On Thu, Mar 29, 2007 at 09:38:02PM -0700, Ian Lance Taylor wrote: > 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?
I would worry about any time that two statements are combined and then later separated, thus losing line information from one of them. At the gimple level, that's less likely - in GENERIC or higher, more likely. See the PR for a case where the current approach would even require locations on constants. And that's obviously infeasible, so... -- Daniel Jacobowitz CodeSourcery
