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only.
Added support for -fopenmp-simd option that allows compilation of
simd-based constructs without emission of OpenMP runtime calls.
llvm-svn: 321560
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If the thread id is requested in windows mode within funclets, we may
generate incorrect function call that could lead to broken codegen.
llvm-svn: 317208
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__kmpc_for_static_fini().
Added special flags for calls of __kmpc_for_static_fini(), like previous
ly for __kmpc_for_static_init(). Added flag OMP_IDENT_WORK_DISTRIBUTE
for distribute cnstruct, OMP_IDENT_WORK_SECTIONS for sections-based
constructs and OMP_IDENT_WORK_LOOP for loop-based constructs in
location flags.
llvm-svn: 312642
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If exceptions are enabled, there may be a problem with the codegen of
the finalization functions from OpenMP runtime. It happens because of
the problem with the getting of thread identifier value. Patch tries to
fix it by using the result of the call of function
__kmpc_global_thread_num() rather than loading of value of outlined
function parameter.
llvm-svn: 311007
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__kmpc_for_static_init().
OpenMP 5.0 will include OpenMP Tools interface that requires distinguishing different worksharing constructs.
Since the same entry point (__kmp_for_static_init(ident_t *loc,
kmp_int32 global_tid,........)) is called in case static
loop/sections/distribute it is suggested using 'flags' field of the
ident_t structure to pass the type of the construct.
llvm-svn: 310865
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Clang can generate LLVM IR for x86 without a registered x86 backend.
llvm-svn: 284836
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If 'sections' directive has only one sub-section, the code for 'single'-based directive was emitted. Removed this codegen, because it causes crashes in different cases.
llvm-svn: 258495
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#pragma omp parallel needs an implicit barrier that is currently done by an explicit call to __kmpc_barrier. However, the runtime already ensures a barrier in __kmpc_fork_call which currently leads to two barriers per region per thread.
Differential Revision: http://reviews.llvm.org/D15561
llvm-svn: 255992
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if 'cancel' is found.
Patch improves codegen for OpenMP constructs. If the OpenMP region does not have internal 'cancel' construct, a call to 'void __kmpc_barrier()' runtime function is generated for all implicit/explicit barriers. If the region has inner 'cancel' directive, then
```
if (__kmpc_cancel_barrier())
exit from outer construct;
```
code is generated.
Also, the code for 'canellation point' directive is not generated if parent directive does not have 'cancel' directive.
llvm-svn: 247681
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of the llvm targets from clang/CodeGen into ClangCheck.cpp and CIndex.cpp.
llvm-svn: 241653
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failures.
llvm-svn: 241642
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r241620.
llvm-svn: 241623
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Generate the next code for 'cancellation point':
if (__kmpc_cancellationpoint()) {
__kmpc_cancel_barrier();
<exit construct>;
}
llvm-svn: 241336
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-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified).
Differential Revision: http://reviews.llvm.org/D9736
llvm-svn: 237769
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Refactored API of OpenMPRuntime for compatibility with combined directives.
Differential Revision: http://reviews.llvm.org/D8859
llvm-svn: 234564
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Replace boolean IsExplicit parameter of OpenMPRuntime::emitBarrierCall() method by OpenMPDirectiveKind Kind for better compatibility with the runtime library. Also add processing of 'nowait' clause on worksharing directives.
Differential Revision: http://reviews.llvm.org/D8659
llvm-svn: 233511
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If only one section is found in the sections region, it is emitted just like single region.
Otherwise it is emitted as a static non-chunked loop.
#pragma omp sections
{
#pragma omp section
{1}
...
#pragma omp section
{n}
}
is translated to something like
i32 <iter_var>
i32 <last_iter> = 0
i32 <lower_bound> = 0
i32 <upper_bound> = n-1
i32 <stride> = 1
call void @__kmpc_for_static_init_4(<loc>, i32 <gtid>, i32 34/*static non-chunked*/, i32* <last_iter>, i32* <lower_bound>, i32* <upper_bound>, i32* <stride>, i32 1/*increment always 1*/, i32 1/*chunk always 1*/)
<upper_bound> = min(<upper_bound>, n-1)
<iter_var> = <lb>
check:
br <iter_var> <= <upper_bound>, label cont, label exit
continue:
switch (IV) {
case 0:
{1};
break;
...
case <NumSection> - 1:
{n};
break;
}
++<iter_var>
br label check
exit:
call void @__kmpc_for_static_fini(<loc>, i32 <gtid>)
Differential Revision: http://reviews.llvm.org/D8244
llvm-svn: 232021
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