[SVE][AArch64] Adding patterns for while intrinsics

[mgudim]

Summary

This is a follow-up to https://reviews.llvm.org/D68476.

Straight-forward pattern matching for while intrinsics.

[mgudim]

This comment was removed by mgudim.

[amehsan]

LGTM. @sdesmalen @huntergr please let us know if you have any concern

[sdesmalen]

llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td

1435

These instructions should not be removed. (This is also guarded by the assembler/disassembler tests)

llvm/lib/Target/AArch64/SVEInstrFormats.td

3425

nit: Given that we chose to be explicit about adding the patterns (see https://reviews.llvm.org/D69128#1725072), it would be nice to do the same for these patterns.

[efriedma]

Any thoughts about exposing the NZCV flags?

[mgudim]

In D69059#1737941, @efriedma wrote:

Any thoughts about exposing the NZCV flags?

efriedma, sorry for the late reply. I see in .td files that the intrinsics define the NSCV flags, but I am not sure what you mean by "exposing" them. Could you please clarify?

[efriedma]

If you look at SVE loop examples from ARM, they generally have a branch using the flags set by something like a whilelt; we should allow the user to replicate that somehow. I was thinking you could make them part of the return value, somehow, so the intrinsic returns two values. Maybe the whole value, or maybe just a boolean for some common use we expect; haven't really thought that part through.

Maybe that's not a good idea, though? I guess we could let the user write a regular cmp, and have a pass detect that it's redundant, somehow. Or maybe there's some other similar approach I haven't considered.

[efriedma]

Hmm, I just dug up some examples using ACLE. It looks like the suggestion there is to use ptest on the result. The ptest can then be optimized away by the backend in common cases. I guess that works.

llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td

1438

Why are you using null_frag here?

Also, there aren't any tests for whilege/whilegt/whilehs/whilehi.

[mgudim]

Put null_frag in SVE2 while intrinsics.

[mgudim]

llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td

1438

I did not want to touch SVE2 intrinsics, I changed these lines accidentally, sorry about that. The null_frag is necessary for .td files to compile since I changed the definitions of the multiclasses.

[efriedma]

LGTM

llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td

1438

Oh, I missed that the ge/gt/hs/hi variants are only part of SVE2. I guess that's okay for now, then.

[c-rhodes]

@mgudim I've created a patch (D70909) also implementing these intrinsics but I was unaware of this patch, sorry about that. Can this be merged now? I can update D70909 to only add the SVE2 intrinsics .

[amehsan]

In D69059#1767016, @c-rhodes wrote:

@mgudim I've created a patch (D70909) also implementing these intrinsics but I was unaware of this patch, sorry about that. Can this be merged now? I can update D70909 to only add the SVE2 intrinsics .

@c-rhodes I will merge this patch tomorrow. Sorry for my long delay

[amehsan]

committed
https://reviews.llvm.org/rG61e54fd60c43

llvm/include/llvm/IR/IntrinsicsAArch64.td

let TargetPrefix = "aarch64" in {  // All intrinsics start with "llvm.aarch64.".
   : GCCBuiltin<"__builtin_sve_" # name>,
     Intrinsic<[OUT], [OUT, llvm_nxv16i1_ty, IN], [IntrNoMem]>;
 }
 
 //===----------------------------------------------------------------------===//
 // SVE
 
 let TargetPrefix = "aarch64" in {  // All intrinsics start with "llvm.aarch64.".
+  class AdvSIMD_SVE_WHILE_Intrinsic
+    : Intrinsic<[llvm_anyvector_ty],
+                [llvm_anyint_ty, LLVMMatchType<1>],
+                [IntrNoMem]>;
 
 //
 // Integer arithmetic
 //
 
 def int_aarch64_sve_abs : AdvSIMD_Merged1VectorArg_Intrinsic;
 def int_aarch64_sve_neg : AdvSIMD_Merged1VectorArg_Intrinsic;
 

 
 //
 // Floating-point comparisons
 //
 
 def int_aarch64_sve_fcvtzs_i32f16 : Builtin_SVCVT<"svcvt_s32_f16_m", llvm_nxv4i32_ty, llvm_nxv8f16_ty>;
 
 //
+// While comparisons
+//
+
+def int_aarch64_sve_whilele : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilelo : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilels : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilelt : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilege : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilegt : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilehs : AdvSIMD_SVE_WHILE_Intrinsic;
+def int_aarch64_sve_whilehi : AdvSIMD_SVE_WHILE_Intrinsic;
+
+//
 // Predicate operations
 //
 
 def int_aarch64_sve_punpkhi : AdvSIMD_SVE_PUNPKHI_Intrinsic;
 def int_aarch64_sve_punpklo : AdvSIMD_SVE_PUNPKHI_Intrinsic;
 }

llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td

let Predicates = [HasSVE] in {
 
   defm FCMGE_PPzZ0 : sve_fp_2op_p_pd<0b000, "fcmge">;
   defm FCMGT_PPzZ0 : sve_fp_2op_p_pd<0b001, "fcmgt">;
   defm FCMLT_PPzZ0 : sve_fp_2op_p_pd<0b010, "fcmlt">;
   defm FCMLE_PPzZ0 : sve_fp_2op_p_pd<0b011, "fcmle">;
   defm FCMEQ_PPzZ0 : sve_fp_2op_p_pd<0b100, "fcmeq">;
   defm FCMNE_PPzZ0 : sve_fp_2op_p_pd<0b110, "fcmne">;
 
-  defm WHILELT_PWW : sve_int_while4_rr<0b010, "whilelt">;
-  defm WHILELE_PWW : sve_int_while4_rr<0b011, "whilele">;
-  defm WHILELO_PWW : sve_int_while4_rr<0b110, "whilelo">;
-  defm WHILELS_PWW : sve_int_while4_rr<0b111, "whilels">;
-
-  defm WHILELT_PXX : sve_int_while8_rr<0b010, "whilelt">;
-  defm WHILELE_PXX : sve_int_while8_rr<0b011, "whilele">;
-  defm WHILELO_PXX : sve_int_while8_rr<0b110, "whilelo">;
-  defm WHILELS_PXX : sve_int_while8_rr<0b111, "whilels">;
+  defm WHILELT_PWW : sve_int_while4_rr<0b010, "whilelt", int_aarch64_sve_whilelt>;
+  defm WHILELE_PWW : sve_int_while4_rr<0b011, "whilele", int_aarch64_sve_whilele>;
+  defm WHILELO_PWW : sve_int_while4_rr<0b110, "whilelo", int_aarch64_sve_whilelo>;
+  defm WHILELS_PWW : sve_int_while4_rr<0b111, "whilels", int_aarch64_sve_whilels>;
+
+  defm WHILELT_PXX : sve_int_while8_rr<0b010, "whilelt", int_aarch64_sve_whilelt>;
+  defm WHILELE_PXX : sve_int_while8_rr<0b011, "whilele", int_aarch64_sve_whilele>;
+  defm WHILELO_PXX : sve_int_while8_rr<0b110, "whilelo", int_aarch64_sve_whilelo>;
+  defm WHILELS_PXX : sve_int_while8_rr<0b111, "whilels", int_aarch64_sve_whilels>;
 
   def CTERMEQ_WW : sve_int_cterm<0b0, 0b0, "ctermeq", GPR32>;
   def CTERMNE_WW : sve_int_cterm<0b0, 0b1, "ctermne", GPR32>;
   def CTERMEQ_XX : sve_int_cterm<0b1, 0b0, "ctermeq", GPR64>;
   def CTERMNE_XX : sve_int_cterm<0b1, 0b1, "ctermne", GPR64>;
 
   def RDVLI_XI  : sve_int_read_vl_a<0b0, 0b11111, "rdvl">;
   def ADDVL_XXI : sve_int_arith_vl<0b0, "addvl">;
let Predicates = [HasSVE2] in {
   defm STNT1W_ZZR_D : sve2_mem_sstnt_vs<0b100, "stnt1w", Z_d, ZPR64>;
   defm STNT1D_ZZR_D : sve2_mem_sstnt_vs<0b110, "stnt1d", Z_d, ZPR64>;
 
   // SVE2 table lookup (three sources)
   defm TBL_ZZZZ : sve2_int_perm_tbl<"tbl">;
   defm TBX_ZZZ  : sve2_int_perm_tbx<"tbx">;
 
   // SVE2 integer compare scalar count and limit
-  defm WHILEGE_PWW : sve_int_while4_rr<0b000, "whilege">;
-  defm WHILEGT_PWW : sve_int_while4_rr<0b001, "whilegt">;
-  defm WHILEHS_PWW : sve_int_while4_rr<0b100, "whilehs">;
-  defm WHILEHI_PWW : sve_int_while4_rr<0b101, "whilehi">;
-
-  defm WHILEGE_PXX : sve_int_while8_rr<0b000, "whilege">;
-  defm WHILEGT_PXX : sve_int_while8_rr<0b001, "whilegt">;
-  defm WHILEHS_PXX : sve_int_while8_rr<0b100, "whilehs">;
-  defm WHILEHI_PXX : sve_int_while8_rr<0b101, "whilehi">;
+  defm WHILEGE_PWW : sve_int_while4_rr<0b000, "whilege", int_aarch64_sve_whilege>;
+  defm WHILEGT_PWW : sve_int_while4_rr<0b001, "whilegt", int_aarch64_sve_whilegt>;
+  defm WHILEHS_PWW : sve_int_while4_rr<0b100, "whilehs", int_aarch64_sve_whilehs>;
+  defm WHILEHI_PWW : sve_int_while4_rr<0b101, "whilehi", int_aarch64_sve_whilehi>;
 
   // SVE2 pointer conflict compare
   defm WHILEWR_PXX : sve2_int_while_rr<0b0, "whilewr">;
   defm WHILERW_PXX : sve2_int_while_rr<0b1, "whilerw">;
 }
 
 let Predicates = [HasSVE2AES] in {
   // SVE2 crypto destructive binary operations
   def AESE_ZZZ_B : sve2_crypto_des_bin_op<0b00, "aese", ZPR8>;
   def AESD_ZZZ_B : sve2_crypto_des_bin_op<0b01, "aesd", ZPR8>;
 
   // SVE2 crypto unary operations
   def AESMC_ZZ_B  : sve2_crypto_unary_op<0b0, "aesmc">;

llvm/lib/Target/AArch64/SVEInstrFormats.td

: I<(outs), (ins rt:$Rn, rt:$Rm),
   let Inst{9-5}   = Rn;
   let Inst{4}     = opc;
   let Inst{3-0}   = 0b0000;
 
   let Defs = [NZCV];
 }
 
 class sve_int_while_rr<bits<2> sz8_64, bits<4> opc, string asm,
-                       RegisterClass gprty, PPRRegOp pprty>
+                       RegisterClass gprty, PPRRegOp pprty,
+                       ValueType vt, SDPatternOperator op>
 : I<(outs pprty:$Pd), (ins gprty:$Rn, gprty:$Rm),
   asm, "\t$Pd, $Rn, $Rm",
-  "", []>, Sched<[]> {
+  "",
+  [(set (vt pprty:$Pd), (op gprty:$Rn, gprty:$Rm))]>, Sched<[]> {
   bits<4> Pd;
   bits<5> Rm;
   bits<5> Rn;
   let Inst{31-24} = 0b00100101;
   let Inst{23-22} = sz8_64;
   let Inst{21}    = 0b1;
   let Inst{20-16} = Rm;
   let Inst{15-13} = 0b000;
   let Inst{12-10} = opc{3-1};
   let Inst{9-5}   = Rn;
   let Inst{4}     = opc{0};
   let Inst{3-0}   = Pd;
 
   let Defs = [NZCV];
 }
 
-multiclass sve_int_while4_rr<bits<3> opc, string asm> {
-  def _B : sve_int_while_rr<0b00, { 0, opc }, asm, GPR32, PPR8>;
-  def _H : sve_int_while_rr<0b01, { 0, opc }, asm, GPR32, PPR16>;
-  def _S : sve_int_while_rr<0b10, { 0, opc }, asm, GPR32, PPR32>;
-  def _D : sve_int_while_rr<0b11, { 0, opc }, asm, GPR32, PPR64>;
+multiclass sve_int_while4_rr<bits<3> opc, string asm, SDPatternOperator op> {
+  def _B : sve_int_while_rr<0b00, { 0, opc }, asm, GPR32, PPR8, nxv16i1, op>;
+  def _H : sve_int_while_rr<0b01, { 0, opc }, asm, GPR32, PPR16, nxv8i1, op>;
+  def _S : sve_int_while_rr<0b10, { 0, opc }, asm, GPR32, PPR32, nxv4i1, op>;
+  def _D : sve_int_while_rr<0b11, { 0, opc }, asm, GPR32, PPR64, nxv2i1, op>;
 }
 
-multiclass sve_int_while8_rr<bits<3> opc, string asm> {
-  def _B : sve_int_while_rr<0b00, { 1, opc }, asm, GPR64, PPR8>;
-  def _H : sve_int_while_rr<0b01, { 1, opc }, asm, GPR64, PPR16>;
-  def _S : sve_int_while_rr<0b10, { 1, opc }, asm, GPR64, PPR32>;
-  def _D : sve_int_while_rr<0b11, { 1, opc }, asm, GPR64, PPR64>;
+multiclass sve_int_while8_rr<bits<3> opc, string asm, SDPatternOperator op> {
+  def _B : sve_int_while_rr<0b00, { 1, opc }, asm, GPR64, PPR8, nxv16i1, op>;
+  def _H : sve_int_while_rr<0b01, { 1, opc }, asm, GPR64, PPR16, nxv8i1, op>;
+  def _S : sve_int_while_rr<0b10, { 1, opc }, asm, GPR64, PPR32, nxv4i1, op>;
+  def _D : sve_int_while_rr<0b11, { 1, opc }, asm, GPR64, PPR64, nxv2i1, op>;
 }
 
 class sve2_int_while_rr<bits<2> sz8_64, bits<1> rw, string asm,
                         PPRRegOp pprty>
 : I<(outs pprty:$Pd), (ins GPR64:$Rn, GPR64:$Rm),
   asm, "\t$Pd, $Rn, $Rm",
   "", []>, Sched<[]> {
   bits<4> Pd;

llvm/test/CodeGen/AArch64/sve-intrinsics-while.ll

+; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve < %s | FileCheck %s
+
+;
+; WHILELE
+;
+
+define <vscale x 16 x i1> @whilele_b_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilele_b_ww:
+; CHECK: whilele p0.b, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilele.nxv16i1.i32(i32 %a, i32 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 16 x i1> @whilele_b_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilele_b_xx:
+; CHECK: whilele p0.b, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilele.nxv16i1.i64(i64 %a, i64 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilele_h_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilele_h_ww:
+; CHECK: whilele p0.h, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilele.nxv8i1.i32(i32 %a, i32 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilele_h_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilele_h_xx:
+; CHECK: whilele p0.h, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilele.nxv8i1.i64(i64 %a, i64 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilele_s_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilele_s_ww:
+; CHECK: whilele p0.s, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilele.nxv4i1.i32(i32 %a, i32 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilele_s_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilele_s_xx:
+; CHECK: whilele p0.s, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilele.nxv4i1.i64(i64 %a, i64 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilele_d_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilele_d_ww:
+; CHECK: whilele p0.d, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilele.nxv2i1.i32(i32 %a, i32 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilele_d_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilele_d_xx:
+; CHECK: whilele p0.d, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilele.nxv2i1.i64(i64 %a, i64 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+;
+; WHILELO
+;
+
+define <vscale x 16 x i1> @whilelo_b_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelo_b_ww:
+; CHECK: whilelo p0.b, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilelo.nxv16i1.i32(i32 %a, i32 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 16 x i1> @whilelo_b_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelo_b_xx:
+; CHECK: whilelo p0.b, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilelo.nxv16i1.i64(i64 %a, i64 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilelo_h_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelo_h_ww:
+; CHECK: whilelo p0.h, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilelo.nxv8i1.i32(i32 %a, i32 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilelo_h_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelo_h_xx:
+; CHECK: whilelo p0.h, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilelo.nxv8i1.i64(i64 %a, i64 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilelo_s_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelo_s_ww:
+; CHECK: whilelo p0.s, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilelo.nxv4i1.i32(i32 %a, i32 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilelo_s_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelo_s_xx:
+; CHECK: whilelo p0.s, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilelo.nxv4i1.i64(i64 %a, i64 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilelo_d_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelo_d_ww:
+; CHECK: whilelo p0.d, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilelo.nxv2i1.i32(i32 %a, i32 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilelo_d_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelo_d_xx:
+; CHECK: whilelo p0.d, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilelo.nxv2i1.i64(i64 %a, i64 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+;
+; WHILELS
+;
+
+define <vscale x 16 x i1> @whilels_b_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilels_b_ww:
+; CHECK: whilels p0.b, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilels.nxv16i1.i32(i32 %a, i32 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 16 x i1> @whilels_b_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilels_b_xx:
+; CHECK: whilels p0.b, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilels.nxv16i1.i64(i64 %a, i64 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilels_h_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilels_h_ww:
+; CHECK: whilels p0.h, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilels.nxv8i1.i32(i32 %a, i32 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilels_h_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilels_h_xx:
+; CHECK: whilels p0.h, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilels.nxv8i1.i64(i64 %a, i64 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilels_s_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilels_s_ww:
+; CHECK: whilels p0.s, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilels.nxv4i1.i32(i32 %a, i32 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilels_s_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilels_s_xx:
+; CHECK: whilels p0.s, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilels.nxv4i1.i64(i64 %a, i64 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilels_d_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilels_d_ww:
+; CHECK: whilels p0.d, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilels.nxv2i1.i32(i32 %a, i32 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilels_d_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilels_d_xx:
+; CHECK: whilels p0.d, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilels.nxv2i1.i64(i64 %a, i64 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+;
+; WHILELT
+;
+
+define <vscale x 16 x i1> @whilelt_b_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelt_b_ww:
+; CHECK: whilelt p0.b, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilelt.nxv16i1.i32(i32 %a, i32 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 16 x i1> @whilelt_b_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelt_b_xx:
+; CHECK: whilelt p0.b, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 16 x i1> @llvm.aarch64.sve.whilelt.nxv16i1.i64(i64 %a, i64 %b)
+  ret <vscale x 16 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilelt_h_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelt_h_ww:
+; CHECK: whilelt p0.h, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilelt.nxv8i1.i32(i32 %a, i32 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 8 x i1> @whilelt_h_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelt_h_xx:
+; CHECK: whilelt p0.h, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 8 x i1> @llvm.aarch64.sve.whilelt.nxv8i1.i64(i64 %a, i64 %b)
+  ret <vscale x 8 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilelt_s_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelt_s_ww:
+; CHECK: whilelt p0.s, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilelt.nxv4i1.i32(i32 %a, i32 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 4 x i1> @whilelt_s_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelt_s_xx:
+; CHECK: whilelt p0.s, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 4 x i1> @llvm.aarch64.sve.whilelt.nxv4i1.i64(i64 %a, i64 %b)
+  ret <vscale x 4 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilelt_d_ww(i32 %a, i32 %b) {
+; CHECK-LABEL: whilelt_d_ww:
+; CHECK: whilelt p0.d, w0, w1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilelt.nxv2i1.i32(i32 %a, i32 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+define <vscale x 2 x i1> @whilelt_d_xx(i64 %a, i64 %b) {
+; CHECK-LABEL: whilelt_d_xx:
+; CHECK: whilelt p0.d, x0, x1
+; CHECK-NEXT: ret
+  %out = call <vscale x 2 x i1> @llvm.aarch64.sve.whilelt.nxv2i1.i64(i64 %a, i64 %b)
+  ret <vscale x 2 x i1> %out
+}
+
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilele.nxv16i1.i32(i32, i32)
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilele.nxv16i1.i64(i64, i64)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilele.nxv8i1.i32(i32, i32)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilele.nxv8i1.i64(i64, i64)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilele.nxv4i1.i32(i32, i32)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilele.nxv4i1.i64(i64, i64)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilele.nxv2i1.i32(i32, i32)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilele.nxv2i1.i64(i64, i64)
+
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilelo.nxv16i1.i32(i32, i32)
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilelo.nxv16i1.i64(i64, i64)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilelo.nxv8i1.i32(i32, i32)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilelo.nxv8i1.i64(i64, i64)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilelo.nxv4i1.i32(i32, i32)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilelo.nxv4i1.i64(i64, i64)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilelo.nxv2i1.i32(i32, i32)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilelo.nxv2i1.i64(i64, i64)
+
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilels.nxv16i1.i32(i32, i32)
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilels.nxv16i1.i64(i64, i64)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilels.nxv8i1.i32(i32, i32)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilels.nxv8i1.i64(i64, i64)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilels.nxv4i1.i32(i32, i32)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilels.nxv4i1.i64(i64, i64)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilels.nxv2i1.i32(i32, i32)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilels.nxv2i1.i64(i64, i64)
+
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilelt.nxv16i1.i32(i32, i32)
+declare <vscale x 16 x i1> @llvm.aarch64.sve.whilelt.nxv16i1.i64(i64, i64)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilelt.nxv8i1.i32(i32, i32)
+declare <vscale x 8 x i1> @llvm.aarch64.sve.whilelt.nxv8i1.i64(i64, i64)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilelt.nxv4i1.i32(i32, i32)
+declare <vscale x 4 x i1> @llvm.aarch64.sve.whilelt.nxv4i1.i64(i64, i64)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilelt.nxv2i1.i32(i32, i32)
+declare <vscale x 2 x i1> @llvm.aarch64.sve.whilelt.nxv2i1.i64(i64, i64)