Alias analysis - does base_alias_check still work ?

[Jeff Law]

In message <20020719095446.A15598@redhat.com>, Richard Henderson writes:
 >On Fri, Jul 19, 2002 at 04:40:26PM +0200, Toon Moene wrote:
 >> Which begs the question: Is there a reason -fschedule-insns isn't on by
 >> default when using -O2 ?
 >
 >Yes.  The fact that the scheduler doesn't understand register
 >pressure means that pre-register-allocation scheduling generally
 >sucks eggs on x86.
True.  But the real reason -fschedule-insns isn't on by default for ia32
is the return register problem -- which I believe you actually fixed
a while back, but we haven't gone back to see if it's safe/profitable to
enable the first scheduling pass for ia32.

Jeff