Test for armv7 get_unchecked(...) inlining

tests/codegen-llvm/inlining-target-feature-differences.rs

@@ -0,0 +1,19 @@
+//@ only-arm
+//@ ignore-backends: gcc
+
+#![feature(arm_target_feature)]
+#![crate_type = "lib"]
+#![no_std]
+
+#[inline]
+fn callee_neon(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[no_mangle]
+#[target_feature(enable = "neon")]
+pub fn caller_neon(x: i32, y: i32) -> i32 {
+    // CHECK-LABEL: define noundef i32 @caller_neon(
+    // CHECK: [[R:%[0-9A-Za-z_.]+]] = add
+    callee_neon(x, y)
+}