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[RFC v2 34/76] target/riscv: rvv-0.9: set-X-first mask bit instructions
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From: |
frank . chang |
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Subject: |
[RFC v2 34/76] target/riscv: rvv-0.9: set-X-first mask bit instructions |
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Date: |
Wed, 22 Jul 2020 17:15:57 +0800 |
From: Frank Chang <frank.chang@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
target/riscv/insn32.decode | 6 +++---
target/riscv/insn_trans/trans_rvv.inc.c | 5 ++++-
target/riscv/vector_helper.c | 4 ----
3 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index b5b59fe6dd..37b2582981 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -575,9 +575,9 @@ vmornot_mm 011100 - ..... ..... 010 ..... 1010111 @r
vmxnor_mm 011111 - ..... ..... 010 ..... 1010111 @r
vpopc_m 010000 . ..... 10000 010 ..... 1010111 @r2_vm
vfirst_m 010000 . ..... 10001 010 ..... 1010111 @r2_vm
-vmsbf_m 010110 . ..... 00001 010 ..... 1010111 @r2_vm
-vmsif_m 010110 . ..... 00011 010 ..... 1010111 @r2_vm
-vmsof_m 010110 . ..... 00010 010 ..... 1010111 @r2_vm
+vmsbf_m 010100 . ..... 00001 010 ..... 1010111 @r2_vm
+vmsif_m 010100 . ..... 00011 010 ..... 1010111 @r2_vm
+vmsof_m 010100 . ..... 00010 010 ..... 1010111 @r2_vm
viota_m 010110 . ..... 10000 010 ..... 1010111 @r2_vm
vid_v 010110 . 00000 10001 010 ..... 1010111 @r1_vm
vext_x_v 001100 1 ..... ..... 010 ..... 1010111 @r
diff --git a/target/riscv/insn_trans/trans_rvv.inc.c
b/target/riscv/insn_trans/trans_rvv.inc.c
index 3ef106ddeb..3834aca9ab 100644
--- a/target/riscv/insn_trans/trans_rvv.inc.c
+++ b/target/riscv/insn_trans/trans_rvv.inc.c
@@ -3006,7 +3006,10 @@ static bool trans_vfirst_m(DisasContext *s, arg_rmr *a)
#define GEN_M_TRANS(NAME) \
static bool trans_##NAME(DisasContext *s, arg_rmr *a) \
{ \
- if (vext_check_isa_ill(s)) { \
+ if (require_rvv(s) && \
+ vext_check_isa_ill(s) && \
+ require_vm(a->vm, a->rd) && \
+ (a->rd != a->rs2)) { \
uint32_t data = 0; \
gen_helper_gvec_3_ptr *fn = gen_helper_##NAME; \
TCGLabel *over = gen_new_label(); \
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 5bda274e70..aeaf3d1cfa 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4701,7 +4701,6 @@ enum set_mask_type {
static void vmsetm(void *vd, void *v0, void *vs2, CPURISCVState *env,
uint32_t desc, enum set_mask_type type)
{
- uint32_t vlmax = env_archcpu(env)->cfg.vlen;
uint32_t vm = vext_vm(desc);
uint32_t vl = env->vl;
int i;
@@ -4731,9 +4730,6 @@ static void vmsetm(void *vd, void *v0, void *vs2,
CPURISCVState *env,
}
}
}
- for (; i < vlmax; i++) {
- vext_set_elem_mask(vd, i, 0);
- }
}
void HELPER(vmsbf_m)(void *vd, void *v0, void *vs2, CPURISCVState *env,
--
2.17.1
- [RFC v2 29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation, (continued)
- [RFC v2 29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation, frank . chang, 2020/07/22
- [RFC v2 30/76] target/riscv: rvv-0.9: floating-point square-root instruction, frank . chang, 2020/07/22
- [RFC v2 31/76] target/riscv: rvv-0.9: floating-point classify instructions, frank . chang, 2020/07/22
- [RFC v2 32/76] target/riscv: rvv-0.9: mask population count instruction, frank . chang, 2020/07/22
- [RFC v2 33/76] target/riscv: rvv-0.9: find-first-set mask bit instruction, frank . chang, 2020/07/22
- [RFC v2 34/76] target/riscv: rvv-0.9: set-X-first mask bit instructions,
frank . chang <=
- [RFC v2 35/76] target/riscv: rvv-0.9: iota instruction, frank . chang, 2020/07/22
- [RFC v2 36/76] target/riscv: rvv-0.9: element index instruction, frank . chang, 2020/07/22
- [RFC v2 37/76] target/riscv: rvv-0.9: allow load element with sign-extended, frank . chang, 2020/07/22
- [RFC v2 38/76] target/riscv: rvv-0.9: register gather instructions, frank . chang, 2020/07/22
- [RFC v2 39/76] target/riscv: rvv-0.9: integer scalar move instructions, frank . chang, 2020/07/22