search for: expandpseudoinstructions

Displaying 2 results from an estimated 2 matches for "expandpseudoinstructions".

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 thou...
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