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EGCS Optimisation??
- To: <gnu-win32 at cygnus dot com>
- Subject: EGCS Optimisation??
- From: "Richard Lyon" <rlyon01 at ozemail dot com dot au>
- Date: Tue, 15 Dec 1998 01:04:19 +1100
Hi,
I am working on porting the omnetpp discrete-event simulator to cygwin. The
port is basically complete, with exception that some of the code won't
compile correctly when I turn on compiler optimisations. The simulator
startup modules compile and run with option -O0. But, when I turn on the
most basic optimisation -O1, the simulator executable dies with a status
access violation exception. Quickly checking with gdb, shows that some code
is running which should not be reachable. Manually
selecting -fthread-jumps, -fdefer-pop -fomit-frame-pointer doe not causes
any problems. I am using 20.1 on winnt 4.0 and SP4.
When -O1 is selected, what other optimisations are turned on? The gcc info
pages do not specify all
optimisations that are activated by -O1.
Regards .....
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