From: Xiao Zeng <zengxiao@eswincomputing.com>
Date: Fri, 27 Sep 2024 09:30:36 +0000 (+0800)
Subject: RISC-V: Add an implicit dependency for Zawrs
X-Git-Tag: basepoints/gcc-16~5424
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c01e3aaae79ecd439ad35063db3dee9775f3aefa;p=thirdparty%2Fgcc.git

RISC-V: Add an implicit dependency for Zawrs

There is a description in <https://github.com/riscv/riscv-isa-manual/blob/main/src/zawrs.adoc>:

"The instructions in the Zawrs extension are only useful in conjunction
with the LR instruction, which is provided by the Zalrsc component
of the A extension."

It can be concluded that: zawrs -> zalrsc.

gcc/ChangeLog:

	* common/config/riscv/riscv-common.cc: zawrs -> zalrsc.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/predef-38.c: New test.
	* gcc.target/riscv/predef-39.c: New test.

Signed-off-by: Xiao Zeng <zengxiao@eswincomputing.com>
---

diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
index bd42fd01532..a6abd903b98 100644
--- a/gcc/common/config/riscv/riscv-common.cc
+++ b/gcc/common/config/riscv/riscv-common.cc
@@ -96,6 +96,7 @@ static const riscv_implied_info_t riscv_implied_info[] =
 
   {"zabha", "zaamo"},
   {"zacas", "zaamo"},
+  {"zawrs", "zalrsc"},
 
   {"zcmop", "zca"},
 
diff --git a/gcc/testsuite/gcc.target/riscv/predef-38.c b/gcc/testsuite/gcc.target/riscv/predef-38.c
new file mode 100644
index 00000000000..986c02b451a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/predef-38.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv32i_zawrs -mabi=ilp32 -mcmodel=medlow -misa-spec=20191213" } */
+
+int main () {
+
+#ifndef __riscv_arch_test
+#error "__riscv_arch_test"
+#endif
+
+#if __riscv_xlen != 32
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_i)
+#error "__riscv_i"
+#endif
+
+#if !defined(__riscv_zawrs)
+#error "__riscv_zawrs"
+#endif
+
+#if !defined(__riscv_zalrsc)
+#error "__riscv_zalrsc"
+#endif
+
+#if defined(__riscv_a)
+#error "__riscv_a"
+#endif
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/predef-39.c b/gcc/testsuite/gcc.target/riscv/predef-39.c
new file mode 100644
index 00000000000..558164de8c4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/predef-39.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv64i_zawrs -mabi=lp64 -mcmodel=medlow -misa-spec=20191213" } */
+
+int main () {
+
+#ifndef __riscv_arch_test
+#error "__riscv_arch_test"
+#endif
+
+#if __riscv_xlen != 64
+#error "__riscv_xlen"
+#endif
+
+#if !defined(__riscv_i)
+#error "__riscv_i"
+#endif
+
+#if !defined(__riscv_zawrs)
+#error "__riscv_zawrs"
+#endif
+
+#if !defined(__riscv_zalrsc)
+#error "__riscv_zalrsc"
+#endif
+
+#if defined(__riscv_a)
+#error "__riscv_a"
+#endif
+
+  return 0;
+}