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[OpenMP][OMPT] fix reduction test for 32-bit x86

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Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=44733 | TEST 'libomp :: ompt/synchronization/reduction/tree_reduce.c' FAILED on 32-bit x86 ]]

For 32-bit we need at least 3 variables to avoid atomic reduction to be
choosen by runtime function `__kmp_determine_reduction_method`.
This patch adds reduction variables to the testcase.

Reviewers: mgorny, Hahnfeld

Differential Revision: https://reviews.llvm.org/D73850
This commit is contained in:
protze@itc.rwth-aachen.de 2020-02-04 12:16:03 +01:00
parent 6e01cd6795
commit 90e4ebdce5
1 changed files with 7 additions and 3 deletions
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10
openmp/runtime/test/ompt/synchronization/reduction/tree_reduce.c
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@ -1,4 +1,5 @@
// RUN: %libomp-compile-and-run | %sort-threads | FileCheck %s
// RUN: %libomp-compile -DNOWAIT && %libomp-run | %sort-threads | FileCheck %s
// REQUIRES: ompt
// UNSUPPORTED: gcc
#include "callback.h"
@ -11,14 +12,17 @@
#endif
int main() {
int sum = 0;
int sum = 0, a = 0, b = 0;
int i;
#pragma omp parallel num_threads(5)
#pragma omp for reduction(+ : sum) FOR_CLAUSE
// for 32-bit architecture we need at least 3 variables to trigger tree
#pragma omp for reduction(+ : sum, a, b) FOR_CLAUSE
for (i = 0; i < 10000; i++) {
sum += i;
a = b = sum += i;
}
printf("%i\n", sum);
// CHECK: 0: NULL_POINTER=[[NULL:.*$]]
// CHECK: {{^}}[[MASTER_ID:[0-9]+]]: ompt_event_parallel_begin: