From 820bba1c467aa5aa54d6db2869b15c643e5c350c Mon Sep 17 00:00:00 2001
From: Camelid <camelidcamel@gmail.com>
Date: Fri, 12 Jun 2020 12:12:36 -0700
Subject: [PATCH] Add codegen test for multiple `asm!` options

---
 src/test/codegen/asm-multiple-options.rs | 53 ++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 src/test/codegen/asm-multiple-options.rs

diff --git a/src/test/codegen/asm-multiple-options.rs b/src/test/codegen/asm-multiple-options.rs
new file mode 100644
index 00000000000..c702742bf1a
--- /dev/null
+++ b/src/test/codegen/asm-multiple-options.rs
@@ -0,0 +1,53 @@
+// compile-flags: -O
+// only-x86_64
+
+#![crate_type = "rlib"]
+#![feature(asm)]
+
+// CHECK-LABEL: @pure
+// CHECK-NOT: asm
+// CHECK: ret void
+#[no_mangle]
+pub unsafe fn pure(x: i32) {
+    let y: i32;
+    asm!("", out("ax") y, in("bx") x, options(pure), options(nomem));
+}
+
+pub static mut VAR: i32 = 0;
+pub static mut DUMMY_OUTPUT: i32 = 0;
+
+// CHECK-LABEL: @readonly
+// CHECK: call i32 asm
+// CHECK: ret i32 1
+#[no_mangle]
+pub unsafe fn readonly() -> i32 {
+    VAR = 1;
+    asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(readonly));
+    VAR
+}
+
+// CHECK-LABEL: @nomem
+// CHECK-NOT: store
+// CHECK: call i32 asm
+// CHECK: store
+// CHECK: ret i32 2
+#[no_mangle]
+pub unsafe fn nomem() -> i32 {
+    VAR = 1;
+    asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(nomem));
+    VAR = 2;
+    VAR
+}
+
+// CHECK-LABEL: @not_nomem
+// CHECK: store
+// CHECK: call i32 asm
+// CHECK: store
+// CHECK: ret i32 2
+#[no_mangle]
+pub unsafe fn not_nomem() -> i32 {
+    VAR = 1;
+    asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(readonly));
+    VAR = 2;
+    VAR
+}