[Bug c++/65328] GCC perf issue when compiling templates - 120x slower than Clang

[juchem at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65328

--- Comment #7 from juchem at gmail dot com ---
Created attachment 34969
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34969&action=edit
FWIW, preprocessed file from clang 3.4

generated with:

$ time clang++-3.4 -Wall -std=c++11 -E -I .
fatal/type/benchmark/prefix_tree_benchmark.cpp > clang-3.4-preprocessed.cpp

real    0m0.224s
user    0m0.188s
sys     0m0.028s