[PATCH] RISC-V: Recognized svadu and svade extension

This patch support svadu and svade extension.
To enable GCC to recognize and process svadu and svade extension correctly at compile time.

gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc (riscv_ext_version_table): New
	extension.
	(riscv_ext_flag_table) Ditto.
	* config/riscv/riscv.opt: New mask.

	* doc/invoke.texi (RISC-V Options): New extension

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/arch-45.c: New test.
	* gcc.target/riscv/arch-46.c: New test.

5 files changed, 29 insertions, 3 deletions

diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index 145a0f2..58c7d20 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -441,6 +441,8 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
   {"ssstateen", ISA_SPEC_CLASS_NONE, 1, 0},
   {"sstc",      ISA_SPEC_CLASS_NONE, 1, 0},
 
+  {"svade",   ISA_SPEC_CLASS_NONE, 1, 0},
+  {"svadu",   ISA_SPEC_CLASS_NONE, 1, 0},
   {"svinval", ISA_SPEC_CLASS_NONE, 1, 0},
   {"svnapot", ISA_SPEC_CLASS_NONE, 1, 0},
   {"svpbmt",  ISA_SPEC_CLASS_NONE, 1, 0},
@@ -1764,9 +1766,11 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] =
   RISCV_EXT_FLAG_ENTRY ("zcmp", x_riscv_zc_subext, MASK_ZCMP),
   RISCV_EXT_FLAG_ENTRY ("zcmt", x_riscv_zc_subext, MASK_ZCMT),
 
-  RISCV_EXT_FLAG_ENTRY ("svinval", x_riscv_sv_subext, MASK_SVINVAL),
-  RISCV_EXT_FLAG_ENTRY ("svnapot", x_riscv_sv_subext, MASK_SVNAPOT),
-  RISCV_EXT_FLAG_ENTRY ("svvptc", x_riscv_sv_subext, MASK_SVVPTC),
+  RISCV_EXT_FLAG_ENTRY ("svade",       x_riscv_sv_subext, MASK_SVADE),
+  RISCV_EXT_FLAG_ENTRY ("svadu",       x_riscv_sv_subext, MASK_SVADU),
+  RISCV_EXT_FLAG_ENTRY ("svinval",     x_riscv_sv_subext, MASK_SVINVAL),
+  RISCV_EXT_FLAG_ENTRY ("svnapot",     x_riscv_sv_subext, MASK_SVNAPOT),
+  RISCV_EXT_FLAG_ENTRY ("svvptc",      x_riscv_sv_subext, MASK_SVVPTC),
 
   RISCV_EXT_FLAG_ENTRY ("ztso", x_riscv_ztso_subext, MASK_ZTSO),
 
diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
index 7102480..9e471be 100644
--- a/gcc/config/riscv/riscv.opt
+++ b/gcc/config/riscv/riscv.opt
@@ -466,6 +466,10 @@ Mask(XCVBI) Var(riscv_xcv_subext)
 TargetVariable
 int riscv_sv_subext
 
+Mask(SVADE) Var(riscv_sv_subext)
+
+Mask(SVADU) Var(riscv_sv_subext)
+
 Mask(SVINVAL) Var(riscv_sv_subext)
 
 Mask(SVNAPOT) Var(riscv_sv_subext)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 90cbb51..b1964b3 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -31532,6 +31532,14 @@ to @samp{zvks} and @samp{zvkg}.
 @tab 1.0
 @tab Supervisor-mode timer interrupts extension.
 
+@item svade
+@tab 1.0
+@tab Cause exception when hardware updating of A/D bits is disabled
+
+@item svadu
+@tab 1.0
+@tab Hardware Updating of A/D Bits extension.
+
 @item svinval
 @tab 1.0
 @tab Fine-grained address-translation cache invalidation extension.
diff --git a/gcc/testsuite/gcc.target/riscv/arch-45.c b/gcc/testsuite/gcc.target/riscv/arch-45.c
new file mode 100644
index 0000000..afffb99
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/arch-45.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_svadu -mabi=lp64" } */
+int foo()
+{
+}
diff --git a/gcc/testsuite/gcc.target/riscv/arch-46.c b/gcc/testsuite/gcc.target/riscv/arch-46.c
new file mode 100644
index 0000000..2a06217
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/arch-46.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_svade -mabi=lp64" } */
+int foo()
+{
+}