cairo-lang-lowering 2.9.0

//! > Test inlining diagnostics for a recursive function.

//! > test_runner_name
test_function_inlining

//! > function
#[inline(always)]
fn foo(ref a: felt252, b: felt252) -> felt252 {
    foo(ref a, b);
    b
}

//! > function_name
foo

//! > module_code

//! > semantic_diagnostics

//! > lowering_diagnostics
error: Cannot inline a function that might call itself.
 --> lib.cairo:1:1
#[inline(always)]
^***************^

//! > before
Parameters: v0: core::felt252, v1: core::felt252
blk0 (root):
Statements:
End:
  Match(match core::gas::withdraw_gas() {
    Option::Some => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
  (v9: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- test::foo(v0, v1)
End:
  Match(match_enum(v9) {
    PanicResult::Ok(v10) => blk4,
    PanicResult::Err(v13) => blk5,
  })

blk2:
Statements:
  (v4: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v5: core::felt252) <- 375233589013918064796019
  (v7: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v4, v5)
  (v6: core::panics::Panic) <- struct_construct()
  (v8: (core::panics::Panic, core::array::Array::<core::felt252>)) <- struct_construct(v6, v7)
  (v14: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Err(v8)
End:
  Return(v14)

blk3:
Statements:
  (v15: (core::felt252, core::felt252)) <- struct_construct(v3, v1)
  (v16: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Ok(v15)
End:
  Return(v16)

blk4:
Statements:
  (v11: core::felt252, v12: core::felt252) <- struct_destructure(v10)
End:
  Goto(blk3, {v11 -> v3, v12 -> v2})

blk5:
Statements:
  (v17: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Err(v13)
End:
  Return(v17)

//! > after
Parameters: v0: core::felt252, v1: core::felt252
blk0 (root):
Statements:
End:
  Match(match core::gas::withdraw_gas() {
    Option::Some => blk1,
    Option::None => blk2,
  })

blk1:
Statements:
  (v9: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- test::foo(v0, v1)
End:
  Match(match_enum(v9) {
    PanicResult::Ok(v10) => blk4,
    PanicResult::Err(v13) => blk5,
  })

blk2:
Statements:
  (v4: core::array::Array::<core::felt252>) <- core::array::array_new::<core::felt252>()
  (v5: core::felt252) <- 375233589013918064796019
  (v7: core::array::Array::<core::felt252>) <- core::array::array_append::<core::felt252>(v4, v5)
  (v6: core::panics::Panic) <- struct_construct()
  (v8: (core::panics::Panic, core::array::Array::<core::felt252>)) <- struct_construct(v6, v7)
  (v14: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Err(v8)
End:
  Return(v14)

blk3:
Statements:
  (v15: (core::felt252, core::felt252)) <- struct_construct(v3, v1)
  (v16: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Ok(v15)
End:
  Return(v16)

blk4:
Statements:
  (v11: core::felt252, v12: core::felt252) <- struct_destructure(v10)
End:
  Goto(blk3, {v11 -> v3, v12 -> v2})

blk5:
Statements:
  (v17: core::panics::PanicResult::<(core::felt252, core::felt252)>) <- PanicResult::Err(v13)
End:
  Return(v17)

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

//! > Test inlining a function where the last block does not return.

//! > test_runner_name
test_function_inlining

//! > function_name
foo

//! > function
fn foo(n: felt252) -> felt252 {
    bar(n)
}

//! > module_code
#[inline(always)]
fn bar(n: felt252) -> felt252 {
    if n == 0 {
        return 1;
    } else {
        return 1;
    }
}

//! > semantic_diagnostics

//! > before
Parameters: v0: core::felt252
blk0 (root):
Statements:
  (v1: core::felt252) <- test::bar(v0)
End:
  Return(v1)

//! > after
Parameters: v0: core::felt252
blk0 (root):
Statements:
End:
  Goto(blk2, {})

blk1:
Statements:
End:
  Return(v1)

blk2:
Statements:
End:
  Match(match core::felt252_is_zero(v0) {
    IsZeroResult::Zero => blk3,
    IsZeroResult::NonZero(v2) => blk4,
  })

blk3:
Statements:
  (v3: core::felt252) <- 1
End:
  Goto(blk1, {v3 -> v1})

blk4:
Statements:
  (v4: core::felt252) <- 1
End:
  Goto(blk1, {v4 -> v1})

//! > lowering_diagnostics