cmd/compile: update PGO profile

cmd/compile: update PGO profile

Since last time the default.pgo profile is collected, there has
been a lot of development in the compiler. It's time to refresh
the compiler's PGO profile.

Profile collected by running the cmd/compile/profile.sh script on
the gotip-linux-amd64_c3h88-perf_vs_release gomote.

Benchmark results on Linux/AMD64:

         │  nopgo.txt   │              old.txt               │              new.txt               │
         │    sec/op    │   sec/op     vs base               │   sec/op     vs base               │
Template    120.7m ± 0%   118.1m ± 0%  -2.17% (p=0.000 n=20)   116.5m ± 0%  -3.46% (p=0.000 n=20)
Unicode    104.59m ± 0%   99.05m ± 0%  -5.29% (p=0.000 n=20)   99.30m ± 1%  -5.06% (p=0.000 n=20)
GoTypes     676.8m ± 0%   662.3m ± 0%  -2.15% (p=0.000 n=20)   650.8m ± 0%  -3.85% (p=0.000 n=20)
Compiler    96.29m ± 1%   91.85m ± 1%  -4.61% (p=0.000 n=20)   90.44m ± 1%  -6.08% (p=0.000 n=20)
SSA          5.185 ± 0%    5.038 ± 0%  -2.83% (p=0.000 n=20)    4.945 ± 0%  -4.64% (p=0.000 n=20)
Flate       69.00m ± 0%   67.39m ± 0%  -2.33% (p=0.000 n=20)   66.60m ± 0%  -3.48% (p=0.000 n=20)
GoParser    143.3m ± 0%   140.6m ± 1%  -1.89% (p=0.000 n=20)   138.3m ± 1%  -3.46% (p=0.000 n=20)
Reflect     310.0m ± 1%   305.1m ± 0%  -1.56% (p=0.000 n=20)   298.2m ± 1%  -3.79% (p=0.000 n=20)
Tar         109.5m ± 0%   107.5m ± 1%  -1.79% (p=0.000 n=20)   106.0m ± 0%  -3.18% (p=0.000 n=20)
XML         147.6m ± 1%   144.2m ± 0%  -2.31% (p=0.000 n=20)   142.0m ± 0%  -3.83% (p=0.000 n=20)
geomean     215.0m        209.2m       -2.70%                  206.2m       -4.09%

For #60234.

Change-Id: Iee853146f120ce310c81aabfccf6e5665e6d8b65
Reviewed-on: https://go-review.googlesource.com/c/go/+/587195
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>