https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94988
Bug ID: 94988
Summary: [11 Regression] FAIL: gcc.target/i386/pr64110.c
scan-assembler vmovd[\\t ]
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: rguenther at suse dot de
Target Milestone: ---
commit 283cb9ea6293e813e48a1b769e1e0779918ea20a (r11-161)
Author: Richard Biener <rguent...@suse.de>
Date: Mon Apr 27 14:45:54 2020 +0200
tree-optimization/57359 - rewrite SM code
This rewrites store-motion to process candidates where we can
ensure order preserving separately and with no need to disambiguate
against all stores. Those candidates we cannot handle this way
are validated to be independent on all stores (w/o TBAA) and then
processed as "unordered" (all conditionally executed stores are so
as well).
This will necessary cause
FAIL: gcc.dg/graphite/pr80906.c scan-tree-dump graphite "isl AST to
Gimple succeeded"
because the SM previously performed is not valid for exactly the PR57359
reason, we still perform SM of qc for the innermost loop but that's not
enough.
There is still room for improvements because we still check some
constraints
for the order preserving cases that are only necessary in the current
strict way for the unordered ones. Leaving that for the furture.
caused:
FAIL: gcc.target/i386/pr64110.c scan-assembler vmovd[\\t ]
