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| author | George Steed <george.steed@arm.com> | 2024-02-07 15:38:54 +0000 |
|---|---|---|
| committer | James Zern <jzern@google.com> | 2024-02-13 19:48:14 +0000 |
| commit | 9972ec4bdfbf4412b3ecafc9f76fc582080afbf8 (patch) | |
| tree | ecf4ae64a0d5967613781d75e329e3664e5ecd79 | |
| parent | 5f16a838d3f2236d2473d95d78e882f6d89f81bc (diff) | |
| download | libaom-9972ec4bdfbf4412b3ecafc9f76fc582080afbf8.tar.gz | |
aarch64_cpudetect.c: Don't read AT_HWCAPs if they are not needed
If FEAT_I8MM is not supported by the compiler then we do not test the
value from getauxval(AT_HWCAP2), leading to an unused variable warning.
To suppress this, only read the variable if we are going to use it,
which for now is only to check FEAT_I8MM. Also do similarly for AT_HWCAP
to match.
Bug: aomedia:3543
Change-Id: I855c255105cbfc448f64df317507dd9184731479
(cherry picked from commit 2036fbe2d8449c1054b4fb8bdf22c78f92655afc)
| -rw-r--r-- | aom_ports/aarch64_cpudetect.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/aom_ports/aarch64_cpudetect.c b/aom_ports/aarch64_cpudetect.c index 43d5a149c..13299a688 100644 --- a/aom_ports/aarch64_cpudetect.c +++ b/aom_ports/aarch64_cpudetect.c @@ -108,8 +108,13 @@ static int arm_get_cpu_caps(void) { static int arm_get_cpu_caps(void) { int flags = 0; +#if HAVE_ARM_CRC32 || HAVE_NEON_DOTPROD || HAVE_SVE unsigned long hwcap = getauxval(AT_HWCAP); +#endif +#if HAVE_NEON_I8MM unsigned long hwcap2 = getauxval(AT_HWCAP2); +#endif + #if HAVE_NEON flags |= HAS_NEON; // Neon is mandatory in Armv8.0-A. #endif // HAVE_NEON |