search for: machinesch

...ollow your last statement. How does this impact AA? > >> CodeGenPrep is run late, after AA is done. > > > > I don't know if this is relevant for Lim or not, but some targets > > use AA during CodeGen (instruction scheduling mostly, but SDAG > > too). > > MachineSched uses AA to determine if something is loop invariant, > which basically boils down to looking at machine operand and see > it's pointing to constant memory. I don't see how that's impact by > GEP vs. ADDS + MUL. MachineSched can use AA for a lot more than that. I use AA durin...

...nt. How does this impact AA? >>>> CodeGenPrep is run late, after AA is done. >>> >>> I don't know if this is relevant for Lim or not, but some targets >>> use AA during CodeGen (instruction scheduling mostly, but SDAG >>> too). >> >> MachineSched uses AA to determine if something is loop invariant, >> which basically boils down to looking at machine operand and see >> it's pointing to constant memory. I don't see how that's impact by >> GEP vs. ADDS + MUL. > > MachineSched can use AA for a lot more tha...

...>>>>> CodeGenPrep is run late, after AA is done. >>>> >>>> I don't know if this is relevant for Lim or not, but some targets >>>> use AA during CodeGen (instruction scheduling mostly, but SDAG >>>> too). >>> >>> MachineSched uses AA to determine if something is loop invariant, >>> which basically boils down to looking at machine operand and see >>> it's pointing to constant memory. I don't see how that's impact by >>> GEP vs. ADDS + MUL. >> >> MachineSched can use A...

...longer used. >> >> I don't follow your last statement. How does this impact AA? >> CodeGenPrep is run late, after AA is done. > > I don't know if this is relevant for Lim or not, but some targets use AA during CodeGen (instruction scheduling mostly, but SDAG too). MachineSched uses AA to determine if something is loop invariant, which basically boils down to looking at machine operand and see it's pointing to constant memory. I don't see how that's impact by GEP vs. ADDS + MUL. Also, the analysis should have already been done and cached. Evan > > -...

...deGenPrep is run late, after AA is done. >>>>> >>>>> I don't know if this is relevant for Lim or not, but some targets >>>>> use AA during CodeGen (instruction scheduling mostly, but SDAG >>>>> too). >>>> >>>> MachineSched uses AA to determine if something is loop invariant, >>>> which basically boils down to looking at machine operand and see >>>> it's pointing to constant memory. I don't see how that's impact by >>>> GEP vs. ADDS + MUL. >>> >>> Ma...

----- Original Message ----- > From: "Evan Cheng" <evan.cheng at apple.com> > To: "Junbum Lim" <junbums at gmail.com> > Cc: llvmdev at cs.uiuc.edu > Sent: Wednesday, November 20, 2013 7:01:49 PM > Subject: Re: [LLVMdev] sinking address computing in CodeGenPrepare > > > On Nov 20, 2013, at 3:10 PM, Junbum Lim <junbums at gmail.com>