[FFmpeg-devel] [PATCH 1/5] configure: Add detection of RISC-V vector intrinsic support

[Arnie Chang]

Check whether the toolchain has support for RISC-V intrinsic and then
update the flag, HAVE_INTRINSICS_RVV, in the config.h

Signed-off-by: Arnie Chang <arnie.chang at sifive.com>
---
 configure | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure b/configure
index bb7be67676..883bee1e34 100755
--- a/configure
+++ b/configure
@@ -2210,6 +2210,7 @@ HEADERS_LIST="
 
 INTRINSICS_LIST="
     intrinsics_neon
+    intrinsics_rvv
 "
 
 MATH_FUNCS="
@@ -6119,6 +6120,7 @@ elif enabled ppc; then
 elif enabled riscv; then
 
     enabled rvv && check_inline_asm rvv '".option arch, +v\nvsetivli zero, 0, e8, m1, ta, ma"'
+    enabled rvv && check_cc intrinsics_rvv riscv_vector.h "int vl = __riscv_vsetvl_e8m1(8)"
 
 elif enabled x86; then
 
-- 
2.17.1