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[PR tree-optimization/78024] Clear basic block flags before using BB_VISITED for OpenACC loops processing 

gcc/
	* omp-low.c (oacc_loop_discovery): Call clear_bb_flags before, and
	don't clear BB_VISITED after processing.

	gcc/testsuite/
	* gcc.dg/goacc/loop-processing-1.c: New file.

From-SVN: r241334
This commit is contained in:
Thomas Schwinge 2016-10-19 12:19:24 +02:00 committed by Thomas Schwinge
parent d40627f933
commit a023f8c8dc
4 changed files with 32 additions and 5 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2016-10-19 Thomas Schwinge <thomas@codesourcery.com>
PR tree-optimization/78024
* omp-low.c (oacc_loop_discovery): Call clear_bb_flags before, and
don't clear BB_VISITED after processing.
2016-10-19 Richard Biener <rguenther@suse.de>
* domwalk.c (dom_walker::walk): Use RPO order.

8
gcc/omp-low.c
View File

@ -19236,7 +19236,9 @@ oacc_loop_sibling_nreverse (oacc_loop *loop)
static oacc_loop *
oacc_loop_discovery ()
{
basic_block bb;
/* Clear basic block flags, in particular BB_VISITED which we're going to use
in the following. */
clear_bb_flags ();
oacc_loop *top = new_oacc_loop_outer (current_function_decl);
oacc_loop_discover_walk (top, ENTRY_BLOCK_PTR_FOR_FN (cfun));
@ -19245,10 +19247,6 @@ oacc_loop_discovery ()
that diagnostics come out in an unsurprising order. */
top = oacc_loop_sibling_nreverse (top);
/* Reset the visited flags. */
FOR_ALL_BB_FN (bb, cfun)
bb->flags &= ~BB_VISITED;
return top;
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-10-19 Thomas Schwinge <thomas@codesourcery.com>
PR tree-optimization/78024
* gcc.dg/goacc/loop-processing-1.c: New file.
2016-10-19 Richard Biener <rguenther@suse.de>
* gcc.dg/tree-ssa/pr61839_2.c: Fix testcase.

18
gcc/testsuite/gcc.dg/goacc/loop-processing-1.c Normal file
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@ -0,0 +1,18 @@
/* Make sure that OpenACC loop processing happens. */
/* { dg-additional-options "-O2 -fdump-tree-oaccdevlow" } */
extern int place ();
void vector_1 (int *ary, int size)
{
#pragma acc parallel num_workers (32) vector_length(32) copy(ary[0:size]) firstprivate (size)
{
#pragma acc loop gang
for (int jx = 0; jx < 1; jx++)
#pragma acc loop auto
for (int ix = 0; ix < size; ix++)
ary[ix] = place ();
}
}
/* { dg-final { scan-tree-dump {OpenACC loops.*Loop 0\(0\).*Loop 14\(1\).*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_HEAD_MARK, 0, 1, 20\);.*Head-0:.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_HEAD_MARK, 0, 1, 20\);.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_FORK, \.data_dep\.[0-9_]+, 0\);.*Tail-0:.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_TAIL_MARK, \.data_dep\.[0-9_]+, 1\);.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_JOIN, \.data_dep\.[0-9_]+, 0\);.*Loop 6\(4\).*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_HEAD_MARK, 0, 1, 6\);.*Head-0:.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_HEAD_MARK, 0, 1, 6\);.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_FORK, \.data_dep\.[0-9_]+, 2\);.*Tail-0:.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_TAIL_MARK, \.data_dep\.[0-9_]+, 1\);.*\.data_dep\.[0-9_]+ = UNIQUE \(OACC_JOIN, \.data_dep\.[0-9_]+, 2\);} "oaccdevlow" } } */