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# dmd.argtypes_sysv_x64

Compiler implementation of the D programming language.
Authors:
Martin Kinkelin
License:
Boost License 1.0

Source argtypes_sysv_x64.d

Documentation https://dlang.org/phobos/dmd_argtypes_sysv_x64.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/argtypes_sysv_x64.d

TypeTuple `toArgTypes_sysv_x64`(Type `t`);
  This breaks a type down into 'simpler' types that can be passed to a function in registers, and returned in registers. This is the implementation for the x86_64 System V ABI (not used for Win64), based on https://www.uclibc.org/docs/psABI-x86_64.pdf.
  Parameters:

  Type `t` | type to break down

  Returns:
  tuple of types, each element can be passed in a register. A tuple of zero length means the type cannot be passed/returned in registers. null indicates a void.

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