[RFT] fwprop merge

[Serge Belyshev]

Steven Bosscher <stevenb.gcc@gmail.com> writes:

> On Sunday 14 May 2006 02:13, Steven Bosscher wrote:
...
> David, Richard, could you give these patches a re-try on SPEC please?

176.gcc fails to compile on an amd64 host with -O3 -funroll-loops. (infinite loop after fwprop)
Here is partially reduced testcase:

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