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Module `dmd.backend.elem`

Routines to handle elems.

Compiler implementation of the D programming language.

Functions

Name	Description
`el_alignsize(e)`
`el_allbits(e, bit)`	Determine if constant e is all ones or all zeros.
`el_alloctmp(ty)`	Allocate a temporary, and return temporary elem.
`el_anydef(ed, e)`	Does any definition of lvalue ed appear in e?
`el_appears(e, s)`	Does symbol s appear in tree e?
`el_bint(op, t, e1, e2)`	Make a binary operator node.
`el_calloc()`	Allocate an element.
`el_combine(e1, e2)`	Combine e1 and e2 with a comma-expression. Be careful about either or both being null.
`el_combines(args, length)`	Do an array of parameters as a balanced binary tree.
`el_const(ty, pconst)`	Make a constant elem. ty = type of elem *pconst = union of constant data
`el_convert(e)`	Run through a tree converting it to CODGEN.
`el_convfloat(e)`	Convert floating point constant to a read-only symbol. Needed iff floating point code can't load immediate constants.
`el_convstring(e)`	Convert reference to a string to reference to a symbol stored in the static data segment.
`el_convxmm(e)`	Convert vector constant to a read-only symbol. Needed iff vector code can't load immediate constants.
`el_copy(to, from)`	Copy an element (not the tree!).
`el_copytotmp(pe)`	Thin wrapper of exp2_copytotemp. Different from el_same, always makes a temporary.
`el_copytree(e)`	Create and return a duplicate of e, including its leaves. No CSEs.
`el_countCommas(e)`	Count number of commas in the expression.
`el_ctor_dtor(ec, ed, pedtor)`	Create constructor/destructor pair of elems.
`el_depends(ea, eb)`
`el_dtor(edtor, e)`	Insert destructor information into tree. edtor pointer to object being destructed e code to do the destruction
`el_free(e)`	Free element
`el_funcsideeff(e)`
`el_init()`	Initialize el package.
`el_isdependent(e)`	Is elem type-dependent or value-dependent?
`el_longt(t, val)`	Make a constant node out of integral type.
`el_match(n1, n2)`
`el_match2(n1, n2)`	Kludge on el_match(). Same, but ignore differences in OPconst.
`el_match3(n1, n2)`	Kludge on el_match(). Same, but ignore differences in type modifiers.
`el_match4(n1, n2)`	Kludge on el_match(). Same, but ignore differences in spelling of var's.
`el_match5(n1, n2)`	Kludge on el_match(). Same, but regard signed/unsigned as equivalent.
`el_nparams(e)`	Return a list of the parameters.
`el_opArray(parray, e, op)`	Fill an array with the ops.
`el_opCombine(args, length, op, ty)`	Do an array of parameters as a tree
`el_opN(e, op)`	Return number of op nodes
`el_pair(tym, lo, hi)`	Create a quad word out of two dwords.
`el_param(e1, e2)`	Combine e1 and e2 as parameters to a function. Be careful about either or both being null.
`el_paramArray(parray, e)`	Fill an array with the parameters.
`el_params(e1)`	Create parameter list, terminated by a null.
`el_params(args, length)`	Do an array of parameters as a balanced binary tree.
`el_parent(e, pe)`	Find and return pointer to parent of e starting at pe. Return null if can't find it.
`el_reset()`	Initialize for another run through.
`el_returns(e)`	Determine if expression may return. Does not detect all cases, errs on the side of saying it returns.
`el_same(pe)`	Similar to el_copytree(e). But if e has any side effects, it's replaced with (tmp = e) and tmp is returned.
`el_scancommas(pe)`	Scan down commas and return the controlling elem. Extra layer of indirection so we can update (*ret)
`el_selecte1(e)`	Select the e1 child of e.
`el_selecte2(e)`	Select the e2 child of e.
`el_settype(e, t)`	Set new type for elem.
`el_sideeffect(e)`
`el_signx32(e)`	Determine if constant e is a 32 bit or less value, or is a 32 bit value sign extended to 64 bits.
`el_term()`	Terminate el package.
`el_toldouble(e)`	Extract long double value from constant elem. Silently ignore types which are not floating point values.
`el_tolong(e)`	Extract long value from constant elem.
`el_tolongt(e)`	Extract long value from constant parser elem.
`el_typesize(t)`	Create elem that is the size of a type.
`el_unat(op, t, e1)`	Make a unary operator node.
`el_vectorConst(ty, val)`	Create a const integer vector elem
`el_zero(t)`	Create an elem of the constant 0, of the type t.
`elem_print(e, nestlevel)`	Write out expression elem.
`ERTOL(e)`
`exp2_copytotemp(e)`	Replace (e) with ((stmp = e),stmp)
`shrinkLongDoubleConstantIfPossible(e)`	If e is a long double constant, and it is perfectly representable as a double constant, convert it to a double constant. Note that this must NOT be done in contexts where there are no further operations, since then it could change the type (eg, in the function call printf("%La", 2.0L); the 2.0 must stay as a long double).

Structs

Name	Description
`STAB`

Authors

Walter Bright

License

Boost License 1.0