Treat arm64 as aarch64 for Apple M1.

[mtl1979]

See #1315.

[codecov]

Codecov Report

Merging #1316 (15301cd) into develop (a406284) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1316   +/-   ##
========================================
  Coverage    86.51%   86.51%           
========================================
  Files          125      125           
  Lines        10670    10670           
  Branches      2664     2664           
========================================
  Hits          9231     9231           
+ Misses        1081     1079    -2     
- Partials       358      360    +2     

Flag	Coverage Δ
macos_clang	32.60% <ø> (ø)
macos_gcc	73.88% <ø> (ø)
ubuntu_clang	85.19% <ø> (+0.13%)	⬆️
ubuntu_clang_debug	84.84% <ø> (ø)
ubuntu_clang_inflate_allow_invalid_dist	84.91% <ø> (ø)
ubuntu_clang_inflate_strict	85.02% <ø> (-0.14%)	⬇️
ubuntu_clang_mmap	85.34% <ø> (ø)
ubuntu_clang_pigz	40.08% <ø> (ø)
ubuntu_clang_pigz_no_optim	41.49% <ø> (ø)
ubuntu_clang_pigz_no_threads	39.67% <ø> (ø)
ubuntu_clang_reduced_mem	85.58% <ø> (ø)
ubuntu_gcc	75.69% <ø> (ø)
ubuntu_gcc_aarch64	77.41% <ø> (ø)
ubuntu_gcc_aarch64_compat_no_opt	75.75% <ø> (ø)
ubuntu_gcc_aarch64_no_acle	76.26% <ø> (ø)
ubuntu_gcc_aarch64_no_neon	76.30% <ø> (ø)
ubuntu_gcc_armhf	77.37% <ø> (ø)
ubuntu_gcc_armhf_compat_no_opt	75.60% <ø> (ø)
ubuntu_gcc_armhf_no_acle	77.37% <ø> (ø)
ubuntu_gcc_armhf_no_neon	77.26% <ø> (ø)
ubuntu_gcc_armsf	77.13% <ø> (ø)
ubuntu_gcc_armsf_compat_no_opt	75.28% <ø> (ø)
ubuntu_gcc_benchmark	74.13% <ø> (ø)
ubuntu_gcc_compat_no_opt	76.93% <ø> (ø)
ubuntu_gcc_compat_sprefix	74.20% <ø> (ø)
ubuntu_gcc_m32	73.57% <ø> (ø)
ubuntu_gcc_mingw_i686	0.00% <ø> (ø)
ubuntu_gcc_mingw_x86_64	0.00% <ø> (ø)
ubuntu_gcc_no_avx2	74.86% <ø> (ø)
ubuntu_gcc_no_ctz	74.95% <ø> (ø)
ubuntu_gcc_no_ctzll	74.98% <ø> (ø)
ubuntu_gcc_no_pclmulqdq	74.14% <ø> (ø)
ubuntu_gcc_no_sse2	75.02% <ø> (ø)
ubuntu_gcc_no_sse4	74.72% <ø> (-0.05%)	⬇️
ubuntu_gcc_o1	74.45% <ø> (ø)
ubuntu_gcc_osb	∅ <ø> (∅)
ubuntu_gcc_pigz	38.07% <ø> (ø)
ubuntu_gcc_pigz_aarch64	39.07% <ø> (-0.03%)	⬇️
ubuntu_gcc_ppc	73.65% <ø> (ø)
ubuntu_gcc_ppc64	74.52% <ø> (ø)
ubuntu_gcc_ppc64le	74.50% <ø> (ø)
ubuntu_gcc_ppc_no_power8	74.58% <ø> (ø)
ubuntu_gcc_s390x	74.91% <ø> (ø)
ubuntu_gcc_s390x_dfltcc	72.15% <ø> (ø)
ubuntu_gcc_s390x_dfltcc_compat	73.69% <ø> (ø)
ubuntu_gcc_s390x_no_crc32	74.70% <ø> (ø)
ubuntu_gcc_sparc64	74.81% <ø> (ø)
ubuntu_gcc_sprefix	73.72% <ø> (ø)
win64_gcc	74.03% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
gzlib.c	70.60% <0.00%> (ø)
test/minideflate.c	58.57% <0.00%> (ø)

---

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[nmoinvaz]

Can you add " for Apple M1" to the commit message?

[mtl1979]

Can you add " for Apple M1" to the commit message?

Done.

[mtl1979]

I added __arm64__ to the cmake detection code for completeness... Some Apple compilers use __aarch64__ and some compilers use __arm64__.

[Dead2]

Should arm64 be added to feature checks around the code as well perhaps?

[mtl1979]

Should arm64 be added to feature checks around the code as well perhaps?

I don't have Apple M1 hardware, so testing where changes are really needed isn't easy and as such was best to leave as separate PR. I don't like to clutter the code with extraneous preprocessor checks just for the sake of being consistent.