Auto merge of #50188 - alexcrichton:feature-all-the-things, r=eddyb

Add `-C target-feature` to all functions

Previously the features specified to LLVM via `-C target-feature` were only
reflected in the `TargetMachine` but this change *also* reflects these and the
base features inside each function itself. This change matches clang and...

Closes rust-lang-nursery/stdsimd#427

1 files changed, 19 insertions, 0 deletions

diff --git a/src/test/codegen/target-feature-on-functions.rs b/src/test/codegen/target-feature-on-functions.rs
new file mode 100644
index 00000000000..e3cc2c753e5
--- /dev/null
+++ b/src/test/codegen/target-feature-on-functions.rs
@@ -0,0 +1,19 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// only-x86_64
+// compile-flags: -C target-feature=+avx
+
+#![crate_type = "lib"]
+
+#[no_mangle]
+pub fn foo() {
+    // CHECK: attributes #0 = { {{.*}}"target-features"="+avx"{{.*}} }
+}