diff options
Diffstat (limited to 'tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc')
| -rw-r--r-- | tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc b/tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc index bcc9418d59..e348511c62 100644 --- a/tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc +++ b/tensorflow/compiler/xla/service/llvm_ir/llvm_util.cc @@ -356,26 +356,9 @@ void EmitLogging(const char* tag, llvm::Value* value, void SetTbaaForInstruction(llvm::Instruction* instruction, Shape shape, bool is_pointer_to) { - llvm::MDBuilder metadata_builder(instruction->getContext()); - llvm::MDNode* root = metadata_builder.createTBAARoot("XLA TBAA"); - string type_name; - if (is_pointer_to) { - type_name += "pointer-to "; - } - // Scalars do not have layout which makes it permissible to omit an explicit - // layout. To make sure that equivalent scalar shapes have the same TBAA, - // remove the (meaningless) explicit layout if one is present. - if (!ShapeUtil::IsArray(shape) || ShapeUtil::IsScalar(shape)) { - LayoutUtil::ClearLayout(&shape); - } else { - CHECK(shape.has_layout()); - } - type_name += shape.ShortDebugString(); - llvm::MDNode* tbaa_node = - metadata_builder.createTBAANode(llvm_ir::AsStringRef(type_name), root); - instruction->setMetadata(llvm::LLVMContext::MD_tbaa, - metadata_builder.createTBAAStructTagNode( - tbaa_node, tbaa_node, /*Offset=*/0)); + // TODO(b/62903316): TBAA metadata causes LLVM to miscompile generated code, + // most likely because the generated metadata is incorrect. Disable TBAA + // metadata while we resolve this. } void SetAlignmentMetadataForLoad(llvm::LoadInst* load, uint64_t alignment) { |