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; REQUIRES: asserts
; RUN: opt -passes=loop-vectorize -mcpu=neoverse-v1 -disable-output %s -debug \
; RUN: -prefer-predicate-over-epilogue=scalar-epilogue 2>&1 | FileCheck %s
target triple="aarch64--linux-gnu"
; CHECK: LV: Checking a loop in 'gather_nxv4i32_loaded_index'
; CHECK: LV: Found an estimated cost of 81 for VF vscale x 4 For instruction: %1 = load float, ptr %arrayidx3, align 4
define void @gather_nxv4i32_loaded_index(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, ptr noalias nocapture %c, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i64, ptr %b, i64 %indvars.iv
%0 = load i64, ptr %arrayidx, align 8
%arrayidx3 = getelementptr inbounds float, ptr %a, i64 %0
%1 = load float, ptr %arrayidx3, align 4
%arrayidx5 = getelementptr inbounds float, ptr %c, i64 %indvars.iv
store float %1, ptr %arrayidx5, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; CHECK: LV: Checking a loop in 'scatter_nxv4i32_loaded_index'
; CHECK: LV: Found an estimated cost of 81 for VF vscale x 4 For instruction: store float %1, ptr %arrayidx5, align 4
define void @scatter_nxv4i32_loaded_index(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, ptr noalias nocapture %c, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i64, ptr %b, i64 %indvars.iv
%0 = load i64, ptr %arrayidx, align 8
%arrayidx3 = getelementptr inbounds float, ptr %a, i64 %indvars.iv
%1 = load float, ptr %arrayidx3, align 4
%arrayidx5 = getelementptr inbounds float, ptr %c, i64 %0
store float %1, ptr %arrayidx5, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; NOTE: For runtime-determined strides the vectoriser versions the loop and adds SCEV checks
; to ensure the stride value is always 1. Therefore, it can assume a contiguous load and a cost of 1.
; CHECK: LV: Checking a loop in 'gather_nxv4i32_unknown_stride'
; CHECK: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %0 = load float, ptr %arrayidx, align 4
define void @gather_nxv4i32_unknown_stride(ptr noalias nocapture readonly %a, ptr noalias nocapture %b, i64 %stride, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, %stride
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv.stride2
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; NOTE: For runtime-determined strides the vectoriser versions the loop and adds SCEV checks
; to ensure the stride value is always 1. Therefore, it can assume a contiguous load and cost is 1.
; CHECK: LV: Checking a loop in 'scatter_nxv4i32_unknown_stride'
; CHECK: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: store float %0, ptr %arrayidx2, align 4
define void @scatter_nxv4i32_unknown_stride(ptr noalias nocapture readonly %a, ptr noalias nocapture %b, i64 %stride, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, %stride
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv.stride2
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; CHECK: LV: Checking a loop in 'gather_nxv4i32_stride2'
; CHECK: LV: Found an estimated cost of 2 for VF vscale x 4 For instruction: %0 = load float, ptr %arrayidx, align 4
define void @gather_nxv4i32_stride2(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, 2
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv.stride2
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; CHECK: LV: Checking a loop in 'scatter_nxv4i32_stride2'
; CHECK: LV: Found an estimated cost of 81 for VF vscale x 4 For instruction: store float %0, ptr %arrayidx2, align 4
define void @scatter_nxv4i32_stride2(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, 2
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv.stride2
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; CHECK: LV: Checking a loop in 'gather_nxv4i32_stride64'
; CHECK: LV: Found an estimated cost of 81 for VF vscale x 4 For instruction: %0 = load float, ptr %arrayidx, align 4
define void @gather_nxv4i32_stride64(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, 64
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv.stride2
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
; CHECK: LV: Checking a loop in 'scatter_nxv4i32_stride64'
; CHECK: LV: Found an estimated cost of 81 for VF vscale x 4 For instruction: store float %0, ptr %arrayidx2, align 4
define void @scatter_nxv4i32_stride64(ptr noalias nocapture readonly %a, ptr noalias nocapture readonly %b, i64 %n) #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%indvars.iv.stride2 = mul i64 %indvars.iv, 64
%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv
%0 = load float, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float, ptr %a, i64 %indvars.iv.stride2
store float %0, ptr %arrayidx2, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond.not = icmp eq i64 %indvars.iv.next, %n
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !llvm.loop !0
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void
}
attributes #0 = { vscale_range(1, 16) "target-features"="+sve" }
!0 = distinct !{!0, !1, !2, !3, !4, !5}
!1 = !{!"llvm.loop.mustprogress"}
!2 = !{!"llvm.loop.vectorize.width", i32 4}
!3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
!4 = !{!"llvm.loop.interleave.count", i32 1}
!5 = !{!"llvm.loop.vectorize.enable", i1 true}
|
