Message ID | 20230714163448.31727-2-remi@remlab.net |
---|---|
State | Accepted |
Commit | f03223495385f64e11b29b5a51fcef2a93627184 |
Headers | show |
Series | [FFmpeg-devel,1/2] lavc/aarch64: remove bogus HAVE_VFP guard | expand |
Context | Check | Description |
---|---|---|
yinshiyou/make_loongarch64 | success | Make finished |
yinshiyou/make_fate_loongarch64 | success | Make fate finished |
andriy/make_x86 | success | Make finished |
andriy/make_fate_x86 | success | Make fate finished |
On Fri, 14 Jul 2023, Rémi Denis-Courmont wrote: > This is not actually used for anything. The configure check causes the > CPU feature flag to be set, but nothing consumes it at all. > > While AArch64 does have VFP, it is only used for the scalar C code. > Conversely, it is still possible to disable VFP, by changing the > C compiler flags as before (though that only makes sense for an > hypothetical non-standard Armv8 platform without VFP). > > Note that this retains the "vfp" option flag, for backward > compatibility and on the very remote but theoretically possible chance > that FFmpeg actually makes use of it in the future. > > AV_CPU_FLAG_VFP is retained as it is actually used by AArch32. > --- > configure | 4 +--- > libavutil/aarch64/cpu.c | 3 +-- > 2 files changed, 2 insertions(+), 5 deletions(-) LGTM for both patches. // Martin
diff --git a/configure b/configure index 0ab0761011..dab3fb9036 100755 --- a/configure +++ b/configure @@ -2668,7 +2668,7 @@ armv6t2_deps="arm" armv8_deps="aarch64" neon_deps_any="aarch64 arm" intrinsics_neon_deps="neon" -vfp_deps_any="aarch64 arm" +vfp_deps="arm" vfpv3_deps="vfp" setend_deps="arm" dotprod_deps="aarch64 neon" @@ -6058,7 +6058,6 @@ if enabled aarch64; then enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]' # internal assembler in clang 3.3 does not support this instruction enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1' - enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2' archext_list="dotprod i8mm" enabled dotprod && check_archext_insn dotprod 'udot v0.4s, v0.16b, v0.16b' @@ -7705,7 +7704,6 @@ if enabled x86; then fi if enabled aarch64; then echo "NEON enabled ${neon-no}" - echo "VFP enabled ${vfp-no}" echo "DOTPROD enabled ${dotprod-no}" echo "I8MM enabled ${i8mm-no}" fi diff --git a/libavutil/aarch64/cpu.c b/libavutil/aarch64/cpu.c index a8cb301dd7..2803b31443 100644 --- a/libavutil/aarch64/cpu.c +++ b/libavutil/aarch64/cpu.c @@ -107,8 +107,7 @@ static int detect_flags(void) int ff_get_cpu_flags_aarch64(void) { int flags = AV_CPU_FLAG_ARMV8 * HAVE_ARMV8 | - AV_CPU_FLAG_NEON * HAVE_NEON | - AV_CPU_FLAG_VFP * HAVE_VFP; + AV_CPU_FLAG_NEON * HAVE_NEON; #ifdef __ARM_FEATURE_DOTPROD flags |= AV_CPU_FLAG_DOTPROD;