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Module `dmd.backend.cod4`

Code generation 4

Includes

- assignemt variations of operators (+= -= *= /= %= <<= >>=) - integer comparison (< > <= >=) - converting integers to a different size (e.g. short to int) - bit instructions (bit scan, population count)

Compiler implementation of the D programming language.

Mostly code generation for assignment operators.

Documentation

https://dlang.org/phobos/dmd_backend_cod4.html

Coverage

https://codecov.io/gh/dlang/dmd/src/master/src/dmd/backend/cod4.d

Functions

Name	Description
`cdaddass(cdb, e, pretregs)`	Generate code for += -= &= \|= ^= negass
`cdasm(cdb, e, pretregs)`	Generate code for an asm elem.
`cdbscan(cdb, e, pretregs)`	Generate code for OPbsf and OPbsr.
`cdbt(cdb, e, pretregs)`	Generate code for OPbt, OPbtc, OPbtr, OPbts
`cdbtst(cdb, e, pretregs)`	Generate code for OPbtst
`cdbyteint(cdb, e, pretregs)`	Convert byte to int. For OPu8_16 and OPs8_16.
`cdcmp(cdb, e, pretregs)`	Generate code for compares. Handles lt,gt,le,ge,eqeq,ne for all data types.
`cdcmpxchg(cdb, e, pretregs)`	Generate code for OPcmpxchg
`cdcnvt(cdb, e, pretregs)`	Do conversions. Depends on OPd_s32 and CLIB.dbllng being in sequence.
`cddivass(cdb, e, pretregs)`	Generate code for /= %=
`cdeq(cdb, e, pretregs)`	Generate code for an assignment.
`cdfar16(cdb, e, pretregs)`	Generate code for OPnp_f16p and OPf16p_np.
`cdlngsht(cdb, e, pretregs)`	Convert long to short (OP32_16). Get offset of far pointer (OPoffset). Convert int to byte (OP16_8). Convert long long to long (OP64_32). OP128_64
`cdmsw(cdb, e, pretregs)`	Get top 32 bits of 64 bit value (I32) or top 16 bits of 32 bit value (I16) or top 64 bits of 128 bit value (I64). OPmsw
`cdmulass(cdb, e, pretregs)`	Generate code for *=
`cdpair(cdb, e, pretregs)`	Generate code for OPpair, OPrpair.
`cdpopcnt(cdb, e, pretregs)`	OPpopcnt operator
`cdport(cdb, e, pretregs)`	Handle operators OPinp and OPoutp.
`cdprefetch(cdb, e, pretregs)`	Generate code for OPprefetch
`cdshass(cdb, e, pretregs)`	Generate code for <<= and >>=
`cdshtlng(cdb, e, pretregs)`	Convert short to long. For OPs16_32, OPu16_32, OPnp_fp, OPu32_64, OPs32_64, OPu64_128, OPs64_128
`doinreg(s, e)`	Determine if expression e can be evaluated directly into register variable s. Have to be careful about things like x=x+x+x, and x=a+x.
`longcmp(cdb, e, jcond, fltarg, targ)`	Generate code for signed compare of longs.
`modEA(cdb, c)`	Return code for saving common subexpressions if EA turns out to be a register. This is called just before modifying an EA.

Authors

Walter Bright

License

Boost License 1.0