autodiff: struct support in typetree

3 files changed, 35 insertions, 0 deletions

diff --git a/tests/run-make/autodiff/type-trees/struct-typetree/rmake.rs b/tests/run-make/autodiff/type-trees/struct-typetree/rmake.rs
new file mode 100644
index 00000000000..0af1b65ee18
--- /dev/null
+++ b/tests/run-make/autodiff/type-trees/struct-typetree/rmake.rs
@@ -0,0 +1,9 @@
+//@ needs-enzyme
+//@ ignore-cross-compile
+
+use run_make_support::{llvm_filecheck, rfs, rustc};
+
+fn main() {
+    rustc().input("test.rs").arg("-Zautodiff=Enable").emit("llvm-ir").run();
+    llvm_filecheck().patterns("struct.check").stdin_buf(rfs::read("test.ll")).run();
+}
diff --git a/tests/run-make/autodiff/type-trees/struct-typetree/struct.check b/tests/run-make/autodiff/type-trees/struct-typetree/struct.check
new file mode 100644
index 00000000000..2f763f18c1c
--- /dev/null
+++ b/tests/run-make/autodiff/type-trees/struct-typetree/struct.check
@@ -0,0 +1,4 @@
+; Check that struct TypeTree metadata is correctly generated
+; Should show Float@double at offsets 0, 8, 16 for Point struct fields
+
+CHECK: define{{.*}}"enzyme_type"="{[]:Float@double}"{{.*}}@test_struct{{.*}}"enzyme_type"="{[]:Pointer}"
\ No newline at end of file
diff --git a/tests/run-make/autodiff/type-trees/struct-typetree/test.rs b/tests/run-make/autodiff/type-trees/struct-typetree/test.rs
new file mode 100644
index 00000000000..cbe7b10e409
--- /dev/null
+++ b/tests/run-make/autodiff/type-trees/struct-typetree/test.rs
@@ -0,0 +1,22 @@
+#![feature(autodiff)]
+
+use std::autodiff::autodiff_reverse;
+
+#[repr(C)]
+struct Point {
+    x: f64,
+    y: f64,
+    z: f64,
+}
+
+#[autodiff_reverse(d_test, Duplicated, Active)]
+#[no_mangle]
+fn test_struct(point: &Point) -> f64 {
+    point.x + point.y * 2.0 + point.z * 3.0
+}
+
+fn main() {
+    let point = Point { x: 1.0, y: 2.0, z: 3.0 };
+    let mut d_point = Point { x: 0.0, y: 0.0, z: 0.0 };
+    let _result = d_test(&point, &mut d_point, 1.0);
+}