mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 03:25:55 +00:00
47 lines
1.0 KiB
Rust
47 lines
1.0 KiB
Rust
|
//@ unit-test: GVN
|
||
|
|
|
||
|
|
#![feature(custom_mir, core_intrinsics)]
|
||
|
|
extern crate core;
|
||
|
|
use core::intrinsics::mir::*;
|
||
|
|
|
||
|
|
#[custom_mir(dialect = "runtime", phase = "initial")]
|
||
|
|
fn fn0() {
|
||
|
|
// CHECK-LABEL: fn fn0(
|
||
|
|
mir! {
|
||
|
|
let a: usize;
|
||
|
|
let b: [u128; 6];
|
||
|
|
let c: ([u128; 6],);
|
||
|
|
let d: ([u128; 6],);
|
||
|
|
let x: ();
|
||
|
|
{
|
||
|
|
// CHECK: bb0: {
|
||
|
|
// CHECK-NEXT: _1 = const 1_usize;
|
||
|
|
// CHECK-NEXT: _2 = [const 42_u128; 6];
|
||
|
|
// CHECK-NEXT: _2[1 of 2] = const 1_u128;
|
||
|
|
// CHECK-NEXT: _3 = (_2,);
|
||
|
|
// CHECK-NEXT: _4 = _3;
|
||
|
|
// CHECK-NEXT: _5 = fn1((_3.0: [u128; 6]), _3)
|
||
|
|
a = 1_usize;
|
||
|
|
b = [42; 6];
|
||
|
|
b[a] = 1;
|
||
|
|
c = (b,);
|
||
|
|
d = c;
|
||
|
|
Call(x = fn1(Move(c.0), d), ReturnTo(bb1), UnwindUnreachable())
|
||
|
|
}
|
||
|
|
bb1 = {
|
||
|
|
Return()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[inline(never)]
|
||
|
|
fn fn1(a: [u128; 6], mut b: ([u128; 6],)) {
|
||
|
|
b.0 = [0; 6];
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
fn0();
|
||
|
|
}
|
||
|
|
|
||
|
|
// EMIT_MIR gvn_copy_moves.fn0.GVN.diff
|