================
@@ -219,6 +219,37 @@ class SME2_Tile_Movaz_Pat<string name, SDPatternOperator
intrinsic, ValueType ou
: Pat<(out_vt (intrinsic tile_imm:$tile, (i32 (tileslice
MatrixIndexGPR32Op12_15:$base, index_ty:$offset)))),
(!cast<Instruction>(name # _PSEUDO) $tile, $base, $offset)>;
+
+// FP8 SME FDOT instructions
+
+// Selection DAG patterns - map to first level of pseudo-instructions
(xxx_PSEUDO)
+class SME2_FP8_FMLA_FDOT_Index_VG1x2_Pat<string name, SDPatternOperator
intrinsic,
+ ComplexPattern tileslice, Operand
offset_ty, Operand imm_ty,
+ ValueType vt = nxv16i8>
+ : Pat<(intrinsic (i32 (tileslice MatrixIndexGPR32Op8_11:$base,
offset_ty:$offset)),
+ vt:$Zn1, vt:$Zn2, vt:$Zm, (i32 imm_ty:$i)),
+ (!cast<Instruction>(name # _PSEUDO) $base, $offset,
+ (REG_SEQUENCE ZPR2Mul2, vt:$Zn1,
zsub0, vt:$Zn2, zsub1),
+ ZPR4b8:$Zm, imm_ty:$i)>;
+
+class SME2_FP8_FMLA_FDOT_Index_VG1x4_Pat<string name, SDPatternOperator
intrinsic,
+ ComplexPattern tileslice, Operand
offset_ty, Operand imm_ty,
+ ValueType vt = nxv16i8>
+ : Pat<(intrinsic (i32 (tileslice MatrixIndexGPR32Op8_11:$base,
offset_ty:$offset)),
+ vt:$Zn1, vt:$Zn2, vt:$Zn3, vt:$Zn4,
+ vt:$Zm, (i32 imm_ty:$i)),
+ (!cast<Instruction>(name # _PSEUDO) $base, $offset,
+ (REG_SEQUENCE ZPR4Mul4, vt:$Zn1,
zsub0, vt:$Zn2, zsub1, vt:$Zn3, zsub2, vt:$Zn4, zsub3),
+ ZPR4b8:$Zm, imm_ty:$i)>;
----------------
SpencerAbson wrote:
I'm not sure we need to introduce new pattern classes here, we can use the
existing `SME2_ZA_TwoOp_VG{2,4}_Multi_Index_Pat`
For example,
`def : SME2_ZA_TwoOp_VG2_Multi_Index_Pat<NAME, intrinsic, sme_elm_idx0_7,
ZPR4b8, nxv16i8, VectorIndexH32b_timm, tileslice16>;`
https://github.com/llvm/llvm-project/pull/118492
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