From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- .../run-make-fulldeps/volatile-intrinsics/Makefile | 9 ++++++++ .../run-make-fulldeps/volatile-intrinsics/main.rs | 24 ++++++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 tests/run-make-fulldeps/volatile-intrinsics/Makefile create mode 100644 tests/run-make-fulldeps/volatile-intrinsics/main.rs (limited to 'tests/run-make-fulldeps/volatile-intrinsics') diff --git a/tests/run-make-fulldeps/volatile-intrinsics/Makefile b/tests/run-make-fulldeps/volatile-intrinsics/Makefile new file mode 100644 index 000000000..2a78c7b9c --- /dev/null +++ b/tests/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/tests/run-make-fulldeps/volatile-intrinsics/main.rs b/tests/run-make-fulldeps/volatile-intrinsics/main.rs new file mode 100644 index 000000000..4295d95f3 --- /dev/null +++ b/tests/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); + } +} -- cgit v1.2.3