Walter's talk on D backend

[Walter Bright]

On 9/23/2024 2:43 AM, claptrap wrote:
> How do you do dead code elimination in your backend? I mean if you have 3 
> assignments to X, and say 5 uses of X, how do you determine if any of the 
> assignments are redundant?

By using DFA (Data Flow Analysis).

https://github.com/dlang/dmd/blob/master/compiler/src/dmd/backend/gother.d#L1375

DMD does do all the conventional data flow analysis optimizations.