Re: [PATCH] lower-bitint: Fix arithmetics followed by extension by many bits [PR112809]

On Tue, 5 Dec 2023, Jakub Jelinek wrote: > Hi! > > A zero or sign extension from result of some upwards_2limb operation > is implemented in lower_mergeable_stmt as an extra loop which fills in > the extra bits with 0s or 1s. > If the delta of extended vs. unextended bit count is small, the code >

[PATCH] lower-bitint: Fix arithmetics followed by extension by many bits [PR112809]

Hi! A zero or sign extension from result of some upwards_2limb operation is implemented in lower_mergeable_stmt as an extra loop which fills in the extra bits with 0s or 1s. If the delta of extended vs. unextended bit count is small, the code doesn't use a loop and emits up to a couple of stores t