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57 Commits

Author SHA1 Message Date
Adrian Prantl 142ec39739 Revert r241620 and follow-up commits while investigating linux buildbot failures. 
llvm-svn: 241642
 2015-07-07 23:19:46 +00:00
Adrian Prantl 726855a8da Update testcases that use precompiled headers to require a target after 
r241620.

llvm-svn: 241623
 2015-07-07 20:31:18 +00:00
Alexey Bataev db39021cee [OPENMP] -fopenmp enables OpenMP support (fix for http://llvm.org/PR23492) 
-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
 2015-05-20 04:24:19 +00:00
Alexey Bataev f0ab553fea [OPENMP] Fixed bug in atomic update/capture/write constructs. 
Fixed a bug with codegen for destination atomic l-value with padding and junk in this padding bytes.

llvm-svn: 237422
 2015-05-15 08:36:34 +00:00
Alexey Bataev 69a4779965 [OPENMP] Fixed codegen for 'reduction' clause. 
Fixed codegen for reduction operations min, max, && and ||. Codegen for them is quite similar and I was confused by this similarity.
Also added a call to kmpc_end_reduce() in atomic part of reduction codegen (call to kmpc_end_reduce_nowait() is not required).
Differential Revision: http://reviews.llvm.org/D9513

llvm-svn: 236689
 2015-05-07 03:54:03 +00:00
Alexey Bataev 19fa2c3b66 [OPENMP] Fix crash on reductions codegen for short circuit reduction operations. 
llvm-svn: 236084
 2015-04-29 05:21:03 +00:00
Alexey Bataev 7ebe5fddac [OPENMP] Codegen for 'reduction' clause in 'for' directive. 
Emit a code for reduction clause. Next code should be emitted for reductions:

static kmp_critical_name lock = { 0 };

void reduce_func(void *lhs[<n>], void *rhs[<n>]) {
    *(Type0*)lhs[0] = ReductionOperation0(*(Type0*)lhs[0], *(Type0*)rhs[0]);
      ...
        *(Type<n>-1*)lhs[<n>-1] =
          ReductionOperation<n>-1(*(Type<n>-1*)lhs[<n>-1],
            *(Type<n>-1*)rhs[<n>-1]);
}

 ...
  void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n>-1]};
   switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), RedList, reduce_func, &<lock>)) {
      case 1:
        <LHSExprs>[0] = ReductionOperation0(*<LHSExprs>[0], *<RHSExprs>[0]);
          ...
            <LHSExprs>[<n>-1] = ReductionOperation<n>-1(*<LHSExprs>[<n>-1], *<RHSExprs>[<n>-1]);
             __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>);
              break;
               case 2:
                 Atomic(<LHSExprs>[0] = ReductionOperation0(*<LHSExprs>[0], *<RHSExprs>[0]));
                   ...
                     Atomic(<LHSExprs>[<n>-1] = ReductionOperation<n>-1(*<LHSExprs>[<n>-1], *<RHSExprs>[<n>-1]));
                      break;
                       default:;
                        }
                        Reduction variables are a kind of a private variables, they have private copies, but initial values are chosen in accordance with the reduction operation.
Differential Revision: http://reviews.llvm.org/D9139

llvm-svn: 235506
 2015-04-22 13:43:03 +00:00