Mercurial > projects > ldc
annotate tests/mini/intrinsics_ovf.d @ 1646:a8fc855f156e
Don't remove an old .o with -output-{bc,ll,s}.
author | Matti Niemenmaa <matti.niemenmaa+hg@iki.fi> |
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date | Tue, 09 Mar 2010 23:21:48 +0200 |
parents | 34f2fd925de3 |
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rev | line source |
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Intrinsics shouldn't see struct padding, so use a special TargetABI for them
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1 module intrinsics_ovf; |
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2 |
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3 |
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4 //version = PRINTF; |
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5 |
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6 version(PRINTF) |
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7 extern(C) int printf(char*, ...); |
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8 |
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9 |
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10 import ldc.intrinsics; |
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11 |
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12 |
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13 int saddo(int a, int b, out bool overflow) { |
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14 auto Result = llvm_sadd_with_overflow(a, b); |
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15 overflow = Result.overflow; |
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16 return Result.result; |
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17 } |
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18 |
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19 int uaddo(int a, int b, out bool overflow) { |
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20 auto Result = llvm_uadd_with_overflow(a, b); |
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21 overflow = Result.overflow; |
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22 return Result.result; |
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23 } |
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24 |
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25 int smulo(int a, int b, out bool overflow) { |
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26 auto Result = llvm_smul_with_overflow(a, b); |
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27 overflow = Result.overflow; |
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28 return Result.result; |
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29 } |
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30 |
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31 /* |
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32 uint umulo(uint a, uint b, out bool overflow) { |
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33 auto Result = llvm_umul_with_overflow(a, b); |
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34 overflow = Result.overflow; |
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35 return Result.result; |
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36 } |
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37 */ |
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38 |
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39 void test(int function(int, int, out bool) fn, |
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40 int a, int b, int result_e, bool ovf_e) { |
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41 version(PRINTF) |
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42 printf("%8x :: %8x :: %8x :: %.*s\n", a, b, result_e, |
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43 (ovf_e ? "true" : "false")); |
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44 |
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45 bool ovf; |
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46 int result = fn(a, b, ovf); |
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47 |
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48 version(PRINTF) |
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49 printf("____________________ %8x :: %.*s\n", result, |
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50 (ovf ? "true" : "false")); |
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51 |
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52 assert(ovf == ovf_e); |
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53 assert(result == result_e); |
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54 } |
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55 |
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56 void main() { |
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57 test(&saddo, int.min, int.min, int.min + int.min, true); |
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58 test(&saddo, int.min, int.max, int.min + int.max, false); |
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59 test(&saddo, 1, int.max, 1 + int.max, true); |
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60 test(&saddo, 1, 2, 3, false); |
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61 test(&saddo, -1, -2, -3, false); |
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62 |
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63 test(&uaddo, 0, uint.max, 0 + uint.max, false); |
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64 test(&uaddo, 1, uint.max, 1 + uint.max, true); |
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65 test(&uaddo, 1, 2, 3, false); |
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66 |
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67 test(&smulo, int.min, int.min, int.min * int.min, true); |
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68 test(&smulo, int.min, int.max, int.min * int.max, true); |
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69 test(&smulo, int.max, int.max, int.max * int.max, true); |
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70 test(&smulo, 1, int.max, 1 * int.max, false); |
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71 test(&smulo, 2, int.max/2, 2 * (int.max/2), false); |
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72 test(&smulo, 2, int.max/2 + 1, 2 * (int.max/2 + 1), true); |
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73 test(&smulo, 2, int.min/2, 2 * (int.min/2), false); |
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74 test(&smulo, 2, int.min/2 - 1, 2 * (int.min/2 - 1), true); |
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75 test(&smulo, 1, 2, 2, false); |
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76 test(&smulo, -1, -2, 2, false); |
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77 } |