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|
- // MIR for `foo` before MatchBranchSimplification
+ // MIR for `foo` after MatchBranchSimplification
fn foo(_1: [u8; 16]) -> Option<[u8; 4]> {
debug bytes => _1;
let mut _0: std::option::Option<[u8; 4]>;
let _2: [u32; 4];
let mut _3: [u8; 16];
let mut _5: [u8; 4];
let mut _6: u32;
scope 1 {
debug dwords => _2;
scope 2 {
debug ip => _4;
let _4: u32;
}
}
bb0: {
StorageLive(_2);
StorageLive(_3);
_3 = copy _1;
_2 = move _3 as [u32; 4] (Transmute);
StorageDead(_3);
switchInt(copy _2[0 of 4]) -> [0: bb1, otherwise: bb4];
}
bb1: {
switchInt(copy _2[1 of 4]) -> [0: bb2, otherwise: bb4];
}
bb2: {
switchInt(copy _2[2 of 4]) -> [0: bb3, 4294901760: bb3, otherwise: bb4];
}
bb3: {
StorageLive(_4);
_4 = copy _2[3 of 4];
StorageLive(_5);
StorageLive(_6);
_6 = copy _4;
_5 = move _6 as [u8; 4] (Transmute);
StorageDead(_6);
_0 = Option::<[u8; 4]>::Some(move _5);
StorageDead(_5);
StorageDead(_4);
goto -> bb5;
}
bb4: {
_0 = Option::<[u8; 4]>::None;
goto -> bb5;
}
bb5: {
StorageDead(_2);
return;
}
}
|
