No neg in atomics #251

Job	Run time
abi-dump-setup	1m 52s
Test llvm,clang,libclc / Lit Tests (ubuntu-latest)	2h 34m 48s
Build lldb / Lit Tests (ubuntu-latest)	1h 46m 8s
Test lld / Lit Tests (ubuntu-latest)	55m 46s
Test llvm,clang,libclc / Lit Tests (windows-2019)	2m 20s
Test lld / Lit Tests (windows-2019)	2m 38s
Build lldb / Lit Tests (windows-2019)	2m 24s
Test llvm,clang,libclc / Lit Tests (macOS-latest)	2h 22m 29s
Build lldb / Lit Tests (macOS-latest)	1h 20m 16s
Test lld / Lit Tests (macOS-latest)	46m 4s
abi-dump (build-baseline)	33m 54s
abi-dump (build-latest)	32m 35s
abi-compare	57s
	11h 2m 11s

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