[clang] [llvm] [AArch64] Add intrinsics for 16-bit non-widening FMLA/FMLS (PR #88553)

[Hassnaa Hamdi via llvm-commits]

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@@ -458,6 +458,40 @@ let TargetGuard = "sme2,sme-f64f64" in {
   def SVMLS_LANE_VG1x4_F64 : Inst<"svmls_lane_za64[_{d}]_vg1x4", "vm4di", "d", MergeNone, "aarch64_sme_fmls_lane_vg1x4", [IsStreaming, IsInOutZA], [ImmCheck<3, ImmCheck0_1>]>;
 }
 
+let TargetGuard = "sme2p1,sme-f16f16" in {
+  def SVMLA_MULTI_VG1x2_F16 : Inst<"svmla_za16[_f16]_vg1x2", "vm22", "h", MergeNone, "aarch64_sme_fmla_vg1x2", [IsStreaming, IsInOutZA], []>;
+  def SVMLA_MULTI_VG1x4_F16 : Inst<"svmla_za16[_f16]_vg1x4", "vm44", "h", MergeNone, "aarch64_sme_fmla_vg1x4", [IsStreaming, IsInOutZA], []>;
+  def SVMLS_MULTI_VG1x2_F16 : Inst<"svmls_za16[_f16]_vg1x2", "vm22", "h", MergeNone, "aarch64_sme_fmls_vg1x2", [IsStreaming, IsInOutZA], []>;
+  def SVMLS_MULTI_VG1x4_F16 : Inst<"svmls_za16[_f16]_vg1x4", "vm44", "h", MergeNone, "aarch64_sme_fmls_vg1x4", [IsStreaming, IsInOutZA], []>;
+
+  def SVMLA_SINGLE_VG1x2_F16 : Inst<"svmla[_single]_za16[_f16]_vg1x2", "vm2d", "h", MergeNone, "aarch64_sme_fmla_single_vg1x2", [IsStreaming, IsInOutZA], []>;
+  def SVMLA_SINGLE_VG1x4_F16 : Inst<"svmla[_single]_za16[_f16]_vg1x4", "vm4d", "h", MergeNone, "aarch64_sme_fmla_single_vg1x4", [IsStreaming, IsInOutZA], []>;
+  def SVMLS_SINGLE_VG1x2_F16 : Inst<"svmls[_single]_za16[_f16]_vg1x2", "vm2d", "h", MergeNone, "aarch64_sme_fmls_single_vg1x2", [IsStreaming, IsInOutZA], []>;
+  def SVMLS_SINGLE_VG1x4_F16 : Inst<"svmls[_single]_za16[_f16]_vg1x4", "vm4d", "h", MergeNone, "aarch64_sme_fmls_single_vg1x4", [IsStreaming, IsInOutZA], []>;
+
+  def SVMLA_LANE_VG1x2_F16 : Inst<"svmla_lane_za16[_f16]_vg1x2", "vm2di", "h", MergeNone, "aarch64_sme_fmla_lane_vg1x2", [IsStreaming, IsInOutZA], [ImmCheck<3, ImmCheck0_7>]>;
+  def SVMLA_LANE_VG1x4_F16 : Inst<"svmla_lane_za16[_f16]_vg1x4", "vm4di", "h", MergeNone, "aarch64_sme_fmla_lane_vg1x4", [IsStreaming, IsInOutZA], [ImmCheck<3, ImmCheck0_7>]>;
+  def SVMLS_LANE_VG1x2_F16 : Inst<"svmls_lane_za16[_f16]_vg1x2", "vm2di", "h", MergeNone, "aarch64_sme_fmls_lane_vg1x2", [IsStreaming, IsInOutZA], [ImmCheck<3, ImmCheck0_7>]>;
+  def SVMLS_LANE_VG1x4_F16 : Inst<"svmls_lane_za16[_f16]_vg1x4", "vm4di", "h", MergeNone, "aarch64_sme_fmls_lane_vg1x4", [IsStreaming, IsInOutZA], [ImmCheck<3, ImmCheck0_7>]>;
+}
+
+let TargetGuard = "sme2,b16b16" in {
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hassnaaHamdi wrote:

Hi,
According to this sentence in the acle specs:
`__ARM_FEATURE_SME_B16B16 is defined to 1 if there is hardware support for the SME2.1 FEAT_B16B16 instructions and if their associated SME intrinsics are available.`
I understand that the target guard should be "sme2p1, b16b16", correct ?
If that is not correct, could you please mention where is it specified that we should use sme2 not sme2p1 ?

https://github.com/llvm/llvm-project/pull/88553