[Bug optimization/14279] delete_null_pointer_checks removes live insn

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-02-26 03:35 -------
I forgot the PR number on the changelog.  Fixed mainline with
Log message:
	* gcse.c (delete_null_pointer_checks_1): Do not delete CC setter
	unless HAVE_cc0.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.2931&r2=2.2932
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&r1=1.292&r2=1.293


Fixed gcc-3.4 with
Log message:
	* gcse.c (delete_null_pointer_checks_1): Set stop_insn to end, not
	beginning of block.  Do not delete CC setter unless HAVE_cc0.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.257&r2=2.2326.2.258
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.288.2.2&r2=1.288.2.3


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|3.3.3 3.4.0 3.5.0           |3.3.3
      Known to work|                            |3.4.0 3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14279