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, 43 insertions, 0 deletions

diff --git a/test/CodeGen/annotations-var.c b/test/CodeGen/annotations-var.c
new file mode 100644
index 0000000000..97a10ac315
--- /dev/null
+++ b/test/CodeGen/annotations-var.c
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -emit-llvm -o %t1 %s
+// RUN: FileCheck --check-prefix=LOCAL %s < %t1
+// RUN: FileCheck --check-prefix=UNDEF %s < %t1
+// RUN: FileCheck --check-prefix=PARAM %s < %t1
+// END.
+
+// LOCAL: private unnamed_addr constant [15 x i8] c"localvar_ann_{{.}}\00", section "llvm.metadata"
+// LOCAL: private unnamed_addr constant [15 x i8] c"localvar_ann_{{.}}\00", section "llvm.metadata"
+
+// UNDEF: private unnamed_addr constant [15 x i8] c"undefvar_ann_0\00", section "llvm.metadata"
+
+// PARAM: private unnamed_addr constant [12 x i8] c"param_ann_{{.}}\00", section "llvm.metadata"
+// PARAM: private unnamed_addr constant [12 x i8] c"param_ann_{{.}}\00", section "llvm.metadata"
+// PARAM: private unnamed_addr constant [12 x i8] c"param_ann_{{.}}\00", section "llvm.metadata"
+// PARAM: private unnamed_addr constant [12 x i8] c"param_ann_{{.}}\00", section "llvm.metadata"
+
+int foo(int v __attribute__((annotate("param_ann_2"))) __attribute__((annotate("param_ann_3"))));
+int foo(int v __attribute__((annotate("param_ann_0"))) __attribute__((annotate("param_ann_1")))) {
+    return v + 1;
+// PARAM: define {{.*}}@foo
+// PARAM:  bitcast i32* %v.addr to i8*
+// PARAM-NEXT: call void @llvm.var.annotation(
+// PARAM-NEXT: bitcast i32* %v.addr to i8*
+// PARAM-NEXT: call void @llvm.var.annotation(
+// PARAM-NEXT: bitcast i32* %v.addr to i8*
+// PARAM-NEXT: call void @llvm.var.annotation(
+// PARAM-NEXT: bitcast i32* %v.addr to i8*
+// PARAM-NEXT: call void @llvm.var.annotation(
+}
+
+int main(int argc, char **argv) {
+    int localvar __attribute__((annotate("localvar_ann_0"))) __attribute__((annotate("localvar_ann_1"))) = 3;
+// LOCAL: %localvar1 = bitcast i32* %localvar to i8*
+// LOCAL-NEXT: call void @llvm.var.annotation(i8* %localvar1, i8* getelementptr inbounds ([15 x i8]* @{{.*}}), i8* getelementptr inbounds ({{.*}}), i32 32)
+// LOCAL-NEXT: %localvar2 = bitcast i32* %localvar to i8*
+// LOCAL-NEXT: call void @llvm.var.annotation(i8* %localvar2, i8* getelementptr inbounds ([15 x i8]* @{{.*}}), i8* getelementptr inbounds ({{.*}}), i32 32)
+    int undefvar __attribute__((annotate("undefvar_ann_0")));
+// UNDEF: %undefvar3 = bitcast i32* %undefvar to i8*
+// UNDEF-NEXT: call void @llvm.var.annotation(i8* %undefvar3, i8* getelementptr inbounds ([15 x i8]* @{{.*}}), i8* getelementptr inbounds ({{.*}}), i32 37)
+    localvar += argc;
+    undefvar = localvar;
+    return undefvar + localvar;
+}