http://llvm.org/bugs/show_bug.cgi?id=9152
Summary: File takes 1 minute to compile much longer than with
gcc or other similar files with llvm
Product: clang
Version: 2.7
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
In trying to build postgres there's one bison grammar that seems to take 1
minute to compile with clang. All the other files go by pretty quick but this
parser just seems to spin with 100% cpu for a minute.
I've attached the preprocessed source of the parser.
stark@raving:~/src$ time gcc -O2 -c -o preproc.o preproc.c
real 0m5.426s
user 0m5.230s
sys 0m0.150s
stark@raving:~/src$ time clang -O0 -c -o preproc.o preproc.c
real 0m1.146s
user 0m1.070s
sys 0m0.100s
stark@raving:~/src$ time clang -O1 -c -o preproc.o preproc.c
real 0m57.067s
user 0m56.820s
sys 0m0.210s
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