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annotate test/CodeGen/AMDGPU/combine_vloads.ll @ 95:afa8332a0e37

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
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children 803732b1fca8
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck -check-prefix=EG %s
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2
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3 ;
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4 ; kernel void combine_vloads(global char8* src, global char8* result) {
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5 ; for (int i = 0; i < 1024; ++i)
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6 ; result[i] = src[0] + src[1] + src[2] + src[3];
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7 ; }
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8 ;
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9
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10
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11 ; 128-bit loads instead of many 8-bit
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12 ; EG-LABEL: {{^}}combine_vloads:
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13 ; EG: VTX_READ_128
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14 ; EG: VTX_READ_128
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15 define void @combine_vloads(<8 x i8> addrspace(1)* nocapture %src, <8 x i8> addrspace(1)* nocapture %result) nounwind {
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16 entry:
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17 br label %for.body
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18
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19 for.exit: ; preds = %for.body
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20 ret void
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21
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22 for.body: ; preds = %for.body, %entry
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23 %i.01 = phi i32 [ 0, %entry ], [ %tmp19, %for.body ]
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24 %arrayidx_v4 = bitcast <8 x i8> addrspace(1)* %src to <32 x i8> addrspace(1)*
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25 %0 = bitcast <32 x i8> addrspace(1)* %arrayidx_v4 to <8 x i32> addrspace(1)*
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26 %vecload2 = load <8 x i32>, <8 x i32> addrspace(1)* %0, align 32
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27 %1 = bitcast <8 x i32> %vecload2 to <32 x i8>
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28 %tmp5 = shufflevector <32 x i8> %1, <32 x i8> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
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29 %tmp8 = shufflevector <32 x i8> %1, <32 x i8> undef, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
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30 %tmp9 = add nsw <8 x i8> %tmp5, %tmp8
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31 %tmp12 = shufflevector <32 x i8> %1, <32 x i8> undef, <8 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23>
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32 %tmp13 = add nsw <8 x i8> %tmp9, %tmp12
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33 %tmp16 = shufflevector <32 x i8> %1, <32 x i8> undef, <8 x i32> <i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
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34 %tmp17 = add nsw <8 x i8> %tmp13, %tmp16
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35 %scevgep = getelementptr <8 x i8>, <8 x i8> addrspace(1)* %result, i32 %i.01
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36 %2 = bitcast <8 x i8> %tmp17 to <2 x i32>
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37 %3 = bitcast <8 x i8> addrspace(1)* %scevgep to <2 x i32> addrspace(1)*
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38 store <2 x i32> %2, <2 x i32> addrspace(1)* %3, align 8
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39 %tmp19 = add nsw i32 %i.01, 1
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40 %exitcond = icmp eq i32 %tmp19, 1024
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41 br i1 %exitcond, label %for.exit, label %for.body
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42 }