Add a couple of tests to ensure that BTF type/decl tags do not interfere
with generation of BPF CO-RE relocations.
gcc/testsuite/
* gcc.target/bpf/core-btf-tag-1.c: New test.
* gcc.target/bpf/core-btf-tag-2.c: New test.
---
gcc/testsuite/gcc.target/bpf/core-btf-tag-1.c | 23 +++++++++++++++++++
gcc/testsuite/gcc.target/bpf/core-btf-tag-2.c | 23 +++++++++++++++++++
2 files changed, 46 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/bpf/core-btf-tag-1.c
create mode 100644 gcc/testsuite/gcc.target/bpf/core-btf-tag-2.c
diff --git a/gcc/testsuite/gcc.target/bpf/core-btf-tag-1.c
b/gcc/testsuite/gcc.target/bpf/core-btf-tag-1.c
new file mode 100644
index 00000000000..bd0fb3e40be
--- /dev/null
+++ b/gcc/testsuite/gcc.target/bpf/core-btf-tag-1.c
@@ -0,0 +1,23 @@
+/* Test that BTF type tags do not interfere with CO-RE relocations. */
+
+/* { dg-do compile } */
+/* { dg-options "-gbtf -dA -mco-re" } */
+
+struct bpf_cpumask {
+ int i;
+ char c;
+} __attribute__((preserve_access_index));
+
+struct kptr_nested {
+ struct bpf_cpumask * __attribute__((btf_type_tag("kptr"))) mask;
+} __attribute__((preserve_access_index));
+
+void foo (struct kptr_nested *nested)
+{
+ if (nested && nested->mask)
+ nested->mask->i = 5;
+}
+
+/* { dg-final { scan-assembler-times "bpfcr_insn" 3 } } */
+/* { dg-final { scan-assembler-times "bpfcr_type \\(struct" 3 } } */
+/* { dg-final { scan-assembler-times "bpfcr_astr_off \\(\"0:0\"\\)" 3 } } */
diff --git a/gcc/testsuite/gcc.target/bpf/core-btf-tag-2.c
b/gcc/testsuite/gcc.target/bpf/core-btf-tag-2.c
new file mode 100644
index 00000000000..6654ffe3ae0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/bpf/core-btf-tag-2.c
@@ -0,0 +1,23 @@
+/* Test that BTF decl tags do not interfere with CO-RE relocations. */
+
+/* { dg-do compile } */
+/* { dg-options "-gbtf -dA -mco-re" } */
+
+struct bpf_cpumask {
+ int i;
+ char c;
+} __attribute__((preserve_access_index));
+
+struct kptr_nested {
+ struct bpf_cpumask * mask __attribute__((btf_decl_tag ("decltag")));
+} __attribute__((preserve_access_index));
+
+void foo (struct kptr_nested *nested __attribute__((btf_decl_tag ("foo"))))
+{
+ if (nested && nested->mask)
+ nested->mask->i = 5;
+}
+
+/* { dg-final { scan-assembler-times "bpfcr_insn" 3 } } */
+/* { dg-final { scan-assembler-times "bpfcr_type \\(struct" 3 } } */
+/* { dg-final { scan-assembler-times "bpfcr_astr_off \\(\"0:0\"\\)" 3 } } */
--
2.47.3
