[Static Runtime] Added a variable for clamp in the NNC code for Logit. (#63839)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63839
Replaced the use of a constant for clamp in the NNC code for Logit
with a variable. This makes it easier to enable caching for Logit.
There is no performance difference with this change, as shown in the micro-benchmarks below.
```
Logit NNC Benchmark Time (ns)
const-clamp var-clamp
logit_nnc_sleef/64 550 543
logit_nnc_sleef/512 3514 3517
logit_nnc_sleef/8192 85537 82900
logit_nnc_sleef/32768 347635 337016
logit_nnc_fast/64 173 167
logit_nnc_fast/512 829 866
logit_nnc_fast/8192 13286 13069
logit_nnc_fast/32768 51116 53429
logit_nnc_vml/64 146 164
logit_nnc_vml/512 773 783
logit_nnc_vml/8192 11556 11563
logit_nnc_vml/32768 44815 46720
```
Test Plan: SR unit tests and the inline_cvr model.
Reviewed By: bertmaher
Differential Revision: D30405466
fbshipit-source-id: adb891fdae5746439931ce5f43165291fec08f52
