configure: Add wasm as a fake arch

And add wasm simd128 flag, so we can add simd128 optimizations.
It can be enabled by put -msimd128 to extra cflags. There is
no runtime detection on simd128 support yet. I think that needs to
be done with JavaScript.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/libavutil/cpu_internal.h b/libavutil/cpu_internal.h
index 585a115c49..8dca62334a 100644
--- a/libavutil/cpu_internal.h
+++ b/libavutil/cpu_internal.h
@@ -49,6 +49,7 @@ int ff_get_cpu_flags_aarch64(void);
 int ff_get_cpu_flags_arm(void);
 int ff_get_cpu_flags_ppc(void);
 int ff_get_cpu_flags_riscv(void);
+int ff_get_cpu_flags_wasm(void);
 int ff_get_cpu_flags_x86(void);
 int ff_get_cpu_flags_loongarch(void);
 
@@ -56,6 +57,7 @@ size_t ff_get_cpu_max_align_mips(void);
 size_t ff_get_cpu_max_align_aarch64(void);
 size_t ff_get_cpu_max_align_arm(void);
 size_t ff_get_cpu_max_align_ppc(void);
+size_t ff_get_cpu_max_align_wasm(void);
 size_t ff_get_cpu_max_align_x86(void);
 size_t ff_get_cpu_max_align_loongarch(void);