[AMDGPU] Start documenting calling conventions. NFC
authorDiana Picus <Diana-Magda.Picus@amd.com>
Wed, 7 Jun 2023 11:52:36 +0000 (13:52 +0200)
committerDiana Picus <Diana-Magda.Picus@amd.com>
Tue, 20 Jun 2023 08:45:58 +0000 (10:45 +0200)
commit5c5eff44ce8191df8e101d4caa16bd24475f5f07
treef42f92130b47f7d98c80a578c0cf8274accfaa42
parentf6be0814c3a5d1b957164be0af16018dc2b9232d
[AMDGPU] Start documenting calling conventions. NFC

Add a section to AMDGPUUsage.rst about calling conventions and list the
ones from the CallingConv enum. Full descriptions can come later (help
appreciated).

Differential Revision: https://reviews.llvm.org/D151996
llvm/docs/AMDGPUUsage.rst