message: Temporarily disable marking of MatMul backward pass.
diff: @@ -154,10 +154,11 @@ bool IsForwardMatMul(const HloInstruction* inst) {
  }
  bool IsGradientMatMul(const HloInstruction* inst) {
  - const HloInstruction* lh = inst->operand(0);
  - const HloInstruction* rh = inst->operand(1);
  - return (lh->opcode() != HloOpcode::kTranspose &&
  - rh->opcode() == HloOpcode::kTranspose);
  +// const HloInstruction* lh = inst->operand(0);
  +// const HloInstruction* rh = inst->operand(1);
  +// return (lh->opcode() != HloOpcode::kTranspose &&
  +// rh->opcode() == HloOpcode::kTranspose);
  + return false;
  }
  bool IsWeightUpdateMatMul(const HloInstruction* inst) {
  