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dmd.e2ir

Converts expressions to Intermediate Representation (IR) for the backend.

Authors:

Walter Bright

License:

Boost License 1.0

Source e2ir.d

Documentation https://dlang.org/phobos/dmd_e2ir.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/e2ir.d

elem* elAssign(elem* e1, elem* e2, Type t, type* tx);

Generate a copy from e2 to e1.

Parameters:

elem* `e1`	lvalue
elem* `e2`	rvalue
Type `t`	value type
type* `tx`	if !null, then t converted to C type

Returns:

generated elem

bool type_zeroCopy(type* t);

Determine if zero bits need to be copied for this backend type

Parameters:

type* t backend type

Returns:

true if 0 bits

Symbol* toStringSymbol(const(char)* str, size_t len, size_t sz);

Write read-only string to object file, create a local symbol for it. Makes a copy of str's contents, does not keep a reference to it.

Parameters:

const(char)* `str`	string
size_t `len`	number of code units in string
size_t `sz`	number of bytes per code unit

Returns:

Symbol

Symbol* toStringSymbol(StringExp se);

Turn StringExp into Symbol.

void toTraceGC(ref IRState irs, elem* e, const ref Loc loc);

Replace call to GC allocator with call to tracing GC allocator.

Parameters:

IRState `irs`	to get function from
elem* `e`	elem to modify in place
Loc `loc`	to get file/line from

elem* toElemDtor(Expression e, ref IRState irs);

Convert Expression to elem, then append destructors for any temporaries created in elem.

Parameters:

Expression `e`	Expression to convert
IRState `irs`	context

Returns:

generated elem tree

elem* addressElem(elem* e, Type t, bool alwaysCopy = false);

Take address of an elem. Accounts for e being an rvalue by assigning the rvalue to a temp.

Parameters:

elem* `e`	elem to take address of
Type `t`	Type of elem
bool `alwaysCopy`	when true, always copy e to a tmp

Returns:

the equivalent of &e

void clearStringTab();

Reset stringTab[] between object files being emitted, because the symbols are local.

bool isDllImported(Dsymbol var);

Figure out whether a data symbol should be dllimported

Parameters:

Dsymbol var declaration of the symbol

Returns:

true if symbol should be imported from a DLL

Symbol* toExtSymbol(Dsymbol s);

Generate a backend symbol for a frontend symbol

Parameters:

Dsymbol s frontend symbol

Returns:

the backend symbol or the associated symbol in the import table if it is expected to be imported from a DLL

elem* toElem(Expression e, ref IRState irs);

Convert Expression to backend elem.

Parameters:

Expression `e`	expression tree
IRState `irs`	context

Returns:

backend elem tree

Library Reference

dmd.e2ir