[LLVMdev] clobbering other physical registers in storeRegtoStackSlot.

[Sanjiv.Gupta at microchip.com]

In our case, storeRegToStackSlot, loadRegFromStackSlot clobbers some other physical register which may be holding a live value used somewhere else. How do I make regalloc aware so that it saves the value before storeRegToStackSlot and make it available again at the point of earlier use?

TIA,
Sanjiv
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