cairo-lang-lowering 2.4.1

Cairo lowering phase.
Documentation 
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//! > 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:
  (v3: core::felt252, v2: core::felt252) <- test::foo(v0, v1)
End:
  Return(v3, v1)

//! > after
Parameters: v0: core::felt252, v1: core::felt252

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

//! > Test inlining a function where the 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) <- 1u
End:
  Goto(blk1, {v3 -> v1})

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

//! > lowering_diagnostics