http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46970
Summary: [4.3/4.4/4.5/4.6 Regression] wrong code with -Os
-ftree-loop-linear
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Created attachment 22774
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22774
reduced testcase (from gcc.dg/pr29581-3.c)
Output:
$ gcc -Os -ftree-loop-linear pr46970.c
or
$ gcc -O -fno-tree-ch -ftree-loop-linear pr46970.c
(-Os implies -fno-tree-ch)
$ ./a.out
Aborted
Tested versions:
r167809 - fail
4.5.1 - fail
4.4.5 - fail
4.3.5 - fail
4.2.4 - ICE
4.1.2 - ICE
4.0.4 - OK
