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| author | eopXD <yueh.ting.chen@gmail.com> | 2022-06-06 06:16:51 +0000 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-06-10 09:31:42 +1000 |
| commit | 38581e5c9a99d2ff9244709cb3577b06a1310006 (patch) | |
| tree | 679cd206aefdc5c3638356c332c4a5d189940210 /target/riscv | |
| parent | 7b1bff41c1524e5dc1c2815f68b0454656539993 (diff) | |
| download | qemu-38581e5c9a99d2ff9244709cb3577b06a1310006.zip qemu-38581e5c9a99d2ff9244709cb3577b06a1310006.tar.gz qemu-38581e5c9a99d2ff9244709cb3577b06a1310006.tar.bz2 | |
target/riscv: rvv: Add tail agnostic for vector integer comparison instructions
Compares write mask registers, and so always operate under a tail-
agnostic policy.
Signed-off-by: eop Chen <eop.chen@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <165449614532.19704.7000832880482980398-9@git.sr.ht>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv')
| -rw-r--r-- | target/riscv/vector_helper.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 056c2a1..a64506b 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -1371,6 +1371,8 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \ { \ uint32_t vm = vext_vm(desc); \ uint32_t vl = env->vl; \ + uint32_t total_elems = env_archcpu(env)->cfg.vlen; \ + uint32_t vta_all_1s = vext_vta_all_1s(desc); \ uint32_t i; \ \ for (i = env->vstart; i < vl; i++) { \ @@ -1382,6 +1384,13 @@ void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \ vext_set_elem_mask(vd, i, DO_OP(s2, s1)); \ } \ env->vstart = 0; \ + /* mask destination register are always tail-agnostic */ \ + /* set tail elements to 1s */ \ + if (vta_all_1s) { \ + for (; i < total_elems; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ + } \ } GEN_VEXT_CMP_VV(vmseq_vv_b, uint8_t, H1, DO_MSEQ) @@ -1420,6 +1429,8 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1, void *vs2, \ { \ uint32_t vm = vext_vm(desc); \ uint32_t vl = env->vl; \ + uint32_t total_elems = env_archcpu(env)->cfg.vlen; \ + uint32_t vta_all_1s = vext_vta_all_1s(desc); \ uint32_t i; \ \ for (i = env->vstart; i < vl; i++) { \ @@ -1431,6 +1442,13 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1, void *vs2, \ DO_OP(s2, (ETYPE)(target_long)s1)); \ } \ env->vstart = 0; \ + /* mask destination register are always tail-agnostic */ \ + /* set tail elements to 1s */ \ + if (vta_all_1s) { \ + for (; i < total_elems; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ + } \ } GEN_VEXT_CMP_VX(vmseq_vx_b, uint8_t, H1, DO_MSEQ) |