[Bug rtl-optimization/55489] New: [4.7 regression] insane PRE memory usage with PIE (translate.i)

[bonzini at gnu dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55489



             Bug #: 55489

           Summary: [4.7 regression] insane PRE memory usage with PIE

                    (translate.i)

    Classification: Unclassified

           Product: gcc

           Version: 4.7.2

            Status: UNCONFIRMED

          Keywords: memory-hog

          Severity: normal

          Priority: P3

         Component: rtl-optimization

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: bonz...@gnu.org





Created attachment 28793

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28793

gzipped preprocessed source



Yet another evil testcase, this time for RTL GCSE.  Compile with:



$ gcc ~/translate.i -g -O2 -fPIE



gcc 4.4.6:

 PRE :   3.83 (24%) usr   0.15 (17%) sys   3.99 (24%) wall  267307 kB (33%) ggc



gcc 4.7.2:

 PRE :   7.95 (41%) usr   0.40 (40%) sys   8.31 (41%) wall  821017 kB (80%) ggc



Fixed, or latent in trunk:



gcc 4.8.0:

 PRE :   6.94 (26%) usr   0.02 ( 4%) sys   6.98 (26%) wall     731 kB ( 0%) ggc