<div dir="ltr"><div>For example, if you have something like:</div><div><br></div><div>....</div><div>vreg3 = LD operation</div><div>vreg4 = vreg2 * vreg1</div><div>...</div><div><br></div><div>Where I would like vreg3 and vreg4 to map to the same physical register?</div>
<div><br></div><div>Imagine that the second instruction has an implicit arithmetic operation tied to vreg 4 such that vreg4 is both an input and output and the initial value of vreg4 is loaded into vreg3, so such that vreg4 = vreg3.</div>
<div><br></div><div>Is this possible pre-regalloc? </div><div><br></div><div>Thanks.</div></div>