diff mbox series

[v2] target/riscv: Fix vcompress with rvv_ta_all_1s

Message ID 20241030043538.939712-1-antonb@tenstorrent.com (mailing list archive)
State New
Headers show
Series [v2] target/riscv: Fix vcompress with rvv_ta_all_1s | expand

Commit Message

Anton Blanchard Oct. 30, 2024, 4:35 a.m. UTC
vcompress packs vl or less fields into vd, so the tail starts after the
last packed field. This could be more clearly expressed in the ISA,
but for now this thread helps to explain it:

https://github.com/riscv/riscv-v-spec/issues/796

Signed-off-by: Anton Blanchard <antonb@tenstorrent.com>
---
 target/riscv/vector_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 072bd444b1..ccb32e6122 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -5132,7 +5132,7 @@  void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2,               \
     }                                                                     \
     env->vstart = 0;                                                      \
     /* set tail elements to 1s */                                         \
-    vext_set_elems_1s(vd, vta, vl * esz, total_elems * esz);              \
+    vext_set_elems_1s(vd, vta, num * esz, total_elems * esz);             \
 }
 
 /* Compress into vd elements of vs2 where vs1 is enabled */