| 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
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| 2 | // REQUIRES: librt_has_subvti3 |
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| 3 | // REQUIRES: int128 |
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| 4 | |
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| 5 | #include "int_lib.h" |
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| 6 | #include <stdio.h> |
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| 7 | #include <stdlib.h> |
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| 8 | |
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| 9 | #ifdef CRT_HAS_128BIT |
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| 10 | |
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| 11 | // Returns: a - b |
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| 12 | |
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| 13 | // Effects: aborts if a - b overflows |
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| 14 | |
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| 15 | COMPILER_RT_ABI ti_int __subvti3(ti_int a, ti_int b); |
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| 16 | |
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| 17 | int test__subvti3(ti_int a, ti_int b) |
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| 18 | { |
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| 19 | ti_int x = __subvti3(a, b); |
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| 20 | ti_int expected = a - b; |
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| 21 | if (x != expected) |
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| 22 | { |
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| 23 | twords at; |
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| 24 | at.all = a; |
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| 25 | twords bt; |
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| 26 | bt.all = b; |
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| 27 | twords xt; |
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| 28 | xt.all = x; |
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| 29 | twords expectedt; |
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| 30 | expectedt.all = expected; |
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| 31 | printf(format: "error in test__subvsi3(0x%.16llX%.16llX, 0x%.16llX%.16llX) = " |
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| 32 | "0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n" , |
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| 33 | at.s.high, at.s.low, bt.s.high, bt.s.low, xt.s.high, xt.s.low, |
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| 34 | expectedt.s.high, expectedt.s.low); |
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| 35 | } |
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| 36 | return x != expected; |
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| 37 | } |
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| 38 | |
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| 39 | #endif |
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| 40 | |
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| 41 | int main() |
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| 42 | { |
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| 43 | #ifdef CRT_HAS_128BIT |
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| 44 | // test__subvti3(make_ti(0x8000000000000000LL, 0), 1); // should abort |
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| 45 | // test__subvti3(0, make_ti(0x8000000000000000LL, 0)); // should abort |
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| 46 | // test__subvti3(1, make_ti(0x8000000000000000LL, 0)); // should abort |
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| 47 | // test__subvti3(make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL), -1); // should abort |
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| 48 | // test__subvti3(-2, make_ti(0x7FFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)); // should abort |
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| 49 | |
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| 50 | if (test__subvti3(a: make_ti(h: 0x8000000000000000LL, l: 0), b: -1)) |
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| 51 | return 1; |
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| 52 | if (test__subvti3(a: make_ti(h: 0x8000000000000000LL, l: 0), b: 0)) |
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| 53 | return 1; |
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| 54 | if (test__subvti3(a: -1, b: make_ti(h: 0x8000000000000000LL, l: 0))) |
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| 55 | return 1; |
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| 56 | if (test__subvti3(a: make_ti(h: 0x7FFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL), b: 1)) |
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| 57 | return 1; |
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| 58 | if (test__subvti3(a: make_ti(h: 0x7FFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL), b: 0)) |
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| 59 | return 1; |
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| 60 | if (test__subvti3(a: 1, b: make_ti(h: 0x7FFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL))) |
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| 61 | return 1; |
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| 62 | if (test__subvti3(a: 0, b: make_ti(h: 0x7FFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL))) |
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| 63 | return 1; |
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| 64 | if (test__subvti3(a: -1, b: make_ti(h: 0x7FFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL))) |
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| 65 | return 1; |
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| 66 | |
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| 67 | #else |
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| 68 | printf("skipped\n" ); |
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| 69 | #endif |
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| 70 | return 0; |
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| 71 | } |
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| 72 | |
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