cmd/compile: update default 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   110.4m ± 2%   108.4m ± 1%       ~ (p=0.121 n=20)   107.8m ± 1%  -2.37% (p=0.006 n=20)
Unicode    98.78m ± 0%   95.16m ± 1%  -3.67% (p=0.000 n=20)   93.87m ± 1%  -4.98% (p=0.000 n=20)
GoTypes    553.8m ± 0%   548.3m ± 0%  -0.99% (p=0.000 n=20)   542.1m ± 0%  -2.11% (p=0.000 n=20)
Compiler   88.12m ± 1%   83.22m ± 1%  -5.56% (p=0.000 n=20)   81.81m ± 1%  -7.17% (p=0.000 n=20)
SSA         3.592 ± 1%    3.499 ± 0%  -2.58% (p=0.000 n=20)    3.445 ± 0%  -4.08% (p=0.000 n=20)
Flate      64.48m ± 1%   64.99m ± 1%       ~ (p=0.341 n=20)   63.10m ± 2%  -2.15% (p=0.000 n=20)
GoParser   129.8m ± 1%   127.3m ± 1%  -1.88% (p=0.004 n=20)   126.2m ± 1%  -2.75% (p=0.000 n=20)
Reflect    286.0m ± 1%   282.3m ± 1%  -1.30% (p=0.000 n=20)   280.1m ± 1%  -2.06% (p=0.000 n=20)
Tar        129.3m ± 1%   128.4m ± 2%       ~ (p=0.565 n=20)   126.3m ± 1%  -2.32% (p=0.000 n=20)
XML        152.1m ± 1%   148.2m ± 1%  -2.55% (p=0.000 n=20)   147.9m ± 1%  -2.79% (p=0.000 n=20)
geomean    197.4m        193.4m       -2.04%                  190.9m       -3.29%

On Linux/ARM64:

         │  nopgo.txt  │              old.txt               │              new.txt               │
         │   sec/op    │   sec/op     vs base               │   sec/op     vs base               │
Template   80.78m ± 2%   78.78m ± 1%  -2.47% (p=0.000 n=20)   78.15m ± 1%  -3.25% (p=0.000 n=20)
Unicode    80.57m ± 1%   75.79m ± 1%  -5.94% (p=0.000 n=20)   74.85m ± 0%  -7.11% (p=0.000 n=20)
GoTypes    426.4m ± 0%   416.1m ± 0%  -2.42% (p=0.000 n=20)   411.0m ± 0%  -3.62% (p=0.000 n=20)
Compiler   66.54m ± 1%   64.01m ± 1%  -3.79% (p=0.000 n=20)   62.86m ± 1%  -5.53% (p=0.000 n=20)
SSA         2.905 ± 0%    2.772 ± 0%  -4.56% (p=0.000 n=20)    2.759 ± 0%  -5.01% (p=0.000 n=20)
Flate      46.68m ± 0%   45.40m ± 1%  -2.75% (p=0.000 n=20)   45.20m ± 0%  -3.16% (p=0.000 n=20)
GoParser   95.17m ± 1%   93.54m ± 1%  -1.71% (p=0.000 n=20)   92.50m ± 0%  -2.80% (p=0.000 n=20)
Reflect    212.4m ± 0%   206.6m ± 1%  -2.72% (p=0.000 n=20)   205.4m ± 1%  -3.31% (p=0.000 n=20)
Tar        95.64m ± 1%   93.19m ± 1%  -2.57% (p=0.000 n=20)   92.55m ± 0%  -3.23% (p=0.000 n=20)
XML        111.0m ± 0%   108.0m ± 1%  -2.67% (p=0.000 n=20)   107.2m ± 1%  -3.38% (p=0.000 n=20)
geomean    148.9m        144.2m       -3.17%                  142.9m       -4.05%

For #60234.

Change-Id: I6c4f0609ba578a2848ce6cfcc748dfdda7222182
Reviewed-on: https://go-review.googlesource.com/c/go/+/677375
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Author: cherrymui