add vrev8.v byteswap

camel-cdr · Aug 17, 2024 · 92b2e5a · 92b2e5a
1 parent d4ffade
commit 92b2e5a
Show file tree

Hide file tree

Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/bench/byteswap.S b/bench/byteswap.S
@@ -1,4 +1,20 @@
 #if HAS_RVV_1_0
+
+#ifdef MX
+.global MX(byteswap32_rvv_vrev8_)
+MX(byteswap32_rvv_vrev8_):
+1:
+	vsetvli t0, a1, e32, MX(), ta, ma
+	vle32.v v0, (a0)
+	vrev8.v v8, v0
+	vse32.v v8, (a0)
+	sub a1, a1, t0
+	slli t1, t0, 2
+	add a0, a0, t1
+	bnez a1, 1b
+	ret
+#endif
+
 #if MX_N == 4 || MX_N == 2 || MX_N == 1
 
 # a0 = ptr, a1 = len

diff --git a/bench/byteswap.c b/bench/byteswap.c
@@ -45,6 +45,7 @@ byteswap32_SWAR_rev8(uint32_t *ptr, size_t n)
 #define IMPLS_RVV(f)
 #else
 #define IMPLS_RVV(f) \
+	MX(f,rvv_vrev8) \
 	f(rvv_gatherei16_m1) \
 	f(rvv_gatherei16_m2) \
 	f(rvv_gatherei16_m4) \