[llvm] [AMDGPU][AggressiveInstCombine] Narrow 64 bit math to 32 bit if profitable (PR #130577)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> > > Hi @dtcxzyw , I'm a little bit confusing about the link posted, are you saying that function `@src` is equivalent to function `@tgt`??
> > 
> > 
> > No. I mean `@src` can be optimized into `@tgt`.
> 
> Hi @dtcxzyw with trunc and sext yes, but with the cases added there is no trunc or sext in them.....

We don't need trunc. These trunc instructions in `@src` are used to make sure that both `%x` and `%y` have at least 10 sign bits.


https://github.com/llvm/llvm-project/pull/130577