http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58244
--- Comment #8 from Martin Konôpka ---
Yes, I understand now. Thanks. The lines with the sin() functions were not
evaluated with the local declaration. My apologies for reporting the false bug.
I will try to close the bug if I am allowed.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58244
--- Comment #6 from Martin Konôpka ---
(I am sorry that I do not understand internals of compilers.)
I first hit the issue in a bigger code having more than 11000 lines. First I
did not understand at all what is going on. I started to isolate the
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58244
--- Comment #5 from Martin Konôpka ---
I do not fully understand the question. In both cases I used the same
optimisation (-O2). My other comment a while ago was lost. I must retype it.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58244
--- Comment #2 from Martin Konôpka ---
It it is confirmed, it is a very serious performance issue. In my test the code
with the global declaration executed about 6 times slower than the code
with the local declaration.
For people doing HPC th
Component: regression
Assignee: unassigned at gcc dot gnu.org
Reporter: martin.konopka at stuba dot sk
Created attachment 30701
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30701&action=edit
sample C code to demonstrate the performance issue
* I have a very small samp
