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[Bug optimization/14863] [3.4 regression] unit-at-a-time causes miscompilation
- From: "1319 at bot dot ru" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Apr 2004 11:55:57 -0000
- Subject: [Bug optimization/14863] [3.4 regression] unit-at-a-time causes miscompilation
- References: <20040406114325.14863.rguenth@tat.physik.uni-tuebingen.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From 1319 at bot dot ru 2004-04-07 11:55 -------
I have just found that this bug can be triggered on/off using --param
large-function-insns=<something> option. Default value of this changed from
10000 before gcc-3_4-branch creation to 3000 shortly after.
All versions of 3.4.0 and 3.5.0 I tried (20040116..now) are OK with '-O1
-funit-at-a-time --param large-function-insns=10000' and all failed with '-O1
-funit-at-a-time --param large-function-insns=3000'.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14863