119 lines
7.4 KiB
LLVM
119 lines
7.4 KiB
LLVM
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; RUN: opt -mtriple=thumbv8.1m.main -mve-tail-predication -tail-predication=enabled -mattr=+mve,+lob %s -S -o - | FileCheck %s
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; TODO: The unrolled pattern is preventing the transform
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; CHECK-LABEL: mul_v16i8_unroll
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; CHECK-NOT: call i32 @llvm.arm.vcpt
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define void @mul_v16i8_unroll(i8* noalias nocapture readonly %a, i8* noalias nocapture readonly %b, i8* noalias nocapture %c, i32 %N) {
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entry:
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%cmp8 = icmp eq i32 %N, 0
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%tmp8 = add i32 %N, 15
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%tmp9 = lshr i32 %tmp8, 4
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%tmp10 = shl nuw i32 %tmp9, 4
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%tmp11 = add i32 %tmp10, -16
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%tmp12 = lshr i32 %tmp11, 4
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%tmp13 = add nuw nsw i32 %tmp12, 1
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br i1 %cmp8, label %for.cond.cleanup, label %vector.ph
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vector.ph: ; preds = %entry
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%trip.count.minus.1 = add i32 %N, -1
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%broadcast.splatinsert10 = insertelement <16 x i32> undef, i32 %trip.count.minus.1, i32 0
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%broadcast.splat11 = shufflevector <16 x i32> %broadcast.splatinsert10, <16 x i32> undef, <16 x i32> zeroinitializer
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%xtraiter = and i32 %tmp13, 1
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%0 = icmp ult i32 %tmp12, 1
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br i1 %0, label %for.cond.cleanup.loopexit.unr-lcssa, label %vector.ph.new
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vector.ph.new: ; preds = %vector.ph
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %tmp13)
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%unroll_iter = sub i32 %tmp13, %xtraiter
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br label %vector.body
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vector.body: ; preds = %vector.body, %vector.ph.new
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%index = phi i32 [ 0, %vector.ph.new ], [ %index.next.1, %vector.body ]
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%niter = phi i32 [ %unroll_iter, %vector.ph.new ], [ %niter.nsub.1, %vector.body ]
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%broadcast.splatinsert = insertelement <16 x i32> undef, i32 %index, i32 0
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%broadcast.splat = shufflevector <16 x i32> %broadcast.splatinsert, <16 x i32> undef, <16 x i32> zeroinitializer
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%induction = add <16 x i32> %broadcast.splat, <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%tmp = getelementptr inbounds i8, i8* %a, i32 %index
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%tmp1 = icmp ule <16 x i32> %induction, %broadcast.splat11
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%tmp2 = bitcast i8* %tmp to <16 x i8>*
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%wide.masked.load = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp2, i32 4, <16 x i1> %tmp1, <16 x i8> undef)
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%tmp3 = getelementptr inbounds i8, i8* %b, i32 %index
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%tmp4 = bitcast i8* %tmp3 to <16 x i8>*
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%wide.masked.load2 = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp4, i32 4, <16 x i1> %tmp1, <16 x i8> undef)
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%mul = mul nsw <16 x i8> %wide.masked.load2, %wide.masked.load
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%tmp6 = getelementptr inbounds i8, i8* %c, i32 %index
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%tmp7 = bitcast i8* %tmp6 to <16 x i8>*
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tail call void @llvm.masked.store.v16i8.p0v16i8(<16 x i8> %mul, <16 x i8>* %tmp7, i32 4, <16 x i1> %tmp1)
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%index.next = add nuw nsw i32 %index, 16
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%niter.nsub = sub i32 %niter, 1
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%broadcast.splatinsert.1 = insertelement <16 x i32> undef, i32 %index.next, i32 0
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%broadcast.splat.1 = shufflevector <16 x i32> %broadcast.splatinsert.1, <16 x i32> undef, <16 x i32> zeroinitializer
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%induction.1 = add <16 x i32> %broadcast.splat.1, <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%tmp.1 = getelementptr inbounds i8, i8* %a, i32 %index.next
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%tmp1.1 = icmp ule <16 x i32> %induction.1, %broadcast.splat11
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%tmp2.1 = bitcast i8* %tmp.1 to <16 x i8>*
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%wide.masked.load.1 = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp2.1, i32 4, <16 x i1> %tmp1.1, <16 x i8> undef)
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%tmp3.1 = getelementptr inbounds i8, i8* %b, i32 %index.next
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%tmp4.1 = bitcast i8* %tmp3.1 to <16 x i8>*
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%wide.masked.load2.1 = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp4.1, i32 4, <16 x i1> %tmp1.1, <16 x i8> undef)
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%mul.1 = mul nsw <16 x i8> %wide.masked.load2.1, %wide.masked.load.1
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%tmp6.1 = getelementptr inbounds i8, i8* %c, i32 %index.next
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%tmp7.1 = bitcast i8* %tmp6.1 to <16 x i8>*
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tail call void @llvm.masked.store.v16i8.p0v16i8(<16 x i8> %mul.1, <16 x i8>* %tmp7.1, i32 4, <16 x i1> %tmp1.1)
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%index.next.1 = add i32 %index.next, 16
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%niter.nsub.1 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %niter.nsub, i32 1)
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%niter.ncmp.1 = icmp ne i32 %niter.nsub.1, 0
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br i1 %niter.ncmp.1, label %vector.body, label %for.cond.cleanup.loopexit.unr-lcssa.loopexit
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for.cond.cleanup.loopexit.unr-lcssa.loopexit: ; preds = %vector.body
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%index.unr.ph = phi i32 [ %index.next.1, %vector.body ]
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%tmp14.unr.ph = phi i32 [ -2, %vector.body ]
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br label %for.cond.cleanup.loopexit.unr-lcssa
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for.cond.cleanup.loopexit.unr-lcssa: ; preds = %for.cond.cleanup.loopexit.unr-lcssa.loopexit, %vector.ph
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%index.unr = phi i32 [ 0, %vector.ph ], [ %index.unr.ph, %for.cond.cleanup.loopexit.unr-lcssa.loopexit ]
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%tmp14.unr = phi i32 [ %tmp13, %vector.ph ], [ %tmp14.unr.ph, %for.cond.cleanup.loopexit.unr-lcssa.loopexit ]
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%lcmp.mod = icmp ne i32 %xtraiter, 0
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br i1 %lcmp.mod, label %vector.body.epil.preheader, label %for.cond.cleanup.loopexit
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vector.body.epil.preheader: ; preds = %for.cond.cleanup.loopexit.unr-lcssa
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br label %vector.body.epil
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vector.body.epil: ; preds = %vector.body.epil.preheader
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%index.epil = phi i32 [ %index.unr, %vector.body.epil.preheader ]
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%tmp14.epil = phi i32 [ %tmp14.unr, %vector.body.epil.preheader ]
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%broadcast.splatinsert.epil = insertelement <16 x i32> undef, i32 %index.epil, i32 0
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%broadcast.splat.epil = shufflevector <16 x i32> %broadcast.splatinsert.epil, <16 x i32> undef, <16 x i32> zeroinitializer
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%induction.epil = add <16 x i32> %broadcast.splat.epil, <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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%tmp.epil = getelementptr inbounds i8, i8* %a, i32 %index.epil
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%tmp1.epil = icmp ule <16 x i32> %induction.epil, %broadcast.splat11
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%tmp2.epil = bitcast i8* %tmp.epil to <16 x i8>*
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%wide.masked.load.epil = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp2.epil, i32 4, <16 x i1> %tmp1.epil, <16 x i8> undef)
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%tmp3.epil = getelementptr inbounds i8, i8* %b, i32 %index.epil
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%tmp4.epil = bitcast i8* %tmp3.epil to <16 x i8>*
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%wide.masked.load2.epil = tail call <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>* %tmp4.epil, i32 4, <16 x i1> %tmp1.epil, <16 x i8> undef)
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%mul.epil = mul nsw <16 x i8> %wide.masked.load2.epil, %wide.masked.load.epil
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%tmp6.epil = getelementptr inbounds i8, i8* %c, i32 %index.epil
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%tmp7.epil = bitcast i8* %tmp6.epil to <16 x i8>*
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tail call void @llvm.masked.store.v16i8.p0v16i8(<16 x i8> %mul.epil, <16 x i8>* %tmp7.epil, i32 4, <16 x i1> %tmp1.epil)
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%index.next.epil = add i32 %index.epil, 16
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%tmp15.epil = add nuw nsw i32 %tmp14.epil, -1
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%tmp16.epil = icmp ne i32 %tmp15.epil, 0
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br label %for.cond.cleanup.loopexit.epilog-lcssa
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for.cond.cleanup.loopexit.epilog-lcssa: ; preds = %vector.body.epil
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br label %for.cond.cleanup.loopexit
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for.cond.cleanup.loopexit: ; preds = %for.cond.cleanup.loopexit.unr-lcssa, %for.cond.cleanup.loopexit.epilog-lcssa
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br label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
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ret void
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}
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declare <16 x i8> @llvm.masked.load.v16i8.p0v16i8(<16 x i8>*, i32 immarg, <16 x i1>, <16 x i8>) #1
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declare void @llvm.masked.store.v16i8.p0v16i8(<16 x i8>, <16 x i8>*, i32 immarg, <16 x i1>) #2
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declare i32 @llvm.start.loop.iterations.i32(i32) #3
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declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32) #3
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