"Andrew Pinski" <[EMAIL PROTECTED]> writes: > On 29 Mar 2007 18:24:56 -0700, Ian Lance Taylor <[EMAIL PROTECTED]> wrote: > > Why will expressions have location? It seems to me preferable to save > > the memory. After a few optimization passes many of the expressions > > have no location anyhow. > > And I know from past experiences, that this is really a bug that they > don't produce expressions with locations. I remember Daniel Berlin > was talking about how SRA does the correct thing with respect of > locations and other passes should really follow that. We can see how > out of SSA can produce cases where PHIs would create expressions > without locations but that is a bug (I cannot find the PR right now > but Daniel J. filed it).
Provided we keep locations on statements, specifically including GIMPLE_MODIFY_EXPR, does it really help us to keep locations on expressions within statements in optimized code? What could the debugger do with that information, in principle, that would be helpful? Ian
