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llvm-6502/lib/Target/R600/SIInstrFormats.td
Tom Stellard e340b7728a R600/SI: Use same names for corresponding MUBUF operands and encoding fields 
The code emitter knows how to encode operands whose name matches one of
the encoding fields.  If there is no match, the code emitter relies on
the order of the operand and field definitions to determine how operands
should be encoding.  Matching by order makes it easy to accidentally break
the instruction encodings, so we prefer to match by name.

Reviewed-by: Christian König <christian.koenig@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178930 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-05 23:31:44 +00:00

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//===-- SIInstrFormats.td - SI Instruction Encodings ----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// SI Instruction format definitions.
//
//===----------------------------------------------------------------------===//
class InstSI <dag outs, dag ins, string asm, list<dag> pattern> :
AMDGPUInst<outs, ins, asm, pattern> {
field bits<1> VM_CNT = 0;
field bits<1> EXP_CNT = 0;
field bits<1> LGKM_CNT = 0;
let TSFlags{0} = VM_CNT;
let TSFlags{1} = EXP_CNT;
let TSFlags{2} = LGKM_CNT;
}
class Enc32 <dag outs, dag ins, string asm, list<dag> pattern> :
InstSI <outs, ins, asm, pattern> {
field bits<32> Inst;
let Size = 4;
}
class Enc64 <dag outs, dag ins, string asm, list<dag> pattern> :
InstSI <outs, ins, asm, pattern> {
field bits<64> Inst;
let Size = 8;
}
//===----------------------------------------------------------------------===//
// Scalar operations
//===----------------------------------------------------------------------===//
class SOP1 <bits<8> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32<outs, ins, asm, pattern> {
bits<7> SDST;
bits<8> SSRC0;
let Inst{7-0} = SSRC0;
let Inst{15-8} = op;
let Inst{22-16} = SDST;
let Inst{31-23} = 0x17d; //encoding;
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class SOP2 <bits<7> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32 <outs, ins, asm, pattern> {
bits<7> SDST;
bits<8> SSRC0;
bits<8> SSRC1;
let Inst{7-0} = SSRC0;
let Inst{15-8} = SSRC1;
let Inst{22-16} = SDST;
let Inst{29-23} = op;
let Inst{31-30} = 0x2; // encoding
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class SOPC <bits<7> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32<outs, ins, asm, pattern> {
bits<8> SSRC0;
bits<8> SSRC1;
let Inst{7-0} = SSRC0;
let Inst{15-8} = SSRC1;
let Inst{22-16} = op;
let Inst{31-23} = 0x17e;
let DisableEncoding = "$dst";
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class SOPK <bits<5> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32 <outs, ins , asm, pattern> {
bits <7> SDST;
bits <16> SIMM16;
let Inst{15-0} = SIMM16;
let Inst{22-16} = SDST;
let Inst{27-23} = op;
let Inst{31-28} = 0xb; //encoding
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class SOPP <bits<7> op, dag ins, string asm, list<dag> pattern> : Enc32 <
(outs),
ins,
asm,
pattern > {
bits <16> SIMM16;
let Inst{15-0} = SIMM16;
let Inst{22-16} = op;
let Inst{31-23} = 0x17f; // encoding
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class SMRD <bits<5> op, bits<1> imm, dag outs, dag ins, string asm,
list<dag> pattern> : Enc32<outs, ins, asm, pattern> {
bits<7> SDST;
bits<7> SBASE;
bits<8> OFFSET;
let Inst{7-0} = OFFSET;
let Inst{8} = imm;
let Inst{14-9} = SBASE{6-1};
let Inst{21-15} = SDST;
let Inst{26-22} = op;
let Inst{31-27} = 0x18; //encoding
let LGKM_CNT = 1;
}
//===----------------------------------------------------------------------===//
// Vector ALU operations
//===----------------------------------------------------------------------===//
let Uses = [EXEC] in {
class VOP1 <bits<8> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32 <outs, ins, asm, pattern> {
bits<8> VDST;
bits<9> SRC0;
let Inst{8-0} = SRC0;
let Inst{16-9} = op;
let Inst{24-17} = VDST;
let Inst{31-25} = 0x3f; //encoding
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class VOP2 <bits<6> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32 <outs, ins, asm, pattern> {
bits<8> VDST;
bits<9> SRC0;
bits<8> VSRC1;
let Inst{8-0} = SRC0;
let Inst{16-9} = VSRC1;
let Inst{24-17} = VDST;
let Inst{30-25} = op;
let Inst{31} = 0x0; //encoding
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class VOP3 <bits<9> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc64 <outs, ins, asm, pattern> {
bits<8> VDST;
bits<9> SRC0;
bits<9> SRC1;
bits<9> SRC2;
bits<3> ABS;
bits<1> CLAMP;
bits<2> OMOD;
bits<3> NEG;
let Inst{7-0} = VDST;
let Inst{10-8} = ABS;
let Inst{11} = CLAMP;
let Inst{25-17} = op;
let Inst{31-26} = 0x34; //encoding
let Inst{40-32} = SRC0;
let Inst{49-41} = SRC1;
let Inst{58-50} = SRC2;
let Inst{60-59} = OMOD;
let Inst{63-61} = NEG;
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class VOP3b <bits<9> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc64 <outs, ins, asm, pattern> {
bits<8> VDST;
bits<9> SRC0;
bits<9> SRC1;
bits<9> SRC2;
bits<7> SDST;
bits<2> OMOD;
bits<3> NEG;
let Inst{7-0} = VDST;
let Inst{14-8} = SDST;
let Inst{25-17} = op;
let Inst{31-26} = 0x34; //encoding
let Inst{40-32} = SRC0;
let Inst{49-41} = SRC1;
let Inst{58-50} = SRC2;
let Inst{60-59} = OMOD;
let Inst{63-61} = NEG;
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class VOPC <bits<8> op, dag ins, string asm, list<dag> pattern> :
Enc32 <(outs VCCReg:$dst), ins, asm, pattern> {
bits<9> SRC0;
bits<8> VSRC1;
let Inst{8-0} = SRC0;
let Inst{16-9} = VSRC1;
let Inst{24-17} = op;
let Inst{31-25} = 0x3e;
let DisableEncoding = "$dst";
let mayLoad = 0;
let mayStore = 0;
let hasSideEffects = 0;
}
class VINTRP <bits <2> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc32 <outs, ins, asm, pattern> {
bits<8> VDST;
bits<8> VSRC;
bits<2> ATTRCHAN;
bits<6> ATTR;
let Inst{7-0} = VSRC;
let Inst{9-8} = ATTRCHAN;
let Inst{15-10} = ATTR;
let Inst{17-16} = op;
let Inst{25-18} = VDST;
let Inst{31-26} = 0x32; // encoding
let neverHasSideEffects = 1;
let mayLoad = 1;
let mayStore = 0;
}
} // End Uses = [EXEC]
//===----------------------------------------------------------------------===//
// Vector I/O operations
//===----------------------------------------------------------------------===//
let Uses = [EXEC] in {
class MUBUF <bits<7> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc64<outs, ins, asm, pattern> {
bits<12> offset;
bits<1> offen;
bits<1> idxen;
bits<1> glc;
bits<1> addr64;
bits<1> lds;
bits<8> vaddr;
bits<8> vdata;
bits<7> srsrc;
bits<1> slc;
bits<1> tfe;
bits<8> soffset;
let Inst{11-0} = offset;
let Inst{12} = offen;
let Inst{13} = idxen;
let Inst{14} = glc;
let Inst{15} = addr64;
let Inst{16} = lds;
let Inst{24-18} = op;
let Inst{31-26} = 0x38; //encoding
let Inst{39-32} = vaddr;
let Inst{47-40} = vdata;
let Inst{52-48} = srsrc{6-2};
let Inst{54} = slc;
let Inst{55} = tfe;
let Inst{63-56} = soffset;
let VM_CNT = 1;
let EXP_CNT = 1;
let neverHasSideEffects = 1;
}
class MTBUF <bits<3> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc64<outs, ins, asm, pattern> {
bits<8> VDATA;
bits<12> OFFSET;
bits<1> OFFEN;
bits<1> IDXEN;
bits<1> GLC;
bits<1> ADDR64;
bits<4> DFMT;
bits<3> NFMT;
bits<8> VADDR;
bits<7> SRSRC;
bits<1> SLC;
bits<1> TFE;
bits<8> SOFFSET;
let Inst{11-0} = OFFSET;
let Inst{12} = OFFEN;
let Inst{13} = IDXEN;
let Inst{14} = GLC;
let Inst{15} = ADDR64;
let Inst{18-16} = op;
let Inst{22-19} = DFMT;
let Inst{25-23} = NFMT;
let Inst{31-26} = 0x3a; //encoding
let Inst{39-32} = VADDR;
let Inst{47-40} = VDATA;
let Inst{52-48} = SRSRC{6-2};
let Inst{54} = SLC;
let Inst{55} = TFE;
let Inst{63-56} = SOFFSET;
let VM_CNT = 1;
let EXP_CNT = 1;
let neverHasSideEffects = 1;
}
class MIMG <bits<7> op, dag outs, dag ins, string asm, list<dag> pattern> :
Enc64 <outs, ins, asm, pattern> {
bits<8> VDATA;
bits<4> DMASK;
bits<1> UNORM;
bits<1> GLC;
bits<1> DA;
bits<1> R128;
bits<1> TFE;
bits<1> LWE;
bits<1> SLC;
bits<8> VADDR;
bits<7> SRSRC;
bits<7> SSAMP;
let Inst{11-8} = DMASK;
let Inst{12} = UNORM;
let Inst{13} = GLC;
let Inst{14} = DA;
let Inst{15} = R128;
let Inst{16} = TFE;
let Inst{17} = LWE;
let Inst{24-18} = op;
let Inst{25} = SLC;
let Inst{31-26} = 0x3c;
let Inst{39-32} = VADDR;
let Inst{47-40} = VDATA;
let Inst{52-48} = SRSRC{6-2};
let Inst{57-53} = SSAMP{6-2};
let VM_CNT = 1;
let EXP_CNT = 1;
}
def EXP : Enc64<
(outs),
(ins i32imm:$en, i32imm:$tgt, i32imm:$compr, i32imm:$done, i32imm:$vm,
VReg_32:$src0, VReg_32:$src1, VReg_32:$src2, VReg_32:$src3),
"EXP $en, $tgt, $compr, $done, $vm, $src0, $src1, $src2, $src3",
[] > {
bits<4> EN;
bits<6> TGT;
bits<1> COMPR;
bits<1> DONE;
bits<1> VM;
bits<8> VSRC0;
bits<8> VSRC1;
bits<8> VSRC2;
bits<8> VSRC3;
let Inst{3-0} = EN;
let Inst{9-4} = TGT;
let Inst{10} = COMPR;
let Inst{11} = DONE;
let Inst{12} = VM;
let Inst{31-26} = 0x3e;
let Inst{39-32} = VSRC0;
let Inst{47-40} = VSRC1;
let Inst{55-48} = VSRC2;
let Inst{63-56} = VSRC3;
let EXP_CNT = 1;
}
} // End Uses = [EXEC]
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