test/CodeGen/Thumb2/LowOverheadLoops/vector-arith-codegen.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=armv8.1m.main -mattr=+mve -enable-arm-maskedldst=true -disable-mve-tail-predication=false --verify-machineinstrs %s -o - | FileCheck %s

define dso_local i32 @mul_reduce_add(i32* noalias nocapture readonly %a, i32* noalias nocapture readonly %b, i32 %N) {
; CHECK-LABEL: mul_reduce_add:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    cmp r2, #0
; CHECK-NEXT:    itt eq
; CHECK-NEXT:    moveq r0, #0
; CHECK-NEXT:    bxeq lr
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    adds r3, r2, #3
; CHECK-NEXT:    vmov.i32 q0, #0x0
; CHECK-NEXT:    bic r3, r3, #3
; CHECK-NEXT:    sub.w r12, r3, #4
; CHECK-NEXT:    movs r3, #1
; CHECK-NEXT:    add.w lr, r3, r12, lsr #2
; CHECK-NEXT:    dls lr, lr
; CHECK-NEXT:  .LBB0_1: @ %vector.body
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    vmov q1, q0
; CHECK-NEXT:    vctp.32 r2
; CHECK-NEXT:    vpstt
; CHECK-NEXT:    vldrwt.u32 q0, [r0]
; CHECK-NEXT:    vldrwt.u32 q2, [r1]
; CHECK-NEXT:    mov r3, r2
; CHECK-NEXT:    vmul.i32 q0, q2, q0
; CHECK-NEXT:    adds r0, #16
; CHECK-NEXT:    adds r1, #16
; CHECK-NEXT:    subs r2, #4
; CHECK-NEXT:    vadd.i32 q0, q0, q1
; CHECK-NEXT:    le lr, .LBB0_1
; CHECK-NEXT:  @ %bb.2: @ %middle.block
; CHECK-NEXT:    vctp.32 r3
; CHECK-NEXT:    vpsel q0, q0, q1
; CHECK-NEXT:    vaddv.u32 r0, q0
; CHECK-NEXT:    pop {r7, pc}
entry:
  %cmp8 = icmp eq i32 %N, 0
  br i1 %cmp8, label %for.cond.cleanup, label %vector.ph

vector.ph:                                        ; preds = %entry
  %n.rnd.up = add i32 %N, 3
  %n.vec = and i32 %n.rnd.up, -4
  %trip.count.minus.1 = add i32 %N, -1
  %broadcast.splatinsert11 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
  %broadcast.splat12 = shufflevector <4 x i32> %broadcast.splatinsert11, <4 x i32> undef, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %6, %vector.body ]
  %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
  %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
  %0 = getelementptr inbounds i32, i32* %a, i32 %index
  %1 = icmp ule <4 x i32> %induction, %broadcast.splat12
  %2 = bitcast i32* %0 to <4 x i32>*
  %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %2, i32 4, <4 x i1> %1, <4 x i32> undef)
  %3 = getelementptr inbounds i32, i32* %b, i32 %index
  %4 = bitcast i32* %3 to <4 x i32>*
  %wide.masked.load13 = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %4, i32 4, <4 x i1> %1, <4 x i32> undef)
  %5 = mul nsw <4 x i32> %wide.masked.load13, %wide.masked.load
  %6 = add nsw <4 x i32> %5, %vec.phi
  %index.next = add i32 %index, 4
  %7 = icmp eq i32 %index.next, %n.vec
  br i1 %7, label %middle.block, label %vector.body

middle.block:                                     ; preds = %vector.body
  %8 = select <4 x i1> %1, <4 x i32> %6, <4 x i32> %vec.phi
  %9 = call i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32> %8)
  br label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %middle.block, %entry
  %res.0.lcssa = phi i32 [ 0, %entry ], [ %9, %middle.block ]
  ret i32 %res.0.lcssa
}

define dso_local i32 @mul_reduce_add_const(i32* noalias nocapture readonly %a, i32 %b, i32 %N) {
; CHECK-LABEL: mul_reduce_add_const:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    cmp r2, #0
; CHECK-NEXT:    itt eq
; CHECK-NEXT:    moveq r0, #0
; CHECK-NEXT:    bxeq lr
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    adds r1, r2, #3
; CHECK-NEXT:    movs r3, #1
; CHECK-NEXT:    bic r1, r1, #3
; CHECK-NEXT:    vmov.i32 q0, #0x0
; CHECK-NEXT:    subs r1, #4
; CHECK-NEXT:    add.w lr, r3, r1, lsr #2
; CHECK-NEXT:    dls lr, lr
; CHECK-NEXT:  .LBB1_1: @ %vector.body
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    mov r1, r2
; CHECK-NEXT:    vctp.32 r2
; CHECK-NEXT:    vmov q1, q0
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vldrwt.u32 q0, [r0]
; CHECK-NEXT:    adds r0, #16
; CHECK-NEXT:    subs r2, #4
; CHECK-NEXT:    vadd.i32 q0, q0, q1
; CHECK-NEXT:    le lr, .LBB1_1
; CHECK-NEXT:  @ %bb.2: @ %middle.block
; CHECK-NEXT:    vctp.32 r1
; CHECK-NEXT:    vpsel q0, q0, q1
; CHECK-NEXT:    vaddv.u32 r0, q0
; CHECK-NEXT:    pop {r7, pc}
entry:
  %cmp6 = icmp eq i32 %N, 0
  br i1 %cmp6, label %for.cond.cleanup, label %vector.ph

vector.ph:                                        ; preds = %entry
  %n.rnd.up = add i32 %N, 3
  %n.vec = and i32 %n.rnd.up, -4
  %trip.count.minus.1 = add i32 %N, -1
  %broadcast.splatinsert9 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
  %broadcast.splat10 = shufflevector <4 x i32> %broadcast.splatinsert9, <4 x i32> undef, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %3, %vector.body ]
  %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
  %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
  %0 = getelementptr inbounds i32, i32* %a, i32 %index
  %1 = icmp ule <4 x i32> %induction, %broadcast.splat10
  %2 = bitcast i32* %0 to <4 x i32>*
  %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %2, i32 4, <4 x i1> %1, <4 x i32> undef)
  %3 = add nsw <4 x i32> %wide.masked.load, %vec.phi
  %index.next = add i32 %index, 4
  %4 = icmp eq i32 %index.next, %n.vec
  br i1 %4, label %middle.block, label %vector.body

middle.block:                                     ; preds = %vector.body
  %5 = select <4 x i1> %1, <4 x i32> %3, <4 x i32> %vec.phi
  %6 = call i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32> %5)
  br label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %middle.block, %entry
  %res.0.lcssa = phi i32 [ 0, %entry ], [ %6, %middle.block ]
  ret i32 %res.0.lcssa
}

define dso_local i32 @add_reduce_add_const(i32* noalias nocapture readonly %a, i32 %b, i32 %N) {
; CHECK-LABEL: add_reduce_add_const:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    cmp r2, #0
; CHECK-NEXT:    itt eq
; CHECK-NEXT:    moveq r0, #0
; CHECK-NEXT:    bxeq lr
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    adds r1, r2, #3
; CHECK-NEXT:    movs r3, #1
; CHECK-NEXT:    bic r1, r1, #3
; CHECK-NEXT:    vmov.i32 q0, #0x0
; CHECK-NEXT:    subs r1, #4
; CHECK-NEXT:    add.w lr, r3, r1, lsr #2
; CHECK-NEXT:    dls lr, lr
; CHECK-NEXT:  .LBB2_1: @ %vector.body
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    mov r1, r2
; CHECK-NEXT:    vctp.32 r2
; CHECK-NEXT:    vmov q1, q0
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vldrwt.u32 q0, [r0]
; CHECK-NEXT:    adds r0, #16
; CHECK-NEXT:    subs r2, #4
; CHECK-NEXT:    vadd.i32 q0, q0, q1
; CHECK-NEXT:    le lr, .LBB2_1
; CHECK-NEXT:  @ %bb.2: @ %middle.block
; CHECK-NEXT:    vctp.32 r1
; CHECK-NEXT:    vpsel q0, q0, q1
; CHECK-NEXT:    vaddv.u32 r0, q0
; CHECK-NEXT:    pop {r7, pc}
entry:
  %cmp6 = icmp eq i32 %N, 0
  br i1 %cmp6, label %for.cond.cleanup, label %vector.ph

vector.ph:                                        ; preds = %entry
  %n.rnd.up = add i32 %N, 3
  %n.vec = and i32 %n.rnd.up, -4
  %trip.count.minus.1 = add i32 %N, -1
  %broadcast.splatinsert9 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
  %broadcast.splat10 = shufflevector <4 x i32> %broadcast.splatinsert9, <4 x i32> undef, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %3, %vector.body ]
  %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
  %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
  %0 = getelementptr inbounds i32, i32* %a, i32 %index
  %1 = icmp ule <4 x i32> %induction, %broadcast.splat10
  %2 = bitcast i32* %0 to <4 x i32>*
  %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %2, i32 4, <4 x i1> %1, <4 x i32> undef)
  %3 = add nsw <4 x i32> %wide.masked.load, %vec.phi
  %index.next = add i32 %index, 4
  %4 = icmp eq i32 %index.next, %n.vec
  br i1 %4, label %middle.block, label %vector.body

middle.block:                                     ; preds = %vector.body
  %5 = select <4 x i1> %1, <4 x i32> %3, <4 x i32> %vec.phi
  %6 = call i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32> %5)
  br label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %middle.block, %entry
  %res.0.lcssa = phi i32 [ 0, %entry ], [ %6, %middle.block ]
  ret i32 %res.0.lcssa
}

define dso_local void @vector_mul_const(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %c, i32 %N) {
; CHECK-LABEL: vector_mul_const:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    cmp r3, #0
; CHECK-NEXT:    it eq
; CHECK-NEXT:    popeq {r7, pc}
; CHECK-NEXT:    add.w r12, r3, #3
; CHECK-NEXT:    mov.w lr, #1
; CHECK-NEXT:    bic r12, r12, #3
; CHECK-NEXT:    sub.w r12, r12, #4
; CHECK-NEXT:    add.w lr, lr, r12, lsr #2
; CHECK-NEXT:    dls lr, lr
; CHECK-NEXT:  .LBB3_1: @ %vector.body
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    vctp.32 r3
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vldrwt.u32 q0, [r1]
; CHECK-NEXT:    vmul.i32 q0, q0, r2
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vstrwt.32 q0, [r0]
; CHECK-NEXT:    adds r1, #16
; CHECK-NEXT:    adds r0, #16
; CHECK-NEXT:    subs r3, #4
; CHECK-NEXT:    le lr, .LBB3_1
; CHECK-NEXT:  @ %bb.2: @ %for.cond.cleanup
; CHECK-NEXT:    pop {r7, pc}
entry:
  %cmp6 = icmp eq i32 %N, 0
  br i1 %cmp6, label %for.cond.cleanup, label %vector.ph

vector.ph:                                        ; preds = %entry
  %n.rnd.up = add i32 %N, 3
  %n.vec = and i32 %n.rnd.up, -4
  %trip.count.minus.1 = add i32 %N, -1
  %broadcast.splatinsert8 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
  %broadcast.splat9 = shufflevector <4 x i32> %broadcast.splatinsert8, <4 x i32> undef, <4 x i32> zeroinitializer
  %broadcast.splatinsert10 = insertelement <4 x i32> undef, i32 %c, i32 0
  %broadcast.splat11 = shufflevector <4 x i32> %broadcast.splatinsert10, <4 x i32> undef, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
  %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
  %0 = getelementptr inbounds i32, i32* %b, i32 %index
  %1 = icmp ule <4 x i32> %induction, %broadcast.splat9
  %2 = bitcast i32* %0 to <4 x i32>*
  %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %2, i32 4, <4 x i1> %1, <4 x i32> undef)
  %3 = mul nsw <4 x i32> %wide.masked.load, %broadcast.splat11
  %4 = getelementptr inbounds i32, i32* %a, i32 %index
  %5 = bitcast i32* %4 to <4 x i32>*
  call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %3, <4 x i32>* %5, i32 4, <4 x i1> %1)
  %index.next = add i32 %index, 4
  %6 = icmp eq i32 %index.next, %n.vec
  br i1 %6, label %for.cond.cleanup, label %vector.body

for.cond.cleanup:                                 ; preds = %vector.body, %entry
  ret void
}

define dso_local void @vector_add_const(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %c, i32 %N) {
; CHECK-LABEL: vector_add_const:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    push {r7, lr}
; CHECK-NEXT:    cmp r3, #0
; CHECK-NEXT:    it eq
; CHECK-NEXT:    popeq {r7, pc}
; CHECK-NEXT:    add.w r12, r3, #3
; CHECK-NEXT:    mov.w lr, #1
; CHECK-NEXT:    bic r12, r12, #3
; CHECK-NEXT:    sub.w r12, r12, #4
; CHECK-NEXT:    add.w lr, lr, r12, lsr #2
; CHECK-NEXT:    dls lr, lr
; CHECK-NEXT:  .LBB4_1: @ %vector.body
; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
; CHECK-NEXT:    vctp.32 r3
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vldrwt.u32 q0, [r1]
; CHECK-NEXT:    vadd.i32 q0, q0, r2
; CHECK-NEXT:    vpst
; CHECK-NEXT:    vstrwt.32 q0, [r0]
; CHECK-NEXT:    adds r1, #16
; CHECK-NEXT:    adds r0, #16
; CHECK-NEXT:    subs r3, #4
; CHECK-NEXT:    le lr, .LBB4_1
; CHECK-NEXT:  @ %bb.2: @ %for.cond.cleanup
; CHECK-NEXT:    pop {r7, pc}
entry:
  %cmp6 = icmp eq i32 %N, 0
  br i1 %cmp6, label %for.cond.cleanup, label %vector.ph

vector.ph:                                        ; preds = %entry
  %n.rnd.up = add i32 %N, 3
  %n.vec = and i32 %n.rnd.up, -4
  %trip.count.minus.1 = add i32 %N, -1
  %broadcast.splatinsert8 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
  %broadcast.splat9 = shufflevector <4 x i32> %broadcast.splatinsert8, <4 x i32> undef, <4 x i32> zeroinitializer
  %broadcast.splatinsert10 = insertelement <4 x i32> undef, i32 %c, i32 0
  %broadcast.splat11 = shufflevector <4 x i32> %broadcast.splatinsert10, <4 x i32> undef, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %broadcast.splatinsert = insertelement <4 x i32> undef, i32 %index, i32 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> undef, <4 x i32> zeroinitializer
  %induction = add <4 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3>
  %0 = getelementptr inbounds i32, i32* %b, i32 %index
  %1 = icmp ule <4 x i32> %induction, %broadcast.splat9
  %2 = bitcast i32* %0 to <4 x i32>*
  %wide.masked.load = call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %2, i32 4, <4 x i1> %1, <4 x i32> undef)
  %3 = add nsw <4 x i32> %wide.masked.load, %broadcast.splat11
  %4 = getelementptr inbounds i32, i32* %a, i32 %index
  %5 = bitcast i32* %4 to <4 x i32>*
  call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> %3, <4 x i32>* %5, i32 4, <4 x i1> %1)
  %index.next = add i32 %index, 4
  %6 = icmp eq i32 %index.next, %n.vec
  br i1 %6, label %for.cond.cleanup, label %vector.body

for.cond.cleanup:                                 ; preds = %vector.body, %entry
  ret void
}

declare <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>*, i32 immarg, <4 x i1>, <4 x i32>)
declare void @llvm.masked.store.v4i32.p0v4i32(<4 x i32>, <4 x i32>*, i32 immarg, <4 x i1>) #4
declare i32 @llvm.experimental.vector.reduce.add.v4i32(<4 x i32>)