macurtis-amd d1a6eaa478 [Attributor][NFC] Performance improvements (#122923) ...

` forallInterferingAccesses` is a hotspot and for large modules these
changes make a measurable improvement in compilation time.

For LTO kernel compilation of 519.clvleaf (SPEChpc 2021) I measured the
following:
```
                    |   Measured times (s)   | Average | speedup
--------------------+------------------------+---------+---------
Baseline            | 33.268  33.332  33.275 |  33.292 |      0%
Cache "kernel"      | 30.543  30.339  30.607 |  30.496 |    9.2%
templatize callback | 30.981  30.97   30.964 |  30.972 |    7.5%
Both changes        | 29.284  29.201  29.053 |  29.179 |   14.1%
```

2025-01-14 12:51:25 -06:00

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