[PATCH] minimal support for xtheadv

[chenyixuan@iscas.ac.cn]

From: XYenChi <oriachiuan@gmail.com>

This patch is for support xtheadv.

gcc/ChangeLog:

2023-11-08  Chen Yixuan  <chenyixuan@iscas.an.cn>

        * common/config/riscv/riscv-common.cc: Add xthead minimal support.

gcc/config/ChangeLog:

2023-11-08  Chen Yixuan  <chenyixuan@iscas.an.cn>

        * riscv/riscv.opt: Add xthead minimal support.
---
 gcc/common/config/riscv/riscv-common.cc | 2 ++
 gcc/config/riscv/riscv.opt              | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index 526dbb7603b..d5ea0ee9b70 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -325,6 +325,7 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
   {"xtheadmemidx", ISA_SPEC_CLASS_NONE, 1, 0},
   {"xtheadmempair", ISA_SPEC_CLASS_NONE, 1, 0},
   {"xtheadsync", ISA_SPEC_CLASS_NONE, 1, 0},
+  {"xtheadv",    ISA_SPEC_CLASS_NONE, 0, 7},
 
   {"xventanacondops", ISA_SPEC_CLASS_NONE, 1, 0},
 
@@ -1680,6 +1681,7 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] =
   {"xtheadmemidx",  &gcc_options::x_riscv_xthead_subext, MASK_XTHEADMEMIDX},
   {"xtheadmempair", &gcc_options::x_riscv_xthead_subext, MASK_XTHEADMEMPAIR},
   {"xtheadsync",    &gcc_options::x_riscv_xthead_subext, MASK_XTHEADSYNC},
+  {"xtheadv",       &gcc_options::x_riscv_xthead_subext, MASK_XTHEADV},
 
   {"xventanacondops", &gcc_options::x_riscv_xventana_subext, MASK_XVENTANACONDOPS},
 
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 70d78151cee..2bbdf680fa2 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -438,6 +438,8 @@ Mask(XTHEADMEMPAIR) Var(riscv_xthead_subext)
 
 Mask(XTHEADSYNC)    Var(riscv_xthead_subext)
 
+Mask(XTHEADV)       Var(riscv_xthead_subext)
+
 TargetVariable
 int riscv_xventana_subext
 
-- 
2.42.0