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Re: optimization/9553: No induction variable elimination
- From: ebotcazou at gcc dot gnu dot org
- To: binsh00 at hotmail dot com, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org
- Date: 18 Feb 2003 08:14:53 -0000
- Subject: Re: optimization/9553: No induction variable elimination
- Reply-to: ebotcazou at gcc dot gnu dot org, binsh00 at hotmail dot com, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: No induction variable elimination
State-Changed-From-To: open->analyzed
State-Changed-By: ebotcazou
State-Changed-When: Tue Feb 18 08:14:53 2003
State-Changed-Why:
Confirmed. GCC doesn't know how to prove that two (independent)
basic induction variables are equal throughout the whole loop.
I'm not sure whether that would be really useful in practice though.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9553