[gcc(refs/vendors/riscv/heads/gcc-15-with-riscv-opts)] [PATCH] RISC-V: Minimal support for sdtrig and ssstrict extensions.

[Jeff Law]

https://gcc.gnu.org/g:42b7dadd72fa4c11b4c274c3f4334ec623ce9c70

commit 42b7dadd72fa4c11b4c274c3f4334ec623ce9c70
Author: Dongyan Chen <chendongyan@isrc.iscas.ac.cn>
Date:   Tue May 6 17:09:54 2025 -0600

    [PATCH] RISC-V: Minimal support for sdtrig and ssstrict extensions.
    
    This patch support sdtrig and ssstrict extensions[1].
    To enable GCC to recognize and process sdtrig and ssstrict extensions correctly
    at compile time.
    
    [1] https://github.com/riscv/riscv-profiles/blob/main/src/rva23-profile.adoc
    
    gcc/ChangeLog:
    
            * common/config/riscv/riscv-common.cc: New extension.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/arch-47.c: New test.
    
    (cherry picked from commit 82126b26d17ed2c5ee48ca51e3fed69e898c9a20)

Diff:
---
 gcc/common/config/riscv/riscv-common.cc  | 3 +++
 gcc/testsuite/gcc.target/riscv/arch-47.c | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index 58c7d205b336..0233e1a108be 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -432,6 +432,8 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
   {"zcmp", ISA_SPEC_CLASS_NONE, 1, 0},
   {"zcmt", ISA_SPEC_CLASS_NONE, 1, 0},
 
+  {"sdtrig",  ISA_SPEC_CLASS_NONE, 1, 0},
+
   {"smaia",     ISA_SPEC_CLASS_NONE, 1, 0},
   {"smepmp",    ISA_SPEC_CLASS_NONE, 1, 0},
   {"smstateen", ISA_SPEC_CLASS_NONE, 1, 0},
@@ -440,6 +442,7 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
   {"sscofpmf",  ISA_SPEC_CLASS_NONE, 1, 0},
   {"ssstateen", ISA_SPEC_CLASS_NONE, 1, 0},
   {"sstc",      ISA_SPEC_CLASS_NONE, 1, 0},
+  {"ssstrict",  ISA_SPEC_CLASS_NONE, 1, 0},
 
   {"svade",   ISA_SPEC_CLASS_NONE, 1, 0},
   {"svadu",   ISA_SPEC_CLASS_NONE, 1, 0},
diff --git a/gcc/testsuite/gcc.target/riscv/arch-47.c b/gcc/testsuite/gcc.target/riscv/arch-47.c
new file mode 100644
index 000000000000..06bc80fe7800
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/arch-47.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_sdtrig_ssstrict -mabi=lp64" } */
+int foo()
+{
+}