[PATCH] D129715: [LoongArch] Heuristically load FP immediates by movgr2fr from materialized integer

[Gong LingQin via Phabricator via llvm-commits]

gonglingqin added a comment.

In D129715#3656776 <https://reviews.llvm.org/D129715#3656776>, @gonglingqin wrote:

> In D129715#3654612 <https://reviews.llvm.org/D129715#3654612>, @xen0n wrote:
>
>> I think some assembly comparison could go a long way, but again, SPEC2006 is *horribly outdated* so actually IMO the argument for 3-instruction threshold would be a lot stronger if you could replicate this result on some more recent or comprehensive benchmark suites. (PTS or newer SPEC are all better than SPEC2006 in this regard.)
>
> Thanks,  I will test other benchmark sets.

I used `cpu2017(fortran excluded)` to test the performance in 5 cases,

1. using constant pool,
2. materialized integer with 1 instruction,
3. materialized integer within 2 instructions,
4. materialized integer within 3 instructions,
5. materialized integer within 4 instructions.

(Tests were run three times for each condition and the scores were geometrically averaged). 
The results showed no change in the scores for the 5 cases. @xen0n, @xry111, do you have any suggestions?


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