[Bug tree-optimization/37709] [4.4 Regression] inliner gone crazy

[jakub at gcc dot gnu dot org]

------- Comment #6 from jakub at gcc dot gnu dot org  2008-10-02 14:26 -------
The difference is mainly that HEAD inlines all func_* calls, while 4.3 keeps
many of them around (I see 30 call func_* insns in 4.3).  The 4.4 .text is
about half the size of 4.3 .text (i.e. inliner did much better job), but the
emitted
.debug_info is in 4.4 13MB compared to 12KB in 4.3 generated code.
You need 7GB of RAM to compile this successfully.

In theory, by using a more compact representation of BLOCK nodes we could store
them in ~ 13MB (as that's how it is possible to encode it in DWARF3).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37709