[vala] (38 commits) Created branch wip/effectfree

[Luca Bruno <lucabru src gnome org>]

The branch 'wip/effectfree' was created.

Summary of new commits:

  97d0f93... Emit left-handed side of assignment when it's a field or pa
  30c4e95... codegen: Use lvalue of the assignment when emitting array a
  f4dc638... codegen: Unset array_size_cvalue in load_variable
  2546bdd... Add get_defined_variables in PostfixExpression
  9e30b3a... Set parent_node of the expression of delete statements
  7dd12f7... Set parent_node of the postfix inner expression
  e55748e... Set lvalue to the inner expression of address-of expression
  f0fd934... Set lvalue to inner expression of method call that returns 
  78e4a25... Set lvalue to inner member access having type non-nullable 
  57ac1fb... codegen: Cleanup emit_temp_var
  184ddce... codegen: Add create_temp_value, load_temp_value and store_t
  4096f65... codegen: Use temporary variables when accessing a variable
  3c4cf0d... codegen: Use temporary variables when accessing a property
  4d57065... codegen: Make transform_value be effect-free
  84982dd... codegen: Make copy_value be effect-free
  892252b... codegen: Drop useless temporary variable in array creation
  e78a309... codegen: Drop useless temporary variable in simple assignme
  5a03128... codegen: Cleanup simple assignment
  e22369e... codegen: Drop useless temporary variables when storing a pr
  0e6187f... codegen: Drop useless temp variable when accessing base met
  06e56cb... codegen: Drop useless temporary variable in visit_cast_expr
  fb9575c... codegen: Drop useless temporary variable in visit_end_full_
  6c218c9... codegen: Simplify emit of postfix expression
  e95c4f9... codegen: Use create_temp_value in struct initializer
  13242d9... codegen: Use create_temp_value in visit_object_creation_exp
  17464bf... codegen: Use store_temp_value in visit_reference_transfer_e
  3d4d545... codegen: Use create_temp_value in visit_binary_expression
  80a6ae1... codegen: Use create_temp_value in handle_struct_argument
  25791b9... codegen: Use create_temp_value in try_cast_value_to_type
  550e909... codegen: Use create_temp_value in store_property
  53ecd76... codegen: Use create_temp_value in visit_string_switch_state
  5e83bea... codegen: Use store_temp_value in visit_return_statement
  6191be2... codegen: Replace temp_ref_vars with temp_ref_values using T
  aac8c26... codegen: Use create_temp_value in copy_value of array modul
  a2f1ced... codegen: Use create_temp_value in copy_value
  cf3fc99... codegen: Use create_temp_value in try_cast_variant_to_type
  e443704... codegen: Add lvalue field to GLibValue
  9c7a10f... codegen: Use GLibValue.lvalue when taking the address of an