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207
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1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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2 ; RUN: opt < %s -loop-unroll -codegenprepare -S -mtriple=x86_64-- -mattr=+xop | FileCheck %s
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3
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4 define i32 @bitreverse_i32(i32 %a) {
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5 ; CHECK-LABEL: @bitreverse_i32(
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6 ; CHECK-NEXT: entry:
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7 ; CHECK-NEXT: [[REV:%.*]] = call i32 @llvm.bitreverse.i32(i32 [[A:%.*]])
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8 ; CHECK-NEXT: ret i32 [[REV]]
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9 ;
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10 entry:
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11 br label %for.body
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12
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13 for.cond.cleanup: ; preds = %for.body
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14 ret i32 %or
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15
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16 for.body: ; preds = %for.body, %entry
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17 %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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18 %b.07 = phi i32 [ 0, %entry ], [ %or, %for.body ]
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19 %shr = lshr i32 %a, %i.08
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20 %and = and i32 %shr, 1
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21 %sub = sub nuw nsw i32 31, %i.08
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22 %shl = shl i32 %and, %sub
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23 %or = or i32 %shl, %b.07
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24 %inc = add nuw nsw i32 %i.08, 1
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25 %exitcond = icmp eq i32 %inc, 32
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26 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !3
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27 }
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28
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29 ; PR40058
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30 define i64 @bitreverse_i64(i64 %0) {
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31 ; CHECK-LABEL: @bitreverse_i64(
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32 ; CHECK-NEXT: [[REV:%.*]] = call i64 @llvm.bitreverse.i64(i64 [[TMP0:%.*]])
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33 ; CHECK-NEXT: ret i64 [[REV]]
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34 ;
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35 %2 = lshr i64 %0, 1
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36 %3 = and i64 %2, 6148914691236517205
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37 %4 = shl i64 %0, 1
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38 %5 = and i64 %4, -6148914691236517206
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39 %6 = or i64 %3, %5
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40 %7 = lshr i64 %6, 2
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41 %8 = and i64 %7, 3689348814741910323
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42 %9 = shl i64 %6, 2
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43 %10 = and i64 %9, -3689348814741910324
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44 %11 = or i64 %8, %10
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45 %12 = lshr i64 %11, 4
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46 %13 = and i64 %12, 1085102592571150095
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47 %14 = shl i64 %11, 4
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48 %15 = and i64 %14, -1085102592571150096
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49 %16 = or i64 %13, %15
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50 %17 = lshr i64 %16, 8
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51 %18 = and i64 %17, 71777214294589695
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52 %19 = shl i64 %16, 8
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53 %20 = and i64 %19, -71777214294589696
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54 %21 = or i64 %18, %20
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55 %22 = lshr i64 %21, 16
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56 %23 = and i64 %22, 281470681808895
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57 %24 = shl i64 %21, 16
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58 %25 = and i64 %24, -281470681808896
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59 %26 = or i64 %23, %25
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60 %27 = tail call i64 @llvm.fshl.i64(i64 %26, i64 %26, i64 32)
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61 ret i64 %27
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62 }
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63 declare i64 @llvm.fshl.i64(i64, i64, i64)
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64
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65 !llvm.module.flags = !{!0, !1}
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66 !llvm.ident = !{!2}
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67
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68 !0 = !{i32 1, !"wchar_size", i32 4}
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69 !1 = !{i32 1, !"min_enum_size", i32 4}
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70 !2 = !{!"clang version 3.8.0"}
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71 !3 = distinct !{!3, !4}
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72 !4 = !{!"llvm.loop.unroll.full"}
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