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Remove the form field from Mips16 instruction formats and set things

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up so that we can apply the direct object emitter patch. This patch
should be a nop right now and it's test is to not break what is already
there.
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175126 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reed Kotler 2013-02-14 03:05:25 +00:00
parent fd1335e982
commit 38f85c5b9f
3 changed files with 73 additions and 87 deletions
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14
lib/Target/Mips/Disassembler/MipsDisassembler.cpp
View File

@ -93,6 +93,11 @@ static DecodeStatus DecodeCPU64RegsRegisterClass(MCInst &Inst,
uint64_t Address,
const void *Decoder);
static DecodeStatus DecodeCPU16RegsRegisterClass(MCInst &Inst,
unsigned RegNo,
uint64_t Address,
const void *Decoder);
static DecodeStatus DecodeCPURegsRegisterClass(MCInst &Inst,
unsigned RegNo,
uint64_t Address,
@ -322,6 +327,15 @@ static unsigned getReg(const void *D, unsigned RC, unsigned RegNo) {
return *(Dis->getRegInfo()->getRegClass(RC).begin() + RegNo);
}
static DecodeStatus DecodeCPU16RegsRegisterClass(MCInst &Inst,
unsigned RegNo,
uint64_t Address,
const void *Decoder) {
return MCDisassembler::Fail;
}
static DecodeStatus DecodeCPU64RegsRegisterClass(MCInst &Inst,
unsigned RegNo,
uint64_t Address,

111
lib/Target/Mips/Mips16InstrFormats.td
View File

@ -29,45 +29,13 @@
//
//===----------------------------------------------------------------------===//
// Format specifies the encoding used by the instruction. This is part of the
// ad-hoc solution used to emit machine instruction encodings by our machine
// code emitter.
//
class Format16<bits<5> val> {
bits<5> Value = val;
}
def Pseudo16 : Format16<0>;
def FrmI16 : Format16<1>;
def FrmRI16 : Format16<2>;
def FrmRR16 : Format16<3>;
def FrmRRI16 : Format16<4>;
def FrmRRR16 : Format16<5>;
def FrmRRI_A16 : Format16<6>;
def FrmSHIFT16 : Format16<7>;
def FrmI8_TYPE16 : Format16<8>;
def FrmI8_MOVR3216 : Format16<9>;
def FrmI8_MOV32R16 : Format16<10>;
def FrmI8_SVRS16 : Format16<11>;
def FrmJAL16 : Format16<12>;
def FrmJALX16 : Format16<13>;
def FrmEXT_I16 : Format16<14>;
def FrmASMACRO16 : Format16<15>;
def FrmEXT_RI16 : Format16<16>;
def FrmEXT_RRI16 : Format16<17>;
def FrmEXT_RRI_A16 : Format16<18>;
def FrmEXT_SHIFT16 : Format16<19>;
def FrmEXT_I816 : Format16<20>;
def FrmEXT_I8_SVRS16 : Format16<21>;
def FrmOther16 : Format16<22>; // Instruction w/ a custom format
// Base class for Mips 16 Format
// This class does not depend on the instruction size
//
class MipsInst16_Base<dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin, Format16 f>: Instruction
InstrItinClass itin>: Instruction
{
Format16 Form = f;
let Namespace = "Mips";
@ -78,14 +46,6 @@ class MipsInst16_Base<dag outs, dag ins, string asmstr, list<dag> pattern,
let Pattern = pattern;
let Itinerary = itin;
//
// Attributes specific to Mips instructions...
//
bits<5> FormBits = Form.Value;
// TSFlags layout should be kept in sync with MipsInstrInfo.h.
let TSFlags{4-0} = FormBits;
let Predicates = [InMips16Mode];
}
@ -93,30 +53,35 @@ class MipsInst16_Base<dag outs, dag ins, string asmstr, list<dag> pattern,
// Generic Mips 16 Format
//
class MipsInst16<dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin, Format16 f>:
MipsInst16_Base<outs, ins, asmstr, pattern, itin, f>
InstrItinClass itin>:
MipsInst16_Base<outs, ins, asmstr, pattern, itin>
{
field bits<16> Inst;
bits<5> Opcode = 0;
// Top 5 bits are the 'opcode' field
let Inst{15-11} = Opcode;
let Size=2;
field bits<16> SoftFail = 0;
}
//
// For 32 bit extended instruction forms.
//
class MipsInst16_32<dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin, Format16 f>:
MipsInst16_Base<outs, ins, asmstr, pattern, itin, f>
InstrItinClass itin>:
MipsInst16_Base<outs, ins, asmstr, pattern, itin>
{
field bits<32> Inst;
let Size=4;
field bits<32> SoftFail = 0;
}
class MipsInst16_EXTEND<dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin, Format16 f>:
MipsInst16_32<outs, ins, asmstr, pattern, itin, f>
InstrItinClass itin>:
MipsInst16_32<outs, ins, asmstr, pattern, itin>
{
let Inst{31-27} = 0b11110;
}
@ -125,7 +90,7 @@ class MipsInst16_EXTEND<dag outs, dag ins, string asmstr, list<dag> pattern,
// Mips Pseudo Instructions Format
class MipsPseudo16<dag outs, dag ins, string asmstr, list<dag> pattern>:
MipsInst16<outs, ins, asmstr, pattern, IIPseudo, Pseudo16> {
MipsInst16<outs, ins, asmstr, pattern, IIPseudo> {
let isCodeGenOnly = 1;
let isPseudo = 1;
}
@ -137,7 +102,7 @@ class MipsPseudo16<dag outs, dag ins, string asmstr, list<dag> pattern>:
class FI16<bits<5> op, dag outs, dag ins, string asmstr, list<dag> pattern,
InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmI16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<11> imm11;
@ -152,7 +117,7 @@ class FI16<bits<5> op, dag outs, dag ins, string asmstr, list<dag> pattern,
class FRI16<bits<5> op, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRI16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<8> imm8;
@ -169,7 +134,7 @@ class FRI16<bits<5> op, dag outs, dag ins, string asmstr,
class FRR16<bits<5> _funct, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRR16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> ry;
@ -188,7 +153,7 @@ class FRR16<bits<5> _funct, dag outs, dag ins, string asmstr,
//
class FRR_SF16<bits<5> _funct, bits<3> _subfunct, dag outs, dag ins,
string asmstr, list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRR16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> subfunct;
@ -208,7 +173,7 @@ class FRR_SF16<bits<5> _funct, bits<3> _subfunct, dag outs, dag ins,
//
class FC16<bits<5> _funct, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRR16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<6> _code; // code is a keyword in tablegen
bits<5> funct;
@ -226,7 +191,7 @@ class FC16<bits<5> _funct, dag outs, dag ins, string asmstr,
class FRR16_JALRC<bits<1> _nd, bits<1> _l, bits<1> r_a,
dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRR16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<1> nd;
@ -252,7 +217,7 @@ class FRR16_JALRC<bits<1> _nd, bits<1> _l, bits<1> r_a,
class FRRI16<bits<5> op, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRRI16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> ry;
@ -272,7 +237,7 @@ class FRRI16<bits<5> op, dag outs, dag ins, string asmstr,
class FRRR16<bits<2> _f, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRRR16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> ry;
@ -294,7 +259,7 @@ class FRRR16<bits<2> _f, dag outs, dag ins, string asmstr,
class FRRI_A16<bits<1> _f, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmRRI_A16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> ry;
@ -316,7 +281,7 @@ class FRRI_A16<bits<1> _f, dag outs, dag ins, string asmstr,
class FSHIFT16<bits<2> _f, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmSHIFT16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> rx;
bits<3> ry;
@ -338,7 +303,7 @@ class FSHIFT16<bits<2> _f, dag outs, dag ins, string asmstr,
class FI816<bits<3> _func, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmI8_TYPE16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> func;
bits<8> imm8;
@ -356,7 +321,7 @@ class FI816<bits<3> _func, dag outs, dag ins, string asmstr,
class FI8_MOVR3216<dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmI8_MOVR3216>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<4> ry;
@ -378,7 +343,7 @@ class FI8_MOVR3216<dag outs, dag ins, string asmstr,
class FI8_MOV32R16<dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmI8_MOV32R16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<3> func;
@ -402,7 +367,7 @@ class FI8_MOV32R16<dag outs, dag ins, string asmstr,
class FI8_SVRS16<bits<1> _s, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16<outs, ins, asmstr, pattern, itin, FrmI8_SVRS16>
MipsInst16<outs, ins, asmstr, pattern, itin>
{
bits<1> s;
bits<1> ra = 0;
@ -429,7 +394,7 @@ class FI8_SVRS16<bits<1> _s, dag outs, dag ins, string asmstr,
class FJAL16<bits<1> _X, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_32<outs, ins, asmstr, pattern, itin, FrmJAL16>
MipsInst16_32<outs, ins, asmstr, pattern, itin>
{
bits<1> X;
bits<26> imm26;
@ -452,7 +417,7 @@ class FJAL16<bits<1> _X, dag outs, dag ins, string asmstr,
class FEXT_I16<bits<5> _eop, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_I16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<16> imm16;
bits<5> eop;
@ -474,7 +439,7 @@ class FEXT_I16<bits<5> _eop, dag outs, dag ins, string asmstr,
class FASMACRO16<dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmASMACRO16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<3> select;
bits<3> p4;
@ -503,7 +468,7 @@ class FASMACRO16<dag outs, dag ins, string asmstr,
class FEXT_RI16<bits<5> _op, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_RI16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<16> imm16;
bits<5> op;
@ -527,7 +492,7 @@ class FEXT_RI16<bits<5> _op, dag outs, dag ins, string asmstr,
class FEXT_RRI16<bits<5> _op, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_RRI16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<5> op;
bits<16> imm16;
@ -552,7 +517,7 @@ class FEXT_RRI16<bits<5> _op, dag outs, dag ins, string asmstr,
class FEXT_RRI_A16<bits<1> _f, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_RRI_A16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<15> imm15;
bits<3> rx;
@ -578,7 +543,7 @@ class FEXT_RRI_A16<bits<1> _f, dag outs, dag ins, string asmstr,
class FEXT_SHIFT16<bits<2> _f, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_SHIFT16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<6> sa6;
bits<3> rx;
@ -605,7 +570,7 @@ class FEXT_SHIFT16<bits<2> _f, dag outs, dag ins, string asmstr,
class FEXT_I816<bits<3> _funct, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmEXT_I816>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<16> imm16;
bits<5> I8;
@ -630,7 +595,7 @@ class FEXT_I816<bits<3> _funct, dag outs, dag ins, string asmstr,
class FEXT_I8_SVRS16<bits<1> s_, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin, FrmI8_SVRS16>
MipsInst16_EXTEND<outs, ins, asmstr, pattern, itin>
{
bits<3> xsregs =0;
bits<8> framesize =0;
@ -659,5 +624,3 @@ class FEXT_I8_SVRS16<bits<1> s_, dag outs, dag ins, string asmstr,
}

35
lib/Target/Mips/Mips16InstrInfo.td
View File

@ -335,8 +335,7 @@ class FRRR16_ins<bits<2> _f, string asmstr, InstrItinClass itin> :
class Sel<bits<5> f1, string op, InstrItinClass itin>:
MipsInst16_32<(outs CPU16Regs:$rd_), (ins CPU16Regs:$rd, CPU16Regs:$rs,
CPU16Regs:$rt),
!strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), [], itin,
Pseudo16> {
!strconcat(op, "\t$rt, .+4\n\t\n\tmove $rd, $rs"), [], itin> {
let isCodeGenOnly=1;
let Constraints = "$rd = $rd_";
}
@ -362,8 +361,7 @@ class SeliT<bits<5> f1, string op1, bits<5> f2, string op2,
CPU16Regs:$rl, simm16:$imm),
!strconcat(op2,
!strconcat("\t$rl, $imm\n\t",
!strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
Pseudo16> {
!strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin> {
let isCodeGenOnly=1;
let Constraints = "$rd = $rd_";
}
@ -386,8 +384,7 @@ class SelT<bits<5> f1, string op1, bits<5> f2, string op2,
CPU16Regs:$rl, CPU16Regs:$rr),
!strconcat(op2,
!strconcat("\t$rl, $rr\n\t",
!strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin,
Pseudo16> {
!strconcat(op1, "\t.+4\n\tmove $rd, $rs"))), [], itin> {
let isCodeGenOnly=1;
let Constraints = "$rd = $rd_";
}
@ -448,7 +445,9 @@ def AddiuRxRxImm16: F2RI16_ins<0b01001, "addiu", IIAlu>,
let AddedComplexity = 5;
}
def AddiuRxRxImmX16: FEXT_2RI16_ins<0b01001, "addiu", IIAlu>,
ArithLogic16Defs<0>;
ArithLogic16Defs<0> {
let isCodeGenOnly = 1;
}
def AddiuRxRyOffMemX16:
FEXT_RRI_A16_mem_ins<0, "addiu", mem16_ea, IIAlu>;
@ -602,7 +601,7 @@ def JrRa16: FRR16_JALRC_RA_only_ins<0, 0, "jr", IIAlu> {
let isBarrier=1;
}
def JrcRa16: FRR16_JALRC_RA_only_ins<0, 0, "jrc", IIAlu> {
def JrcRa16: FRR16_JALRC_RA_only_ins<1, 1, "jrc", IIAlu> {
let isBranch = 1;
let isIndirectBranch = 1;
let isTerminator=1;
@ -620,7 +619,9 @@ def JrcRx16: FRR16_JALRC_ins<1, 1, 0, "jrc", IIAlu> {
// Purpose: Load Byte (Extended)
// To load a byte from memory as a signed value.
//
def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad;
def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad{
let isCodeGenOnly = 1;
}
//
// Format: LBU ry, offset(rx) MIPS16e
@ -628,14 +629,18 @@ def LbRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lb", mem16, IILoad>, MayLoad;
// To load a byte from memory as a unsigned value.
//
def LbuRxRyOffMemX16:
FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad;
FEXT_RRI16_mem_ins<0b10100, "lbu", mem16, IILoad>, MayLoad {
let isCodeGenOnly = 1;
}
//
// Format: LH ry, offset(rx) MIPS16e
// Purpose: Load Halfword signed (Extended)
// To load a halfword from memory as a signed value.
//
def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad;
def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad{
let isCodeGenOnly = 1;
}
//
// Format: LHU ry, offset(rx) MIPS16e
@ -643,7 +648,9 @@ def LhRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10100, "lh", mem16, IILoad>, MayLoad;
// To load a halfword from memory as an unsigned value.
//
def LhuRxRyOffMemX16:
FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad;
FEXT_RRI16_mem_ins<0b10100, "lhu", mem16, IILoad>, MayLoad {
let isCodeGenOnly = 1;
}
//
// Format: LI rx, immediate MIPS16e
@ -657,7 +664,9 @@ def LiRxImmX16: FEXT_RI16_ins<0b01101, "li", IIAlu>;
// Purpose: Load Word (Extended)
// To load a word from memory as a signed value.
//
def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad;
def LwRxRyOffMemX16: FEXT_RRI16_mem_ins<0b10011, "lw", mem16, IILoad>, MayLoad{
let isCodeGenOnly = 1;
}
// Format: LW rx, offset(sp) MIPS16e
// Purpose: Load Word (SP-Relative, Extended)