diff options
Diffstat (limited to 'tensorflow/compiler/xla/service/hlo_alias_analysis.cc')
| -rw-r--r-- | tensorflow/compiler/xla/service/hlo_alias_analysis.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/tensorflow/compiler/xla/service/hlo_alias_analysis.cc b/tensorflow/compiler/xla/service/hlo_alias_analysis.cc index a88283ed9a..0a948cc390 100644 --- a/tensorflow/compiler/xla/service/hlo_alias_analysis.cc +++ b/tensorflow/compiler/xla/service/hlo_alias_analysis.cc @@ -493,6 +493,16 @@ StatusOr<std::unique_ptr<HloAliasAnalysis>> HloAliasAnalysis::Run( bool HloAliasAnalysis::HasLiveRangeInterference( const HloOrdering& ordering) const { for (const HloBuffer& buffer : buffers()) { + CHECK(!buffer.values().empty()); + if (ShapeUtil::IsToken(buffer.values().front()->shape())) { + // Tokens have no on-device representation and cannot interfere. + for (const HloValue* value : buffer.values()) { + // If one of the values is a token, all values must be a token. + DCHECK(ShapeUtil::IsToken(value->shape())); + } + continue; + } + // Check that the values in the buffer are totally ordered with respect to // 'ordering'. Begin by sorting the values with respect to 'ordering' with a // tie-break using value ID. The tie-break is necessary because we need a @@ -517,7 +527,6 @@ bool HloAliasAnalysis::HasLiveRangeInterference( // a buffer and A interferes with C, then necessarily A also interferes // with B. So to check interference you only need to check interference // between A and B, and between B and C. - CHECK(!values.empty()); for (int i = 1; i < values.size(); ++i) { if (!ordering.IsDefinedBefore(*values[i - 1], *values[i])) { VLOG(1) << values[i - 1]->ToShortString() << " and " |