[Bug rtl-optimization/37377] [4.4 Regression] Bootstrap failure compiling libgcc

[ebotcazou at gcc dot gnu dot org]

------- Comment #8 from ebotcazou at gcc dot gnu dot org  2008-09-07 13:58 -------
> See
>
> http://gcc.gnu.org/ml/gcc-testresults/2008-09/msg00384.html
> 
> Mainline can bootstrap with i586-linux. But there are some additional
> testsuite failures.

Thanks for trying to reproduce, this is very helpful.  I'm sorry, I forgot
something: you must configure with RTL checking (--enable-checking=yes,rtl)
in order to have the miscompilation.

I'm going to attach a simplified testcase (which can be compiled by any x86
compiler) and the analysis.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37377