| // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // asmjs can't even pass i128 as arguments or return values, so ignore it. |
| // this will hopefully be fixed by the LLVM 5 upgrade (#43370) |
| // ignore-asmjs |
| // ignore-emscripten |
| |
| // compile-flags: -Z lower_128bit_ops=yes -C debug_assertions=yes |
| |
| static TEST_SIGNED: i128 = const_signed(-222); |
| static TEST_UNSIGNED: u128 = const_unsigned(200); |
| |
| const fn const_signed(mut x: i128) -> i128 { |
| ((((((x + 1) - 2) * 3) / 4) % 5) << 6) >> 7 |
| } |
| |
| const fn const_unsigned(mut x: u128) -> u128 { |
| ((((((x + 1) - 2) * 3) / 4) % 5) << 6) >> 7 |
| } |
| |
| fn test_signed(mut x: i128) -> i128 { |
| x += 1; |
| x -= 2; |
| x *= 3; |
| x /= 4; |
| x %= 5; |
| x <<= 6; |
| x >>= 7; |
| x |
| } |
| |
| fn test_unsigned(mut x: u128) -> u128 { |
| x += 1; |
| x -= 2; |
| x *= 3; |
| x /= 4; |
| x %= 5; |
| x <<= 6; |
| x >>= 7; |
| x |
| } |
| |
| fn check(x: i128, y: u128) { |
| assert_eq!(test_signed(x), -1); |
| assert_eq!(const_signed(x), -1); |
| assert_eq!(TEST_SIGNED, -1); |
| assert_eq!(test_unsigned(y), 2); |
| assert_eq!(const_unsigned(y), 2); |
| assert_eq!(TEST_UNSIGNED, 2); |
| } |
| |
| fn main() { |
| check(-222, 200); |
| } |
| |
| // END RUST SOURCE |
| |
| // START rustc.const_signed.Lower128Bit.after.mir |
| // _8 = _1; |
| // _9 = const compiler_builtins::int::addsub::rust_i128_addo(move _8, const 1i128) -> bb10; |
| // ... |
| // _7 = move (_9.0: i128); |
| // ... |
| // _10 = const compiler_builtins::int::addsub::rust_i128_subo(move _7, const 2i128) -> bb11; |
| // ... |
| // _6 = move (_10.0: i128); |
| // ... |
| // _11 = const compiler_builtins::int::mul::rust_i128_mulo(move _6, const 3i128) -> bb12; |
| // ... |
| // _5 = move (_11.0: i128); |
| // ... |
| // _12 = Eq(const 4i128, const 0i128); |
| // assert(!move _12, "attempt to divide by zero") -> bb4; |
| // ... |
| // _13 = Eq(const 4i128, const -1i128); |
| // _14 = Eq(_5, const -170141183460469231731687303715884105728i128); |
| // _15 = BitAnd(move _13, move _14); |
| // assert(!move _15, "attempt to divide with overflow") -> bb5; |
| // ... |
| // _4 = const compiler_builtins::int::sdiv::rust_i128_div(move _5, const 4i128) -> bb13; |
| // ... |
| // _17 = Eq(const 5i128, const -1i128); |
| // _18 = Eq(_4, const -170141183460469231731687303715884105728i128); |
| // _19 = BitAnd(move _17, move _18); |
| // assert(!move _19, "attempt to calculate the remainder with overflow") -> bb7; |
| // ... |
| // _3 = const compiler_builtins::int::sdiv::rust_i128_rem(move _4, const 5i128) -> bb15; |
| // ... |
| // _2 = move (_20.0: i128); |
| // ... |
| // _23 = const 7i32 as u128 (Misc); |
| // _21 = const compiler_builtins::int::shift::rust_i128_shro(move _2, move _23) -> bb16; |
| // ... |
| // _0 = move (_21.0: i128); |
| // ... |
| // assert(!move (_9.1: bool), "attempt to add with overflow") -> bb1; |
| // ... |
| // assert(!move (_10.1: bool), "attempt to subtract with overflow") -> bb2; |
| // ... |
| // assert(!move (_11.1: bool), "attempt to multiply with overflow") -> bb3; |
| // ... |
| // _16 = Eq(const 5i128, const 0i128); |
| // assert(!move _16, "attempt to calculate the remainder with a divisor of zero") -> bb6; |
| // ... |
| // assert(!move (_20.1: bool), "attempt to shift left with overflow") -> bb8; |
| // ... |
| // _22 = const 6i32 as u128 (Misc); |
| // _20 = const compiler_builtins::int::shift::rust_i128_shlo(move _3, move _22) -> bb14; |
| // ... |
| // assert(!move (_21.1: bool), "attempt to shift right with overflow") -> bb9; |
| // END rustc.const_signed.Lower128Bit.after.mir |
| |
| // START rustc.const_unsigned.Lower128Bit.after.mir |
| // _8 = _1; |
| // _9 = const compiler_builtins::int::addsub::rust_u128_addo(move _8, const 1u128) -> bb8; |
| // ... |
| // _7 = move (_9.0: u128); |
| // ... |
| // _10 = const compiler_builtins::int::addsub::rust_u128_subo(move _7, const 2u128) -> bb9; |
| // ... |
| // _6 = move (_10.0: u128); |
| // ... |
| // _11 = const compiler_builtins::int::mul::rust_u128_mulo(move _6, const 3u128) -> bb10; |
| // ... |
| // _5 = move (_11.0: u128); |
| // ... |
| // _12 = Eq(const 4u128, const 0u128); |
| // assert(!move _12, "attempt to divide by zero") -> bb4; |
| // ... |
| // _4 = const compiler_builtins::int::udiv::rust_u128_div(move _5, const 4u128) -> bb11; |
| // ... |
| // _3 = const compiler_builtins::int::udiv::rust_u128_rem(move _4, const 5u128) -> bb13; |
| // ... |
| // _2 = move (_14.0: u128); |
| // ... |
| // _17 = const 7i32 as u128 (Misc); |
| // _15 = const compiler_builtins::int::shift::rust_u128_shro(move _2, move _17) -> bb14; |
| // ... |
| // _0 = move (_15.0: u128); |
| // ... |
| // assert(!move (_9.1: bool), "attempt to add with overflow") -> bb1; |
| // ... |
| // assert(!move (_10.1: bool), "attempt to subtract with overflow") -> bb2; |
| // ... |
| // assert(!move (_11.1: bool), "attempt to multiply with overflow") -> bb3; |
| // ... |
| // _13 = Eq(const 5u128, const 0u128); |
| // assert(!move _13, "attempt to calculate the remainder with a divisor of zero") -> bb5; |
| // ... |
| // assert(!move (_14.1: bool), "attempt to shift left with overflow") -> bb6; |
| // ... |
| // _16 = const 6i32 as u128 (Misc); |
| // _14 = const compiler_builtins::int::shift::rust_u128_shlo(move _3, move _16) -> bb12; |
| // ... |
| // assert(!move (_15.1: bool), "attempt to shift right with overflow") -> bb7; |
| // END rustc.const_unsigned.Lower128Bit.after.mir |
| |
| // START rustc.test_signed.Lower128Bit.after.mir |
| // _2 = const compiler_builtins::int::addsub::rust_i128_addo(_1, const 1i128) -> bb10; |
| // ... |
| // _1 = move (_2.0: i128); |
| // _3 = const compiler_builtins::int::addsub::rust_i128_subo(_1, const 2i128) -> bb11; |
| // ... |
| // _1 = move (_3.0: i128); |
| // _4 = const compiler_builtins::int::mul::rust_i128_mulo(_1, const 3i128) -> bb12; |
| // ... |
| // _1 = move (_4.0: i128); |
| // ... |
| // _1 = const compiler_builtins::int::sdiv::rust_i128_div(_1, const 4i128) -> bb13; |
| // ... |
| // _1 = const compiler_builtins::int::sdiv::rust_i128_rem(_1, const 5i128) -> bb15; |
| // ... |
| // _1 = move (_13.0: i128); |
| // ... |
| // _16 = const 7i32 as u128 (Misc); |
| // _14 = const compiler_builtins::int::shift::rust_i128_shro(_1, move _16) -> bb16; |
| // ... |
| // _1 = move (_14.0: i128); |
| // ... |
| // assert(!move (_2.1: bool), "attempt to add with overflow") -> bb1; |
| // ... |
| // assert(!move (_3.1: bool), "attempt to subtract with overflow") -> bb2; |
| // ... |
| // assert(!move (_4.1: bool), "attempt to multiply with overflow") -> bb3; |
| // ... |
| // assert(!move (_13.1: bool), "attempt to shift left with overflow") -> bb8; |
| // ... |
| // _15 = const 6i32 as u128 (Misc); |
| // _13 = const compiler_builtins::int::shift::rust_i128_shlo(_1, move _15) -> bb14; |
| // ... |
| // assert(!move (_14.1: bool), "attempt to shift right with overflow") -> bb9; |
| // END rustc.test_signed.Lower128Bit.after.mir |
| |
| // START rustc.test_unsigned.Lower128Bit.after.mir |
| // _2 = const compiler_builtins::int::addsub::rust_u128_addo(_1, const 1u128) -> bb8; |
| // ... |
| // _1 = move (_2.0: u128); |
| // _3 = const compiler_builtins::int::addsub::rust_u128_subo(_1, const 2u128) -> bb9; |
| // ... |
| // _1 = move (_3.0: u128); |
| // _4 = const compiler_builtins::int::mul::rust_u128_mulo(_1, const 3u128) -> bb10; |
| // ... |
| // _1 = move (_4.0: u128); |
| // ... |
| // _1 = const compiler_builtins::int::udiv::rust_u128_div(_1, const 4u128) -> bb11; |
| // ... |
| // _1 = const compiler_builtins::int::udiv::rust_u128_rem(_1, const 5u128) -> bb13; |
| // ... |
| // _1 = move (_7.0: u128); |
| // ... |
| // _10 = const 7i32 as u128 (Misc); |
| // _8 = const compiler_builtins::int::shift::rust_u128_shro(_1, move _10) -> bb14; |
| // ... |
| // _1 = move (_8.0: u128); |
| // ... |
| // assert(!move (_2.1: bool), "attempt to add with overflow") -> bb1; |
| // ... |
| // assert(!move (_3.1: bool), "attempt to subtract with overflow") -> bb2; |
| // ... |
| // assert(!move (_4.1: bool), "attempt to multiply with overflow") -> bb3; |
| // ... |
| // assert(!move (_7.1: bool), "attempt to shift left with overflow") -> bb6; |
| // ... |
| // _9 = const 6i32 as u128 (Misc); |
| // _7 = const compiler_builtins::int::shift::rust_u128_shlo(_1, move _9) -> bb12; |
| // ... |
| // assert(!move (_8.1: bool), "attempt to shift right with overflow") -> bb7; |
| // END rustc.test_unsigned.Lower128Bit.after.mir |