Support predicate registers (clobber-only) in Hexagon inline assembly

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/codegen/asm/hexagon-clobbers.rs b/tests/codegen/asm/hexagon-clobbers.rs
new file mode 100644
index 00000000000..6bb662ead99
--- /dev/null
+++ b/tests/codegen/asm/hexagon-clobbers.rs
@@ -0,0 +1,37 @@
+//@ revisions: hexagon
+//@[hexagon] compile-flags: --target hexagon-unknown-linux-musl
+//@[hexagon] needs-llvm-components: hexagon
+//@ compile-flags: -Zmerge-functions=disabled
+
+#![crate_type = "rlib"]
+#![feature(no_core, rustc_attrs, lang_items, asm_experimental_arch)]
+#![no_core]
+
+#[lang = "sized"]
+trait Sized {}
+
+#[rustc_builtin_macro]
+macro_rules! asm {
+    () => {};
+}
+
+// CHECK-LABEL: @flags_clobber
+// CHECK: call void asm sideeffect "", ""()
+#[no_mangle]
+pub unsafe fn flags_clobber() {
+    asm!("", options(nostack, nomem));
+}
+
+// CHECK-LABEL: @no_clobber
+// CHECK: call void asm sideeffect "", ""()
+#[no_mangle]
+pub unsafe fn no_clobber() {
+    asm!("", options(nostack, nomem, preserves_flags));
+}
+
+// CHECK-LABEL: @p0_clobber
+// CHECK: call void asm sideeffect "", "~{p0}"()
+#[no_mangle]
+pub unsafe fn p0_clobber() {
+    asm!("", out("p0") _, options(nostack, nomem, preserves_flags));
+}