[PATCH] Fix alignment of data in TypeLocs (PR16144)

[Sean Silva]

On Wed, Jun 5, 2013 at 8:06 PM, Eli Friedman <eli.friedman at gmail.com> wrote:

>
> (1) has a substantial impact on memory usage (something like 1% on
> Cocoa.h), so I'd like to avoid it if possible.
>

They must be a large fraction of our total memory if an alignment change
like that can cause such a large overall impact on memory usage. What
fraction of these TypeLoc's do we actually use?

Aren't TypeLoc's primarily used for diagnostics? (and I presume debug
info?) Why are we creating so many in the first place during a normal run
of the compiler? Could we generate them lazily?

-- Sean Silva
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