forked from OSchip/llvm-project
8c2f4e0e85
Summary:
Added codegen for reduction clause with task modifier.
```
#pragma omp ... reduction(task, +: a)
{
#pragma omp ... in_reduction(+: a)
}
```
is translated into something like this:
```
#pragma omp ... reduction(+:a)
{
struct red_input_t {
void *reduce_shar;
void *reduce_orig;
size_t reduce_size;
void *reduce_init;
void *reduce_fini;
void *reduce_comb;
unsigned flags;
} r_var;
r_var.reduce_shar = &a;
r_var.reduce_orig = &original a;
r_var.reduce_size = sizeof(a);
r_var.reduce_init = [](void* l,void*){return *(int*)l=0;};
r_var.reduce_fini = nullptr;
r_var.reduce_comb = [](void* l,void* r){return *(int*)l += *(int)r;};
void *tg = __kmpc_taskred_modifier_init(<loc_addr>,<gtid>,
<flag - 0 for parallel, 1 for worksharing>,
<1 - number of reduction elements>,
&r_var);
{
#pragma omp ... in_reduction(+: a) firstprivate(tg)
...
}
__kmpc_task_reduction_modifier_fini(<loc_addr>,<gtid>,
<flag - 0 for parallel, 1 for worksharing>);
}
```
Reviewers: jdoerfert
Subscribers: yaxunl, guansong, jfb, cfe-commits, caomhin
Tags: #clang
Differential Revision: https://reviews.llvm.org/D79034
|
||
|---|---|---|
| .. | ||
| INPUTS | ||
| bindings | ||
| cmake | ||
| docs | ||
| examples | ||
| include | ||
| lib | ||
| runtime | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| www | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| INSTALL.txt | ||
| LICENSE.TXT | ||
| ModuleInfo.txt | ||
| NOTES.txt | ||
| README.txt | ||
README.txt
//===----------------------------------------------------------------------===// // C Language Family Front-end //===----------------------------------------------------------------------===// Welcome to Clang. This is a compiler front-end for the C family of languages (C, C++, Objective-C, and Objective-C++) which is built as part of the LLVM compiler infrastructure project. Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer. If you're interested in more (including how to build Clang) it is best to read the relevant web sites. Here are some pointers: Information on Clang: http://clang.llvm.org/ Building and using Clang: http://clang.llvm.org/get_started.html Clang Static Analyzer: http://clang-analyzer.llvm.org/ Information on the LLVM project: http://llvm.org/ If you have questions or comments about Clang, a great place to discuss them is on the Clang development mailing list: http://lists.llvm.org/mailman/listinfo/cfe-dev If you find a bug in Clang, please file it in the LLVM bug tracker: http://llvm.org/bugs/