Decide allocator kind to codegen. If Some(_)
this will be the same as
tcx.allocator_kind
, but it may be None
in more cases (e.g. if using
allocator definitions from a dylib dependency).
Returns rhs
sufficiently masked, truncated, and/or extended so that it can be used to shift
lhs
: it has the same size as lhs
, and the value, when interpreted unsigned (no matter its
type), will not exceed the size of lhs
.
Coerces src
to dst_ty
which is guaranteed to be a dyn*
type.
Coerces src
, which is a reference to a value of type src_ty
,
to a value of type dst_ty
, and stores the result in dst
.
This function returns all of the debugger visualizers specified for the
current crate as well as all upstream crates transitively that match the
visualizer_type
specified.
Obtain the argc
and argv
values to pass to the rust start function.
Returns whether a call from the current crate to the
Instance
would produce a call
from
compiler_builtins
to a symbol the linker must resolve.
Creates the main
function which will initialize the rust runtime and call
users main function.
Coerces src
to dst_ty
. src_ty
must be a pointer.
Retrieves the information we are losing (making dynamic) in an unsizing
adjustment.
Returns true
if this session’s target will use SEH-based unwinding.
Returns true
if this session’s target requires the new exception
handling LLVM IR instructions (catchpad / cleanuppad / … instead
of landingpad)