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[Bug target/67462] [6 Regression] FAIL: gcc.dg/ifcvt-3.c scan-rtl-dump ce1 "3 true changes made"
- From: "bernds at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 09 Jan 2016 14:31:17 +0000
- Subject: [Bug target/67462] [6 Regression] FAIL: gcc.dg/ifcvt-3.c scan-rtl-dump ce1 "3 true changes made"
- Auto-submitted: auto-generated
- References: <bug-67462-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67462
--- Comment #6 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
That does look dodgy. It's also really old, from when rtx_cost was part of
cse.c. Kenner added it along with many other changes in r754 in 1992.
See what happens to codegen if you just strip SUBREGs before this switch and
lose the MODES_TIEABLE thing?