splats-with-mixed-vl.ll | Explore in Territory

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -O3 -mtriple=riscv64 -mattr=+v < %s | FileCheck %s

define void @constant_splat_fixed(ptr %p) {
; CHECK-LABEL: constant_splat_fixed:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  store <4 x i32> zeroinitializer, ptr %p
  ret void
}

define void @constant_splat_scalable(ptr %p) {
; CHECK-LABEL: constant_splat_scalable:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a1, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  store <vscale x 1 x i32> zeroinitializer, ptr %p
  ret void
}

; FIXME: We should be able to use the earlier splat of zero here
; since VLMAX >= 4.
define void @constant_splat_scalable_then_fixed(ptr %p, ptr %p2) {
; CHECK-LABEL: constant_splat_scalable_then_fixed:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a2, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    ret
  store <vscale x 1 x i32> zeroinitializer, ptr %p
  store <4 x i32> zeroinitializer, ptr %p2
  ret void
}

; We could widen the first splat to VLMAX, but this might not
; be generally profitable.
define void @constant_splat_fixed_then_scalable(ptr %p, ptr %p2) {
; CHECK-LABEL: constant_splat_fixed_then_scalable:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    vsetvli a1, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  store <4 x i32> zeroinitializer, ptr %p2
  store <vscale x 1 x i32> zeroinitializer, ptr %p
  ret void
}

define void @splat_scalable(ptr %p, i32 %v) {
; CHECK-LABEL: splat_scalable:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a2, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a1
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer
  store <vscale x 1 x i32> %splat, ptr %p
  ret void
}

define void @splat_fixed(ptr %p, i32 %v) {
; CHECK-LABEL: splat_fixed:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a1
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <4 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <4 x i32> %elt.head, <4 x i32> poison, <4 x i32> zeroinitializer
  store <4 x i32> %splat, ptr %p
  ret void
}

; FIXME: We should reschedule the first splat to reduce the need
; for toggling VL
define void @mixed_splats1(ptr %p, i32 %v) {
; CHECK-LABEL: mixed_splats1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a2, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a1
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.i v9, 0
; CHECK-NEXT:    vse32.v v9, (a0)
; CHECK-NEXT:    vsetvli a1, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  store <4 x i32> zeroinitializer, ptr %p
  store <vscale x 1 x i32> %splat, ptr %p
  ret void
}

define void @mixed_splats2(ptr %p, i32 %v) {
; CHECK-LABEL: mixed_splats2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a2, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a1
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.i v8, 0
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  store <vscale x 1 x i32> %splat, ptr %p
  store <4 x i32> zeroinitializer, ptr %p
  ret void
}

define void @extract_vector(ptr %p, i32 %v) {
; CHECK-LABEL: extract_vector:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a1
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)
  store <4 x i32> %fv, ptr %p
  ret void
}

define void @extract_vector_multiuse1(ptr %p, ptr %p2, i32 %v) {
; CHECK-LABEL: extract_vector_multiuse1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a2
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)
  store <4 x i32> %fv, ptr %p
  store <4 x i32> %fv, ptr %p2
  ret void
}

define <vscale x 1 x i32> @extract_vector_multiuse2(ptr %p, ptr %p2, i32 %v) {
; CHECK-LABEL: extract_vector_multiuse2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a1, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a2
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)
  store <4 x i32> %fv, ptr %p
  ret <vscale x 1 x i32> %splat
}

define void @extract_vector_mixed1(ptr %p, ptr %p2, i32 %v) {
; CHECK-LABEL: extract_vector_mixed1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a3, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a2
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vsetvli a0, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer

  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)

  store <4 x i32> %fv, ptr %p
  store <vscale x 1 x i32> %splat, ptr %p2
  ret void
}

define void @extract_vector_mixed2(ptr %p, ptr %p2, i32 %v) {
; CHECK-LABEL: extract_vector_mixed2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a3, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a2
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer
  store <vscale x 1 x i32> %splat, ptr %p

  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)
  store <4 x i32> %fv, ptr %p2
  ret void
}

define void @extract_vector_mixed3(ptr %p, ptr %p2, i32 %v) {
; CHECK-LABEL: extract_vector_mixed3:
; CHECK:       # %bb.0:
; CHECK-NEXT:    vsetvli a3, zero, e32, mf2, ta, ma
; CHECK-NEXT:    vmv.v.x v8, a2
; CHECK-NEXT:    vse32.v v8, (a0)
; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
; CHECK-NEXT:    vse32.v v8, (a1)
; CHECK-NEXT:    ret
  %elt.head = insertelement <vscale x 1 x i32> poison, i32 %v, i32 0
  %splat = shufflevector <vscale x 1 x i32> %elt.head, <vscale x 1 x i32> poison, <vscale x 1 x i32> zeroinitializer
  %fv = call <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %splat, i64 0)

  store <vscale x 1 x i32> %splat, ptr %p
  store <4 x i32> %fv, ptr %p2
  ret void
}


declare <4 x i32> @llvm.vector.extract.v4i32.nxv1132(<vscale x 1 x i32> %vec, i64 %idx)
llvm/llvm/test/CodeGen/RISCV/rvv/splats-with-mixed-vl.ll
