[cfe-dev] Huge slowdown introduced in r91449

Abramo Bagnara abramobagnara at tin.it
Sat Dec 26 03:06:02 PST 2009

Tracking a slowdown observed after a clang update, I've bisected the
problem to commit r91449.

$ ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c

real	0m3.683s
user	0m3.354s
sys	0m0.325s

$ time ~/llvm_opt/Release/bin/clang -w -fsyntax-only gcc.c

real	0m38.764s
user	0m38.378s
sys	0m0.374s

The very large source file gcc.c (22 MB) is from:


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