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[Bug middle-end/59409] [4.9 Regression] 253.perlbmk in SPEC CPU 2K is miscompiled


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59409

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
latch execution count can be an expression like "if (b)" in
gcc.dg/torture/pr59058.c.  Will such an expression be possible
negative at run-time?


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