[Bug middle-end/42181] [4.5 Regression][graphite] -fgraphite-identity miscompiles air.f90

[spop at gcc dot gnu dot org]

------- Comment #28 from spop at gcc dot gnu dot org  2010-03-23 21:24 -------
I fixed this problem in CLooG-PPL: the code generated with 
the new version looks like the code generated by CLooG-ISL:

  for (c2=1;c2<=D.1554_10-3;c2++) {
    S1(c2);
    for (c4=0;c4<=c2-1;c4++) {
      S2(c2,c4);
      S3(c2,c4);
      S4(c2,c4);
    }
    S2(c2,c2);
    S4(c2,c2);
    for (c4=c2+1;c4<=D.1554_10-2;c4++) {
      S2(c2,c4);
      S3(c2,c4);
      S4(c2,c4);
    }
    S5(c2);
    S6(c2);
  }

I will bootstrap and test the graphite branch with the modified
version of CLooG-PPL and then if everything looks good,
I will prepare a new version CLooG-PPL-0.15.9 and I will 
upload it on ftp://gcc.gnu.org/pub/gcc/infrastructure/

Sebastian


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42181