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; RUN: opt -mtriple=thumbv8.1m.main -mve-tail-predication -tail-predication=enabled -mattr=+mve,+lob %s -S -o - | FileCheck %s
; TODO: We should be able to generate a vctp for the loads.
; CHECK-LABEL: trunc_v4i32_v4i16
; CHECK-NOT: vcpt
define void @trunc_v4i32_v4i16(ptr readonly %a, ptr readonly %b, ptr %c, i32 %N) {
entry:
%cmp8 = icmp eq i32 %N, 0
%tmp8 = add i32 %N, 3
%tmp9 = lshr i32 %tmp8, 2
%tmp10 = shl nuw i32 %tmp9, 2
%tmp11 = add i32 %tmp10, -4
%tmp12 = lshr i32 %tmp11, 2
%tmp13 = add nuw nsw i32 %tmp12, 1
br i1 %cmp8, label %for.cond.cleanup, label %vector.ph
vector.ph: ; preds = %entry
%trip.count.minus.1 = add i32 %N, -1
%broadcast.splatinsert10 = insertelement <4 x i32> undef, i32 %trip.count.minus.1, i32 0
%broadcast.splat11 = shufflevector <4 x i32> %broadcast.splatinsert10, <4 x i32> undef, <4 x i32> zeroinitializer
%start = call i32 @llvm.start.loop.iterations.i32(i32 %tmp13)
br label %vector.body
vector.body: ; preds = %vector.body, %vector.ph
%index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
%tmp14 = phi i32 [ %start, %vector.ph ], [ %tmp15, %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>
%tmp = getelementptr inbounds i32, ptr %a, i32 %index
%tmp1 = icmp ule <4 x i32> %induction, %broadcast.splat11
%wide.masked.load = tail call <4 x i32> @llvm.masked.load.v4i32.p0(ptr %tmp, i32 4, <4 x i1> %tmp1, <4 x i32> undef)
%tmp3 = getelementptr inbounds i32, ptr %b, i32 %index
%wide.masked.load2 = tail call <4 x i32> @llvm.masked.load.v4i32.p0(ptr %tmp3, i32 4, <4 x i1> %tmp1, <4 x i32> undef)
%mul = mul nsw <4 x i32> %wide.masked.load2, %wide.masked.load
%trunc = trunc <4 x i32> %mul to <4 x i16>
%tmp6 = getelementptr inbounds i16, ptr %c, i32 %index
tail call void @llvm.masked.store.v4i16.p0(<4 x i16> %trunc, ptr %tmp6, i32 4, <4 x i1> %tmp1)
%index.next = add i32 %index, 4
%tmp15 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %tmp14, i32 1)
%tmp16 = icmp ne i32 %tmp15, 0
br i1 %tmp16, label %vector.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %vector.body, %entry
ret void
}
declare <4 x i32> @llvm.masked.load.v4i32.p0(ptr, i32 immarg, <4 x i1>, <4 x i32>)
declare void @llvm.masked.store.v4i16.p0(<4 x i16>, ptr, i32 immarg, <4 x i1>)
declare i32 @llvm.start.loop.iterations.i32(i32)
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
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