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llvm-6502/lib/Target/ARM/ARMInstrVFP.td
David Goodwin b2bb7db9e2 Add Cortex-A8 VFP model. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82483 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 20:52:17 +00:00

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//===- ARMInstrVFP.td - VFP 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 ARM VFP instruction set.
//
//===----------------------------------------------------------------------===//
def SDT_FTOI :
SDTypeProfile<1, 1, [SDTCisVT<0, f32>, SDTCisFP<1>]>;
def SDT_ITOF :
SDTypeProfile<1, 1, [SDTCisFP<0>, SDTCisVT<1, f32>]>;
def SDT_CMPFP0 :
SDTypeProfile<0, 1, [SDTCisFP<0>]>;
def SDT_FMDRR :
SDTypeProfile<1, 2, [SDTCisVT<0, f64>, SDTCisVT<1, i32>,
SDTCisSameAs<1, 2>]>;
def arm_ftoui : SDNode<"ARMISD::FTOUI", SDT_FTOI>;
def arm_ftosi : SDNode<"ARMISD::FTOSI", SDT_FTOI>;
def arm_sitof : SDNode<"ARMISD::SITOF", SDT_ITOF>;
def arm_uitof : SDNode<"ARMISD::UITOF", SDT_ITOF>;
def arm_fmstat : SDNode<"ARMISD::FMSTAT", SDTNone, [SDNPInFlag,SDNPOutFlag]>;
def arm_cmpfp : SDNode<"ARMISD::CMPFP", SDT_ARMCmp, [SDNPOutFlag]>;
def arm_cmpfp0 : SDNode<"ARMISD::CMPFPw0",SDT_CMPFP0, [SDNPOutFlag]>;
def arm_fmdrr : SDNode<"ARMISD::FMDRR", SDT_FMDRR>;
//===----------------------------------------------------------------------===//
// Load / store Instructions.
//
let canFoldAsLoad = 1 in {
def FLDD : ADI5<0b1101, 0b01, (outs DPR:$dst), (ins addrmode5:$addr),
IIC_fpLoad64, "fldd", " $dst, $addr",
[(set DPR:$dst, (load addrmode5:$addr))]>;
def FLDS : ASI5<0b1101, 0b01, (outs SPR:$dst), (ins addrmode5:$addr),
IIC_fpLoad32, "flds", " $dst, $addr",
[(set SPR:$dst, (load addrmode5:$addr))]>;
} // canFoldAsLoad
def FSTD : ADI5<0b1101, 0b00, (outs), (ins DPR:$src, addrmode5:$addr),
IIC_fpStore64, "fstd", " $src, $addr",
[(store DPR:$src, addrmode5:$addr)]>;
def FSTS : ASI5<0b1101, 0b00, (outs), (ins SPR:$src, addrmode5:$addr),
IIC_fpStore32, "fsts", " $src, $addr",
[(store SPR:$src, addrmode5:$addr)]>;
//===----------------------------------------------------------------------===//
// Load / store multiple Instructions.
//
let mayLoad = 1 in {
def FLDMD : AXDI5<(outs), (ins addrmode5:$addr, pred:$p, reglist:$dst1,
variable_ops), IIC_fpLoadm,
"fldm${addr:submode}d${p} ${addr:base}, $dst1",
[]> {
let Inst{20} = 1;
}
def FLDMS : AXSI5<(outs), (ins addrmode5:$addr, pred:$p, reglist:$dst1,
variable_ops), IIC_fpLoadm,
"fldm${addr:submode}s${p} ${addr:base}, $dst1",
[]> {
let Inst{20} = 1;
}
}
let mayStore = 1 in {
def FSTMD : AXDI5<(outs), (ins addrmode5:$addr, pred:$p, reglist:$src1,
variable_ops), IIC_fpStorem,
"fstm${addr:submode}d${p} ${addr:base}, $src1",
[]> {
let Inst{20} = 0;
}
def FSTMS : AXSI5<(outs), (ins addrmode5:$addr, pred:$p, reglist:$src1,
variable_ops), IIC_fpStorem,
"fstm${addr:submode}s${p} ${addr:base}, $src1",
[]> {
let Inst{20} = 0;
}
} // mayStore
// FLDMX, FSTMX - mixing S/D registers for pre-armv6 cores
//===----------------------------------------------------------------------===//
// FP Binary Operations.
//
def FADDD : ADbI<0b11100011, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
IIC_fpALU64, "faddd", " $dst, $a, $b",
[(set DPR:$dst, (fadd DPR:$a, DPR:$b))]>;
def FADDS : ASbIn<0b11100011, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
IIC_fpALU32, "fadds", " $dst, $a, $b",
[(set SPR:$dst, (fadd SPR:$a, SPR:$b))]>;
// These are encoded as unary instructions.
let Defs = [FPSCR] in {
def FCMPED : ADuI<0b11101011, 0b0100, 0b1100, (outs), (ins DPR:$a, DPR:$b),
IIC_fpCMP64, "fcmped", " $a, $b",
[(arm_cmpfp DPR:$a, DPR:$b)]>;
def FCMPES : ASuI<0b11101011, 0b0100, 0b1100, (outs), (ins SPR:$a, SPR:$b),
IIC_fpCMP32, "fcmpes", " $a, $b",
[(arm_cmpfp SPR:$a, SPR:$b)]>;
}
def FDIVD : ADbI<0b11101000, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
IIC_fpDIV64, "fdivd", " $dst, $a, $b",
[(set DPR:$dst, (fdiv DPR:$a, DPR:$b))]>;
def FDIVS : ASbI<0b11101000, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
IIC_fpDIV32, "fdivs", " $dst, $a, $b",
[(set SPR:$dst, (fdiv SPR:$a, SPR:$b))]>;
def FMULD : ADbI<0b11100010, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
IIC_fpMUL64, "fmuld", " $dst, $a, $b",
[(set DPR:$dst, (fmul DPR:$a, DPR:$b))]>;
def FMULS : ASbIn<0b11100010, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
IIC_fpMUL32, "fmuls", " $dst, $a, $b",
[(set SPR:$dst, (fmul SPR:$a, SPR:$b))]>;
def FNMULD : ADbI<0b11100010, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
IIC_fpMUL64, "fnmuld", " $dst, $a, $b",
[(set DPR:$dst, (fneg (fmul DPR:$a, DPR:$b)))]> {
let Inst{6} = 1;
}
def FNMULS : ASbI<0b11100010, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
IIC_fpMUL32, "fnmuls", " $dst, $a, $b",
[(set SPR:$dst, (fneg (fmul SPR:$a, SPR:$b)))]> {
let Inst{6} = 1;
}
// Match reassociated forms only if not sign dependent rounding.
def : Pat<(fmul (fneg DPR:$a), DPR:$b),
(FNMULD DPR:$a, DPR:$b)>, Requires<[NoHonorSignDependentRounding]>;
def : Pat<(fmul (fneg SPR:$a), SPR:$b),
(FNMULS SPR:$a, SPR:$b)>, Requires<[NoHonorSignDependentRounding]>;
def FSUBD : ADbI<0b11100011, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
IIC_fpALU64, "fsubd", " $dst, $a, $b",
[(set DPR:$dst, (fsub DPR:$a, DPR:$b))]> {
let Inst{6} = 1;
}
def FSUBS : ASbIn<0b11100011, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
IIC_fpALU32, "fsubs", " $dst, $a, $b",
[(set SPR:$dst, (fsub SPR:$a, SPR:$b))]> {
let Inst{6} = 1;
}
//===----------------------------------------------------------------------===//
// FP Unary Operations.
//
def FABSD : ADuI<0b11101011, 0b0000, 0b1100, (outs DPR:$dst), (ins DPR:$a),
IIC_fpUNA64, "fabsd", " $dst, $a",
[(set DPR:$dst, (fabs DPR:$a))]>;
def FABSS : ASuIn<0b11101011, 0b0000, 0b1100, (outs SPR:$dst), (ins SPR:$a),
IIC_fpUNA32, "fabss", " $dst, $a",
[(set SPR:$dst, (fabs SPR:$a))]>;
let Defs = [FPSCR] in {
def FCMPEZD : ADuI<0b11101011, 0b0101, 0b1100, (outs), (ins DPR:$a),
IIC_fpCMP64, "fcmpezd", " $a",
[(arm_cmpfp0 DPR:$a)]>;
def FCMPEZS : ASuI<0b11101011, 0b0101, 0b1100, (outs), (ins SPR:$a),
IIC_fpCMP32, "fcmpezs", " $a",
[(arm_cmpfp0 SPR:$a)]>;
}
def FCVTDS : ASuI<0b11101011, 0b0111, 0b1100, (outs DPR:$dst), (ins SPR:$a),
IIC_fpCVTDS, "fcvtds", " $dst, $a",
[(set DPR:$dst, (fextend SPR:$a))]>;
// Special case encoding: bits 11-8 is 0b1011.
def FCVTSD : VFPAI<(outs SPR:$dst), (ins DPR:$a), VFPUnaryFrm,
IIC_fpCVTSD, "fcvtsd", " $dst, $a",
[(set SPR:$dst, (fround DPR:$a))]> {
let Inst{27-23} = 0b11101;
let Inst{21-16} = 0b110111;
let Inst{11-8} = 0b1011;
let Inst{7-4} = 0b1100;
}
let neverHasSideEffects = 1 in {
def FCPYD : ADuI<0b11101011, 0b0000, 0b0100, (outs DPR:$dst), (ins DPR:$a),
IIC_fpUNA64, "fcpyd", " $dst, $a", []>;
def FCPYS : ASuI<0b11101011, 0b0000, 0b0100, (outs SPR:$dst), (ins SPR:$a),
IIC_fpUNA32, "fcpys", " $dst, $a", []>;
} // neverHasSideEffects
def FNEGD : ADuI<0b11101011, 0b0001, 0b0100, (outs DPR:$dst), (ins DPR:$a),
IIC_fpUNA64, "fnegd", " $dst, $a",
[(set DPR:$dst, (fneg DPR:$a))]>;
def FNEGS : ASuIn<0b11101011, 0b0001, 0b0100, (outs SPR:$dst), (ins SPR:$a),
IIC_fpUNA32, "fnegs", " $dst, $a",
[(set SPR:$dst, (fneg SPR:$a))]>;
def FSQRTD : ADuI<0b11101011, 0b0001, 0b1100, (outs DPR:$dst), (ins DPR:$a),
IIC_fpSQRT64, "fsqrtd", " $dst, $a",
[(set DPR:$dst, (fsqrt DPR:$a))]>;
def FSQRTS : ASuI<0b11101011, 0b0001, 0b1100, (outs SPR:$dst), (ins SPR:$a),
IIC_fpSQRT32, "fsqrts", " $dst, $a",
[(set SPR:$dst, (fsqrt SPR:$a))]>;
//===----------------------------------------------------------------------===//
// FP <-> GPR Copies. Int <-> FP Conversions.
//
def FMRS : AVConv2I<0b11100001, 0b1010, (outs GPR:$dst), (ins SPR:$src),
IIC_fpMOVSI, "fmrs", " $dst, $src",
[(set GPR:$dst, (bitconvert SPR:$src))]>;
def FMSR : AVConv4I<0b11100000, 0b1010, (outs SPR:$dst), (ins GPR:$src),
IIC_fpMOVIS, "fmsr", " $dst, $src",
[(set SPR:$dst, (bitconvert GPR:$src))]>;
def FMRRD : AVConv3I<0b11000101, 0b1011,
(outs GPR:$dst1, GPR:$dst2), (ins DPR:$src),
IIC_fpMOVDI, "fmrrd", " $dst1, $dst2, $src",
[/* FIXME: Can't write pattern for multiple result instr*/]>;
// FMDHR: GPR -> SPR
// FMDLR: GPR -> SPR
def FMDRR : AVConv5I<0b11000100, 0b1011,
(outs DPR:$dst), (ins GPR:$src1, GPR:$src2),
IIC_fpMOVID, "fmdrr", " $dst, $src1, $src2",
[(set DPR:$dst, (arm_fmdrr GPR:$src1, GPR:$src2))]>;
// FMRDH: SPR -> GPR
// FMRDL: SPR -> GPR
// FMRRS: SPR -> GPR
// FMRX : SPR system reg -> GPR
// FMSRR: GPR -> SPR
// FMXR: GPR -> VFP Sstem reg
// Int to FP:
def FSITOD : AVConv1I<0b11101011, 0b1000, 0b1011, (outs DPR:$dst), (ins SPR:$a),
IIC_fpCVTID, "fsitod", " $dst, $a",
[(set DPR:$dst, (arm_sitof SPR:$a))]> {
let Inst{7} = 1;
}
def FSITOS : AVConv1In<0b11101011, 0b1000, 0b1010, (outs SPR:$dst),(ins SPR:$a),
IIC_fpCVTIS, "fsitos", " $dst, $a",
[(set SPR:$dst, (arm_sitof SPR:$a))]> {
let Inst{7} = 1;
}
def FUITOD : AVConv1I<0b11101011, 0b1000, 0b1011, (outs DPR:$dst), (ins SPR:$a),
IIC_fpCVTID, "fuitod", " $dst, $a",
[(set DPR:$dst, (arm_uitof SPR:$a))]>;
def FUITOS : AVConv1In<0b11101011, 0b1000, 0b1010, (outs SPR:$dst),(ins SPR:$a),
IIC_fpCVTIS, "fuitos", " $dst, $a",
[(set SPR:$dst, (arm_uitof SPR:$a))]>;
// FP to Int:
// Always set Z bit in the instruction, i.e. "round towards zero" variants.
def FTOSIZD : AVConv1I<0b11101011, 0b1101, 0b1011,
(outs SPR:$dst), (ins DPR:$a),
IIC_fpCVTDI, "ftosizd", " $dst, $a",
[(set SPR:$dst, (arm_ftosi DPR:$a))]> {
let Inst{7} = 1; // Z bit
}
def FTOSIZS : AVConv1In<0b11101011, 0b1101, 0b1010,
(outs SPR:$dst), (ins SPR:$a),
IIC_fpCVTSI, "ftosizs", " $dst, $a",
[(set SPR:$dst, (arm_ftosi SPR:$a))]> {
let Inst{7} = 1; // Z bit
}
def FTOUIZD : AVConv1I<0b11101011, 0b1100, 0b1011,
(outs SPR:$dst), (ins DPR:$a),
IIC_fpCVTDI, "ftouizd", " $dst, $a",
[(set SPR:$dst, (arm_ftoui DPR:$a))]> {
let Inst{7} = 1; // Z bit
}
def FTOUIZS : AVConv1In<0b11101011, 0b1100, 0b1010,
(outs SPR:$dst), (ins SPR:$a),
IIC_fpCVTSI, "ftouizs", " $dst, $a",
[(set SPR:$dst, (arm_ftoui SPR:$a))]> {
let Inst{7} = 1; // Z bit
}
//===----------------------------------------------------------------------===//
// FP FMA Operations.
//
def FMACD : ADbI<0b11100000, (outs DPR:$dst), (ins DPR:$dstin, DPR:$a, DPR:$b),
IIC_fpMAC64, "fmacd", " $dst, $a, $b",
[(set DPR:$dst, (fadd (fmul DPR:$a, DPR:$b), DPR:$dstin))]>,
RegConstraint<"$dstin = $dst">;
def FMACS : ASbIn<0b11100000, (outs SPR:$dst), (ins SPR:$dstin, SPR:$a, SPR:$b),
IIC_fpMAC32, "fmacs", " $dst, $a, $b",
[(set SPR:$dst, (fadd (fmul SPR:$a, SPR:$b), SPR:$dstin))]>,
RegConstraint<"$dstin = $dst">;
def FMSCD : ADbI<0b11100001, (outs DPR:$dst), (ins DPR:$dstin, DPR:$a, DPR:$b),
IIC_fpMAC64, "fmscd", " $dst, $a, $b",
[(set DPR:$dst, (fsub (fmul DPR:$a, DPR:$b), DPR:$dstin))]>,
RegConstraint<"$dstin = $dst">;
def FMSCS : ASbI<0b11100001, (outs SPR:$dst), (ins SPR:$dstin, SPR:$a, SPR:$b),
IIC_fpMAC32, "fmscs", " $dst, $a, $b",
[(set SPR:$dst, (fsub (fmul SPR:$a, SPR:$b), SPR:$dstin))]>,
RegConstraint<"$dstin = $dst">;
def FNMACD : ADbI<0b11100000, (outs DPR:$dst), (ins DPR:$dstin, DPR:$a, DPR:$b),
IIC_fpMAC64, "fnmacd", " $dst, $a, $b",
[(set DPR:$dst, (fadd (fneg (fmul DPR:$a, DPR:$b)), DPR:$dstin))]>,
RegConstraint<"$dstin = $dst"> {
let Inst{6} = 1;
}
def FNMACS : ASbIn<0b11100000, (outs SPR:$dst), (ins SPR:$dstin, SPR:$a, SPR:$b),
IIC_fpMAC32, "fnmacs", " $dst, $a, $b",
[(set SPR:$dst, (fadd (fneg (fmul SPR:$a, SPR:$b)), SPR:$dstin))]>,
RegConstraint<"$dstin = $dst"> {
let Inst{6} = 1;
}
def : Pat<(fsub DPR:$dstin, (fmul DPR:$a, DPR:$b)),
(FNMACD DPR:$dstin, DPR:$a, DPR:$b)>, Requires<[DontUseNEONForFP]>;
def : Pat<(fsub SPR:$dstin, (fmul SPR:$a, SPR:$b)),
(FNMACS SPR:$dstin, SPR:$a, SPR:$b)>, Requires<[DontUseNEONForFP]>;
def FNMSCD : ADbI<0b11100001, (outs DPR:$dst), (ins DPR:$dstin, DPR:$a, DPR:$b),
IIC_fpMAC64, "fnmscd", " $dst, $a, $b",
[(set DPR:$dst, (fsub (fneg (fmul DPR:$a, DPR:$b)), DPR:$dstin))]>,
RegConstraint<"$dstin = $dst"> {
let Inst{6} = 1;
}
def FNMSCS : ASbI<0b11100001, (outs SPR:$dst), (ins SPR:$dstin, SPR:$a, SPR:$b),
IIC_fpMAC32, "fnmscs", " $dst, $a, $b",
[(set SPR:$dst, (fsub (fneg (fmul SPR:$a, SPR:$b)), SPR:$dstin))]>,
RegConstraint<"$dstin = $dst"> {
let Inst{6} = 1;
}
//===----------------------------------------------------------------------===//
// FP Conditional moves.
//
def FCPYDcc : ADuI<0b11101011, 0b0000, 0b0100,
(outs DPR:$dst), (ins DPR:$false, DPR:$true),
IIC_fpUNA64, "fcpyd", " $dst, $true",
[/*(set DPR:$dst, (ARMcmov DPR:$false, DPR:$true, imm:$cc))*/]>,
RegConstraint<"$false = $dst">;
def FCPYScc : ASuI<0b11101011, 0b0000, 0b0100,
(outs SPR:$dst), (ins SPR:$false, SPR:$true),
IIC_fpUNA32, "fcpys", " $dst, $true",
[/*(set SPR:$dst, (ARMcmov SPR:$false, SPR:$true, imm:$cc))*/]>,
RegConstraint<"$false = $dst">;
def FNEGDcc : ADuI<0b11101011, 0b0001, 0b0100,
(outs DPR:$dst), (ins DPR:$false, DPR:$true),
IIC_fpUNA64, "fnegd", " $dst, $true",
[/*(set DPR:$dst, (ARMcneg DPR:$false, DPR:$true, imm:$cc))*/]>,
RegConstraint<"$false = $dst">;
def FNEGScc : ASuI<0b11101011, 0b0001, 0b0100,
(outs SPR:$dst), (ins SPR:$false, SPR:$true),
IIC_fpUNA32, "fnegs", " $dst, $true",
[/*(set SPR:$dst, (ARMcneg SPR:$false, SPR:$true, imm:$cc))*/]>,
RegConstraint<"$false = $dst">;
//===----------------------------------------------------------------------===//
// Misc.
//
let Defs = [CPSR], Uses = [FPSCR] in
def FMSTAT : VFPAI<(outs), (ins), VFPMiscFrm, IIC_fpSTAT, "fmstat", "", [(arm_fmstat)]> {
let Inst{27-20} = 0b11101111;
let Inst{19-16} = 0b0001;
let Inst{15-12} = 0b1111;
let Inst{11-8} = 0b1010;
let Inst{7} = 0;
let Inst{4} = 1;
}
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