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[Bug middle-end/32758] [4.3 Regression] ecj1 hangs
- From: "bonzini at gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 29 Aug 2007 14:14:16 -0000
- Subject: [Bug middle-end/32758] [4.3 Regression] ecj1 hangs
- References: <bug-32758-10129@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #28 from bonzini at gnu dot org 2007-08-29 14:14 -------
> Apparently dce is the only user of df_simulate_* which at the start of the
> basic block compares the resulting bitmap with DF_LR_IN.
Yes. The other two don't get infinite loops from their doing the wrong thing;
they just think some register is live and may miss some optimization.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32758