Issue 230120.4: Add the HIP Programing Language
Section various, pg various
PROBLEM DESCRIPTION
Add the HIP programming language, which is supported by the AMDGPU.
HIP consists of a language extensions/restrictions to C++ and a runtime API.
The language has syntax for defining host and device functions, and a
<<<…>>> syntax to launch grid dispatches of device kernels. The device
functions have language intrinsics to access the thread position in the
dispatch, have additional language features to support address spaces,
and the memory model has extra support for both address spaces and memory
scopes. The address-of operator for device functions is also a bit different
as it produces an address in the generic address space (able to reference
storage in multiple other address spaces).
A debugger has to treat the language address spaces differently than
plain C++ and also support the HIP language specific intrinsics.
HIP as a language has similarities to the OpenCL kernel language and
the CUDA language.
See: https://rocmdocs.amd.com/en/latest/Programming_Guides/Programming-Guides.html
PROPOSAL for DWARF 5
In Section 3.1.1 "Full and Partial Compilation Unit Entries", add the following
row to Table 3.1 "Language Names":
----------------------------------------------------------------------------
Table 3.1: Language Names
==================== =============================
Language Name Meaning
==================== =============================
DW_LANG_HIP HIP
==================== =============================
----------------------------------------------------------------------------
In Section 7.12 "Source Languages", add the following row to Table 7.17
"Language encodings":
----------------------------------------------------------------------------
Table 7.17: Language encodings
==================== ====== ===================
Language Name Value Default Lower Bound
==================== ====== ===================
DW_LANG_HIP 0x0030 0
==================== ====== ===================
----------------------------------------------------------------------------
PROPOSAL for DWARF 6
In Section 3.1.1 "Full and Partial Compilation Unit Entries", add the following
row to Table 3.1 "Language Names":
----------------------------------------------------------------------------
Table 3.1: Language Names
==================== ================= ==================
Language name Meaning Version Scheme
==================== ================= ==================
DW_LNAME_HIP HIP
==================== ================= ==================
----------------------------------------------------------------------------
In Section 7.12 "Source Languages", add the following row to Table 7.17
"Language encodings":
----------------------------------------------------------------------------
Table 7.17: Language encodings
==================== ====== ===================
Language name Value Default Lower Bound
==================== ====== ===================
DW_LNAME_HIP ‡ 0x001d 0
==================== ====== ===================
----------------------------------------------------------------------------
--
2023-02-02: Language code assigned.
