On Fri, 2012-01-27 at 18:40 +0100, Michael Matz wrote:
> The hack below works in this specific situation (TERed into a switch), and
> adds a REG_EXPR when an TERed SSA name ever expanded into a pseudo (i.e.
> also for some more generic situations).
FYI, I bootstrapped and regtested your patch on
Great, thanks! Results are good on this specific test case. Seems like
a nice thing to add in 4.8.
On Fri, 2012-01-27 at 18:40 +0100, Michael Matz wrote:
> Hi,
>
> On Fri, 27 Jan 2012, William J. Schmidt wrote:
>
> >
> >
Hi,
On Fri, 27 Jan 2012, William J. Schmidt wrote:
>
> int
> test_switch_1 (unsigned int *index, int i)
> {
> switch (*index)
...
> However, for the first case, temporary expression replacement has
> effectively removed th
A member of our team was working on some switch statement optimizations,
and ran into a situation that seems a little curious on the face of it.
Consider these two test variants:
int
test_switch_1 (unsigned int *index, int i)
