[PATCH] D134893: [LSR][TTI][RISCV] Add isAllowTerminatingConditionFoldingAfterLSR into TTI and enable it for RISC-V

Thu Oct 13 02:26:02 PDT 2022

JojoR added a comment.

In D134893#3855134 <https://reviews.llvm.org/D134893#3855134>, @eopXD wrote:

> In D134893#3855128 <https://reviews.llvm.org/D134893#3855128>, @JojoR wrote:
>
>> I have a question about patch D132443 <https://reviews.llvm.org/D132443>, why do not you put optimization in pass "iv-users" ? I think it belongs to IV analyzation.
>>
>> because that the pass "iv-users" do analyzation only without any transformation ?
>
> IVUser is an analysis pass, and the LSR pass uses it before doing strength reduction.
> This transformation is beneficial after LSR, not before it.

Got it, thanks :)

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https://reviews.llvm.org/D134893