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This is GCC Bugzilla Version 2.20+
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The new DFA scheduler for ia64 doesn't work well for Merced (Itanium 1). gcc 3.4 failed to compile 2.6 Linux kernel configured for Merced. Here are some bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15598 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15653 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15655 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16130 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16142
Confirmed.
Add bug 16414.
Add bug 16445.
Can this one be closed yet? Are you still looking for more problems?
I built a 2.6.7 Linux kernel configured for Itanium 1 with the current gcc 3.4. The kernel booted and I didn't notice any issues.