[Bug middle-end/38474] slow compilation at -O0 (callgraph optimization, inline heuristics, expand )

[jv244 at cam dot ac dot uk]

------- Comment #11 from jv244 at cam dot ac dot uk  2008-12-15 19:38 -------
as this file is included in a project compiled normally with '-O3 -march=native
-funroll-loops' the timing in that case is also important. As I'm finding out,
this becomes unworkable (>6h, and still compiling).

Looking at -fdump-tree-original, the overloaded operators (+,-,..) expand to
function call, leading to a subroutine which contains 73000 function calls. So,
likely that some stuff is scaling at least quadratically wrt to this parameter.


-- 

jv244 at cam dot ac dot uk changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38474