-//===- ARMInstrThumb.td - Thumb support for ARM ------------*- tablegen -*-===//
+//===-- ARMInstrThumb.td - Thumb support for ARM -----------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
[SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
SDNPVariadic]>;
-def imm_sr : Operand<i32>, ImmLeaf<i32, [{
+def imm_sr_XFORM: SDNodeXForm<imm, [{
+ unsigned Imm = N->getZExtValue();
+ return CurDAG->getTargetConstant((Imm == 32 ? 0 : Imm), MVT::i32);
+}]>;
+def ThumbSRImmAsmOperand: AsmOperandClass { let Name = "ImmThumbSR"; }
+def imm_sr : Operand<i32>, PatLeaf<(imm), [{
+ uint64_t Imm = N->getZExtValue();
return Imm > 0 && Imm <= 32;
-}]> {
- let EncoderMethod = "getThumbSRImmOpValue";
- let DecoderMethod = "DecodeThumbSRImm";
+}], imm_sr_XFORM> {
+ let PrintMethod = "printThumbSRImm";
+ let ParserMatchClass = ThumbSRImmAsmOperand;
}
-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);
}]>;
return CurDAG->getTargetConstant(V, MVT::i32);
}]>;
-// ADR instruction labels.
-def t_adrlabel : Operand<i32> {
- let EncoderMethod = "getThumbAdrLabelOpValue";
+// Scaled 4 immediate.
+def t_imm0_1020s4_asmoperand: AsmOperandClass { let Name = "Imm0_1020s4"; }
+def t_imm0_1020s4 : Operand<i32> {
+ let PrintMethod = "printThumbS4ImmOperand";
+ let ParserMatchClass = t_imm0_1020s4_asmoperand;
+ let OperandType = "OPERAND_IMMEDIATE";
}
-// Scaled 4 immediate.
-def t_imm_s4 : Operand<i32> {
+def t_imm0_508s4_asmoperand: AsmOperandClass { let Name = "Imm0_508s4"; }
+def t_imm0_508s4 : Operand<i32> {
let PrintMethod = "printThumbS4ImmOperand";
+ let ParserMatchClass = t_imm0_508s4_asmoperand;
+ let OperandType = "OPERAND_IMMEDIATE";
+}
+// Alias use only, so no printer is necessary.
+def t_imm0_508s4_neg_asmoperand: AsmOperandClass { let Name = "Imm0_508s4Neg"; }
+def t_imm0_508s4_neg : Operand<i32> {
+ let ParserMatchClass = t_imm0_508s4_neg_asmoperand;
let OperandType = "OPERAND_IMMEDIATE";
}
// Define Thumb specific addressing modes.
+// unsigned 8-bit, 2-scaled memory offset
+class OperandUnsignedOffset_b8s2 : AsmOperandClass {
+ let Name = "UnsignedOffset_b8s2";
+ let PredicateMethod = "isUnsignedOffset<8, 2>";
+}
+
+def UnsignedOffset_b8s2 : OperandUnsignedOffset_b8s2;
+
+// thumb style PC relative operand. signed, 8 bits magnitude,
+// two bits shift. can be represented as either [pc, #imm], #imm,
+// or relocatable expression...
+def ThumbMemPC : AsmOperandClass {
+ let Name = "ThumbMemPC";
+}
+
let OperandType = "OPERAND_PCREL" in {
def t_brtarget : Operand<OtherVT> {
let EncoderMethod = "getThumbBRTargetOpValue";
let DecoderMethod = "DecodeThumbBROperand";
}
+// ADR instruction labels.
+def t_adrlabel : Operand<i32> {
+ let EncoderMethod = "getThumbAdrLabelOpValue";
+ let PrintMethod = "printAdrLabelOperand<2>";
+ let ParserMatchClass = UnsignedOffset_b8s2;
+}
+
def t_bcctarget : Operand<i32> {
let EncoderMethod = "getThumbBCCTargetOpValue";
let DecoderMethod = "DecodeThumbBCCTargetOperand";
let EncoderMethod = "getThumbBLXTargetOpValue";
let DecoderMethod = "DecodeThumbBLXOffset";
}
+
+// t_addrmode_pc := <label> => pc + imm8 * 4
+//
+def t_addrmode_pc : Operand<i32> {
+ let EncoderMethod = "getAddrModePCOpValue";
+ let DecoderMethod = "DecodeThumbAddrModePC";
+ let PrintMethod = "printThumbLdrLabelOperand";
+ let ParserMatchClass = ThumbMemPC;
+}
}
// t_addrmode_rr := reg + reg
ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
let EncoderMethod = "getThumbAddrModeRegRegOpValue";
let PrintMethod = "printThumbAddrModeRROperand";
+ let DecoderMethod = "DecodeThumbAddrModeRR";
+ let ParserMatchClass = t_addrmode_rr_asm_operand;
let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
}
// t_addrmode_rrs := reg + reg
//
+// We use separate scaled versions because the Select* functions need
+// to explicitly check for a matching constant and return false here so that
+// the reg+imm forms will match instead. This is a horrible way to do that,
+// as it forces tight coupling between the methods, but it's how selectiondag
+// currently works.
def t_addrmode_rrs1 : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
let EncoderMethod = "getThumbAddrModeRegRegOpValue";
// t_addrmode_is4 := reg + imm5 * 4
//
+def t_addrmode_is4_asm_operand : AsmOperandClass { let Name = "MemThumbRIs4"; }
def t_addrmode_is4 : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
let EncoderMethod = "getAddrModeISOpValue";
let DecoderMethod = "DecodeThumbAddrModeIS";
let PrintMethod = "printThumbAddrModeImm5S4Operand";
+ let ParserMatchClass = t_addrmode_is4_asm_operand;
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
}
// t_addrmode_is2 := reg + imm5 * 2
//
+def t_addrmode_is2_asm_operand : AsmOperandClass { let Name = "MemThumbRIs2"; }
def t_addrmode_is2 : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
let EncoderMethod = "getAddrModeISOpValue";
let DecoderMethod = "DecodeThumbAddrModeIS";
let PrintMethod = "printThumbAddrModeImm5S2Operand";
+ let ParserMatchClass = t_addrmode_is2_asm_operand;
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
}
// t_addrmode_is1 := reg + imm5
//
+def t_addrmode_is1_asm_operand : AsmOperandClass { let Name = "MemThumbRIs1"; }
def t_addrmode_is1 : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
let EncoderMethod = "getAddrModeISOpValue";
let DecoderMethod = "DecodeThumbAddrModeIS";
let PrintMethod = "printThumbAddrModeImm5S1Operand";
+ let ParserMatchClass = t_addrmode_is1_asm_operand;
let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
}
// t_addrmode_sp := sp + imm8 * 4
//
+// FIXME: This really shouldn't have an explicit SP operand at all. It should
+// be implicit, just like in the instruction encoding itself.
+def t_addrmode_sp_asm_operand : AsmOperandClass { let Name = "MemThumbSPI"; }
def t_addrmode_sp : Operand<i32>,
ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
let EncoderMethod = "getAddrModeThumbSPOpValue";
let DecoderMethod = "DecodeThumbAddrModeSP";
let PrintMethod = "printThumbAddrModeSPOperand";
+ let ParserMatchClass = t_addrmode_sp_asm_operand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
-// t_addrmode_pc := <label> => pc + imm8 * 4
-//
-def t_addrmode_pc : Operand<i32> {
- let EncoderMethod = "getAddrModePCOpValue";
- let DecoderMethod = "DecodeThumbAddrModePC";
-}
-
//===----------------------------------------------------------------------===//
// Miscellaneous Instructions.
//
Requires<[IsThumb, IsThumb1Only]>;
}
-// T1Disassembly - A simple class to make encoding some disassembly patterns
-// easier and less verbose.
-class T1Disassembly<bits<2> op1, bits<8> op2>
+class T1SystemEncoding<bits<8> opc>
: T1Encoding<0b101111> {
- let Inst{9-8} = op1;
- let Inst{7-0} = op2;
+ let Inst{9-8} = 0b11;
+ let Inst{7-0} = opc;
}
-def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b11, 0x00>; // A8.6.110
-
-def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b11, 0x10>; // A8.6.410
-
-def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b11, 0x20>; // A8.6.408
+def tHINT : T1pI<(outs), (ins imm0_15:$imm), NoItinerary, "hint", "\t$imm",
+ [(int_arm_hint imm0_15:$imm)]>,
+ T1SystemEncoding<0x00>,
+ Requires<[IsThumb, HasV6M]> {
+ bits<4> imm;
+ let Inst{7-4} = imm;
+}
-def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b11, 0x30>; // A8.6.409
+class tHintAlias<string Asm, dag Result> : tInstAlias<Asm, Result> {
+ let Predicates = [IsThumb, HasV6M];
+}
-def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b11, 0x40>; // A8.6.157
+def : tHintAlias<"nop$p", (tHINT 0, pred:$p)>; // A8.6.110
+def : tHintAlias<"yield$p", (tHINT 1, pred:$p)>; // A8.6.410
+def : tHintAlias<"wfe$p", (tHINT 2, pred:$p)>; // A8.6.408
+def : tHintAlias<"wfi$p", (tHINT 3, pred:$p)>; // A8.6.409
+def : tHintAlias<"sev$p", (tHINT 4, pred:$p)>; // A8.6.157
+def : tInstAlias<"sevl$p", (tHINT 5, pred:$p)> {
+ let Predicates = [IsThumb2, HasV8];
+}
-// The i32imm operand $val can be used by a debugger to store more information
+// The imm 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$val",
- [/* For disassembly only; pattern left blank */]>,
- T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
+def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
+ []>,
+ T1Encoding<0b101111> {
+ let Inst{9-8} = 0b10;
// A8.6.22
bits<8> val;
let Inst{7-0} = val;
}
+// default immediate for breakpoint mnemonic
+def : InstAlias<"bkpt", (tBKPT 0)>, Requires<[IsThumb]>;
+
+def tHLT : T1I<(outs), (ins imm0_63:$val), NoItinerary, "hlt\t$val",
+ []>, T1Encoding<0b101110>, Requires<[IsThumb, HasV8]> {
+ let Inst{9-6} = 0b1010;
+ bits<6> val;
+ let Inst{5-0} = val;
+}
def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
- []>, T1Encoding<0b101101> {
+ []>, T1Encoding<0b101101>, Requires<[IsNotMClass]>, Deprecated<HasV8Ops> {
bits<1> end;
// A8.6.156
let Inst{9-5} = 0b10010;
// Change Processor State is a system instruction -- for disassembly only.
def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
- NoItinerary, "cps$imod $iflags",
- [/* For disassembly only; pattern left blank */]>,
+ NoItinerary, "cps$imod $iflags", []>,
T1Misc<0b0110011> {
// A8.6.38 & B6.1.1
bit imod;
let isNotDuplicable = 1, isCodeGenOnly = 1 in
def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
[(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
- T1Special<{0,0,?,?}> {
+ T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
// A8.6.6
bits<3> dst;
let Inst{6-3} = 0b1111; // Rm = pc
}
// ADD <Rd>, sp, #<imm8>
-// This is rematerializable, which is particularly useful for taking the
-// address of locals.
-let isReMaterializable = 1 in
-def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
- "add\t$dst, $sp, $rhs", []>,
- T1Encoding<{1,0,1,0,1,?}> {
+// FIXME: This should not be marked as having side effects, and it should be
+// rematerializable. Clearing the side effect bit causes miscompilations,
+// probably because the instruction can be moved around.
+def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
+ IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
+ T1Encoding<{1,0,1,0,1,?}>, Sched<[WriteALU]> {
// A6.2 & A8.6.8
bits<3> dst;
- bits<8> rhs;
+ bits<8> imm;
let Inst{10-8} = dst;
- let Inst{7-0} = rhs;
+ let Inst{7-0} = imm;
let DecoderMethod = "DecodeThumbAddSpecialReg";
}
+// Thumb1 frame lowering is rather fragile, we hope to be able to use
+// tADDrSPi, but we may need to insert a sequence that clobbers CPSR.
+def tADDframe : PseudoInst<(outs tGPR:$dst), (ins i32imm:$base, i32imm:$offset),
+ NoItinerary, []>,
+ Requires<[IsThumb, IsThumb1Only]> {
+ let Defs = [CPSR];
+}
+
// ADD sp, sp, #<imm7>
-def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
- "add\t$dst, $rhs", []>,
- T1Misc<{0,0,0,0,0,?,?}> {
+def tADDspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
+ IIC_iALUi, "add", "\t$Rdn, $imm", []>,
+ T1Misc<{0,0,0,0,0,?,?}>, Sched<[WriteALU]> {
// A6.2.5 & A8.6.8
- bits<7> rhs;
- let Inst{6-0} = rhs;
+ bits<7> imm;
+ let Inst{6-0} = imm;
let DecoderMethod = "DecodeThumbAddSPImm";
}
// SUB sp, sp, #<imm7>
// FIXME: The encoding and the ASM string don't match up.
-def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
- "sub\t$dst, $rhs", []>,
- T1Misc<{0,0,0,0,1,?,?}> {
+def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
+ IIC_iALUi, "sub", "\t$Rdn, $imm", []>,
+ T1Misc<{0,0,0,0,1,?,?}>, Sched<[WriteALU]> {
// A6.2.5 & A8.6.214
- bits<7> rhs;
- let Inst{6-0} = rhs;
+ bits<7> imm;
+ let Inst{6-0} = imm;
let DecoderMethod = "DecodeThumbAddSPImm";
}
+def : tInstAlias<"add${p} sp, $imm",
+ (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
+def : tInstAlias<"add${p} sp, sp, $imm",
+ (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
+
+// Can optionally specify SP as a three operand instruction.
+def : tInstAlias<"add${p} sp, sp, $imm",
+ (tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
+def : tInstAlias<"sub${p} sp, sp, $imm",
+ (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
+
// ADD <Rm>, sp
-def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
- "add\t$dst, $rhs", []>,
- T1Special<{0,0,?,?}> {
+def tADDrSP : T1pI<(outs GPR:$Rdn), (ins GPRsp:$sp, GPR:$Rn), IIC_iALUr,
+ "add", "\t$Rdn, $sp, $Rn", []>,
+ T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
// A8.6.9 Encoding T1
- bits<4> dst;
- let Inst{7} = dst{3};
+ bits<4> Rdn;
+ let Inst{7} = Rdn{3};
let Inst{6-3} = 0b1101;
- let Inst{2-0} = dst{2-0};
+ let Inst{2-0} = Rdn{2-0};
let DecoderMethod = "DecodeThumbAddSPReg";
}
// ADD sp, <Rm>
-def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
- "add\t$dst, $rhs", []>,
- T1Special<{0,0,?,?}> {
+def tADDspr : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, GPR:$Rm), IIC_iALUr,
+ "add", "\t$Rdn, $Rm", []>,
+ T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
// A8.6.9 Encoding T2
- bits<4> dst;
+ bits<4> Rm;
let Inst{7} = 1;
- let Inst{6-3} = dst;
+ let Inst{6-3} = Rm;
let Inst{2-0} = 0b101;
let DecoderMethod = "DecodeThumbAddSPReg";
}
// Indirect branches
let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
- T1Special<{1,1,0,?}> {
+ T1Special<{1,1,0,?}>, Sched<[WriteBr]> {
// A6.2.3 & A8.6.25
bits<4> Rm;
let Inst{6-3} = Rm;
let Inst{2-0} = 0b000;
+ let Unpredictable{2-0} = 0b111;
}
}
let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
- [(ARMretflag)], (tBX LR, pred:$p)>;
+ [(ARMretflag)], (tBX LR, pred:$p)>, Sched<[WriteBr]>;
// Alternative return instruction used by vararg functions.
def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
2, IIC_Br, [],
- (tBX GPR:$Rm, pred:$p)>;
+ (tBX GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
}
// All calls clobber the non-callee saved registers. SP is marked as a use to
// prevent stack-pointer assignments that appear immediately before calls from
// potentially appearing dead.
let isCall = 1,
- // On non-Darwin platforms R9 is callee-saved.
- Defs = [R0, R1, R2, R3, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
- Uses = [SP] in {
+ Defs = [LR], Uses = [SP] in {
// Also used for Thumb2
def tBL : TIx2<0b11110, 0b11, 1,
- (outs), (ins pred:$p, t_bltarget:$func, variable_ops), IIC_Br,
+ (outs), (ins pred:$p, t_bltarget:$func), IIC_Br,
"bl${p}\t$func",
[(ARMtcall tglobaladdr:$func)]>,
- Requires<[IsThumb, IsNotDarwin]> {
- bits<22> func;
- let Inst{26} = func{21};
+ Requires<[IsThumb]>, Sched<[WriteBrL]> {
+ bits<24> func;
+ let Inst{26} = func{23};
let Inst{25-16} = func{20-11};
- let Inst{13} = 1;
- let Inst{11} = 1;
+ let Inst{13} = func{22};
+ let Inst{11} = func{21};
let Inst{10-0} = func{10-0};
}
// ARMv5T and above, also used for Thumb2
def tBLXi : TIx2<0b11110, 0b11, 0,
- (outs), (ins pred:$p, t_blxtarget:$func, variable_ops), IIC_Br,
+ (outs), (ins pred:$p, t_blxtarget:$func), IIC_Br,
"blx${p}\t$func",
[(ARMcall tglobaladdr:$func)]>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]> {
- bits<21> func;
+ Requires<[IsThumb, HasV5T, IsNotMClass]>, Sched<[WriteBrL]> {
+ bits<24> func;
+ let Inst{26} = func{23};
let Inst{25-16} = func{20-11};
- let Inst{13} = 1;
- let Inst{11} = 1;
+ let Inst{13} = func{22};
+ let Inst{11} = func{21};
let Inst{10-1} = func{10-1};
let Inst{0} = 0; // func{0} is assumed zero
}
// Also used for Thumb2
- def tBLXr : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
+ def tBLXr : TI<(outs), (ins pred:$p, GPR:$func), IIC_Br,
"blx${p}\t$func",
[(ARMtcall GPR:$func)]>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>,
- T1Special<{1,1,1,?}> { // A6.2.3 & A8.6.24;
+ Requires<[IsThumb, HasV5T]>,
+ T1Special<{1,1,1,?}>, Sched<[WriteBrL]> { // A6.2.3 & A8.6.24;
bits<4> func;
let Inst{6-3} = func;
let Inst{2-0} = 0b000;
}
// ARMv4T
- def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
+ def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func),
4, IIC_Br,
[(ARMcall_nolink tGPR:$func)]>,
- Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
-}
-
-let isCall = 1,
- // On Darwin R9 is call-clobbered.
- // R7 is marked as a use to prevent frame-pointer assignments from being
- // moved above / below calls.
- Defs = [R0, R1, R2, R3, R9, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
- Uses = [R7, SP] in {
- // Also used for Thumb2
- def tBLr9 : tPseudoExpand<(outs), (ins pred:$p, t_bltarget:$func, variable_ops),
- 4, IIC_Br, [(ARMtcall tglobaladdr:$func)],
- (tBL pred:$p, t_bltarget:$func)>,
- Requires<[IsThumb, IsDarwin]>;
-
- // ARMv5T and above, also used for Thumb2
- def tBLXi_r9 : tPseudoExpand<(outs), (ins pred:$p, t_blxtarget:$func, variable_ops),
- 4, IIC_Br, [(ARMcall tglobaladdr:$func)],
- (tBLXi pred:$p, t_blxtarget:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
-
- // Also used for Thumb2
- def tBLXr_r9 : tPseudoExpand<(outs), (ins pred:$p, GPR:$func, variable_ops),
- 2, IIC_Br, [(ARMtcall GPR:$func)],
- (tBLXr pred:$p, GPR:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
-
- // ARMv4T
- def tBXr9_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
- 4, IIC_Br,
- [(ARMcall_nolink tGPR:$func)]>,
- Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
+ Requires<[IsThumb, IsThumb1Only]>, Sched<[WriteBr]>;
}
let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
let isPredicable = 1 in
- def tB : T1I<(outs), (ins t_brtarget:$target), IIC_Br,
- "b\t$target", [(br bb:$target)]>,
- T1Encoding<{1,1,1,0,0,?}> {
+ def tB : T1pI<(outs), (ins t_brtarget:$target), IIC_Br,
+ "b", "\t$target", [(br bb:$target)]>,
+ T1Encoding<{1,1,1,0,0,?}>, Sched<[WriteBr]> {
bits<11> target;
let Inst{10-0} = target;
- }
+ let AsmMatchConverter = "cvtThumbBranches";
+ }
// Far jump
// Just a pseudo for a tBL instruction. Needed to let regalloc know about
// the clobber of LR.
let Defs = [LR] in
def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
- 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>;
+ 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>,
+ Sched<[WriteBrTbl]>;
def tBR_JTr : tPseudoInst<(outs),
(ins tGPR:$target, i32imm:$jt, i32imm:$id),
0, IIC_Br,
- [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
+ [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
+ Sched<[WriteBrTbl]> {
list<Predicate> Predicates = [IsThumb, IsThumb1Only];
}
}
def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
"b${p}\t$target",
[/*(ARMbrcond bb:$target, imm:$cc)*/]>,
- T1BranchCond<{1,1,0,1}> {
+ T1BranchCond<{1,1,0,1}>, Sched<[WriteBr]> {
bits<4> p;
bits<8> target;
let Inst{11-8} = p;
let Inst{7-0} = target;
+ let AsmMatchConverter = "cvtThumbBranches";
}
-// Compare and branch on zero / non-zero
-let isBranch = 1, isTerminator = 1 in {
- def tCBZ : T1I<(outs), (ins tGPR:$Rn, t_cbtarget:$target), IIC_Br,
- "cbz\t$Rn, $target", []>,
- T1Misc<{0,0,?,1,?,?,?}> {
- // A8.6.27
- bits<6> target;
- bits<3> Rn;
- let Inst{9} = target{5};
- let Inst{7-3} = target{4-0};
- let Inst{2-0} = Rn;
- }
-
- def tCBNZ : T1I<(outs), (ins tGPR:$Rn, t_cbtarget:$target), IIC_Br,
- "cbnz\t$Rn, $target", []>,
- T1Misc<{1,0,?,1,?,?,?}> {
- // A8.6.27
- bits<6> target;
- bits<3> Rn;
- let Inst{9} = target{5};
- let Inst{7-3} = target{4-0};
- let Inst{2-0} = Rn;
- }
-}
// Tail calls
let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
- // Darwin versions.
- let Defs = [R0, R1, R2, R3, R9, R12, QQQQ0, QQQQ2, QQQQ3, PC],
- Uses = [SP] in {
- // tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls
- // on Darwin), so it's in ARMInstrThumb2.td.
- def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
+ // IOS versions.
+ let Uses = [SP] in {
+ def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst),
4, IIC_Br, [],
(tBX GPR:$dst, (ops 14, zero_reg))>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb]>, Sched<[WriteBr]>;
}
- // Non-Darwin versions (the difference is R9).
- let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC],
- Uses = [SP] in {
- def tTAILJMPdND : tPseudoExpand<(outs), (ins t_brtarget:$dst, variable_ops),
+ // tTAILJMPd: MachO version uses a Thumb2 branch (no Thumb1 tail calls
+ // on MachO), so it's in ARMInstrThumb2.td.
+ // Non-MachO version:
+ let Uses = [SP] in {
+ def tTAILJMPdND : tPseudoExpand<(outs),
+ (ins t_brtarget:$dst, pred:$p),
4, IIC_Br, [],
- (tB t_brtarget:$dst)>,
- Requires<[IsThumb, IsNotDarwin]>;
- def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
- 4, IIC_Br, [],
- (tBX GPR:$dst, (ops 14, zero_reg))>,
- Requires<[IsThumb, IsNotDarwin]>;
+ (tB t_brtarget:$dst, pred:$p)>,
+ Requires<[IsThumb, IsNotMachO]>, Sched<[WriteBr]>;
}
}
-// A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
+// A8.6.218 Supervisor Call (Software Interrupt)
// A8.6.16 B: Encoding T1
// If Inst{11-8} == 0b1111 then SEE SVC
let isCall = 1, Uses = [SP] in
def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
- "svc", "\t$imm", []>, Encoding16 {
+ "svc", "\t$imm", []>, Encoding16, Sched<[WriteBr]> {
bits<8> imm;
let Inst{15-12} = 0b1101;
let Inst{11-8} = 0b1111;
// The assembler uses 0xDEFE for a trap instruction.
let isBarrier = 1, isTerminator = 1 in
def tTRAP : TI<(outs), (ins), IIC_Br,
- "trap", [(trap)]>, Encoding16 {
+ "trap", [(trap)]>, Encoding16, Sched<[WriteBr]> {
let Inst = 0xdefe;
}
let AddedComplexity = 10 in
def tLDRSB : // A8.6.80
- T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
+ T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
AddrModeT1_1, IIC_iLoad_bh_r,
- "ldrsb", "\t$dst, $addr",
- [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
+ "ldrsb", "\t$Rt, $addr",
+ [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>;
let AddedComplexity = 10 in
def tLDRSH : // A8.6.84
- T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
+ T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
AddrModeT1_2, IIC_iLoad_bh_r,
- "ldrsh", "\t$dst, $addr",
- [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
+ "ldrsh", "\t$Rt, $addr",
+ [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>;
let canFoldAsLoad = 1 in
def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
let Inst{7-0} = addr;
}
-// Load tconstpool
-// FIXME: Use ldr.n to work around a Darwin assembler bug.
-let canFoldAsLoad = 1, isReMaterializable = 1, isCodeGenOnly = 1 in
+let canFoldAsLoad = 1, isReMaterializable = 1 in
def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
- "ldr", ".n\t$Rt, $addr",
+ "ldr", "\t$Rt, $addr",
[(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
T1Encoding<{0,1,0,0,1,?}> {
// A6.2 & A8.6.59
let Inst{7-0} = addr;
}
-// FIXME: Remove this entry when the above ldr.n workaround is fixed.
-// For disassembly use only.
-def tLDRpciDIS : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
- "ldr", "\t$Rt, $addr",
- [/* disassembly only */]>,
- T1Encoding<{0,1,0,0,1,?}> {
- // A6.2 & A8.6.59
- bits<3> Rt;
- bits<8> addr;
- let Inst{10-8} = Rt;
- let Inst{7-0} = addr;
-}
-
// A8.6.194 & A8.6.192
defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
t_addrmode_is4, AddrModeT1_4,
// Load / store multiple Instructions.
//
-multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
- InstrItinClass itin_upd, bits<6> T1Enc,
- bit L_bit, string baseOpc> {
- def IA :
- T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
- itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
- T1Encoding<T1Enc> {
- bits<3> Rn;
- bits<8> regs;
- let Inst{10-8} = Rn;
- let Inst{7-0} = regs;
- }
-
- def IA_UPD :
- InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
- "$Rn = $wb", itin_upd>,
- PseudoInstExpansion<(!cast<Instruction>(!strconcat(baseOpc, "IA"))
- GPR:$Rn, pred:$p, reglist:$regs)> {
- let Size = 2;
- let OutOperandList = (outs GPR:$wb);
- let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
- let Pattern = [];
- let isCodeGenOnly = 1;
- let isPseudo = 1;
- list<Predicate> Predicates = [IsThumb];
- }
-}
-
// These require base address to be written back or one of the loaded regs.
-let neverHasSideEffects = 1 in {
+let hasSideEffects = 0 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
-defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
- {1,1,0,0,1,?}, 1, "tLDM">;
-
+def tLDMIA : T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
+ IIC_iLoad_m, "ldm${p}\t$Rn, $regs", []>, T1Encoding<{1,1,0,0,1,?}> {
+ bits<3> Rn;
+ bits<8> regs;
+ let Inst{10-8} = Rn;
+ let Inst{7-0} = regs;
+}
+
+// Writeback version is just a pseudo, as there's no encoding difference.
+// Writeback happens iff the base register is not in the destination register
+// list.
+def tLDMIA_UPD :
+ InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
+ "$Rn = $wb", IIC_iLoad_mu>,
+ PseudoInstExpansion<(tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)> {
+ let Size = 2;
+ let OutOperandList = (outs GPR:$wb);
+ let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
+ let Pattern = [];
+ let isCodeGenOnly = 1;
+ let isPseudo = 1;
+ list<Predicate> Predicates = [IsThumb];
+}
+
+// There is no non-writeback version of STM for Thumb.
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
-defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
- {1,1,0,0,0,?}, 0, "tSTM">;
+def tSTMIA_UPD : Thumb1I<(outs GPR:$wb),
+ (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
+ AddrModeNone, 2, IIC_iStore_mu,
+ "stm${p}\t$Rn!, $regs", "$Rn = $wb", []>,
+ T1Encoding<{1,1,0,0,0,?}> {
+ bits<3> Rn;
+ bits<8> regs;
+ let Inst{10-8} = Rn;
+ let Inst{7-0} = regs;
+}
+
+} // hasSideEffects
-} // neverHasSideEffects
+def : InstAlias<"ldm${p} $Rn!, $regs",
+ (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)>,
+ Requires<[IsThumb, IsThumb1Only]>;
let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
def tADC : // A8.6.2
T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
"adc", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// Add immediate
def tADDi3 : // A8.6.4 T1
- T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
+ T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
IIC_iALUi,
"add", "\t$Rd, $Rm, $imm3",
- [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
+ [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]>,
+ Sched<[WriteALU]> {
bits<3> imm3;
let Inst{8-6} = imm3;
}
def tADDi8 : // A8.6.4 T2
- T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
- IIC_iALUi,
+ T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
+ (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
"add", "\t$Rdn, $imm8",
- [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
+ [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>,
+ Sched<[WriteALU]>;
// Add register
let isCommutable = 1 in
T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iALUr,
"add", "\t$Rd, $Rn, $Rm",
- [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
-let neverHasSideEffects = 1 in
+let hasSideEffects = 0 in
def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
"add", "\t$Rdn, $Rm", []>,
- T1Special<{0,0,?,?}> {
+ T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
// A8.6.6 T2
bits<4> Rdn;
bits<4> Rm;
T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iBITr,
"and", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// ASR immediate
def tASRri : // A8.6.14
T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
IIC_iMOVsi,
"asr", "\t$Rd, $Rm, $imm5",
- [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
+ [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
+ Sched<[WriteALU]> {
bits<5> imm5;
let Inst{10-6} = imm5;
}
T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iMOVsr,
"asr", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// BIC register
def tBIC : // A8.6.20
T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iBITr,
"bic", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
+ [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>,
+ Sched<[WriteALU]>;
// CMN register
let isCompare = 1, Defs = [CPSR] in {
T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iCMPr,
"cmn", "\t$Rn, $Rm",
- [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
+ [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>, Sched<[WriteCMP]>;
} // isCompare = 1, Defs = [CPSR]
// CMP immediate
let isCompare = 1, Defs = [CPSR] in {
-def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
+def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
"cmp", "\t$Rn, $imm8",
[(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
- T1General<{1,0,1,?,?}> {
+ T1General<{1,0,1,?,?}>, Sched<[WriteCMP]> {
// A8.6.35
bits<3> Rn;
bits<8> imm8;
T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iCMPr,
"cmp", "\t$Rn, $Rm",
- [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
+ [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>, Sched<[WriteCMP]>;
def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
"cmp", "\t$Rn, $Rm", []>,
- T1Special<{0,1,?,?}> {
+ T1Special<{0,1,?,?}>, Sched<[WriteCMP]> {
// A8.6.36 T2
bits<4> Rm;
bits<4> Rn;
T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iBITr,
"eor", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// LSL immediate
def tLSLri : // A8.6.88
- T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
+ T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_31:$imm5),
IIC_iMOVsi,
"lsl", "\t$Rd, $Rm, $imm5",
- [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
+ [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]>,
+ Sched<[WriteALU]> {
bits<5> imm5;
let Inst{10-6} = imm5;
}
T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iMOVsr,
"lsl", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// LSR immediate
def tLSRri : // A8.6.90
T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
IIC_iMOVsi,
"lsr", "\t$Rd, $Rm, $imm5",
- [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
+ [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
+ Sched<[WriteALU]> {
bits<5> imm5;
let Inst{10-6} = imm5;
}
T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iMOVsr,
"lsr", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// Move register
let isMoveImm = 1 in
def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
"mov", "\t$Rd, $imm8",
[(set tGPR:$Rd, imm0_255:$imm8)]>,
- T1General<{1,0,0,?,?}> {
+ T1General<{1,0,0,?,?}>, Sched<[WriteALU]> {
// A8.6.96
bits<3> Rd;
bits<8> imm8;
let Inst{10-8} = Rd;
let Inst{7-0} = imm8;
}
+// Because we have an explicit tMOVSr below, we need an alias to handle
+// the immediate "movs" form here. Blech.
+def : tInstAlias <"movs $Rdn, $imm",
+ (tMOVi8 tGPR:$Rdn, CPSR, imm0_255:$imm, 14, 0)>;
// A7-73: MOV(2) - mov setting flag.
-let neverHasSideEffects = 1 in {
+let hasSideEffects = 0 in {
def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
2, IIC_iMOVr,
"mov", "\t$Rd, $Rm", "", []>,
- T1Special<{1,0,?,?}> {
+ T1Special<{1,0,?,?}>, Sched<[WriteALU]> {
// A8.6.97
bits<4> Rd;
bits<4> Rm;
}
let Defs = [CPSR] in
def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
- "movs\t$Rd, $Rm", []>, Encoding16 {
+ "movs\t$Rd, $Rm", []>, Encoding16, Sched<[WriteALU]> {
// A8.6.97
bits<3> Rd;
bits<3> Rm;
let Inst{5-3} = Rm;
let Inst{2-0} = Rd;
}
-} // neverHasSideEffects
+} // hasSideEffects
// Multiply register
let isCommutable = 1 in
def tMUL : // A8.6.105 T1
- T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
- IIC_iMUL32,
- "mul", "\t$Rdn, $Rm, $Rdn",
- [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
+ Thumb1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), AddrModeNone, 2,
+ IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm", "$Rm = $Rd",
+ [(set tGPR:$Rd, (mul tGPR:$Rn, tGPR:$Rm))]>,
+ T1DataProcessing<0b1101> {
+ bits<3> Rd;
+ bits<3> Rn;
+ let Inst{5-3} = Rn;
+ let Inst{2-0} = Rd;
+ let AsmMatchConverter = "cvtThumbMultiply";
+}
+
+def :tInstAlias<"mul${s}${p} $Rdm, $Rn", (tMUL tGPR:$Rdm, s_cc_out:$s, tGPR:$Rn,
+ pred:$p)>;
// Move inverse register
def tMVN : // A8.6.107
T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
"mvn", "\t$Rd, $Rn",
- [(set tGPR:$Rd, (not tGPR:$Rn))]>;
+ [(set tGPR:$Rd, (not tGPR:$Rn))]>, Sched<[WriteALU]>;
// Bitwise or register
let isCommutable = 1 in
T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iBITr,
"orr", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
// Swaps
def tREV : // A8.6.134
IIC_iUNAr,
"rev", "\t$Rd, $Rm",
[(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
def tREV16 : // A8.6.135
T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
IIC_iUNAr,
"rev16", "\t$Rd, $Rm",
[(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
def tREVSH : // A8.6.136
T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
IIC_iUNAr,
"revsh", "\t$Rd, $Rm",
[(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
// Rotate right register
def tROR : // A8.6.139
T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iMOVsr,
"ror", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>,
+ Sched<[WriteALU]>;
// Negate register
def tRSB : // A8.6.141
T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
IIC_iALUi,
"rsb", "\t$Rd, $Rn, #0",
- [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
+ [(set tGPR:$Rd, (ineg tGPR:$Rn))]>, Sched<[WriteALU]>;
// Subtract with carry register
let Uses = [CPSR] in
T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iALUr,
"sbc", "\t$Rdn, $Rm",
- [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
+ [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>,
+ Sched<[WriteALU]>;
// Subtract immediate
def tSUBi3 : // A8.6.210 T1
- T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
+ T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
IIC_iALUi,
"sub", "\t$Rd, $Rm, $imm3",
- [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
+ [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]>,
+ Sched<[WriteALU]> {
bits<3> imm3;
let Inst{8-6} = imm3;
}
def tSUBi8 : // A8.6.210 T2
- T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
- IIC_iALUi,
+ T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn),
+ (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
"sub", "\t$Rdn, $imm8",
- [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
+ [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>,
+ Sched<[WriteALU]>;
// Subtract register
def tSUBrr : // A8.6.212
T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
IIC_iALUr,
"sub", "\t$Rd, $Rn, $Rm",
- [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
-
-// TODO: A7-96: STMIA - store multiple.
+ [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>,
+ Sched<[WriteALU]>;
// Sign-extend byte
def tSXTB : // A8.6.222
IIC_iUNAr,
"sxtb", "\t$Rd, $Rm",
[(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>,
+ Sched<[WriteALU]>;
// Sign-extend short
def tSXTH : // A8.6.224
IIC_iUNAr,
"sxth", "\t$Rd, $Rm",
[(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>,
+ Sched<[WriteALU]>;
// Test
let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
def tTST : // A8.6.230
T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
"tst", "\t$Rn, $Rm",
- [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
+ [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>,
+ Sched<[WriteALU]>;
+
+// A8.8.247 UDF - Undefined (Encoding T1)
+def tUDF : TI<(outs), (ins imm0_255:$imm8), IIC_Br, "udf\t$imm8",
+ [(int_arm_undefined imm0_255:$imm8)]>, Encoding16 {
+ bits<8> imm8;
+ let Inst{15-12} = 0b1101;
+ let Inst{11-8} = 0b1110;
+ let Inst{7-0} = imm8;
+}
// Zero-extend byte
def tUXTB : // A8.6.262
IIC_iUNAr,
"uxtb", "\t$Rd, $Rm",
[(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>,
+ Sched<[WriteALU]>;
// Zero-extend short
def tUXTH : // A8.6.264
IIC_iUNAr,
"uxth", "\t$Rd, $Rm",
[(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
- Requires<[IsThumb, IsThumb1Only, HasV6]>;
+ Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
// Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
// Expanded after instruction selection into a branch sequence.
let usesCustomInserter = 1 in // Expanded after instruction selection.
def tMOVCCr_pseudo :
- PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
- NoItinerary,
- [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
+ PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, cmovpred:$p),
+ NoItinerary,
+ [(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, cmovpred:$p))]>;
// tLEApcrel - Load a pc-relative address into a register without offending the
// assembler.
def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
- IIC_iALUi, "adr{$p}\t$Rd, #$addr", []>,
- T1Encoding<{1,0,1,0,0,?}> {
+ IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
+ T1Encoding<{1,0,1,0,0,?}>, Sched<[WriteALU]> {
bits<3> Rd;
bits<8> addr;
let Inst{10-8} = Rd;
let DecoderMethod = "DecodeThumbAddSpecialReg";
}
-let neverHasSideEffects = 1, isReMaterializable = 1 in
+let hasSideEffects = 0, isReMaterializable = 1 in
def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
- 2, IIC_iALUi, []>;
+ 2, IIC_iALUi, []>, Sched<[WriteALU]>;
+let hasSideEffects = 1 in
def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
(ins i32imm:$label, nohash_imm:$id, pred:$p),
- 2, IIC_iALUi, []>;
+ 2, IIC_iALUi, []>, Sched<[WriteALU]>;
//===----------------------------------------------------------------------===//
// TLS Instructions
// complete with fixup for the aeabi_read_tp function.
let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
- [(set R0, ARMthread_pointer)]>;
+ [(set R0, ARMthread_pointer)]>,
+ Sched<[WriteBr]>;
//===----------------------------------------------------------------------===//
// SJLJ Exception handling intrinsics
// preserve all of the callee-saved resgisters, which is exactly what we want.
// $val is a scratch register for our use.
let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
- hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
+ hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
+ usesCustomInserter = 1 in
def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
AddrModeNone, 0, NoItinerary, "","",
[(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
-// FIXME: Non-Darwin version(s)
+// FIXME: Non-IOS version(s)
let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
Defs = [ R7, LR, SP ] in
def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
AddrModeNone, 0, IndexModeNone,
Pseudo, NoItinerary, "", "",
[(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb, IsIOS]>;
//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
(tSUBrr tGPR:$lhs, tGPR:$rhs)>;
-// ConstantPool, GlobalAddress
-def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
+// Bswap 16 with load/store
+def : T1Pat<(srl (bswap (extloadi16 t_addrmode_rrs2:$addr)), (i32 16)),
+ (tREV16 (tLDRHr t_addrmode_rrs2:$addr))>;
+def : T1Pat<(srl (bswap (extloadi16 t_addrmode_is2:$addr)), (i32 16)),
+ (tREV16 (tLDRHi t_addrmode_is2:$addr))>;
+def : T1Pat<(truncstorei16 (srl (bswap tGPR:$Rn), (i32 16)),
+ t_addrmode_rrs2:$addr),
+ (tSTRHr (tREV16 tGPR:$Rn), t_addrmode_rrs2:$addr)>;
+def : T1Pat<(truncstorei16 (srl (bswap tGPR:$Rn), (i32 16)),
+ t_addrmode_is2:$addr),
+ (tSTRHi(tREV16 tGPR:$Rn), t_addrmode_is2:$addr)>;
+
+// ConstantPool
def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
+// GlobalAddress
+def tLDRLIT_ga_pcrel : PseudoInst<(outs tGPR:$dst), (ins i32imm:$addr),
+ IIC_iLoadiALU,
+ [(set tGPR:$dst,
+ (ARMWrapperPIC tglobaladdr:$addr))]>,
+ Requires<[IsThumb, DontUseMovt]>;
+
+def tLDRLIT_ga_abs : PseudoInst<(outs tGPR:$dst), (ins i32imm:$src),
+ IIC_iLoad_i,
+ [(set tGPR:$dst,
+ (ARMWrapper tglobaladdr:$src))]>,
+ Requires<[IsThumb, DontUseMovt]>;
+
+
// JumpTable
def : T1Pat<(ARMWrapperJT tjumptable:$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:$func)>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb]>;
def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>;
-def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
+ Requires<[IsThumb, HasV5T, IsNotMClass]>;
// Indirect calls to ARM routines
def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>;
-def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
+ Requires<[IsThumb, HasV5T]>;
// zextload i1 -> zextload i8
def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
(tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
+def : T1Pat<(atomic_load_8 t_addrmode_is1:$src),
+ (tLDRBi t_addrmode_is1:$src)>;
+def : T1Pat<(atomic_load_8 t_addrmode_rrs1:$src),
+ (tLDRBr t_addrmode_rrs1:$src)>;
+def : T1Pat<(atomic_load_16 t_addrmode_is2:$src),
+ (tLDRHi t_addrmode_is2:$src)>;
+def : T1Pat<(atomic_load_16 t_addrmode_rrs2:$src),
+ (tLDRHr t_addrmode_rrs2:$src)>;
+def : T1Pat<(atomic_load_32 t_addrmode_is4:$src),
+ (tLDRi t_addrmode_is4:$src)>;
+def : T1Pat<(atomic_load_32 t_addrmode_rrs4:$src),
+ (tLDRr t_addrmode_rrs4:$src)>;
+def : T1Pat<(atomic_store_8 t_addrmode_is1:$ptr, tGPR:$val),
+ (tSTRBi tGPR:$val, t_addrmode_is1:$ptr)>;
+def : T1Pat<(atomic_store_8 t_addrmode_rrs1:$ptr, tGPR:$val),
+ (tSTRBr tGPR:$val, t_addrmode_rrs1:$ptr)>;
+def : T1Pat<(atomic_store_16 t_addrmode_is2:$ptr, tGPR:$val),
+ (tSTRHi tGPR:$val, t_addrmode_is2:$ptr)>;
+def : T1Pat<(atomic_store_16 t_addrmode_rrs2:$ptr, tGPR:$val),
+ (tSTRHr tGPR:$val, t_addrmode_rrs2:$ptr)>;
+def : T1Pat<(atomic_store_32 t_addrmode_is4:$ptr, tGPR:$val),
+ (tSTRi tGPR:$val, t_addrmode_is4:$ptr)>;
+def : T1Pat<(atomic_store_32 t_addrmode_rrs4:$ptr, tGPR:$val),
+ (tSTRr tGPR:$val, t_addrmode_rrs4:$ptr)>;
+
// Large immediate handling.
// Two piece imms.
hasExtraDefRegAllocReq = 1 in
def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
2, IIC_iPop_Br, [],
- (tPOP pred:$p, reglist:$regs)>;
+ (tPOP pred:$p, reglist:$regs)>, Sched<[WriteBrL]>;
// Indirect branch using "mov pc, $Rm"
let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
2, IIC_Br, [(brind GPR:$Rm)],
- (tMOVr PC, GPR:$Rm, pred:$p)>;
+ (tMOVr PC, GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
}
+
+
+// In Thumb1, "nop" is encoded as a "mov r8, r8". Technically, the bf00
+// encoding is available on ARMv6K, but we don't differentiate that finely.
+def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>;
+
+
+// For round-trip assembly/disassembly, we have to handle a CPS instruction
+// without any iflags. That's not, strictly speaking, valid syntax, but it's
+// a useful extension and assembles to defined behaviour (the insn does
+// nothing).
+def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
+def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
+
+// "neg" is and alias for "rsb rd, rn, #0"
+def : tInstAlias<"neg${s}${p} $Rd, $Rm",
+ (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
+
+
+// Implied destination operand forms for shifts.
+def : tInstAlias<"lsl${s}${p} $Rdm, $imm",
+ (tLSLri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm0_31:$imm, pred:$p)>;
+def : tInstAlias<"lsr${s}${p} $Rdm, $imm",
+ (tLSRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
+def : tInstAlias<"asr${s}${p} $Rdm, $imm",
+ (tASRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
projects / oota-llvm.git / blobdiff