Rename `tests/assembly` into `tests/assembly-llvm`

1 files changed, 40 insertions, 0 deletions

diff --git a/tests/assembly-llvm/target-feature-multiple.rs b/tests/assembly-llvm/target-feature-multiple.rs
new file mode 100644
index 00000000000..bc432d21931
--- /dev/null
+++ b/tests/assembly-llvm/target-feature-multiple.rs
@@ -0,0 +1,40 @@
+//@ add-core-stubs
+//@ assembly-output: emit-asm
+//@ needs-llvm-components: x86
+//@ revisions: TWOFLAGS SINGLEFLAG
+//@ compile-flags: --target=x86_64-unknown-linux-gnu
+//@ [TWOFLAGS] compile-flags: -C target-feature=+rdrnd -C target-feature=+rdseed
+//@ [SINGLEFLAG] compile-flags: -C target-feature=+rdrnd,+rdseed
+
+// Target features set via flags aren't necessarily reflected in the IR, so the only way to test
+// them is to build code that requires the features to be enabled to work.
+//
+// In this particular test if `rdrnd,rdseed` somehow didn't make it to LLVM, the instruction
+// selection should crash.
+//
+// > LLVM ERROR: Cannot select: 0x7f00f400c010: i32,i32,ch = X86ISD::RDSEED 0x7f00f400bfa8:2
+// > In function: foo
+//
+// See also tests/codegen/target-feature-overrides.rs
+#![feature(no_core, lang_items, link_llvm_intrinsics, abi_unadjusted)]
+#![crate_type = "lib"]
+#![no_core]
+
+extern crate minicore;
+use minicore::*;
+
+// Use of these requires target features to be enabled
+extern "unadjusted" {
+    #[link_name = "llvm.x86.rdrand.32"]
+    fn x86_rdrand32_step() -> (u32, i32);
+    #[link_name = "llvm.x86.rdseed.32"]
+    fn x86_rdseed32_step() -> (u32, i32);
+}
+
+#[no_mangle]
+pub unsafe fn foo() -> (u32, u32) {
+    // CHECK-LABEL: foo:
+    // CHECK: rdrand
+    // CHECK: rdseed
+    (x86_rdrand32_step().0, x86_rdseed32_step().0)
+}