cairo-lang-lowering 2.9.0

//! > Check that literals are moved to the right arm.

//! > test_runner_name
test_reorder_statements

//! > function
fn foo() -> felt252 {
    let opt = get_option();

    let _unused = 17;
    let _unused2 = ();

    let one = 1;
    let two = 2;
    let three = 3;

    match opt {
        Option::Some(_) => one + two,
        Option::None => {
            let four = 4;
            match opt {
                Option::Some(_) => three + four,
                Option::None => one,
            }
        },
    }
}

//! > function_name
foo

//! > module_code
extern fn get_option() -> Option<u16> nopanic;

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters:
blk0 (root):
Statements:
End:
  Match(match test::get_option() {
    Option::Some(v0) => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
  (v1: core::option::Option::<core::integer::u16>) <- Option::Some(v0)
End:
  Goto(blk3, {v1 -> v2})

blk2:
Statements:
  (v3: ()) <- struct_construct()
  (v4: core::option::Option::<core::integer::u16>) <- Option::None(v3)
End:
  Goto(blk3, {v4 -> v2})

blk3:
Statements:
  (v5: core::felt252) <- 17
  (v6: ()) <- struct_construct()
  (v7: core::felt252) <- 1
  (v8: core::felt252) <- 2
  (v9: core::felt252) <- 3
End:
  Match(match_enum(v2) {
    Option::Some(v10) => blk4,
    Option::None(v11) => blk5,
  })

blk4:
Statements:
  (v12: core::felt252) <- core::felt252_add(v7, v8)
End:
  Goto(blk9, {v12 -> v13})

blk5:
Statements:
  (v14: core::felt252) <- 4
End:
  Match(match_enum(v2) {
    Option::Some(v15) => blk6,
    Option::None(v16) => blk7,
  })

blk6:
Statements:
  (v17: core::felt252) <- core::felt252_add(v9, v14)
End:
  Goto(blk8, {v17 -> v18})

blk7:
Statements:
End:
  Goto(blk8, {v7 -> v18})

blk8:
Statements:
End:
  Goto(blk9, {v18 -> v13})

blk9:
Statements:
End:
  Return(v13)

//! > after
Parameters:
blk0 (root):
Statements:
End:
  Match(match test::get_option() {
    Option::Some(v0) => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
  (v1: core::option::Option::<core::integer::u16>) <- Option::Some(v0)
End:
  Goto(blk3, {v1 -> v2})

blk2:
Statements:
  (v3: ()) <- struct_construct()
  (v4: core::option::Option::<core::integer::u16>) <- Option::None(v3)
End:
  Goto(blk3, {v4 -> v2})

blk3:
Statements:
  (v7: core::felt252) <- 1
End:
  Match(match_enum(v2) {
    Option::Some(v10) => blk4,
    Option::None(v11) => blk5,
  })

blk4:
Statements:
  (v8: core::felt252) <- 2
  (v12: core::felt252) <- core::felt252_add(v7, v8)
End:
  Goto(blk9, {v12 -> v13})

blk5:
Statements:
End:
  Match(match_enum(v2) {
    Option::Some(v15) => blk6,
    Option::None(v16) => blk7,
  })

blk6:
Statements:
  (v9: core::felt252) <- 3
  (v14: core::felt252) <- 4
  (v17: core::felt252) <- core::felt252_add(v9, v14)
End:
  Goto(blk8, {v17 -> v18})

blk7:
Statements:
End:
  Goto(blk8, {v7 -> v18})

blk8:
Statements:
End:
  Goto(blk9, {v18 -> v13})

blk9:
Statements:
End:
  Return(v13)

//! > ==========================================================================

//! > Check that not statements are moved to the right arm or removed.

//! > test_runner_name
test_reorder_statements

//! > function
fn foo() {
    let a = true;

    let b = !a;
    !!a;

    match get_option() {
        Option::Some(_) => a,
        Option::None => false ^ b,
    };
}

//! > function_name
foo

//! > module_code
extern fn get_option() -> Option<u16> nopanic;

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters:
blk0 (root):
Statements:
  (v0: ()) <- struct_construct()
  (v1: core::bool) <- bool::True(v0)
  (v2: core::bool) <- core::bool_not_impl(v1)
  (v3: core::bool) <- core::bool_not_impl(v1)
  (v4: core::bool) <- core::bool_not_impl(v3)
End:
  Match(match test::get_option() {
    Option::Some(v5) => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
End:
  Goto(blk3, {})

blk2:
Statements:
  (v6: ()) <- struct_construct()
  (v7: core::bool) <- bool::False(v6)
  (v8: core::bool) <- core::bool_xor_impl(v7, v2)
End:
  Goto(blk3, {})

blk3:
Statements:
  (v9: ()) <- struct_construct()
End:
  Return(v9)

//! > after
Parameters:
blk0 (root):
Statements:
End:
  Match(match test::get_option() {
    Option::Some(v5) => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
End:
  Goto(blk3, {})

blk2:
Statements:
  (v0: ()) <- struct_construct()
  (v1: core::bool) <- bool::True(v0)
  (v2: core::bool) <- core::bool_not_impl(v1)
  (v6: ()) <- struct_construct()
  (v7: core::bool) <- bool::False(v6)
  (v8: core::bool) <- core::bool_xor_impl(v7, v2)
End:
  Goto(blk3, {})

blk3:
Statements:
  (v9: ()) <- struct_construct()
End:
  Return(v9)

//! > ==========================================================================

//! > Test non-droppable struct

//! > test_runner_name
test_reorder_statements

//! > function
fn foo(a: felt252) {
    let b = NonDupStruct { a };
    let NonDupStruct { a: _ } = b;
}

//! > function_name
foo

//! > module_code
struct NonDupStruct {
    a: felt252,
}

//! > semantic_diagnostics

//! > lowering_diagnostics

//! > before
Parameters: v0: core::felt252
blk0 (root):
Statements:
  (v1: test::NonDupStruct) <- struct_construct(v0)
  (v2: core::felt252) <- struct_destructure(v1)
  (v3: ()) <- struct_construct()
End:
  Return(v3)

//! > after
Parameters: v0: core::felt252
blk0 (root):
Statements:
  (v1: test::NonDupStruct) <- struct_construct(v0)
  (v2: core::felt252) <- struct_destructure(v1)
  (v3: ()) <- struct_construct()
End:
  Return(v3)