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dmd.e2ir

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

Source e2ir.d

bool ISX64REF(Declaration var);
If variable var is a value that will actually be passed as a reference
Parameters:
Declaration var parameter variable
Returns:
true if actually implicitly passed by reference
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