On Thu, 17 Nov 2022 18:12:23 PST (-0800), christoph.muell...@vrull.eu wrote:
From: Christoph Müllner <christoph.muell...@vrull.eu>
This patch adds support for the two AIA ISA extensions Ssaia and Smaia.
They are not relelvant for the compiler, but the assembler might want
to validate the CSRs. Therefore, all this patch does is recognize the
extension name, emit a feature macro (incl. a test).
This is pretty far in the weeds, but the AIA PDF says
extension Smaia encompasses all added CSRs and all modifications to
interrupt response behavior that the AIA specifies for a hart, over
all privilege levels
but only a subset of AIA has been frozen. I think that's fine, assuming
we're decoupling ourselves from the ISA strings (and thus extension
names). We just need to document it somewhere -- presumably invoke, but
that doesn't document anything else yet so we don't really have a
pattern to match.
Signed-off-by: Christoph Müllner <christoph.muell...@vrull.eu>
---
gcc/common/config/riscv/riscv-common.cc | 2 ++
gcc/testsuite/gcc.target/riscv/smaia.c | 13 +++++++++++++
gcc/testsuite/gcc.target/riscv/ssaia.c | 13 +++++++++++++
3 files changed, 28 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/riscv/smaia.c
create mode 100644 gcc/testsuite/gcc.target/riscv/ssaia.c
diff --git a/gcc/common/config/riscv/riscv-common.cc
b/gcc/common/config/riscv/riscv-common.cc
index 4b7f777c103..674eded07b7 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -219,6 +219,8 @@ static const struct riscv_ext_version
riscv_ext_version_table[] =
{"zmmul", ISA_SPEC_CLASS_NONE, 1, 0},
+ {"smaia", ISA_SPEC_CLASS_NONE, 1, 0},
+ {"ssaia", ISA_SPEC_CLASS_NONE, 1, 0},
{"svinval", ISA_SPEC_CLASS_NONE, 1, 0},
{"svnapot", ISA_SPEC_CLASS_NONE, 1, 0},
diff --git a/gcc/testsuite/gcc.target/riscv/smaia.c
b/gcc/testsuite/gcc.target/riscv/smaia.c
new file mode 100644
index 00000000000..9ca80236245
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/smaia.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_smaia" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_smaia" { target { rv32 } } } */
+
+#ifndef __riscv_smaia
+#error Feature macro not defined
+#endif
+
+int
+foo (int a)
+{
+ return a;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/ssaia.c
b/gcc/testsuite/gcc.target/riscv/ssaia.c
new file mode 100644
index 00000000000..b20e0eb10f5
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/ssaia.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_ssaia" { target { rv64 } } } */
+/* { dg-options "-march=rv32gc_ssaia" { target { rv32 } } } */
+
+#ifndef __riscv_ssaia
+#error Feature macro not defined
+#endif
+
+int
+foo (int a)
+{
+ return a;
+}
