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Tidy up code to determine bit mask for ballot scans (#1363)

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It seems more intuitive to set only the bits that are required, rather
than to set one more bit than is required, only to clear it again.

Signed-off-by: Stuart Brady <stuart.brady@arm.com>
This commit is contained in:
Stuart Brady
2021-12-02 15:27:30 +00:00
committed by GitHub
parent 7625011b66
commit f8ec235d3c
1 changed files with 3 additions and 3 deletions
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6
test_conformance/subgroups/test_subgroup_ballot.cpp
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@@ -437,9 +437,9 @@ template <typename Ty, BallotOp operation> struct BALLOT_COUNT_SCAN_FIND
else if (operation == BallotOp::ballot_inclusive_scan
|| operation == BallotOp::ballot_exclusive_scan)
{
for (cl_uint i = 0; i <= sub_group_local_id; ++i) mask.set(i);
if (operation == BallotOp::ballot_exclusive_scan)
mask.reset(sub_group_local_id);
for (cl_uint i = 0; i < sub_group_local_id; ++i) mask.set(i);
if (operation == BallotOp::ballot_inclusive_scan)
mask.set(sub_group_local_id);
}
return mask;
}