1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/ipa/pr70646.c b/gcc/testsuite/gcc.dg/ipa/pr70646.c
new file mode 100644
index 00000000000..f85816e7303
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/ipa/pr70646.c
@@ -0,0 +1,40 @@
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+#pragma GCC optimize("no-unit-at-a-time")
+
+typedef unsigned char u8;
+typedef unsigned long long u64;
+
+static inline __attribute__((always_inline)) u64 __swab64p(const u64 *p)
+{
+ return (__builtin_constant_p((u64)(*p)) ? ((u64)( (((u64)(*p) & (u64)0x00000000000000ffULL) << 56) | (((u64)(*p) & (u64)0x000000000000ff00ULL) << 40) | (((u64)(*p) & (u64)0x0000000000ff0000ULL) << 24) | (((u64)(*p) & (u64)0x00000000ff000000ULL) << 8) | (((u64)(*p) & (u64)0x000000ff00000000ULL) >> 8) | (((u64)(*p) & (u64)0x0000ff0000000000ULL) >> 24) | (((u64)(*p) & (u64)0x00ff000000000000ULL) >> 40) | (((u64)(*p) & (u64)0xff00000000000000ULL) >> 56))) : __builtin_bswap64(*p));
+}
+
+static inline u64 wwn_to_u64(void *wwn)
+{
+ return __swab64p(wwn);
+}
+
+void __attribute__((noinline,noclone)) broken(u64* shost)
+{
+ u8 node_name[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+ *shost = wwn_to_u64(node_name);
+}
+
+void __attribute__((noinline,noclone)) dummy(void)
+{
+ __builtin_abort();
+}
+
+int main(int argc, char* argv[])
+{
+ u64 v;
+
+ broken(&v);
+
+ if(v != (u64)-1)
+  __builtin_abort();
+
+ return 0;
+}