Add missing tests.

From-SVN: r216785

7 files changed, 120 insertions, 0 deletions

diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-10.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-10.c
new file mode 100644
index 0000000..24dfcfe
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-10.c
@@ -0,0 +1,18 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
+
+extern __UINT32_TYPE__ a;
+
+void
+foo ()
+{
+  /* Instrument a with access size 3.  */
+  int d = __builtin_memcmp (&a, "123", 3);
+  /* This should  generate a __builtin___asan_report_store4, because
+     the reference to a has been instrumented above with access size 3.  */
+  a = 1;
+}
+
+/* { dg-final { scan-tree-dump-times "__builtin___asan_report_store4" 1 "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-11.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-11.c
new file mode 100644
index 0000000..4082f32
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-11.c
@@ -0,0 +1,20 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
+
+extern __UINT32_TYPE__ a;
+
+void
+foo ()
+{
+  /* Instrument a with access size 5.  */
+  int d = __builtin_memcmp (&a, "12345", 4);
+  /* This should not generate a __builtin___asan_report_store4 because
+     the reference to a has been already instrumented above with access
+     size 5.  */
+  a = 1;
+}
+
+/* { dg-final { scan-tree-dump-not "& 7" "sanopt" } } */
+/* { dg-final { scan-tree-dump-not "__builtin___asan_report_store" "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-12.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-12.c
new file mode 100644
index 0000000..65e1d96
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-12.c
@@ -0,0 +1,16 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
+
+void
+foo (char *p)
+{
+  volatile int zero = 0;
+  __builtin_memcpy (p, "abc", zero);
+  /* This generates a __builtin___asan_report_store1 because we pass volatile
+     zero length into memcpy.  */
+  p[0] = 'd';
+}
+
+/* { dg-final { scan-tree-dump-times "__builtin___asan_report_store1" 1 "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-13.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-13.c
new file mode 100644
index 0000000..c04be06
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-13.c
@@ -0,0 +1,15 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
+
+void
+foo (char *p)
+{
+  __builtin_memcpy (p, "abc", 0);
+  /* This generates a __builtin___asan_report_store1 because we didn't access
+     any byte in previous memcpy because of zero length parameter.  */
+  p[0] = 'd';
+}
+
+/* { dg-final { scan-tree-dump-times "__builtin___asan_report_store1" 1 "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-14.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-14.c
new file mode 100644
index 0000000..fadce90
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-14.c
@@ -0,0 +1,15 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
+
+void
+foo (char *p)
+{
+  __builtin_memcpy (p, "abc", 2);
+  /* This doesn't generate a __builtin___asan_report_store1 because we
+     verified p[0] through p[2] is writable in previous memcpy call.  */
+  p[0] = 'd';
+}
+
+/* { dg-final { scan-tree-dump-not "__builtin___asan_report_store1" "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-15.c b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-15.c
new file mode 100644
index 0000000..00676da
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-15.c
@@ -0,0 +1,16 @@
+/* { dg-options "-fdump-tree-sanopt" } */
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
+
+void
+foo (char *p)
+{
+  volatile int two = 2;
+  __builtin_memcpy (p, "abc", two);
+  /* This generates a __builtin___asan_report_store1 because we don't
+     optimize previous memcpy call.  */
+  p[0] = 'd';
+}
+
+/* { dg-final { scan-tree-dump-times "__builtin___asan_report_store1" 1 "sanopt" } } */
+/* { dg-final { cleanup-tree-dump "sanopt" } } */
diff --git a/gcc/testsuite/c-c++-common/asan/pr63638.c b/gcc/testsuite/c-c++-common/asan/pr63638.c
new file mode 100644
index 0000000..a8bafc5
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/asan/pr63638.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+
+extern
+#ifdef __cplusplus
+"C"
+#endif
+void *memcpy (void *, const void *, __SIZE_TYPE__);
+
+struct S{
+  long d0, d1, d2, d3, d4, d5, d6;
+};
+
+struct S s[6];
+
+int f(struct S *p)
+{
+  memcpy(p, &s[2], sizeof(*p));
+  memcpy(p, &s[1], sizeof(*p));
+}
+