llvm/test/CodeGen/AArch64/consecutive-stores-of-faddv.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc  -mtriple=aarch64-linux-gnu -mattr=+sve,+sme -O3 < %s -o - | FileCheck %s --check-prefixes=CHECK

; Tests consecutive stores of @llvm.aarch64.sve.faddv. Within SDAG faddv is
; lowered as a FADDV + EXTRACT_VECTOR_ELT (of lane 0). Stores of extracts can
; be matched by DAGCombiner::mergeConsecutiveStores(), which we want to avoid in
; some cases as it can lead to worse codegen.

; TODO: A single `stp s0, s1, [x0]` may be preferred here.
define void @consecutive_stores_pair(ptr %dest0, <vscale x 4 x float> %vec0, <vscale x 4 x float> %vec1) {
; CHECK-LABEL: consecutive_stores_pair:
; CHECK:       // %bb.0:
; CHECK-NEXT:    ptrue p0.s
; CHECK-NEXT:    faddv s0, p0, z0.s
; CHECK-NEXT:    faddv s1, p0, z1.s
; CHECK-NEXT:    mov v0.s[1], v1.s[0]
; CHECK-NEXT:    str d0, [x0]
; CHECK-NEXT:    ret
  %dest1 = getelementptr inbounds i8, ptr %dest0, i64 4
  %reduce0 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec0)
  %reduce1 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec1)
  store float %reduce0, ptr %dest0, align 4
  store float %reduce1, ptr %dest1, align 4
  ret void
}

define void @consecutive_stores_quadruple(ptr %dest0, <vscale x 4 x float> %vec0, <vscale x 4 x float> %vec1, <vscale x 4 x float> %vec2, <vscale x 4 x float> %vec3) {
; CHECK-LABEL: consecutive_stores_quadruple:
; CHECK:       // %bb.0:
; CHECK-NEXT:    ptrue p0.s
; CHECK-NEXT:    faddv s0, p0, z0.s
; CHECK-NEXT:    faddv s1, p0, z1.s
; CHECK-NEXT:    faddv s2, p0, z2.s
; CHECK-NEXT:    mov v0.s[1], v1.s[0]
; CHECK-NEXT:    faddv s3, p0, z3.s
; CHECK-NEXT:    mov v2.s[1], v3.s[0]
; CHECK-NEXT:    stp d0, d2, [x0]
; CHECK-NEXT:    ret
  %dest1 = getelementptr inbounds i8, ptr %dest0, i64 4
  %dest2 = getelementptr inbounds i8, ptr %dest1, i64 4
  %dest3 = getelementptr inbounds i8, ptr %dest2, i64 4
  %reduce0 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec0)
  %reduce1 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec1)
  %reduce2 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec2)
  %reduce3 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec3)
  store float %reduce0, ptr %dest0, align 4
  store float %reduce1, ptr %dest1, align 4
  store float %reduce2, ptr %dest2, align 4
  store float %reduce3, ptr %dest3, align 4
  ret void
}

define void @consecutive_stores_pair_streaming_function(ptr %dest0, <vscale x 4 x float> %vec0, <vscale x 4 x float> %vec1) "aarch64_pstate_sm_enabled"  {
; CHECK-LABEL: consecutive_stores_pair_streaming_function:
; CHECK:       // %bb.0:
; CHECK-NEXT:    ptrue p0.s
; CHECK-NEXT:    faddv s0, p0, z0.s
; CHECK-NEXT:    faddv s1, p0, z1.s
; CHECK-NEXT:    stp s0, s1, [x0]
; CHECK-NEXT:    ret
  %dest1 = getelementptr inbounds i8, ptr %dest0, i64 4
  %reduce0 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec0)
  %reduce1 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec1)
  store float %reduce0, ptr %dest0, align 4
  store float %reduce1, ptr %dest1, align 4
  ret void
}

define void @consecutive_stores_quadruple_streaming_function(ptr %dest0, <vscale x 4 x float> %vec0, <vscale x 4 x float> %vec1, <vscale x 4 x float> %vec2, <vscale x 4 x float> %vec3) "aarch64_pstate_sm_enabled" {
; CHECK-LABEL: consecutive_stores_quadruple_streaming_function:
; CHECK:       // %bb.0:
; CHECK-NEXT:    ptrue p0.s
; CHECK-NEXT:    faddv s0, p0, z0.s
; CHECK-NEXT:    faddv s1, p0, z1.s
; CHECK-NEXT:    faddv s2, p0, z2.s
; CHECK-NEXT:    stp s0, s1, [x0]
; CHECK-NEXT:    faddv s3, p0, z3.s
; CHECK-NEXT:    stp s2, s3, [x0, #8]
; CHECK-NEXT:    ret
  %dest1 = getelementptr inbounds i8, ptr %dest0, i64 4
  %dest2 = getelementptr inbounds i8, ptr %dest1, i64 4
  %dest3 = getelementptr inbounds i8, ptr %dest2, i64 4
  %reduce0 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec0)
  %reduce1 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec1)
  %reduce2 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec2)
  %reduce3 = call float @llvm.aarch64.sve.faddv.nxv4f32(<vscale x 4 x i1> splat(i1 true), <vscale x 4 x float> %vec3)
  store float %reduce0, ptr %dest0, align 4
  store float %reduce1, ptr %dest1, align 4
  store float %reduce2, ptr %dest2, align 4
  store float %reduce3, ptr %dest3, align 4
  ret void
}