[llvm] [AARCH64] Add assembly/disassembly for FMMLA instructions (PR #113313)

[via llvm-commits]

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@@ -3449,11 +3449,15 @@ let Predicates = [HasSVEorSME, HasMatMulInt8] in {
 } // End HasSVEorSME, HasMatMulInt8
 
 let Predicates = [HasSVE, HasMatMulFP32] in {
-  defm FMMLA_ZZZ_S : sve_fp_matrix_mla<0, "fmmla", ZPR32, int_aarch64_sve_fmmla, nxv4f32>;
+  defm FMMLA_ZZZ_S : sve_fp_matrix_mla<0b10, "fmmla", ZPR32, ZPR32, int_aarch64_sve_fmmla, nxv4f32, nxv4f32>;
 } // End HasSVE, HasMatMulFP32
 
+let Predicates = [HasSVE_F16F32MM] in {
+  def FMLLA_ZZZ_SH : sve_fp_matrix_mla<0b00, "fmmla", ZPR32, ZPR16>;
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SpencerAbson wrote:

```suggestion
  def FMLLA_ZZZ_HtoS : sve_fp_matrix_mla<0b00, "fmmla", ZPR32, ZPR16>;
```

https://github.com/llvm/llvm-project/pull/113313