File: sve2-histcnt.ll

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
; RUN: llc -mtriple=aarch64 -verify-machineinstrs < %s -o - | FileCheck %s

define void @histogram_i64(<vscale x 2 x ptr> %buckets, i64 %inc, <vscale x 2 x i1> %mask) #0 {
; CHECK-LABEL: histogram_i64:
; CHECK:       // %bb.0:
; CHECK-NEXT:    histcnt z1.d, p0/z, z0.d, z0.d
; CHECK-NEXT:    mov z3.d, x0
; CHECK-NEXT:    ld1d { z2.d }, p0/z, [z0.d]
; CHECK-NEXT:    ptrue p1.d
; CHECK-NEXT:    mad z1.d, p1/m, z3.d, z2.d
; CHECK-NEXT:    st1d { z1.d }, p0, [z0.d]
; CHECK-NEXT:    ret
  call void @llvm.experimental.vector.histogram.add.nxv2p0.i64(<vscale x 2 x ptr> %buckets, i64 %inc, <vscale x 2 x i1> %mask)
  ret void
}

;; FIXME: We maybe need some dagcombines here? We're multiplying the output of the histcnt
;;        by 1, so we should be able to remove that and directly add the histcnt to the
;;        current bucket data.
define void @histogram_i32_literal(ptr %base, <vscale x 4 x i32> %indices, <vscale x 4 x i1> %mask) #0 {
; CHECK-LABEL: histogram_i32_literal:
; CHECK:       // %bb.0:
; CHECK-NEXT:    histcnt z1.s, p0/z, z0.s, z0.s
; CHECK-NEXT:    mov z3.s, #1 // =0x1
; CHECK-NEXT:    ld1w { z2.s }, p0/z, [x0, z0.s, sxtw #2]
; CHECK-NEXT:    ptrue p1.s
; CHECK-NEXT:    mad z1.s, p1/m, z3.s, z2.s
; CHECK-NEXT:    st1w { z1.s }, p0, [x0, z0.s, sxtw #2]
; CHECK-NEXT:    ret

  %buckets = getelementptr i32, ptr %base, <vscale x 4 x i32> %indices
  call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> %buckets, i32 1, <vscale x 4 x i1> %mask)
  ret void
}

define void @histogram_i32_literal_noscale(ptr %base, <vscale x 4 x i32> %indices, <vscale x 4 x i1> %mask) #0 {
; CHECK-LABEL: histogram_i32_literal_noscale:
; CHECK:       // %bb.0:
; CHECK-NEXT:    histcnt z1.s, p0/z, z0.s, z0.s
; CHECK-NEXT:    mov z3.s, #1 // =0x1
; CHECK-NEXT:    ld1w { z2.s }, p0/z, [x0, z0.s, sxtw]
; CHECK-NEXT:    ptrue p1.s
; CHECK-NEXT:    mad z1.s, p1/m, z3.s, z2.s
; CHECK-NEXT:    st1w { z1.s }, p0, [x0, z0.s, sxtw]
; CHECK-NEXT:    ret

  %buckets = getelementptr i8, ptr %base, <vscale x 4 x i32> %indices
  call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> %buckets, i32 1, <vscale x 4 x i1> %mask)
  ret void
}

attributes #0 = { "target-features"="+sve2" vscale_range(1, 16) }