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