[PATCH 1/3] RISC-V: Add mininal support for Zicbo[mzp]

[yulong]

From: yulong-plct <yul...@nj.iscas.ac.cn>

This commit adds minimal support for 'Zicbom','Zicboz' and 'Zicbop' extensions.

gcc/ChangeLog:

        * common/config/riscv/riscv-common.cc: Add zicbom, zicboz, zicbop 
extensions.
        * config/riscv/riscv-opts.h (MASK_ZICBOZ): New.
        (MASK_ZICBOM): New.
        (MASK_ZICBOP): New.
        (TARGET_ZICBOZ): New.
        (TARGET_ZICBOM): New.
        (TARGET_ZICBOP): New.
        * config/riscv/riscv.opt: New.

---
 gcc/common/config/riscv/riscv-common.cc | 6 ++++++
 gcc/config/riscv/riscv-opts.h           | 9 +++++++++
 gcc/config/riscv/riscv.opt              | 3 +++
 3 files changed, 18 insertions(+)

diff --git a/gcc/common/config/riscv/riscv-common.cc 
b/gcc/common/config/riscv/riscv-common.cc
index 1501242e296..52c6ac3b1c8 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -164,6 +164,9 @@ static const struct riscv_ext_version 
riscv_ext_version_table[] =
   {"zksed", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zksh",  ISA_SPEC_CLASS_NONE, 1, 0},
   {"zkt",   ISA_SPEC_CLASS_NONE, 1, 0},
+  {"zicboz",ISA_SPEC_CLASS_NONE, 1, 0},
+  {"zicbom",ISA_SPEC_CLASS_NONE, 1, 0},
+  {"zicbop",ISA_SPEC_CLASS_NONE, 1, 0},
 
   {"zk",    ISA_SPEC_CLASS_NONE, 1, 0},
   {"zkn",   ISA_SPEC_CLASS_NONE, 1, 0},
@@ -1109,6 +1112,9 @@ static const riscv_ext_flag_table_t 
riscv_ext_flag_table[] =
   {"zksed",  &gcc_options::x_riscv_zk_subext, MASK_ZKSED},
   {"zksh",   &gcc_options::x_riscv_zk_subext, MASK_ZKSH},
   {"zkt",    &gcc_options::x_riscv_zk_subext, MASK_ZKT},
+  {"zicboz", &gcc_options::x_riscv_zicmo_subext, MASK_ZICBOZ},
+  {"zicbom", &gcc_options::x_riscv_zicmo_subext, MASK_ZICBOM},
+  {"zicbop", &gcc_options::x_riscv_zicmo_subext, MASK_ZICBOP},
 
   {"zve32x",   &gcc_options::x_target_flags, MASK_VECTOR},
   {"zve32f",   &gcc_options::x_target_flags, MASK_VECTOR},
diff --git a/gcc/config/riscv/riscv-opts.h b/gcc/config/riscv/riscv-opts.h
index 15bb5e76854..42a7ff698e7 100644
--- a/gcc/config/riscv/riscv-opts.h
+++ b/gcc/config/riscv/riscv-opts.h
@@ -83,6 +83,15 @@ enum stack_protector_guard {
 #define TARGET_ZBC    ((riscv_zb_subext & MASK_ZBC) != 0)
 #define TARGET_ZBS    ((riscv_zb_subext & MASK_ZBS) != 0)
 
+#define MASK_ZICBOZ   (1 << 0)
+#define MASK_ZICBOM   (1 << 1)
+#define MASK_ZICBOP   (1 << 2)
+
+
+#define TARGET_ZICBOZ ((riscv_zicmo_subext & MASK_ZICBOZ) != 0)
+#define TARGET_ZICBOM ((riscv_zicmo_subext & MASK_ZICBOM) != 0)
+#define TARGET_ZICBOP ((riscv_zicmo_subext & MASK_ZICBOP) != 0)
+
 #define MASK_ZBKB     (1 << 0)
 #define MASK_ZBKC     (1 << 1)
 #define MASK_ZBKX     (1 << 2)
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 492aad12324..a0722613fcc 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -200,6 +200,9 @@ int riscv_zi_subext
 TargetVariable
 int riscv_zb_subext
 
+TargetVariable
+int riscv_zicmo_subext
+
 TargetVariable
 int riscv_zk_subext
 
-- 
2.17.1