about summary refs log tree commit diff
path: root/tests/codegen/asm/options.rs
diff options
context:
space:
mode:
authorTaiki Endo <te316e89@gmail.com>2024-11-01 22:12:55 +0900
committerTaiki Endo <te316e89@gmail.com>2024-11-01 22:12:55 +0900
commit96e7eaf478f53cdf417ad681d2afa07b00abbdfd (patch)
treeac8bbc17410f3a71f96f8325955b59ae5730c20c /tests/codegen/asm/options.rs
parenta8e1186e3c14a54f7a38cc1183117dc7e77f4f82 (diff)
downloadrust-96e7eaf478f53cdf417ad681d2afa07b00abbdfd.tar.gz
rust-96e7eaf478f53cdf417ad681d2afa07b00abbdfd.zip
Move remaining inline assembly test files into asm directory
Diffstat (limited to 'tests/codegen/asm/options.rs')
-rw-r--r--tests/codegen/asm/options.rs104
1 files changed, 104 insertions, 0 deletions
diff --git a/tests/codegen/asm/options.rs b/tests/codegen/asm/options.rs
new file mode 100644
index 00000000000..96a72c2f5ae
--- /dev/null
+++ b/tests/codegen/asm/options.rs
@@ -0,0 +1,104 @@
+//@ compile-flags: -O
+//@ only-x86_64
+
+#![crate_type = "rlib"]
+
+use std::arch::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("cx") x, options(pure, nomem));
+}
+
+// CHECK-LABEL: @noreturn
+// CHECK: call void asm
+// CHECK-NEXT: unreachable
+#[no_mangle]
+pub unsafe fn noreturn() {
+    asm!("", options(noreturn));
+}
+
+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, readonly));
+    VAR
+}
+
+// CHECK-LABEL: @not_readonly
+// CHECK: call i32 asm
+// CHECK: ret i32 %
+#[no_mangle]
+pub unsafe fn not_readonly() -> i32 {
+    VAR = 1;
+    asm!("", out("ax") DUMMY_OUTPUT, options());
+    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, nomem));
+    VAR = 2;
+    VAR
+}
+
+// CHECK-LABEL: @nomem_nopure
+// CHECK-NOT: store
+// CHECK: call i32 asm
+// CHECK: store
+// CHECK: ret i32 2
+#[no_mangle]
+pub unsafe fn nomem_nopure() -> i32 {
+    VAR = 1;
+    asm!("", out("ax") DUMMY_OUTPUT, 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, readonly));
+    VAR = 2;
+    VAR
+}
+
+// CHECK-LABEL: @dont_remove_nonpure
+// CHECK: call void asm
+// CHECK: call void asm
+// CHECK: call void asm
+// CHECK: ret void
+#[no_mangle]
+pub unsafe fn dont_remove_nonpure() {
+    asm!("", options());
+    asm!("", options(nomem));
+    asm!("", options(readonly));
+}
+
+// CHECK-LABEL: @raw
+// CHECK: call void asm sideeffect inteldialect "{} {}", ""()
+#[no_mangle]
+pub unsafe fn raw() {
+    asm!("{} {}", options(nostack, nomem, preserves_flags, raw));
+}