================
@@ -10753,10 +10758,45 @@ class sve2_fp8_down_cvt_single<bits<2> opc, string
mnemonic,
let Inst{5} = 0b0;
let Inst{4-0} = Zd;
let Uses = [FPMR, FPCR];
+
+ let mayLoad = 1;
+ let mayStore = 0;
}
-multiclass sve2_fp8_down_cvt_single<bits<2> opc, string mnemonic,
RegisterOperand src> {
+multiclass sve2_fp8_down_cvt_single<bits<2> opc, string mnemonic,
RegisterOperand src,
+ ValueType ty, SDPatternOperator op> {
def NAME : sve2_fp8_down_cvt_single<opc, mnemonic, ZPR8, src>;
+
+ def : Pat<(nxv16i8 (op ty:$Zn1, ty:$Zn2)),
+ (!cast<Instruction>(NAME) (REG_SEQUENCE ZPR2Mul2, $Zn1, zsub0,
$Zn2, zsub1))>;
+}
+
+class sve2_fp8_down_cvt_single_top<bits<2> opc, string mnemonic,
RegisterOperand src_ty>
----------------
momchil-velikov wrote:
It's not like the encodings are going to change so we are worried about extra
maintenance burden due to duplication.
https://github.com/llvm/llvm-project/pull/118124
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