lavc/huffyuvdsp: optimise RVV vtype for add_hfyu_left_pred_bgr32

T-Head C908: add_hfyu_left_pred_bgr32_c: 237.5 add_hfyu_left_pred_bgr32_rvv_i32: 173.5 (before) add_hfyu_left_pred_bgr32_rvv_i32: 110.0 (after)

Rémi Denis-Courmont committed 2 years ago

Commit 463c5731 parent 233066e2 files · +6 −3Browse files

Showing the changes to libavcodec (2 of 2 files). Show all

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@@ -35,7 +35,8 @@ av_cold void ff_huffyuvdsp_init_riscv(HuffYUVDSPContext *c, · 34 unmodified lines
35		35
36	if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {	36	if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
37	c->add_int16 = ff_add_int16_rvv;	37	c->add_int16 = ff_add_int16_rvv;
38	c->add_hfyu_left_pred_bgr32 = ff_add_hfyu_left_pred_bgr32_rvv;	38	if (flags & AV_CPU_FLAG_RVB_BASIC)
		39	c->add_hfyu_left_pred_bgr32 = ff_add_hfyu_left_pred_bgr32_rvv;
39	}	40	}
40	#endif	41	#endif
41	}	42	}

         ret
 endfunc
-func ff_add_hfyu_left_pred_bgr32_rvv, zve32x
+func ff_add_hfyu_left_pred_bgr32_rvv, zve32x, zbb
-        vsetivli zero, 4, e8, m1, ta, ma
+        vtype_ivli t1, 4, e8, ta, ma
+        li      t0, 4
+        vsetvl  zero, t0, t1
         vle8.v  v8, (a3)
         sh2add  a2, a2, a1
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