Enum cranelift_codegen::ir::ArgumentLoc [−][src]
Function argument location.
The ABI specifies how arguments are passed to a function, and where return values appear after
the call. Just like a ValueLoc
, function arguments can be passed in registers or on the
stack.
Function arguments on the stack are accessed differently for the incoming arguments to the current function and the outgoing arguments to a called external function. For this reason, the location of stack arguments is described as an offset into the array of function arguments on the stack.
An ArgumentLoc
can be translated to a ValueLoc
only when we know if we're talking about an
incoming argument or an outgoing argument.
- For stack arguments, different
StackSlot
entities are used to represent incoming and outgoing arguments. - For register arguments, there is usually no difference, but if we ever add support for a register-window ISA like SPARC, register arguments would also need to be translated.
Variants
Unassigned
This argument has not been assigned to a location yet.
Reg(RegUnit)
Argument is passed in a register.
Stack(i32)
Argument is passed on the stack, at the given byte offset into the argument array.
Methods
impl ArgumentLoc
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impl ArgumentLoc
pub fn is_assigned(&self) -> bool
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pub fn is_assigned(&self) -> bool
Is this an assigned location? (That is, not Unassigned
).
pub fn is_reg(&self) -> bool
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pub fn is_reg(&self) -> bool
Is this a register location?
pub fn is_stack(&self) -> bool
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pub fn is_stack(&self) -> bool
Is this a stack location?
pub fn display<'a, R: Into<Option<&'a RegInfo>>>(
self,
regs: R
) -> DisplayArgumentLoc<'a>
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pub fn display<'a, R: Into<Option<&'a RegInfo>>>(
self,
regs: R
) -> DisplayArgumentLoc<'a>
Return an object that can display this argument location, using the register info from the target ISA.
Trait Implementations
impl Copy for ArgumentLoc
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impl Copy for ArgumentLoc
impl Clone for ArgumentLoc
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impl Clone for ArgumentLoc
fn clone(&self) -> ArgumentLoc
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fn clone(&self) -> ArgumentLoc
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Debug for ArgumentLoc
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impl Debug for ArgumentLoc
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Eq for ArgumentLoc
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impl Eq for ArgumentLoc
impl PartialEq for ArgumentLoc
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impl PartialEq for ArgumentLoc
fn eq(&self, other: &ArgumentLoc) -> bool
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fn eq(&self, other: &ArgumentLoc) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &ArgumentLoc) -> bool
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fn ne(&self, other: &ArgumentLoc) -> bool
This method tests for !=
.
impl Hash for ArgumentLoc
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impl Hash for ArgumentLoc
fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Default for ArgumentLoc
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impl Default for ArgumentLoc
Auto Trait Implementations
impl Send for ArgumentLoc
impl Send for ArgumentLoc
impl Sync for ArgumentLoc
impl Sync for ArgumentLoc