1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 // compile-flags: -Z lower_128bit_ops=yes -C debug_assertions=no -O
15 #![feature(min_const_fn)]
17 static TEST_SIGNED: i128 = const_signed(-222);
18 static TEST_UNSIGNED: u128 = const_unsigned(200);
20 const fn const_signed(mut x: i128) -> i128 {
21 ((((((x + 1) - 2) * 3) / 4) % 5) << 6) >> 7
24 const fn const_unsigned(mut x: u128) -> u128 {
25 ((((((x + 1) - 2) * 3) / 4) % 5) << 6) >> 7
28 fn test_signed(mut x: i128) -> i128 {
39 fn test_unsigned(mut x: u128) -> u128 {
50 fn check(x: i128, y: u128) {
51 assert_eq!(test_signed(x), -1);
52 assert_eq!(const_signed(x), -1);
53 assert_eq!(TEST_SIGNED, -1);
54 assert_eq!(test_unsigned(y), 2);
55 assert_eq!(const_unsigned(y), 2);
56 assert_eq!(TEST_UNSIGNED, 2);
65 // START rustc.const_signed.Lower128Bit.after.mir
66 // _7 = const compiler_builtins::int::addsub::rust_i128_add(move _8, const 1i128) -> bb7;
68 // _10 = Eq(const 4i128, const -1i128);
69 // _11 = Eq(_5, const -170141183460469231731687303715884105728i128);
70 // _12 = BitAnd(move _10, move _11);
71 // assert(!move _12, "attempt to divide with overflow") -> bb2;
73 // _4 = const compiler_builtins::int::sdiv::rust_i128_div(move _5, const 4i128) -> bb8;
75 // _14 = Eq(const 5i128, const -1i128);
76 // _15 = Eq(_4, const -170141183460469231731687303715884105728i128);
77 // _16 = BitAnd(move _14, move _15);
78 // assert(!move _16, "attempt to calculate the remainder with overflow") -> bb4;
80 // _3 = const compiler_builtins::int::sdiv::rust_i128_rem(move _4, const 5i128) -> bb11;
82 // _9 = Eq(const 4i128, const 0i128);
83 // assert(!move _9, "attempt to divide by zero") -> bb1;
85 // _5 = const compiler_builtins::int::mul::rust_i128_mul(move _6, const 3i128) -> bb5;
87 // _6 = const compiler_builtins::int::addsub::rust_i128_sub(move _7, const 2i128) -> bb6;
89 // _13 = Eq(const 5i128, const 0i128);
90 // assert(!move _13, "attempt to calculate the remainder with a divisor of zero") -> bb3;
92 // _17 = const 7i32 as u32 (Misc);
93 // _0 = const compiler_builtins::int::shift::rust_i128_shr(move _2, move _17) -> bb9;
95 // _18 = const 6i32 as u32 (Misc);
96 // _2 = const compiler_builtins::int::shift::rust_i128_shl(move _3, move _18) -> bb10;
97 // END rustc.const_signed.Lower128Bit.after.mir
99 // START rustc.const_unsigned.Lower128Bit.after.mir
101 // _7 = const compiler_builtins::int::addsub::rust_u128_add(move _8, const 1u128) -> bb5;
103 // _4 = const compiler_builtins::int::udiv::rust_u128_div(move _5, const 4u128) -> bb6;
105 // _3 = const compiler_builtins::int::udiv::rust_u128_rem(move _4, const 5u128) -> bb9;
107 // _9 = Eq(const 4u128, const 0u128);
108 // assert(!move _9, "attempt to divide by zero") -> bb1;
110 // _5 = const compiler_builtins::int::mul::rust_u128_mul(move _6, const 3u128) -> bb3;
112 // _6 = const compiler_builtins::int::addsub::rust_u128_sub(move _7, const 2u128) -> bb4;
114 // _10 = Eq(const 5u128, const 0u128);
115 // assert(!move _10, "attempt to calculate the remainder with a divisor of zero") -> bb2;
119 // _11 = const 7i32 as u32 (Misc);
120 // _0 = const compiler_builtins::int::shift::rust_u128_shr(move _2, move _11) -> bb7;
122 // _12 = const 6i32 as u32 (Misc);
123 // _2 = const compiler_builtins::int::shift::rust_u128_shl(move _3, move _12) -> bb8;
125 // END rustc.const_unsigned.Lower128Bit.after.mir
127 // START rustc.test_signed.Lower128Bit.after.mir
128 // _1 = const compiler_builtins::int::addsub::rust_i128_add(_1, const 1i128) -> bb7;
130 // _1 = const compiler_builtins::int::sdiv::rust_i128_div(_1, const 4i128) -> bb8;
132 // _1 = const compiler_builtins::int::sdiv::rust_i128_rem(_1, const 5i128) -> bb11;
134 // _1 = const compiler_builtins::int::mul::rust_i128_mul(_1, const 3i128) -> bb5;
136 // _1 = const compiler_builtins::int::addsub::rust_i128_sub(_1, const 2i128) -> bb6;
138 // _10 = const 7i32 as u32 (Misc);
139 // _1 = const compiler_builtins::int::shift::rust_i128_shr(_1, move _10) -> bb9;
141 // _11 = const 6i32 as u32 (Misc);
142 // _1 = const compiler_builtins::int::shift::rust_i128_shl(_1, move _11) -> bb10;
143 // END rustc.test_signed.Lower128Bit.after.mir
145 // START rustc.test_unsigned.Lower128Bit.after.mir
146 // _1 = const compiler_builtins::int::addsub::rust_u128_add(_1, const 1u128) -> bb5;
148 // _1 = const compiler_builtins::int::udiv::rust_u128_div(_1, const 4u128) -> bb6;
150 // _1 = const compiler_builtins::int::udiv::rust_u128_rem(_1, const 5u128) -> bb9;
152 // _1 = const compiler_builtins::int::mul::rust_u128_mul(_1, const 3u128) -> bb3;
154 // _1 = const compiler_builtins::int::addsub::rust_u128_sub(_1, const 2u128) -> bb4;
156 // _4 = const 7i32 as u32 (Misc);
157 // _1 = const compiler_builtins::int::shift::rust_u128_shr(_1, move _4) -> bb7;
159 // _5 = const 6i32 as u32 (Misc);
160 // _1 = const compiler_builtins::int::shift::rust_u128_shl(_1, move _5) -> bb8;
161 // END rustc.test_unsigned.Lower128Bit.after.mir