mirror of https://github.com/rust-lang/rust
66 lines
1.3 KiB
Rust
66 lines
1.3 KiB
Rust
// MIR for `foo` after PreCodegen
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fn foo(_1: Option<String>) -> i32 {
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debug s => _1;
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let mut _0: i32;
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let mut _2: bool;
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let mut _3: isize;
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let mut _4: &std::string::String;
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let mut _5: &str;
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let mut _6: bool;
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let _7: std::option::Option<std::string::String>;
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scope 1 {
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debug s => _7;
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}
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bb0: {
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_2 = const false;
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_2 = const true;
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_3 = discriminant(_1);
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switchInt(move _3) -> [1: bb1, otherwise: bb5];
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}
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bb1: {
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_4 = &((_1 as Some).0: std::string::String);
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_5 = <String as Deref>::deref(move _4) -> [return: bb2, unwind unreachable];
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}
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bb2: {
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_6 = <str as PartialEq>::eq(copy _5, const "a") -> [return: bb3, unwind unreachable];
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}
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bb3: {
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switchInt(move _6) -> [0: bb5, otherwise: bb4];
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}
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bb4: {
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_0 = const 1234_i32;
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goto -> bb7;
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}
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bb5: {
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StorageLive(_7);
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_2 = const false;
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_7 = move _1;
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_0 = const 4321_i32;
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drop(_7) -> [return: bb6, unwind unreachable];
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}
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bb6: {
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StorageDead(_7);
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goto -> bb7;
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}
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bb7: {
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switchInt(copy _2) -> [0: bb9, otherwise: bb8];
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}
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bb8: {
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drop(_1) -> [return: bb9, unwind unreachable];
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}
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bb9: {
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return;
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}
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}
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