https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78114
Bug ID: 78114
Summary: [7 regression]
gfortran.dg/vect/fast-math-mgrid-resid.f FAILs
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: amker at gcc dot gnu.org
Target Milestone: ---
Target: i?86-*-*
Between 20161011 and 20161013, the gfortran.dg/vect/fast-math-mgrid-resid.f
started
to FAIL
FAIL: gfortran.dg/vect/fast-math-mgrid-resid.f -O scan-tree-dump-times pcom
"Executing predictive commoning without unrolling" 2
for 32-bit x86 (seen on Solaris, Linux, and Darwin).
Most likely introduced by this patch:
changeset: 33495:0318d4fdc3ab
user: amker@138bc75d-0d04-0410-961f-82ee72b054a4
date: Thu Oct 13 11:05:53 2016 +0000
files: gcc/ChangeLog gcc/testsuite/ChangeLog
gcc/testsuite/gfortran.dg/vec
t/fast-math-mgrid-resid.f gcc/tree-predcom.c
description:
* tree-predcom.c (tree_predictive_commoning_loop): Skip loop that only
iterates 1 time.
gcc/testsuite
* gfortran.dg/vect/fast-math-mgrid-resid.f: New test string.
Rainer
