This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/83141] SRA and memcpy folding interact badly generating wrong-code
- From: "jamborm at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 08 Dec 2017 12:11:33 +0000
- Subject: [Bug tree-optimization/83141] SRA and memcpy folding interact badly generating wrong-code
- Auto-submitted: auto-generated
- References: <bug-83141-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83141
--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Fri Dec 8 12:11:02 2017
New Revision: 255510
URL: https://gcc.gnu.org/viewcvs?rev=255510&root=gcc&view=rev
Log:
Prevent SRA from removing type changing assignment
2017-12-08 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/83141
* tree-sra.c (contains_vce_or_bfcref_p): Move up in the file, also
test for MEM_REFs implicitely changing types with padding. Remove
inline keyword.
(build_accesses_from_assign): Added contains_vce_or_bfcref_p checks.
testsuite/
* gcc.dg/tree-ssa/pr83141.c: New test.
* gcc.dg/guality/pr54970.c: XFAIL tests querying a[0].
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr83141.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/guality/pr54970.c
trunk/gcc/tree-sra.c