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// unit-test: SimplifyLocals
#![feature(box_syntax)]
#![feature(thread_local)]
#[derive(Copy, Clone)]
enum E {
A,
B,
}
// EMIT_MIR simplify_locals.c.SimplifyLocals.diff
fn c() {
let bytes = [0u8; 10];
// Unused cast
let _: &[u8] = &bytes;
}
// EMIT_MIR simplify_locals.d1.SimplifyLocals.diff
fn d1() {
// Unused set discriminant
let _ = E::A;
}
// EMIT_MIR simplify_locals.d2.SimplifyLocals.diff
fn d2() {
// Unused set discriminant
{(10, E::A)}.1 = E::B;
}
// EMIT_MIR simplify_locals.r.SimplifyLocals.diff
fn r() {
let mut a = 1;
// Unused references
let _ = &a;
let _ = &mut a;
}
#[thread_local] static mut X: u32 = 0;
// EMIT_MIR simplify_locals.t1.SimplifyLocals.diff
fn t1() {
// Unused thread local
unsafe { X };
}
// EMIT_MIR simplify_locals.t2.SimplifyLocals.diff
fn t2() {
// Unused thread local
unsafe { &mut X };
}
// EMIT_MIR simplify_locals.t3.SimplifyLocals.diff
fn t3() {
// Unused thread local
unsafe { *&mut X };
}
// EMIT_MIR simplify_locals.t4.SimplifyLocals.diff
fn t4() -> u32 {
// Used thread local
unsafe { X + 1 }
}
// EMIT_MIR simplify_locals.expose_addr.SimplifyLocals.diff
fn expose_addr(p: *const usize) {
// Used pointer to address cast. Has a side effect of exposing the provenance.
p as usize;
}
fn main() {
c();
d1();
d2();
r();
t1();
t2();
t3();
t4();
expose_addr(&0);
}
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