// Arithmetic.
defm WriteALU : X86SchedWritePair; // Simple integer ALU op.
defm WriteIMul : X86SchedWritePair; // Integer multiplication.
+def WriteIMulH : SchedWrite; // Integer multiplication, high part.
defm WriteIDiv : X86SchedWritePair; // Integer division.
def WriteLEA : SchedWrite; // LEA instructions can't fold loads.