Closed
Description
it seems to be a recent regression from 20.1.0
clang version 21.0.0git (https://github.com/llvm/llvm-project.git da17ced11b1cf44b433cb2b850978df4b6bff279)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/home/kchopra/llvm-project/build/bin
Build config: +assertions
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/13
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/13
Candidate multilib: .;@m64
Selected multilib: .;@m64
kchopra@ast-epyc5:~$ time clangtk -O2 small.c
real 0m5.232s
user 0m5.189s
sys 0m0.035s
kchopra@ast-epyc5:~$ cat small
small small.c small.c.orig small.o small_fuzzed.csv
kchopra@ast-epyc5:~$ cat small.
small.c small.c.orig small.o
kchopra@ast-epyc5:~$ cat small.c
int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p;
int main() {
l = e;
if (b * d >= 0)
goto q;
goto x;
r:
if (d * e)
goto s;
l = f;
goto t;
u:
b = f;
if (k)
goto v;
w:
if (d)
goto r;
goto aa;
y:
if (e)
goto v;
aa:
n = g;
ab:
if (g >= 0)
goto ac;
t:
if (h >= 0)
goto ad;
s:
if (n)
goto ab;
h = d;
if (b * o)
goto y;
ac:
if (f)
goto x;
goto ae;
q:
a = 1;
if (f * o >= 0)
goto ab;
goto af;
v:
e = j + 3;
if (b)
goto ag;
ah:
goto ai;
ag:
d = g + 2;
if (g)
goto u;
ad:
if (f)
goto ah;
af:
c = h * g + b;
if (i)
goto r;
o = d;
ai:
if (a * b * o)
goto w;
x:
p = l + o;
ae:
m = e * g;
if (f * a)
goto t;
}