| ; RUN: opt -mtriple=thumbv8.1m.main -mve-tail-predication -disable-mve-tail-predication=false -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(i32* readonly %a, i32* readonly %b, i16* %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 |
| call void @llvm.set.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 [ %tmp13, %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, i32* %a, i32 %index |
| %tmp1 = icmp ule <4 x i32> %induction, %broadcast.splat11 |
| %tmp2 = bitcast i32* %tmp to <4 x i32>* |
| %wide.masked.load = tail call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %tmp2, i32 4, <4 x i1> %tmp1, <4 x i32> undef) |
| %tmp3 = getelementptr inbounds i32, i32* %b, i32 %index |
| %tmp4 = bitcast i32* %tmp3 to <4 x i32>* |
| %wide.masked.load2 = tail call <4 x i32> @llvm.masked.load.v4i32.p0v4i32(<4 x i32>* %tmp4, 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, i16* %c, i32 %index |
| %tmp7 = bitcast i16* %tmp6 to <4 x i16>* |
| tail call void @llvm.masked.store.v4i16.p0v4i16(<4 x i16> %trunc, <4 x i16>* %tmp7, 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.p0v4i32(<4 x i32>*, i32 immarg, <4 x i1>, <4 x i32>) |
| declare void @llvm.masked.store.v4i16.p0v4i16(<4 x i16>, <4 x i16>*, i32 immarg, <4 x i1>) |
| declare void @llvm.set.loop.iterations.i32(i32) |
| declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) |