| commit | 560934d2861093df1c126ca28776c54779bb5aa6 | |
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 16 May 2018 13:02:27 +0000 (16 13:02 +0000) | ||
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 16 May 2018 13:02:27 +0000 (16 13:02 +0000) | ||
| tree | 458fa57074883441e57ab838c7d5537943e23ee7 | treesnapshot (tar.gz zip) |
| parent | 187ee2a2583d1a9657939e3cc31db05f1cfca04c | commitdiff |
2018-05-16 Richard Biener <rguenther@suse.de>
* params.def (PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE): New param.
* doc/invoke.texi (dse-max-alias-queries-per-store): Document.
* tree-ssa-dse.c: Include tree-ssa-loop.h.
(check_name): New callback.
(dse_classify_store): Track cycles via a visited bitmap of PHI
defs and simplify handling of in-loop and across loop dead stores
and properly fail for loop-variant refs. Handle byte-tracking with
multiple defs. Use PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE for
limiting the walk.
* gcc.dg/tree-ssa/ssa-dse-32.c: New testcase.
* gcc.dg/tree-ssa/ssa-dse-33.c: Likewise.
* gcc.dg/uninit-pr81897-2.c: Use -fno-tree-dse.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260288 138bc75d-0d04-0410-961f-82ee72b054a4
* params.def (PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE): New param.
* doc/invoke.texi (dse-max-alias-queries-per-store): Document.
* tree-ssa-dse.c: Include tree-ssa-loop.h.
(check_name): New callback.
(dse_classify_store): Track cycles via a visited bitmap of PHI
defs and simplify handling of in-loop and across loop dead stores
and properly fail for loop-variant refs. Handle byte-tracking with
multiple defs. Use PARAM_DSE_MAX_ALIAS_QUERIES_PER_STORE for
limiting the walk.
* gcc.dg/tree-ssa/ssa-dse-32.c: New testcase.
* gcc.dg/tree-ssa/ssa-dse-33.c: Likewise.
* gcc.dg/uninit-pr81897-2.c: Use -fno-tree-dse.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260288 138bc75d-0d04-0410-961f-82ee72b054a4