llvm dev - Aug 2017 - Inst->replaceAllUsesWith and uses in ConstantExpr

Hello all,
>From what I have observed, using `Inst->replaceAllUsesWith` does not
replace uses of the `Inst` in `ConstantExpr`s. Is there some way to have a
universal replaceAllUsesWith?


Thanks,
~Siddharth.
-- 
Sending this from my phone, please excuse any typos!
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On 16 August 2017 at 15:39, (IIIT) Siddharth Bhat via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> From what I have observed, using `Inst->replaceAllUsesWith` does not
replace
> uses of the `Inst` in `ConstantExpr`s. Is there some way to have a
universal
> replaceAllUsesWith?
Where are you seeing instructions used in ConstantExprs? That sounds
really dodgy to me. Instructions are horribly non-Constant so I'd have
thought it would be banned (even for technically plausible things like
"and(i32 %inst, 0)").

Cheers.

Tim.

Whoops, sorry, I meant "value->replaceAllUsesWith".

Should I create a new post with an updated title?

Thanks
Siddharth

On Thu 17 Aug, 2017, 01:05 Tim Northover <t.p.northover at gmail.com>
wrote:
> On 16 August 2017 at 15:39, (IIIT) Siddharth Bhat via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > From what I have observed, using `Inst->replaceAllUsesWith` does
not
> replace
> > uses of the `Inst` in `ConstantExpr`s. Is there some way to have a
> universal
> > replaceAllUsesWith?
>
> Where are you seeing instructions used in ConstantExprs? That sounds
> really dodgy to me. Instructions are horribly non-Constant so I'd have
> thought it would be banned (even for technically plausible things like
> "and(i32 %inst, 0)").
>
> Cheers.
>
> Tim.
>
-- 
Sending this from my phone, please excuse any typos!
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