[Openmp-dev] CodeGen for target offloading

[Abid Malik via Openmp-dev]

Hello,

For some OpenMP target offloading code, I see the following at the top:
-----

; __CLANG_OFFLOAD_BUNDLE____START__ openmp-nvptx64-nvidia-cuda
; ModuleID = 'if.cpp'
source_filename = "if.cpp"
target datalayout = "e-i64:64-i128:128-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-nvidia-cuda"

%struct.ident_t = type { i32, i32, i32, i32, i8* }
%class.omptarget_nvptx_Queue = type { [32 x
%class.omptarget_nvptx_ThreadPrivateContext], [32 x
%class.omptarget_nvptx_ThreadPrivateContext*], i32, [32 x i32], i32, [8 x
i8] }
%class.omptarget_nvptx_ThreadPrivateContext = type {
%class.omptarget_nvptx_TeamDescr, [1024 x
%class.omptarget_nvptx_TaskDescr], [1024 x
%class.omptarget_nvptx_TaskDescr*], %union.anon, [1024 x i32], [1024 x
i64], [1024 x i64], [1024 x i64], [1024 x i64], i64, [8 x i8] }
%class.omptarget_nvptx_TeamDescr = type { %class.omptarget_nvptx_TaskDescr,
%class.omptarget_nvptx_WorkDescr, i64, [8 x i8], [32 x
%struct.__kmpc_data_sharing_worker_slot_static], [1 x
%struct.__kmpc_data_sharing_master_slot_static] }
%class.omptarget_nvptx_TaskDescr = type {
%"struct.omptarget_nvptx_TaskDescr::SavedLoopDescr_items",
%"struct.omptarget_nvptx_TaskDescr::TaskDescr_items",
%class.omptarget_nvptx_TaskDescr* }
%"struct.omptarget_nvptx_TaskDescr::SavedLoopDescr_items" = type { i64,
i64, i64, i64, i32 }
%"struct.omptarget_nvptx_TaskDescr::TaskDescr_items" = type { i8, i8, i16,
i64 }
%class.omptarget_nvptx_WorkDescr = type { %class.omptarget_nvptx_TaskDescr }
%struct.__kmpc_data_sharing_worker_slot_static = type {
%struct.__kmpc_data_sharing_slot*, %struct.__kmpc_data_sharing_slot*, i8*,
i8*, [8192 x i8] }
%struct.__kmpc_data_sharing_slot = type {
%struct.__kmpc_data_sharing_slot*, %struct.__kmpc_data_sharing_slot*, i8*,
i8*, [0 x i8] }
%struct.__kmpc_data_sharing_master_slot_static = type {
%struct.__kmpc_data_sharing_slot*, %struct.__kmpc_data_sharing_slot*, i8*,
i8*, [256 x i8] }
%union.anon = type { [1024 x i16] }
%struct.DataSharingStateTy = type { [32 x
%struct.__kmpc_data_sharing_slot*], [32 x i8*], [32 x i8*], [32 x i32] }
%printf_args.5 = type { i32 }

@"_openmp_kernel_static_glob_rd$ptr" = internal addrspace(3) global i8* null
@.str = private unnamed_addr constant [23 x i8]
c";unknown;unknown;0;0;;\00", align 1
@0 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2050, i32
3, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i32 0,
i32 0) }, align 8
@1 = private unnamed_addr constant %struct.ident_t { i32 0, i32 514, i32 3,
i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i32 0, i32
0) }, align 8
@.str2 = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
@2 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 3,
i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i32 0, i32
0) }, align 8
@__omp_offloading_2c_19fe4918__Z4FUNCi_l7_exec_mode = weak constant i8 0
@llvm.compiler.used = appending global [1 x i8*] [i8*
@__omp_offloading_2c_19fe4918__Z4FUNCi_l7_exec_mode], section
"llvm.metadata"
@parallelLevel = external dso_local local_unnamed_addr addrspace(3) global
[32 x i8], align 1
@threadsInTeam = external dso_local local_unnamed_addr addrspace(3) global
i16, align 2
@execution_param = external dso_local local_unnamed_addr addrspace(3)
global i32, align 4
@usedSlotIdx = external dso_local local_unnamed_addr addrspace(3) global
i32, align 4
@omptarget_nvptx_device_State = external dso_local addrspace(1) global [84
x %class.omptarget_nvptx_Queue], align 16
@omptarget_nvptx_threadPrivateContext = external dso_local
local_unnamed_addr addrspace(3) global
%class.omptarget_nvptx_ThreadPrivateContext*, align 8
@DataSharingState = external dso_local addrspace(3) global
%struct.DataSharingStateTy, align 8

---


Which part of the codegen is producing/responsible for this code?


-- 
Abid M. Malik
******************************************************
"I have learned silence from the talkative, toleration from the intolerant,
and kindness from the unkind"---Gibran
"Success is not for the chosen few, but for the few who choose" --- John
Maxwell
"Being a good person does not depend on your religion or status in life,
your race or skin color, political views or culture. IT DEPENDS ON HOW GOOD
YOU TREAT OTHERS"--- Abid
"The Universe is talking to us, and the language of the Universe is
mathematics."----Abid
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/openmp-dev/attachments/20200811/84062f20/attachment.html>