1I<(outs),
(ins addrmode4:$addr, pred:$p, reglist:$dsts, variable_ops),
IIC_iLoadm,
"ldm${addr:submode}${p}\t$addr, $dsts", []>,
T1Encoding<{1,1,0,0,1,?}>; // A6.2 & A8.6.53
def tLDM_UPD : T1It<(outs tGPR:$wb),
(ins addrmode4:$addr, pred:$p, reglist:$dsts, variable_ops),
IIC_iLoadm,
"ldm${addr:submode}${p}\t$addr, $dsts",
"$addr.addr = $wb", []>,
T1Encoding<{1,1,0,0,1,?}>; // A6.2 & A8.6.53
} // mayLoad, hasExtraDefRegAllocReq
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
def tSTM_UPD : T1It<(outs tGPR:$wb),
(ins addrmode4:$addr, pred:$p, reglist:$srcs, variable_ops),
IIC_iStorem,
"stm${addr:submode}${p}\t$addr, $srcs",
"$addr.addr = $wb", []>,
T1Encoding<{1,1,0,0,0,?}>; // A6.2 & A8.6.189
let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
def tPOP : T1I<(outs), (ins pred:$p, reglist:$dsts, variable_ops), IIC_Br,
"pop${p}\t$dsts", []>,
T1Misc<{1,1,0,?,?,?,?}>;
let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
def tPUSH : T1I<(outs), (ins pred:$p, reglist:$srcs, variable_ops), IIC_Br,
"push${p}\t$srcs", []>,
T1Misc<{0,1,0,?,?,?,?}>;
//===----------------------------------------------------------------------===//
// Arithmetic Instructions.
//
// Add with carry register
let isCommutable = 1, Uses = [CPSR] in
def tADC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"adc", "\t$dst, $rhs",
[(set tGPR:$dst, (adde tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0101>;
// Add immediate
def tADDi3 : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
"add", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (add tGPR:$lhs, imm0_7:$rhs))]>,
T1General<0b01110>;
def tADDi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
"add", "\t$dst, $rhs",
[(set tGPR:$dst, (add tGPR:$lhs, imm8_255:$rhs))]>,
T1General<{1,1,0,?,?}>;
// Add register
let isCommutable = 1 in
def tADDrr : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"add", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (add tGPR:$lhs, tGPR:$rhs))]>,
T1General<0b01100>;
let neverHasSideEffects = 1 in
def tADDhirr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
"add", "\t$dst, $rhs", []>,
T1Special<{0,0,?,?}>;
// And register
let isCommutable = 1 in
def tAND : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"and", "\t$dst, $rhs",
[(set tGPR:$dst, (and tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0000>;
// ASR immediate
def tASRri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
"asr", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (sra tGPR:$lhs, (i32 imm:$rhs)))]>,
T1General<{0,1,0,?,?}>;
// ASR register
def tASRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
"asr", "\t$dst, $rhs",
[(set tGPR:$dst, (sra tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0100>;
// BIC register
def tBIC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"bic", "\t$dst, $rhs",
[(set tGPR:$dst, (and tGPR:$lhs, (not tGPR:$rhs)))]>,
T1DataProcessing<0b1110>;
// CMN register
let Defs = [CPSR] in {
//FIXME: Disable CMN, as CCodes are backwards from compare expectations
// Compare-to-zero still works out, just not the relationals
//def tCMN : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
// "cmn", "\t$lhs, $rhs",
// [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>,
// T1DataProcessing<0b1011>;
def tCMNz : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
"cmn", "\t$lhs, $rhs",
[(ARMcmpZ tGPR:$lhs, (ineg tGPR:$rhs))]>,
T1DataProcessing<0b1011>;
}
// CMP immediate
let Defs = [CPSR] in {
def tCMPi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
"cmp", "\t$lhs, $rhs",
[(ARMcmp tGPR:$lhs, imm0_255:$rhs)]>,
T1General<{1,0,1,?,?}>;
def tCMPzi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
"cmp", "\t$lhs, $rhs",
[(ARMcmpZ tGPR:$lhs, imm0_255:$rhs)]>,
T1General<{1,0,1,?,?}>;
}
// CMP register
let Defs = [CPSR] in {
def tCMPr : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
"cmp", "\t$lhs, $rhs",
[(ARMcmp tGPR:$lhs, tGPR:$rhs)]>,
T1DataProcessing<0b1010>;
def tCMPzr : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
"cmp", "\t$lhs, $rhs",
[(ARMcmpZ tGPR:$lhs, tGPR:$rhs)]>,
T1DataProcessing<0b1010>;
def tCMPhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
"cmp", "\t$lhs, $rhs", []>,
T1Special<{0,1,?,?}>;
def tCMPzhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
"cmp", "\t$lhs, $rhs", []>,
T1Special<{0,1,?,?}>;
}
// XOR register
let isCommutable = 1 in
def tEOR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"eor", "\t$dst, $rhs",
[(set tGPR:$dst, (xor tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0001>;
// LSL immediate
def tLSLri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
"lsl", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (shl tGPR:$lhs, (i32 imm:$rhs)))]>,
T1General<{0,0,0,?,?}>;
// LSL register
def tLSLrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
"lsl", "\t$dst, $rhs",
[(set tGPR:$dst, (shl tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0010>;
// LSR immediate
def tLSRri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
"lsr", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (srl tGPR:$lhs, (i32 imm:$rhs)))]>,
T1General<{0,0,1,?,?}>;
// LSR register
def tLSRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
"lsr", "\t$dst, $rhs",
[(set tGPR:$dst, (srl tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0011>;
// move register
def tMOVi8 : T1sI<(outs tGPR:$dst), (ins i32imm:$src), IIC_iMOVi,
"mov", "\t$dst, $src",
[(set tGPR:$dst, imm0_255:$src)]>,
T1General<{1,0,0,?,?}>;
// TODO: A7-73: MOV(2) - mov setting flag.
let neverHasSideEffects = 1 in {
// FIXME: Make this predicable.
def tMOVr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
"mov\t$dst, $src", []>,
T1Special<0b1000>;
let Defs = [CPSR] in
def tMOVSr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
"movs\t$dst, $src", []>, Encoding16 {
let Inst{15-6} = 0b0000000000;
}
// FIXME: Make these predicable.
def tMOVgpr2tgpr : T1I<(outs tGPR:$dst), (ins GPR:$src), IIC_iMOVr,
"mov\t$dst, $src", []>,
T1Special<{1,0,0,?}>;
def tMOVtgpr2gpr : T1I<(outs GPR:$dst), (ins tGPR:$src), IIC_iMOVr,
"mov\t$dst, $src", []>,
T1Special<{1,0,?,0}>;
def tMOVgpr2gpr : T1I<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
"mov\t$dst, $src", []>,
T1Special<{1,0,?,?}>;
} // neverHasSideEffects
// multiply register
let isCommutable = 1 in
def tMUL : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMUL32,
"mul", "\t$dst, $rhs, $dst", /* A8.6.105 MUL Encoding T1 */
[(set tGPR:$dst, (mul tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b1101>;
// move inverse register
def tMVN : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
"mvn", "\t$dst, $src",
[(set tGPR:$dst, (not tGPR:$src))]>,
T1DataProcessing<0b1111>;
// bitwise or register
let isCommutable = 1 in
def tORR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"orr", "\t$dst, $rhs",
[(set tGPR:$dst, (or tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b1100>;
// swaps
def tREV : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"rev", "\t$dst, $src",
[(set tGPR:$dst, (bswap tGPR:$src))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{1,0,1,0,0,0,?}>;
def tREV16 : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"rev16", "\t$dst, $src",
[(set tGPR:$dst,
(or (and (srl tGPR:$src, (i32 8)), 0xFF),
(or (and (shl tGPR:$src, (i32 8)), 0xFF00),
(or (and (srl tGPR:$src, (i32 8)), 0xFF0000),
(and (shl tGPR:$src, (i32 8)), 0xFF000000)))))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{1,0,1,0,0,1,?}>;
def tREVSH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"revsh", "\t$dst, $src",
[(set tGPR:$dst,
(sext_inreg
(or (srl (and tGPR:$src, 0xFF00), (i32 8)),
(shl tGPR:$src, (i32 8))), i16))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{1,0,1,0,1,1,?}>;
// rotate right register
def tROR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
"ror", "\t$dst, $rhs",
[(set tGPR:$dst, (rotr tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0111>;
// negate register
def tRSB : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iALUi,
"rsb", "\t$dst, $src, #0",
[(set tGPR:$dst, (ineg tGPR:$src))]>,
T1DataProcessing<0b1001>;
// Subtract with carry register
let Uses = [CPSR] in
def tSBC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"sbc", "\t$dst, $rhs",
[(set tGPR:$dst, (sube tGPR:$lhs, tGPR:$rhs))]>,
T1DataProcessing<0b0110>;
// Subtract immediate
def tSUBi3 : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
"sub", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (add tGPR:$lhs, imm0_7_neg:$rhs))]>,
T1General<0b01111>;
def tSUBi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
"sub", "\t$dst, $rhs",
[(set tGPR:$dst, (add tGPR:$lhs, imm8_255_neg:$rhs))]>,
T1General<{1,1,1,?,?}>;
// subtract register
def tSUBrr : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
"sub", "\t$dst, $lhs, $rhs",
[(set tGPR:$dst, (sub tGPR:$lhs, tGPR:$rhs))]>,
T1General<0b01101>;
// TODO: A7-96: STMIA - store multiple.
// sign-extend byte
def tSXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"sxtb", "\t$dst, $src",
[(set tGPR:$dst, (sext_inreg tGPR:$src, i8))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{0,0,1,0,0,1,?}>;
// sign-extend short
def tSXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"sxth", "\t$dst, $src",
[(set tGPR:$dst, (sext_inreg tGPR:$src, i16))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{0,0,1,0,0,0,?}>;
// test
let isCommutable = 1, Defs = [CPSR] in
def tTST : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
"tst", "\t$lhs, $rhs",
[(ARMcmpZ (and tGPR:$lhs, tGPR:$rhs), 0)]>,
T1DataProcessing<0b1000>;
// zero-extend byte
def tUXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"uxtb", "\t$dst, $src",
[(set tGPR:$dst, (and tGPR:$src, 0xFF))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{0,0,1,0,1,1,?}>;
// zero-extend short
def tUXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
"uxth", "\t$dst, $src",
[(set tGPR:$dst, (and tGPR:$src, 0xFFFF))]>,
Requires<[IsThumb1Only, HasV6]>,
T1Misc<{0,0,1,0,1,0,?}>;
// Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
// Expanded after instruction selection into a branch sequence.
let usesCustomInserter = 1 in // Expanded after instruction selection.
def tMOVCCr_pseudo :
PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
NoItinerary, "@ tMOVCCr $cc",
[/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
// 16-bit movcc in IT blocks for Thumb2.
def tMOVCCr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iCMOVr,
"mov", "\t$dst, $rhs", []>,
T1Special<{1,0,?,?}>;
def tMOVCCi : T1pIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMOVi,
"mov", "\t$dst, $rhs", []>,
T1General<{1,0,0,?,?}>;
// tLEApcrel - Load a pc-relative address into a register without offending the
// assembler.
def tLEApcrel : T1I<(outs tGPR:$dst), (ins i32imm:$label, pred:$p), IIC_iALUi,
"adr$p\t$dst, #$label", []>,
T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
def tLEApcrelJT : T1I<(outs tGPR:$dst),
(ins i32imm:$label, nohash_imm:$id, pred:$p),
IIC_iALUi, "adr$p\t$dst, #${label}_${id}", []>,
T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
//===----------------------------------------------------------------------===//
// TLS Instructions
//
// __aeabi_read_tp preserves the registers r1-r3.
let isCall = 1,
Defs = [R0, LR] in {
def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
"bl\t__aeabi_read_tp",
[(set R0, ARMthread_pointer)]>;
}
// 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 $val, and we reuse the reg as a scratch.
let Defs =
[ R0, R1, R2, R3, R4, R5, R6, R7, R12 ] in {
def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$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, [$src, #4]\n"
"\tmovs\tr0, #0\n"
"\tb\t1f\n"
"\tmovs\tr0, #1\t@ end eh.setjmp\n"
"1:", "",
[(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
}
//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
//
// Add with carry
def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
(tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
(tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
(tADDrr tGPR:$lhs, tGPR:$rhs)>;
// Subtract with carry
def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
(tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
(tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
(tSUBrr tGPR:$lhs, tGPR:$rhs)>;
// ConstantPool, GlobalAddress
def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
// JumpTable
def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
(tLEApcrelJT tjumptable:$dst, imm:$id)>;
// Direct calls
def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
Requires<[IsThumb, IsNotDarwin]>;
def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
Requires<[IsThumb, IsDarwin]>;
def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
Requires<[IsThumb, HasV5T, IsNotDarwin]>;
def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
Requires<[IsThumb, HasV5T, IsDarwin]>;
// Indirect calls to ARM routines
def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
Requires<[IsThumb, HasV5T, IsNotDarwin]>;
def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
Requires<[IsThumb, HasV5T, IsDarwin]>;
// zextload i1 -> zextload i8
def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
(tLDRB t_addrmode_s1:$addr)>;
// extload -> zextload
def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
// If it's impossible to use [r,r] address mode for sextload, select to
// ldr{b|h} + sxt{b|h} instead.
def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
(tSXTB (tLDRB t_addrmode_s1:$addr))>,
Requires<[IsThumb1Only, HasV6]>;
def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
(tSXTH (tLDRH t_addrmode_s2:$addr))>,
Requires<[IsThumb1Only, HasV6]>;
def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
(tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
(tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
// Large immediate handling.
// Two piece imms.
def : T1Pat<(i32 thumb_immshifted:$src),
(tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
(thumb_immshifted_shamt imm:$src))>;
def : T1Pat<(i32 imm0_255_comp:$src),
(tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
// Pseudo instruction that combines ldr from constpool and add pc. This should
// be expanded into two instructions late to allow if-conversion and
// scheduling.
let isReMaterializable = 1 in
def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
NoItinerary, "@ ldr.n\t$dst, $addr\n$cp:\n\tadd\t$dst, pc",
[(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
imm:$cp))]>,
Requires<[IsThumb1Only]>;