Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can

annotate global, local variables, struct fields, or arbitrary statements (using
the __builtin_annotation), rdar://8037476.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139423 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 52 insertions, 0 deletions

diff --git a/test/CodeGen/annotations-builtin.c b/test/CodeGen/annotations-builtin.c
new file mode 100644
index 0000000000..42421a0a52
--- /dev/null
+++ b/test/CodeGen/annotations-builtin.c
@@ -0,0 +1,52 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+// END.
+
+static long long llfoo;
+static int intfoo;
+static short shortfoo;
+static char charfoo;
+
+// CHECK: private unnamed_addr constant [13 x i8] {{.*}}annotation_a{{.*}} section "llvm.metadata"
+// CHECK-NOT: {{.*}}annotation_a{{.*}}
+
+static int foo(int a) {
+    return a + 1;
+}
+
+int main(int argc, char **argv) {
+    char barray[16];
+    char *b = (char *) __builtin_annotation((int)barray, "annotation_a");
+// CHECK: ptrtoint i8* {{.*}} to i32
+// CHECK-NEXT: call i32 @llvm.annotation.i32
+// CHECK: inttoptr {{.*}} to i8*
+
+    int call = __builtin_annotation(foo(argc), "annotation_a");
+// CHECK: call {{.*}} @foo
+// CHECK: call i32 @llvm.annotation.i32
+
+    long long lla = __builtin_annotation(llfoo, "annotation_a");
+// CHECK: trunc i64 {{.*}} to i32
+// CHECK-NEXT: call i32 @llvm.annotation.i32
+// CHECK-NEXT: zext i32 {{.*}} to i64
+
+    int inta = __builtin_annotation(intfoo, "annotation_a");
+// CHECK: load i32* @intfoo
+// CHECK-NEXT: call i32 @llvm.annotation.i32
+// CHECK-NEXT: store
+
+    short shorta =  __builtin_annotation(shortfoo, "annotation_a");
+// CHECK: sext i16 {{.*}} to i32
+// CHECK-NEXT: call i32 @llvm.annotation.i32
+// CHECK-NEXT: trunc i32 {{.*}} to i16
+
+    char chara = __builtin_annotation(charfoo, "annotation_a");
+// CHECK: sext i8 {{.*}} to i32
+// CHECK-NEXT: call i32 @llvm.annotation.i32
+// CHECK-NEXT: trunc i32 {{.*}} to i8
+//
+    char **arg = (char**) __builtin_annotation((int) argv, "annotation_a");
+// CHECK: ptrtoint i8** {{.*}} to
+// CHECK: call i32 @llvm.annotation.i32
+// CHECK: inttoptr {{.*}} to i8**
+    return 0;
+}