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| author | Tom de Vries <tom@codesourcery.com> | 2015-07-28 07:54:04 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2015-07-28 07:54:04 +0000 |
| commit | 12efb1d75f459d7c69bfaededd398f9724ee67bb (patch) | |
| tree | c8e721d99e98b1d94dbde05660f4bbdccf11aa88 /libgomp | |
| parent | 70b47b619938d465c89370bfc5bf1988cfd0415b (diff) | |
| download | gcc-12efb1d75f459d7c69bfaededd398f9724ee67bb.zip gcc-12efb1d75f459d7c69bfaededd398f9724ee67bb.tar.gz gcc-12efb1d75f459d7c69bfaededd398f9724ee67bb.tar.bz2 | |
Handle double reduction in parloops
2015-07-28 Tom de Vries <tom@codesourcery.com>
* tree-parloops.c (reduc_stmt_res): New function.
(initialize_reductions, add_field_for_reduction)
(create_phi_for_local_result, create_loads_for_reductions)
(create_stores_for_reduction, build_new_reduction): Handle case that
reduc_stmt is a phi.
(gather_scalar_reductions): Allow double_reduc reductions.
* gcc.dg/autopar/uns-outer-4.c: Remove xfail on scan for parallelizing
outer loop.
* testsuite/libgomp.c/uns-outer-4.c: New test.
From-SVN: r226300
Diffstat (limited to 'libgomp')
| -rw-r--r-- | libgomp/ChangeLog | 4 | ||||
| -rw-r--r-- | libgomp/testsuite/libgomp.c/uns-outer-4.c | 36 |
2 files changed, 40 insertions, 0 deletions
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog index d218992..4c9f690 100644 --- a/libgomp/ChangeLog +++ b/libgomp/ChangeLog @@ -1,3 +1,7 @@ +2015-07-28 Tom de Vries <tom@codesourcery.com> + + * testsuite/libgomp.c/uns-outer-4.c: New test. + 2015-07-24 Cesar Philippidis <cesar@codesourcery.com> * testsuite/libgomp.c/pr66714.c: New test. diff --git a/libgomp/testsuite/libgomp.c/uns-outer-4.c b/libgomp/testsuite/libgomp.c/uns-outer-4.c new file mode 100644 index 0000000..cd646a5 --- /dev/null +++ b/libgomp/testsuite/libgomp.c/uns-outer-4.c @@ -0,0 +1,36 @@ +/* { dg-do run } */ +/* { dg-additional-options "-ftree-parallelize-loops=2" } */ + +void abort (void); + +unsigned int g_sum = 1; + +unsigned int x[500][500]; + +void __attribute__((noinline,noclone)) +parloop (int N) +{ + int i, j; + unsigned int sum; + + /* Double reduction is detected, outer loop is parallelized. */ + sum = 0; + for (i = 0; i < N; i++) + for (j = 0; j < N; j++) + sum += x[i][j]; + + g_sum = sum; +} + +int +main (void) +{ + x[234][432] = 2; + + parloop (500); + + if (g_sum != 2) + abort (); + + return 0; +} |