On 07/28/2011 12:02 PM, David Edelsohn wrote: > The other problem is hoisting the store into the prologue is not > always profitable for performance. It should be better once shrink > wrapping is implemented. Currently the PPC ABI may perform a lot of > stores in the prologue if the function *may* make a call. R2 adds yet > another store to the common path.
Well, even if we're not able to hoist the R2 store, we may be able to simply add REG_CFA_OFFSET and REG_CFA_RESTORE notes to the insns in the stream. r~
