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Auto merge of #46290 - scottmcm:i128-from-compiler-builtins, r=nagisa
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Update compiler-builtins and use it in the 128-bit lowering MIR test

This picks up the lang item implementations from rust-lang/compiler-builtins#210

cc #45676 @est31 @nagisa
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@bors
bors committed Dec 3, 2017
2 parents 7e25139 + c0654ce commit 0bae745
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Showing 3 changed files with 43 additions and 94 deletions.
2 changes: 1 addition & 1 deletion src/libcompiler_builtins
Submodule libcompiler_builtins updated from 02b373 to 18feac
68 changes: 21 additions & 47 deletions src/test/mir-opt/lower_128bit_debug_test.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,40 +8,14 @@
// 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 -C debug_assertions=yes

#![feature(i128_type)]
#![feature(lang_items)]

#[lang="i128_div"]
fn i128_div(_x: i128, _y: i128) -> i128 { 3 }
#[lang="u128_div"]
fn u128_div(_x: u128, _y: u128) -> u128 { 4 }
#[lang="i128_rem"]
fn i128_rem(_x: i128, _y: i128) -> i128 { 5 }
#[lang="u128_rem"]
fn u128_rem(_x: u128, _y: u128) -> u128 { 6 }

#[lang="i128_addo"]
fn i128_addo(_x: i128, _y: i128) -> (i128, bool) { (0, false) }
#[lang="u128_addo"]
fn u128_addo(_x: u128, _y: u128) -> (u128, bool) { (1, false) }
#[lang="i128_subo"]
fn i128_subo(_x: i128, _y: i128) -> (i128, bool) { (2, false) }
#[lang="u128_subo"]
fn u128_subo(_x: u128, _y: u128) -> (u128, bool) { (3, false) }
#[lang="i128_mulo"]
fn i128_mulo(_x: i128, _y: i128) -> (i128, bool) { (4, false) }
#[lang="u128_mulo"]
fn u128_mulo(_x: u128, _y: u128) -> (u128, bool) { (5, false) }
#[lang="i128_shlo"]
fn i128_shlo(_x: i128, _y: u128) -> (i128, bool) { (6, false) }
#[lang="u128_shlo"]
fn u128_shlo(_x: u128, _y: u128) -> (u128, bool) { (6, false) }
#[lang="i128_shro"]
fn i128_shro(_x: i128, _y: u128) -> (i128, bool) { (7, false) }
#[lang="u128_shro"]
fn u128_shro(_x: u128, _y: u128) -> (u128, bool) { (8, false) }

fn test_signed(mut x: i128) -> i128 {
x += 1;
Expand All @@ -66,31 +40,31 @@ fn test_unsigned(mut x: u128) -> u128 {
}

fn main() {
test_signed(-200);
test_unsigned(200);
assert_eq!(test_signed(-222), -1);
assert_eq!(test_unsigned(200), 2);
}

// END RUST SOURCE

// START rustc.test_signed.Lower128Bit.after.mir
// _2 = const i128_addo(_1, const 1i128) -> bb10;
// _2 = const compiler_builtins::int::addsub::rust_i128_addo(_1, const 1i128) -> bb10;
// ...
// _1 = move (_2.0: i128);
// _3 = const i128_subo(_1, const 2i128) -> bb11;
// _3 = const compiler_builtins::int::addsub::rust_i128_subo(_1, const 2i128) -> bb11;
// ...
// _1 = move (_3.0: i128);
// _4 = const i128_mulo(_1, const 3i128) -> bb12;
// _4 = const compiler_builtins::int::mul::rust_i128_mulo(_1, const 3i128) -> bb12;
// ...
// _1 = move (_4.0: i128);
// ...
// _1 = const i128_div(_1, const 4i128) -> bb13;
// _1 = const compiler_builtins::int::sdiv::rust_i128_div(_1, const 4i128) -> bb13;
// ...
// _1 = const i128_rem(_1, const 5i128) -> bb15;
// _1 = const compiler_builtins::int::sdiv::rust_i128_rem(_1, const 5i128) -> bb15;
// ...
// _1 = move (_13.0: i128);
// ...
// _17 = const 7i32 as u128 (Misc);
// _14 = const i128_shro(_1, move _17) -> bb16;
// _14 = const compiler_builtins::int::shift::rust_i128_shro(_1, move _17) -> bb16;
// ...
// _1 = move (_14.0: i128);
// ...
Expand All @@ -103,30 +77,30 @@ fn main() {
// assert(!move (_13.1: bool), "attempt to shift left with overflow") -> bb8;
// ...
// _16 = const 6i32 as u128 (Misc);
// _13 = const i128_shlo(_1, move _16) -> bb14;
// _13 = const compiler_builtins::int::shift::rust_i128_shlo(_1, move _16) -> 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 u128_addo(_1, const 1u128) -> bb8;
// _2 = const compiler_builtins::int::addsub::rust_u128_addo(_1, const 1u128) -> bb8;
// ...
// _1 = move (_2.0: u128);
// _3 = const u128_subo(_1, const 2u128) -> bb9;
// _3 = const compiler_builtins::int::addsub::rust_u128_subo(_1, const 2u128) -> bb9;
// ...
// _1 = move (_3.0: u128);
// _4 = const u128_mulo(_1, const 3u128) -> bb10;
// _4 = const compiler_builtins::int::mul::rust_u128_mulo(_1, const 3u128) -> bb10;
// ...
// _1 = move (_4.0: u128);
// ...
// _1 = const u128_div(_1, const 4u128) -> bb11;
// _1 = const compiler_builtins::int::udiv::rust_u128_div(_1, const 4u128) -> bb11;
// ...
// _1 = const u128_rem(_1, const 5u128) -> bb13;
// _1 = const compiler_builtins::int::udiv::rust_u128_rem(_1, const 5u128) -> bb13;
// ...
// _1 = move (_7.0: u128);
// ...
// _11 = const 7i32 as u128 (Misc);
// _8 = const u128_shro(_1, move _11) -> bb14;
// _8 = const compiler_builtins::int::shift::rust_u128_shro(_1, move _11) -> bb14;
// ...
// _1 = move (_8.0: u128);
// ...
Expand All @@ -139,7 +113,7 @@ fn main() {
// assert(!move (_7.1: bool), "attempt to shift left with overflow") -> bb6;
// ...
// _10 = const 6i32 as u128 (Misc);
// _7 = const u128_shlo(_1, move _10) -> bb12;
// _7 = const compiler_builtins::int::shift::rust_u128_shlo(_1, move _10) -> bb12;
// ...
// assert(!move (_8.1: bool), "attempt to shift right with overflow") -> bb7;
// END rustc.test_unsigned.Lower128Bit.after.mir
67 changes: 21 additions & 46 deletions src/test/mir-opt/lower_128bit_test.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -8,39 +8,14 @@
// 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 -C debug_assertions=no

#![feature(i128_type)]
#![feature(lang_items)]

#[lang="i128_add"]
fn i128_add(_x: i128, _y: i128) -> i128 { 0 }
#[lang="u128_add"]
fn u128_add(_x: u128, _y: u128) -> u128 { 0 }
#[lang="i128_sub"]
fn i128_sub(_x: i128, _y: i128) -> i128 { 1 }
#[lang="u128_sub"]
fn u128_sub(_x: u128, _y: u128) -> u128 { 1 }
#[lang="i128_mul"]
fn i128_mul(_x: i128, _y: i128) -> i128 { 2 }
#[lang="u128_mul"]
fn u128_mul(_x: u128, _y: u128) -> u128 { 2 }
#[lang="i128_div"]
fn i128_div(_x: i128, _y: i128) -> i128 { 3 }
#[lang="u128_div"]
fn u128_div(_x: u128, _y: u128) -> u128 { 4 }
#[lang="i128_rem"]
fn i128_rem(_x: i128, _y: i128) -> i128 { 5 }
#[lang="u128_rem"]
fn u128_rem(_x: u128, _y: u128) -> u128 { 6 }
#[lang="i128_shl"]
fn i128_shl(_x: i128, _y: u32) -> i128 { 7 }
#[lang="u128_shl"]
fn u128_shl(_x: u128, _y: u32) -> u128 { 7 }
#[lang="i128_shr"]
fn i128_shr(_x: i128, _y: u32) -> i128 { 8 }
#[lang="u128_shr"]
fn u128_shr(_x: u128, _y: u32) -> u128 { 9 }

fn test_signed(mut x: i128) -> i128 {
x += 1;
Expand All @@ -65,44 +40,44 @@ fn test_unsigned(mut x: u128) -> u128 {
}

fn main() {
test_signed(-200);
test_unsigned(200);
assert_eq!(test_signed(-222), -1);
assert_eq!(test_unsigned(200), 2);
}

// END RUST SOURCE

// START rustc.test_signed.Lower128Bit.after.mir
// _1 = const i128_add(_1, const 1i128) -> bb7;
// _1 = const compiler_builtins::int::addsub::rust_i128_add(_1, const 1i128) -> bb7;
// ...
// _1 = const i128_div(_1, const 4i128) -> bb8;
// _1 = const compiler_builtins::int::sdiv::rust_i128_div(_1, const 4i128) -> bb8;
// ...
// _1 = const i128_rem(_1, const 5i128) -> bb11;
// _1 = const compiler_builtins::int::sdiv::rust_i128_rem(_1, const 5i128) -> bb11;
// ...
// _1 = const i128_mul(_1, const 3i128) -> bb5;
// _1 = const compiler_builtins::int::mul::rust_i128_mul(_1, const 3i128) -> bb5;
// ...
// _1 = const i128_sub(_1, const 2i128) -> bb6;
// _1 = const compiler_builtins::int::addsub::rust_i128_sub(_1, const 2i128) -> bb6;
// ...
// _11 = const 7i32 as u32 (Misc);
// _1 = const i128_shr(_1, move _11) -> bb9;
// _1 = const compiler_builtins::int::shift::rust_i128_shr(_1, move _11) -> bb9;
// ...
// _12 = const 6i32 as u32 (Misc);
// _1 = const i128_shl(_1, move _12) -> bb10;
// _1 = const compiler_builtins::int::shift::rust_i128_shl(_1, move _12) -> bb10;
// END rustc.test_signed.Lower128Bit.after.mir

// START rustc.test_unsigned.Lower128Bit.after.mir
// _1 = const u128_add(_1, const 1u128) -> bb5;
// _1 = const compiler_builtins::int::addsub::rust_u128_add(_1, const 1u128) -> bb5;
// ...
// _1 = const u128_div(_1, const 4u128) -> bb6;
// _1 = const compiler_builtins::int::udiv::rust_u128_div(_1, const 4u128) -> bb6;
// ...
// _1 = const u128_rem(_1, const 5u128) -> bb9;
// _1 = const compiler_builtins::int::udiv::rust_u128_rem(_1, const 5u128) -> bb9;
// ...
// _1 = const u128_mul(_1, const 3u128) -> bb3;
// _1 = const compiler_builtins::int::mul::rust_u128_mul(_1, const 3u128) -> bb3;
// ...
// _1 = const u128_sub(_1, const 2u128) -> bb4;
// _1 = const compiler_builtins::int::addsub::rust_u128_sub(_1, const 2u128) -> bb4;
// ...
// _5 = const 7i32 as u32 (Misc);
// _1 = const u128_shr(_1, move _5) -> bb7;
// _1 = const compiler_builtins::int::shift::rust_u128_shr(_1, move _5) -> bb7;
// ...
// _6 = const 6i32 as u32 (Misc);
// _1 = const u128_shl(_1, move _6) -> bb8;
// _1 = const compiler_builtins::int::shift::rust_u128_shl(_1, move _6) -> bb8;
// END rustc.test_unsigned.Lower128Bit.after.mir

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