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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/run-make-fulldeps/volatile-intrinsics
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/run-make-fulldeps/volatile-intrinsics')
-rw-r--r--src/test/run-make-fulldeps/volatile-intrinsics/Makefile9
-rw-r--r--src/test/run-make-fulldeps/volatile-intrinsics/main.rs24
2 files changed, 33 insertions, 0 deletions
diff --git a/src/test/run-make-fulldeps/volatile-intrinsics/Makefile b/src/test/run-make-fulldeps/volatile-intrinsics/Makefile
new file mode 100644
index 000000000..acbadbef9
--- /dev/null
+++ b/src/test/run-make-fulldeps/volatile-intrinsics/Makefile
@@ -0,0 +1,9 @@
+-include ../tools.mk
+
+all:
+ # The tests must pass...
+ $(RUSTC) main.rs
+ $(call RUN,main)
+ # ... and the loads/stores must not be optimized out.
+ $(RUSTC) main.rs --emit=llvm-ir
+ $(CGREP) "load volatile" "store volatile" < $(TMPDIR)/main.ll
diff --git a/src/test/run-make-fulldeps/volatile-intrinsics/main.rs b/src/test/run-make-fulldeps/volatile-intrinsics/main.rs
new file mode 100644
index 000000000..4295d95f3
--- /dev/null
+++ b/src/test/run-make-fulldeps/volatile-intrinsics/main.rs
@@ -0,0 +1,24 @@
+#![feature(core_intrinsics, volatile)]
+
+use std::intrinsics::{
+ unaligned_volatile_load, unaligned_volatile_store, volatile_load, volatile_store,
+};
+use std::ptr::{read_volatile, write_volatile};
+
+pub fn main() {
+ unsafe {
+ let mut i: isize = 1;
+ volatile_store(&mut i, 2);
+ assert_eq!(volatile_load(&i), 2);
+ }
+ unsafe {
+ let mut i: isize = 1;
+ unaligned_volatile_store(&mut i, 2);
+ assert_eq!(unaligned_volatile_load(&i), 2);
+ }
+ unsafe {
+ let mut i: isize = 1;
+ write_volatile(&mut i, 2);
+ assert_eq!(read_volatile(&i), 2);
+ }
+}