Optimize equality tests with known literals #3125

Job	Run time
Event File	2s
Build Erlang/OTP (64-bit)	16m 23s
Build Erlang/OTP (macOS)	6m 45s
Build Erlang/OTP (32-bit)	8m 47s
Build Erlang/OTP (iOS)	6m 32s
Build Erlang/OTP (Types and Flavors)	8m 46s
Build Erlang/OTP (cross-compile)	14m 12s
Build Erlang/OTP (clang)	5m 46s
Build Erlang/OTP (Windows)	11m 57s
Build and check documentation	8m 34s
Run static analysis	6m 59s
Test Erlang/OTP (emulator)	45m 26s
Test Erlang/OTP (debug)	5m 11s
Test Erlang/OTP (crypto)	5m 18s
Release Erlang/OTP	0s
Test Erlang/OTP (system)	9m 24s
	2h 40m 2s

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