This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
-fssa-dce fails on HAVE_cc0 port?
- To: gcc at gcc dot gnu dot org
- Subject: -fssa-dce fails on HAVE_cc0 port?
- From: apl at alum dot mit dot edu
- Date: Mon, 2 Jul 2001 12:28:42 -0400 (EDT)
It looks like we're deleting CC0 setters in the SSA passes. This
results in the compiler crashing in cse when fold_rtx stumbles over
the fact that nobody set the cc0 value that's being tested for a
conditional branch.
If this is news to the SSA developers, I can see about providing a test
case.
I stumbled on this by asserting
-Os -fssa -fssa-dce
to the port I'm doing. I don't know if this will cause any released
ports to crash or not.
-- Al Lehotsky