This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Error handling after gimple statement insert.
So no one wastes time looking into this....
On Wed, Aug 15, 2012 at 10:54 AM, Matt Davis <mattdavis9@gmail.com> wrote:
> Hello,
> In my compiler pass, I am inserting a new gimple call statement, and
> then replacing the next call. This usually works fine, and after I do
> this, the gimple dump looks as I expect. However, in one case, I
> trigger gcc to abort in "remove_unreachable_handlers, at
> tree-eh.c:3524" this is for gcc 4.7.1. When I perform the
> gsi_insert() and gsi_replace() I maintain the EH data via setting the
> 'update_eh_info' argument to 'true' in the latter function call. The
> latter also updates the gimple statement, so I am really not sure what
> else I should be doing. Usually this works, but in one of my cases it
> is failing. I have not been able to pinpoint what is unique about the
> failing case. I am just looking for any insight.
I figured out what my code was doing. There are cases where I move
statements around, primarily a call statement. Anyways, this was in
fact occurring and the EH data was all bad. I have corrected my
logic, and consequentially have this bug fixed.
-Matt