- // MIR for `array_len` before InstCombine + // MIR for `array_len` after InstCombine fn array_len(_1: &[u8; N]) -> usize { debug arr => _1; // in scope 0 at $DIR/lower_array_len.rs:30:34: 30:37 let mut _0: usize; // return place in scope 0 at $DIR/lower_array_len.rs:30:52: 30:57 let mut _2: &[u8]; // in scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 let mut _3: &[u8; N]; // in scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 let mut _4: &[u8; N]; // in scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 bb0: { StorageLive(_2); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 StorageLive(_3); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 - _3 = &(*_1); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 + _3 = _1; // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 StorageLive(_4); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 _4 = _3; // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 _2 = move _3 as &[u8] (Pointer(Unsize)); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 StorageDead(_3); // scope 0 at $DIR/lower_array_len.rs:31:7: 31:8 - _0 = Len((*_4)); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 + _0 = const N; // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 StorageDead(_4); // scope 0 at $DIR/lower_array_len.rs:31:5: 31:14 StorageDead(_2); // scope 0 at $DIR/lower_array_len.rs:31:13: 31:14 return; // scope 0 at $DIR/lower_array_len.rs:32:2: 32:2 } }