[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v2 09/12] target/riscv/cpu.h: use 'vlenb' in vext_get_vlmax()
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH v2 09/12] target/riscv/cpu.h: use 'vlenb' in vext_get_vlmax() |
Date: |
Mon, 15 Jan 2024 19:25:25 -0300 |
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
target/riscv/cpu.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 11df226a00..7304e478c2 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -692,7 +692,11 @@ static inline uint32_t vext_get_vlmax(RISCVCPU *cpu,
target_ulong vtype)
{
uint8_t sew = FIELD_EX64(vtype, VTYPE, VSEW);
int8_t lmul = sextract32(FIELD_EX64(vtype, VTYPE, VLMUL), 0, 3);
- return cpu->cfg.vlen >> (sew + 3 - lmul);
+ /*
+ * vlmax = vlen >> (sew + 3 - lmul). With vlenb,
+ * 3 less shifts: vlenb >> (sew + 3 - 3 - lmul)
+ */
+ return cpu->cfg.vlenb >> (sew - lmul);
}
void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc,
--
2.43.0
- Re: [PATCH v2 04/12] target/riscv/insn_trans/trans_rvbf16.c.inc: use cpu->cfg.vlenb, (continued)
- [PATCH v2 05/12] target/riscv/insn_trans/trans_rvv.c.inc: use 'vlenb', Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 06/12] target/riscv/insn_trans/trans_rvvk.c.inc: use 'vlenb', Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 07/12] target/riscv/vector_helper.c: use 'vlenb', Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 08/12] target/riscv/vector_helper.c: use vlenb in HELPER(vsetvl), Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 09/12] target/riscv/cpu.h: use 'vlenb' in vext_get_vlmax(),
Daniel Henrique Barboza <=
- [PATCH v2 10/12] target/riscv/insn_trans/trans_rvv.c.inc: use 'vlenb' in MAXSZ(), Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 11/12] trans_rvv.c.inc: use 'vlenb' to calc vlmax in trans_vrgather_v*(), Daniel Henrique Barboza, 2024/01/15
- [PATCH v2 12/12] target/riscv/cpu.c: remove cpu->cfg.vlen, Daniel Henrique Barboza, 2024/01/15