Command line:
gcc -O1 -ftree-loop-linear -fcompare-debug -c testcase.c
(fails at all -O1, -O2 and -O3 levels)
Tested revisions:
r156367 - crash
r155833 - crash
r154830 - crash
r153685 - crash
Output:
$ /mnt/svn/gcc-trunk/binary-156367-lto/bin/gcc -O1 -ftree-loop-linear
testcase.c -fcompare-debug
gcc: testcase.c: -fcompare-debug failure (length)
There is actually different code generated with -g, the outer loop isn't
removed. 4.4.2 generates the same code for both cases.
--
Summary: [4.5 Regression] "-fcompare-debug failure" with -ftree-
loop-linear
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zsojka at seznam dot cz
GCC host triplet: x86(_64)-pc-linux-gnu
GCC target triplet: x86(_64)-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42917
