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[Bug gcov-profile/30650] [4.3 Regression] ICE with -fprofile-use
- From: "hubicka at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Feb 2007 01:24:50 -0000
- Subject: [Bug gcov-profile/30650] [4.3 Regression] ICE with -fprofile-use
- References: <bug-30650-13404@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from hubicka at gcc dot gnu dot org 2007-02-14 01:24 -------
Hi,
the reason is -msse3 that is supposed to be at both invocations. -msse3
enables the SSE builtins that do change declarations UIDs that in turn changes
function names:
< ;; Function ddx (ddx.1401)
---
> ;; Function ddx (ddx.1390)
so profiles can't match. While it is possible to ignore the SSA names, I don't
think there is actual need to mess with this - the use of different swtiches
that do affect input language clearly can't be much accepted in between train
and compilation run
(I am hoping that optimization switches like -funroll-loops will run, but for
language features, like SSE is we will get different divergences anyway)
The other problem was fixed, so I am closing the PR.
Honza
--
hubicka at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30650