[llvm-bugs] [Bug 20804] [EarlyCSE, Missed Opt] Prefer to remove later store where possible

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jul 19 11:07:21 PDT 2017


listmail at philipreames.com changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from listmail at philipreames.com ---
(In reply to Geoff Berry from comment #1)
> We can now remove the second load in the example when using MemorySSA.  Do
> you see any other potential benefit in trying to remove the first store
> instead of the second?
I think you misread the bug report.  This was suggesting we remove the second
store in favour of the first.

Having said that, the notion of "generation number" doesn't really apply with
MemorySSA.  Given that, I'm fine with closing this because the original
motivation would be addressed.

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