[llvm] [AArch64][SVE] Add more MOVPRFX pseudos for SVE immediate instructions. (PR #192491)

[Ricardo Jesus via llvm-commits]

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@@ -5400,10 +5412,15 @@ multiclass sve_int_arith_imm2<string asm, SDPatternOperator op> {
   def _S : sve_int_arith_imm<0b10, 0b110000, asm, ZPR32, simm8_32b>;
   def _D : sve_int_arith_imm<0b11, 0b110000, asm, ZPR64, simm8_32b>;
 
-  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv16i8, nxv16i1, op, ZPR8, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _B)>;
-  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv8i16, nxv8i1, op, ZPR16, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _H)>;
-  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv4i32, nxv4i1, op, ZPR32, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _S)>;
-  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv2i64, nxv2i1, op, ZPR64, i64, SVEArithSImmPat64, !cast<Instruction>(NAME # _D)>;
+  def _B_PSEUDO : UnpredTwoOpImmPseudo<NAME # _B, ZPR8,  simm8_32b>;
+  def _H_PSEUDO : UnpredTwoOpImmPseudo<NAME # _H, ZPR16, simm8_32b>;
+  def _S_PSEUDO : UnpredTwoOpImmPseudo<NAME # _S, ZPR32, simm8_32b>;
+  def _D_PSEUDO : UnpredTwoOpImmPseudo<NAME # _D, ZPR64, simm8_32b>;
+
+  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv16i8, nxv16i1, op, ZPR8, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _B_PSEUDO)>;
+  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv8i16, nxv8i1, op, ZPR16, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _H_PSEUDO)>;
+  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv4i32, nxv4i1, op, ZPR32, i32, SVEArithSImmPat32, !cast<Instruction>(NAME # _S_PSEUDO)>;
+  def : SVE_1_Op_Imm_Arith_Any_Predicate<nxv2i64, nxv2i1, op, ZPR64, i64, SVEArithSImmPat64, !cast<Instruction>(NAME # _D_PSEUDO)>;
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rj-jesus wrote:

Thanks for spotting this! I had seen mixed usage of Instruction/Pseudo, but thought the latter was preferred to highlight that the instruction cast was a pseudo (when the name isn't obvious).

I've updated the changes in this PR to prefer `cast<Instruction>`. Please let me know if you'd like me to update any of the other instances of `cast<Pseudo>` here as well.

https://github.com/llvm/llvm-project/pull/192491