Add implied rules to enable the implied extensions of Zvfofp4min
extension recursively.

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/cpu.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 7823508615..87827441d3 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -2520,6 +2520,15 @@ static RISCVCPUImpliedExtsRule ZVFOFP8MIN_IMPLIED = {
     },
 };
 
+static RISCVCPUImpliedExtsRule ZVFOFP4MIN_IMPLIED = {
+    .ext = CPU_CFG_OFFSET(ext_zvfofp4min),
+    .implied_multi_exts = {
+        CPU_CFG_OFFSET(ext_zve32f),
+
+        RISCV_IMPLIED_EXTS_RULE_END
+    },
+};
+
 static RISCVCPUImpliedExtsRule ZVKN_IMPLIED = {
     .ext = CPU_CFG_OFFSET(ext_zvkn),
     .implied_multi_exts = {
@@ -2648,9 +2657,10 @@ RISCVCPUImpliedExtsRule *riscv_multi_ext_implied_rules[] = {
     &ZKS_IMPLIED, &ZVBB_IMPLIED, &ZVE32F_IMPLIED,
     &ZVE32X_IMPLIED, &ZVE64D_IMPLIED, &ZVE64F_IMPLIED,
     &ZVE64X_IMPLIED, &ZVFBFMIN_IMPLIED, &ZVFBFWMA_IMPLIED,
-    &ZVFH_IMPLIED, &ZVFHMIN_IMPLIED, &ZVFOFP8MIN_IMPLIED,
-    &ZVKN_IMPLIED, &ZVKNC_IMPLIED, &ZVKNG_IMPLIED, &ZVKNHB_IMPLIED,
-    &ZVKS_IMPLIED,  &ZVKSC_IMPLIED, &ZVKSG_IMPLIED, &SSCFG_IMPLIED,
+    &ZVFH_IMPLIED, &ZVFHMIN_IMPLIED, &ZVFOFP4MIN_IMPLIED,
+    &ZVFOFP8MIN_IMPLIED, &ZVKN_IMPLIED, &ZVKNC_IMPLIED,
+    &ZVKNG_IMPLIED, &ZVKNHB_IMPLIED, &ZVKS_IMPLIED,
+    &ZVKSC_IMPLIED, &ZVKSG_IMPLIED, &SSCFG_IMPLIED,
     &SUPM_IMPLIED, &SSPM_IMPLIED, &SMCTR_IMPLIED, &SSCTR_IMPLIED,
     NULL
 };
-- 
2.52.0