Displaying 2 results from an estimated 2 matches for "expandpseudoinstruct".
2017 Jul 07
2
Lowering Select to Two Predicated Movs
Ohh, that makes sense. And is the reason the first instruction doesn't get
deleted because the ExpandPseudoInstructions pass occurs after Register
Allocation and machine dead code elimination?
-Dilan
On Fri, Jul 7, 2017 at 12:37 PM Friedman, Eli <efriedma at codeaurora.org>
wrote:
> On 7/7/2017 12:10 PM, Dilan Manatunga wrote:
> > My bad for not looking further. I'm still somewhat confused...
2017 Jul 07
2
Lowering Select to Two Predicated Movs
My bad for not looking further. I'm still somewhat confused though. MOVCCr
gets expanded in the ARMExpandPseudoInsts pass, and it still seems only a
case of one instruction replacing the other.
My worry of emitting two instructions, is that a dead code pass will
eliminate the first instruction cause it thinks the second instruction is
defining the same register.
-Dilan
On Fri, Jul 7, 2017