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| author | Cosmin Truta <ctruta@gmail.com> | 2022-10-12 12:42:09 +0300 |
|---|---|---|
| committer | Cosmin Truta <ctruta@gmail.com> | 2022-10-12 12:42:09 +0300 |
| commit | b8ca9108acddfb9fb5d886f5e8a072ebaf436dbb (patch) | |
| tree | e59037e15ed3d6248768db27ad5fe737e43bcf89 | |
| parent | e56f79c0c6d94f5d727fc147d4487038e188cdf2 (diff) | |
| download | libpng-b8ca9108acddfb9fb5d886f5e8a072ebaf436dbb.tar.gz | |
arm: Add a compile-time assertion about PNG_ARM_NEON_CHECK_SUPPORTED
Following up on the previous commit by Martin Storsjö:
If the availability of ARM Neon is not only known at compile time,
but also expected by the compiler's target architecture, there should
be no further need for a run-time check. In fact, such a check would
be counter-productive.
| -rw-r--r-- | arm/arm_init.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arm/arm_init.c b/arm/arm_init.c index ab22525b3..84d05556f 100644 --- a/arm/arm_init.c +++ b/arm/arm_init.c @@ -36,7 +36,10 @@ #ifndef PNG_ARM_NEON_FILE # if defined(__aarch64__) || defined(_M_ARM64) /* ARM Neon is expected to be unconditionally available on ARM64. */ -# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this platform" +# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64" +# elif defined(__ARM_NEON__) || defined(__ARM_NEON) + /* ARM Neon is expected to be available on the target CPU architecture. */ +# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch" # elif defined(__linux__) # define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c" # else |