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llvm-project/llvm/lib/Target/AMDGPU/VOP3PInstructions.td

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//===-- VOP3PInstructions.td - Vector Instruction Defintions --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// VOP3P Classes
//===----------------------------------------------------------------------===//
class VOP3PInst<string OpName, VOPProfile P, SDPatternOperator node = null_frag> :
VOP3P_Pseudo<OpName, P,
!if(P.HasModifiers, getVOP3PModPat<P, node>.ret, getVOP3Pat<P, node>.ret)
>;
// Non-packed instructions that use the VOP3P encoding.
// VOP3 neg/abs and VOP3P opsel/opsel_hi modifiers are allowed.
class VOP3_VOP3PInst<string OpName, VOPProfile P, bit UseTiedOutput = 0,
SDPatternOperator node = null_frag> :
VOP3P_Pseudo<OpName, P> {
// These operands are only sort of f16 operands. Depending on
// op_sel_hi, these may be interpreted as f32. The inline immediate
// values are really f16 converted to f32, so we treat these as f16
// operands.
let InOperandList =
!con(
!con(
(ins FP16InputMods:$src0_modifiers, VCSrc_f16:$src0,
FP16InputMods:$src1_modifiers, VCSrc_f16:$src1,
FP16InputMods:$src2_modifiers, VCSrc_f16:$src2,
clampmod:$clamp),
!if(UseTiedOutput, (ins VGPR_32:$vdst_in), (ins))),
(ins op_sel:$op_sel, op_sel_hi:$op_sel_hi));
let Constraints = !if(UseTiedOutput, "$vdst = $vdst_in", "");
let DisableEncoding = !if(UseTiedOutput, "$vdst_in", "");
let AsmOperands =
" $vdst, $src0_modifiers, $src1_modifiers, $src2_modifiers$op_sel$op_sel_hi$clamp";
}
let isCommutable = 1 in {
def V_PK_MAD_I16 : VOP3PInst<"v_pk_mad_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16_V2I16>>;
def V_PK_MAD_U16 : VOP3PInst<"v_pk_mad_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16_V2I16>>;
let FPDPRounding = 1 in {
def V_PK_FMA_F16 : VOP3PInst<"v_pk_fma_f16", VOP3_Profile<VOP_V2F16_V2F16_V2F16_V2F16>, fma>;
def V_PK_ADD_F16 : VOP3PInst<"v_pk_add_f16", VOP3_Profile<VOP_V2F16_V2F16_V2F16>, fadd>;
def V_PK_MUL_F16 : VOP3PInst<"v_pk_mul_f16", VOP3_Profile<VOP_V2F16_V2F16_V2F16>, fmul>;
} // End FPDPRounding = 1
def V_PK_MAX_F16 : VOP3PInst<"v_pk_max_f16", VOP3_Profile<VOP_V2F16_V2F16_V2F16>, fmaxnum_like>;
def V_PK_MIN_F16 : VOP3PInst<"v_pk_min_f16", VOP3_Profile<VOP_V2F16_V2F16_V2F16>, fminnum_like>;
def V_PK_ADD_U16 : VOP3PInst<"v_pk_add_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, add>;
def V_PK_ADD_I16 : VOP3PInst<"v_pk_add_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>>;
def V_PK_MUL_LO_U16 : VOP3PInst<"v_pk_mul_lo_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, mul>;
def V_PK_MIN_I16 : VOP3PInst<"v_pk_min_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, smin>;
def V_PK_MIN_U16 : VOP3PInst<"v_pk_min_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, umin>;
def V_PK_MAX_I16 : VOP3PInst<"v_pk_max_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, smax>;
def V_PK_MAX_U16 : VOP3PInst<"v_pk_max_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, umax>;
}
def V_PK_SUB_U16 : VOP3PInst<"v_pk_sub_u16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>>;
def V_PK_SUB_I16 : VOP3PInst<"v_pk_sub_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, sub>;
def V_PK_LSHLREV_B16 : VOP3PInst<"v_pk_lshlrev_b16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, lshl_rev>;
def V_PK_ASHRREV_I16 : VOP3PInst<"v_pk_ashrrev_i16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, ashr_rev>;
def V_PK_LSHRREV_B16 : VOP3PInst<"v_pk_lshrrev_b16", VOP3_Profile<VOP_V2I16_V2I16_V2I16>, lshr_rev>;
multiclass MadFmaMixPats<SDPatternOperator fma_like,
Instruction mix_inst,
Instruction mixlo_inst,
Instruction mixhi_inst> {
def : GCNPat <
(f16 (fpround (fma_like (f32 (VOP3PMadMixMods f16:$src0, i32:$src0_modifiers)),
(f32 (VOP3PMadMixMods f16:$src1, i32:$src1_modifiers)),
(f32 (VOP3PMadMixMods f16:$src2, i32:$src2_modifiers))))),
(mixlo_inst $src0_modifiers, $src0,
$src1_modifiers, $src1,
$src2_modifiers, $src2,
DSTCLAMP.NONE,
(i32 (IMPLICIT_DEF)))
>;
// FIXME: Special case handling for maxhi (especially for clamp)
// because dealing with the write to high half of the register is
// difficult.
def : GCNPat <
(build_vector f16:$elt0, (fpround (fma_like (f32 (VOP3PMadMixMods f16:$src0, i32:$src0_modifiers)),
(f32 (VOP3PMadMixMods f16:$src1, i32:$src1_modifiers)),
(f32 (VOP3PMadMixMods f16:$src2, i32:$src2_modifiers))))),
(v2f16 (mixhi_inst $src0_modifiers, $src0,
$src1_modifiers, $src1,
$src2_modifiers, $src2,
DSTCLAMP.NONE,
$elt0))
>;
def : GCNPat <
(build_vector
f16:$elt0,
(AMDGPUclamp (fpround (fma_like (f32 (VOP3PMadMixMods f16:$src0, i32:$src0_modifiers)),
(f32 (VOP3PMadMixMods f16:$src1, i32:$src1_modifiers)),
(f32 (VOP3PMadMixMods f16:$src2, i32:$src2_modifiers)))))),
(v2f16 (mixhi_inst $src0_modifiers, $src0,
$src1_modifiers, $src1,
$src2_modifiers, $src2,
DSTCLAMP.ENABLE,
$elt0))
>;
def : GCNPat <
(AMDGPUclamp (build_vector
(fpround (fma_like (f32 (VOP3PMadMixMods f16:$lo_src0, i32:$lo_src0_modifiers)),
(f32 (VOP3PMadMixMods f16:$lo_src1, i32:$lo_src1_modifiers)),
(f32 (VOP3PMadMixMods f16:$lo_src2, i32:$lo_src2_modifiers)))),
(fpround (fma_like (f32 (VOP3PMadMixMods f16:$hi_src0, i32:$hi_src0_modifiers)),
(f32 (VOP3PMadMixMods f16:$hi_src1, i32:$hi_src1_modifiers)),
(f32 (VOP3PMadMixMods f16:$hi_src2, i32:$hi_src2_modifiers)))))),
(v2f16 (mixhi_inst $hi_src0_modifiers, $hi_src0,
$hi_src1_modifiers, $hi_src1,
$hi_src2_modifiers, $hi_src2,
DSTCLAMP.ENABLE,
(mixlo_inst $lo_src0_modifiers, $lo_src0,
$lo_src1_modifiers, $lo_src1,
$lo_src2_modifiers, $lo_src2,
DSTCLAMP.ENABLE,
(i32 (IMPLICIT_DEF)))))
>;
}
let SubtargetPredicate = HasMadMixInsts in {
// These are VOP3a-like opcodes which accept no omod.
// Size of src arguments (16/32) is controlled by op_sel.
// For 16-bit src arguments their location (hi/lo) are controlled by op_sel_hi.
let isCommutable = 1 in {
def V_MAD_MIX_F32 : VOP3_VOP3PInst<"v_mad_mix_f32", VOP3_Profile<VOP_F32_F16_F16_F16, VOP3_OPSEL>>;
let FPDPRounding = 1 in {
// Clamp modifier is applied after conversion to f16.
def V_MAD_MIXLO_F16 : VOP3_VOP3PInst<"v_mad_mixlo_f16", VOP3_Profile<VOP_F16_F16_F16_F16, VOP3_OPSEL>, 1>;
let ClampLo = 0, ClampHi = 1 in {
def V_MAD_MIXHI_F16 : VOP3_VOP3PInst<"v_mad_mixhi_f16", VOP3_Profile<VOP_F16_F16_F16_F16, VOP3_OPSEL>, 1>;
}
} // End FPDPRounding = 1
}
defm : MadFmaMixPats<fmad, V_MAD_MIX_F32, V_MAD_MIXLO_F16, V_MAD_MIXHI_F16>;
} // End SubtargetPredicate = HasMadMixInsts
// Essentially the same as the mad_mix versions
let SubtargetPredicate = HasFmaMixInsts in {
let isCommutable = 1 in {
def V_FMA_MIX_F32 : VOP3_VOP3PInst<"v_fma_mix_f32", VOP3_Profile<VOP_F32_F16_F16_F16, VOP3_OPSEL>>;
let FPDPRounding = 1 in {
// Clamp modifier is applied after conversion to f16.
def V_FMA_MIXLO_F16 : VOP3_VOP3PInst<"v_fma_mixlo_f16", VOP3_Profile<VOP_F16_F16_F16_F16, VOP3_OPSEL>, 1>;
let ClampLo = 0, ClampHi = 1 in {
def V_FMA_MIXHI_F16 : VOP3_VOP3PInst<"v_fma_mixhi_f16", VOP3_Profile<VOP_F16_F16_F16_F16, VOP3_OPSEL>, 1>;
}
} // End FPDPRounding = 1
}
defm : MadFmaMixPats<fma, V_FMA_MIX_F32, V_FMA_MIXLO_F16, V_FMA_MIXHI_F16>;
}
// Defines patterns that extract signed 4bit from each Idx[0].
foreach Idx = [[0,28],[4,24],[8,20],[12,16],[16,12],[20,8],[24,4]] in
def ExtractSigned4bit_#Idx[0] : PatFrag<(ops node:$src),
(sra (shl node:$src, (i32 Idx[1])), (i32 28))>;
// Defines code pattern that extracts U(unsigned/signed) 4/8bit from FromBitIndex.
class Extract<int FromBitIndex, int BitMask, bit U>: PatFrag<
(ops node:$src),
!if (!or (!and (!eq (BitMask, 255), !eq (FromBitIndex, 24)), !eq (FromBitIndex, 28)), // last element
!if (U, (srl node:$src, (i32 FromBitIndex)), (sra node:$src, (i32 FromBitIndex))),
!if (!eq (FromBitIndex, 0), // first element
!if (U, (and node:$src, (i32 BitMask)),
!if (!eq (BitMask, 15), (!cast<PatFrag>("ExtractSigned4bit_"#FromBitIndex) node:$src),
(sext_inreg node:$src, i8))),
!if (U, (and (srl node:$src, (i32 FromBitIndex)), (i32 BitMask)),
!if (!eq (BitMask, 15), (!cast<PatFrag>("ExtractSigned4bit_"#FromBitIndex) node:$src),
(sext_inreg (srl node:$src, (i32 FromBitIndex)), i8)))))>;
foreach Type = ["I", "U"] in
foreach Index = 0-3 in {
// Defines patterns that extract each Index'ed 8bit from an unsigned
// 32bit scalar value;
def #Type#Index#"_8bit" : Extract<!shl(Index, 3), 255, !if (!eq (Type, "U"), 1, 0)>;
// Defines multiplication patterns where the multiplication is happening on each
// Index'ed 8bit of a 32bit scalar value.
def Mul#Type#_Elt#Index : PatFrag<
(ops node:$src0, node:$src1),
(!cast<HasOneUseBinOp>(!if (!eq (Type, "I"), AMDGPUmul_i24_oneuse, AMDGPUmul_u24_oneuse))
(!cast<Extract>(#Type#Index#"_8bit") node:$src0),
(!cast<Extract>(#Type#Index#"_8bit") node:$src1))>;
}
// Different variants of dot8 patterns cause a huge increase in the compile time.
// Define non-associative/commutative add/mul to prevent permutation in the dot8
// pattern.
def NonACAdd : SDNode<"ISD::ADD" , SDTIntBinOp>;
def NonACAdd_oneuse : HasOneUseBinOp<NonACAdd>;
def NonACAMDGPUmul_u24 : SDNode<"AMDGPUISD::MUL_U24" , SDTIntBinOp>;
def NonACAMDGPUmul_u24_oneuse : HasOneUseBinOp<NonACAMDGPUmul_u24>;
def NonACAMDGPUmul_i24 : SDNode<"AMDGPUISD::MUL_I24" , SDTIntBinOp>;
def NonACAMDGPUmul_i24_oneuse : HasOneUseBinOp<NonACAMDGPUmul_i24>;
foreach Type = ["I", "U"] in
foreach Index = 0-7 in {
// Defines patterns that extract each Index'ed 4bit from an unsigned
// 32bit scalar value;
def #Type#Index#"_4bit" : Extract<!shl(Index, 2), 15, !if (!eq (Type, "U"), 1, 0)>;
// Defines multiplication patterns where the multiplication is happening on each
// Index'ed 8bit of a 32bit scalar value.
def Mul#Type#Index#"_4bit" : PatFrag<
(ops node:$src0, node:$src1),
(!cast<HasOneUseBinOp>(!if (!eq (Type, "I"), NonACAMDGPUmul_i24_oneuse, NonACAMDGPUmul_u24_oneuse))
(!cast<Extract>(#Type#Index#"_4bit") node:$src0),
(!cast<Extract>(#Type#Index#"_4bit") node:$src1))>;
}
class UDot2Pat<Instruction Inst> : GCNPat <
(add (add_oneuse (AMDGPUmul_u24_oneuse (srl i32:$src0, (i32 16)),
(srl i32:$src1, (i32 16))), i32:$src2),
(AMDGPUmul_u24_oneuse (and i32:$src0, (i32 65535)),
(and i32:$src1, (i32 65535)))
),
(Inst (i32 8), $src0, (i32 8), $src1, (i32 8), $src2, (i1 0))
>;
class SDot2Pat<Instruction Inst> : GCNPat <
(add (add_oneuse (AMDGPUmul_i24_oneuse (sra i32:$src0, (i32 16)),
(sra i32:$src1, (i32 16))), i32:$src2),
(AMDGPUmul_i24_oneuse (sext_inreg i32:$src0, i16),
(sext_inreg i32:$src1, i16))),
(Inst (i32 8), $src0, (i32 8), $src1, (i32 8), $src2, (i1 0))
>;
let SubtargetPredicate = HasDotInsts in {
def V_DOT2_F32_F16 : VOP3PInst<"v_dot2_f32_f16", VOP3_Profile<VOP_F32_V2F16_V2F16_F32>>;
def V_DOT2_I32_I16 : VOP3PInst<"v_dot2_i32_i16", VOP3_Profile<VOP_I32_V2I16_V2I16_I32>>;
def V_DOT2_U32_U16 : VOP3PInst<"v_dot2_u32_u16", VOP3_Profile<VOP_I32_V2I16_V2I16_I32>>;
def V_DOT4_I32_I8 : VOP3PInst<"v_dot4_i32_i8", VOP3_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>>;
def V_DOT4_U32_U8 : VOP3PInst<"v_dot4_u32_u8", VOP3_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>>;
def V_DOT8_I32_I4 : VOP3PInst<"v_dot8_i32_i4", VOP3_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>>;
def V_DOT8_U32_U4 : VOP3PInst<"v_dot8_u32_u4", VOP3_Profile<VOP_I32_I32_I32_I32, VOP3_PACKED>>;
multiclass DotPats<SDPatternOperator dot_op,
VOP3PInst dot_inst> {
def : GCNPat <
(dot_op (dot_inst.Pfl.Src0VT (VOP3PMods0 dot_inst.Pfl.Src0VT:$src0, i32:$src0_modifiers)),
(dot_inst.Pfl.Src1VT (VOP3PMods dot_inst.Pfl.Src1VT:$src1, i32:$src1_modifiers)),
(dot_inst.Pfl.Src2VT (VOP3PMods dot_inst.Pfl.Src2VT:$src2, i32:$src2_modifiers)), i1:$clamp),
(dot_inst $src0_modifiers, $src0, $src1_modifiers, $src1, $src2_modifiers, $src2, (as_i1imm $clamp))>;
}
defm : DotPats<AMDGPUfdot2, V_DOT2_F32_F16>;
defm : DotPats<int_amdgcn_sdot2, V_DOT2_I32_I16>;
defm : DotPats<int_amdgcn_udot2, V_DOT2_U32_U16>;
defm : DotPats<int_amdgcn_sdot4, V_DOT4_I32_I8>;
defm : DotPats<int_amdgcn_udot4, V_DOT4_U32_U8>;
defm : DotPats<int_amdgcn_sdot8, V_DOT8_I32_I4>;
defm : DotPats<int_amdgcn_udot8, V_DOT8_U32_U4>;
def : UDot2Pat<V_DOT2_U32_U16>;
def : SDot2Pat<V_DOT2_I32_I16>;
foreach Type = ["U", "I"] in
def : GCNPat <
!cast<dag>(!foldl((i32 i32:$src2), [0, 1, 2, 3], lhs, y,
(add_oneuse lhs, (!cast<PatFrag>("Mul"#Type#"_Elt"#y) i32:$src0, i32:$src1)))),
(!cast<VOP3PInst>("V_DOT4_"#Type#"32_"#Type#8) (i32 8), $src0, (i32 8), $src1, (i32 8), $src2, (i1 0))>;
foreach Type = ["U", "I"] in
def : GCNPat <
!cast<dag>(!foldl((add_oneuse i32:$src2, (!cast<PatFrag>("Mul"#Type#"0_4bit") i32:$src0, i32:$src1)),
[1, 2, 3, 4, 5, 6, 7], lhs, y,
(NonACAdd_oneuse lhs, (!cast<PatFrag>("Mul"#Type#y#"_4bit") i32:$src0, i32:$src1)))),
(!cast<VOP3PInst>("V_DOT8_"#Type#"32_"#Type#4) (i32 8), $src0, (i32 8), $src1, (i32 8), $src2, (i1 0))>;
// Different variants of dot8 code-gen dag patterns are not generated through table-gen due to a huge increase
// in the compile time. Directly handle the pattern generated by the FE here.
foreach Type = ["U", "I"] in
def : GCNPat <
!cast<dag>(!foldl((add_oneuse i32:$src2, (!cast<PatFrag>("Mul"#Type#"0_4bit") i32:$src0, i32:$src1)),
[7, 1, 2, 3, 4, 5, 6], lhs, y,
(NonACAdd_oneuse lhs, (!cast<PatFrag>("Mul"#Type#y#"_4bit") i32:$src0, i32:$src1)))),
(!cast<VOP3PInst>("V_DOT8_"#Type#"32_"#Type#4) (i32 8), $src0, (i32 8), $src1, (i32 8), $src2, (i1 0))>;
} // End SubtargetPredicate = HasDotInsts
multiclass VOP3P_Real_vi<bits<10> op> {
def _vi : VOP3P_Real<!cast<VOP3_Pseudo>(NAME), SIEncodingFamily.VI>,
VOP3Pe <op, !cast<VOP3_Pseudo>(NAME).Pfl> {
let AssemblerPredicates = [HasVOP3PInsts];
let DecoderNamespace = "VI";
}
}
defm V_PK_MAD_I16 : VOP3P_Real_vi <0x380>;
defm V_PK_MUL_LO_U16 : VOP3P_Real_vi <0x381>;
defm V_PK_ADD_I16 : VOP3P_Real_vi <0x382>;
defm V_PK_SUB_I16 : VOP3P_Real_vi <0x383>;
defm V_PK_LSHLREV_B16 : VOP3P_Real_vi <0x384>;
defm V_PK_LSHRREV_B16 : VOP3P_Real_vi <0x385>;
defm V_PK_ASHRREV_I16 : VOP3P_Real_vi <0x386>;
defm V_PK_MAX_I16 : VOP3P_Real_vi <0x387>;
defm V_PK_MIN_I16 : VOP3P_Real_vi <0x388>;
defm V_PK_MAD_U16 : VOP3P_Real_vi <0x389>;
defm V_PK_ADD_U16 : VOP3P_Real_vi <0x38a>;
defm V_PK_SUB_U16 : VOP3P_Real_vi <0x38b>;
defm V_PK_MAX_U16 : VOP3P_Real_vi <0x38c>;
defm V_PK_MIN_U16 : VOP3P_Real_vi <0x38d>;
defm V_PK_FMA_F16 : VOP3P_Real_vi <0x38e>;
defm V_PK_ADD_F16 : VOP3P_Real_vi <0x38f>;
defm V_PK_MUL_F16 : VOP3P_Real_vi <0x390>;
defm V_PK_MIN_F16 : VOP3P_Real_vi <0x391>;
defm V_PK_MAX_F16 : VOP3P_Real_vi <0x392>;
let SubtargetPredicate = HasMadMixInsts in {
defm V_MAD_MIX_F32 : VOP3P_Real_vi <0x3a0>;
defm V_MAD_MIXLO_F16 : VOP3P_Real_vi <0x3a1>;
defm V_MAD_MIXHI_F16 : VOP3P_Real_vi <0x3a2>;
}
let SubtargetPredicate = HasFmaMixInsts in {
let DecoderNamespace = "GFX9_DL" in {
// The mad_mix instructions were renamed and their behaviors changed,
// but the opcode stayed the same so we need to put these in a
// different DecoderNamespace to avoid the ambiguity.
defm V_FMA_MIX_F32 : VOP3P_Real_vi <0x3a0>;
defm V_FMA_MIXLO_F16 : VOP3P_Real_vi <0x3a1>;
defm V_FMA_MIXHI_F16 : VOP3P_Real_vi <0x3a2>;
}
}
let SubtargetPredicate = HasDotInsts in {
defm V_DOT2_F32_F16 : VOP3P_Real_vi <0x3a3>;
defm V_DOT2_I32_I16 : VOP3P_Real_vi <0x3a6>;
defm V_DOT2_U32_U16 : VOP3P_Real_vi <0x3a7>;
defm V_DOT4_I32_I8 : VOP3P_Real_vi <0x3a8>;
defm V_DOT4_U32_U8 : VOP3P_Real_vi <0x3a9>;
defm V_DOT8_I32_I4 : VOP3P_Real_vi <0x3aa>;
defm V_DOT8_U32_U4 : VOP3P_Real_vi <0x3ab>;
} // End SubtargetPredicate = HasDotInsts
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