message: [XLA:GPU] Don't fuse random things into fusions that become a cublas call
  Only transpose and broadcast are valid. I think this used to work because we
  didn't emit cublas calls for fused dots until recently.
diff: @@ -202,6 +202,7 @@ bool GpuInstructionFusion::ShouldFuse(HloInstruction* consumer,
  IsIEEEFloatingPointScalarConstant(producer->operand(0)) &&
  fused_parameter_users[0]->opcode() == HloOpcode::kMultiply;
  }
  + return false;
  }
  // Other output fusions are not currently supported on GPUs.
  