Fix rotate_left and rotate_right with 128bit shift amount

[rust.git] / example / mini_core_hello_world.rs

diff --git a/example/mini_core_hello_world.rs b/example/mini_core_hello_world.rs
index 82014f594d23bb043504b751aae4da759f88c548..47abe2d1de80057ab3dc3c0d9d38e8e162957985 100644 (file)
--- a/example/mini_core_hello_world.rs
+++ b/example/mini_core_hello_world.rs
@@ -1,9 +1,4 @@
-// Adapted from https://github.com/sunfishcode/mir2cranelift/blob/master/rust-examples/nocore-hello-world.rs
-
-#![feature(
-    no_core, unboxed_closures, start, lang_items, box_syntax, never_type, linkage,
-    extern_types, thread_local
-)]
+#![feature(no_core, lang_items, box_syntax, never_type, linkage, extern_types, thread_local)]
 #![no_core]
 #![allow(dead_code, non_camel_case_types)]
 
@@ -12,7 +7,7 @@
 use mini_core::*;
 use mini_core::libc::*;
 
-unsafe extern "C" fn my_puts(s: *const u8) {
+unsafe extern "C" fn my_puts(s: *const i8) {
     puts(s);
 }
 
@@ -37,7 +32,7 @@ trait SomeTrait {
 impl SomeTrait for &'static str {
     fn object_safe(&self) {
         unsafe {
-            puts(*self as *const str as *const u8);
+            puts(*self as *const str as *const i8);
         }
     }
 }
@@ -52,7 +47,7 @@ struct NoisyDrop {
 impl Drop for NoisyDrop {
     fn drop(&mut self) {
         unsafe {
-            puts(self.text as *const str as *const u8);
+            puts(self.text as *const str as *const i8);
         }
     }
 }
@@ -60,7 +55,7 @@ fn drop(&mut self) {
 impl Drop for NoisyDropInner {
     fn drop(&mut self) {
         unsafe {
-            puts("Inner got dropped!\0" as *const str as *const u8);
+            puts("Inner got dropped!\0" as *const str as *const i8);
         }
     }
 }
@@ -82,9 +77,9 @@ fn start<T: Termination + 'static>(
     argv: *const *const u8,
 ) -> isize {
     if argc == 3 {
-        unsafe { puts(*argv); }
-        unsafe { puts(*((argv as usize + intrinsics::size_of::<*const u8>()) as *const *const u8)); }
-        unsafe { puts(*((argv as usize + 2 * intrinsics::size_of::<*const u8>()) as *const *const u8)); }
+        unsafe { puts(*argv as *const i8); }
+        unsafe { puts(*((argv as usize + intrinsics::size_of::<*const u8>()) as *const *const i8)); }
+        unsafe { puts(*((argv as usize + 2 * intrinsics::size_of::<*const u8>()) as *const *const i8)); }
     }
 
     main().report();
@@ -154,11 +149,11 @@ fn main() {
         printf("Hello %s\n\0" as *const str as *const i8, "printf\0" as *const str as *const i8);
 
         let hello: &[u8] = b"Hello\0" as &[u8; 6];
-        let ptr: *const u8 = hello as *const [u8] as *const u8;
+        let ptr: *const i8 = hello as *const [u8] as *const i8;
         puts(ptr);
 
         let world: Box<&str> = box "World!\0";
-        puts(*world as *const str as *const u8);
+        puts(*world as *const str as *const i8);
         world as Box<dyn SomeTrait>;
 
         assert_eq!(intrinsics::bitreverse(0b10101000u8), 0b00010101u8);
@@ -241,19 +236,22 @@ unsafe fn uninitialized<T>() -> T {
 
     assert_eq!(((|()| 42u8) as fn(()) -> u8)(()), 42);
 
-    extern {
-        #[linkage = "weak"]
-        static ABC: *const u8;
-    }
-
+    #[cfg(not(any(jit, windows)))]
     {
         extern {
-            #[linkage = "weak"]
+            #[linkage = "extern_weak"]
             static ABC: *const u8;
         }
-    }
 
-    unsafe { assert_eq!(ABC as usize, 0); }
+        {
+            extern {
+                #[linkage = "extern_weak"]
+                static ABC: *const u8;
+            }
+        }
+
+        unsafe { assert_eq!(ABC as usize, 0); }
+    }
 
     &mut (|| Some(0 as *const ())) as &mut dyn FnMut() -> Option<*const ()>;
 
@@ -263,6 +261,9 @@ unsafe fn uninitialized<T>() -> T {
     assert_eq!(f2 as i8, -128);
     assert_eq!(f2 as u8, 0);
 
+    let amount = 0;
+    assert_eq!(1u128 << amount, 1);
+
     static ANOTHER_STATIC: &u8 = &A_STATIC;
     assert_eq!(*ANOTHER_STATIC, 42);
 
@@ -282,8 +283,39 @@ struct ExternTypeWrapper {
     let slice_ptr = &[] as *const [u8];
     slice_ptr as *const u8;
 
-    #[cfg(not(jit))]
+    let repeat = [Some(42); 2];
+    assert_eq!(repeat[0], Some(42));
+    assert_eq!(repeat[1], Some(42));
+
+    from_decimal_string();
+
+    #[cfg(not(any(jit, windows)))]
     test_tls();
+
+    #[cfg(all(not(jit), target_os = "linux"))]
+    unsafe {
+        global_asm_test();
+    }
+
+    // Both statics have a reference that points to the same anonymous allocation.
+    static REF1: &u8 = &42;
+    static REF2: &u8 = REF1;
+    assert_eq!(*REF1, *REF2);
+}
+
+#[cfg(all(not(jit), target_os = "linux"))]
+extern "C" {
+    fn global_asm_test();
+}
+
+#[cfg(all(not(jit), target_os = "linux"))]
+global_asm! {
+    "
+    .global global_asm_test
+    global_asm_test:
+    // comment that would normally be removed by LLVM
+    ret
+    "
 }
 
 #[repr(C)]
@@ -351,7 +383,7 @@ fn test_tls() {
         // TLS of main thread must not have been changed by the other thread.
         assert_eq!(TLS, 42);
 
-        puts("TLS works!\n\0" as *const str as *const u8);
+        puts("TLS works!\n\0" as *const str as *const i8);
     }
 }
 
@@ -421,3 +453,23 @@ fn check_niche_behavior () {
         intrinsics::abort();
     }
 }
+
+fn from_decimal_string() {
+    loop {
+        let multiplier = 1;
+
+        take_multiplier_ref(&multiplier);
+
+        if multiplier == 1 {
+            break;
+        }
+
+        unreachable();
+    }
+}
+
+fn take_multiplier_ref(_multiplier: &u128) {}
+
+fn unreachable() -> ! {
+    panic("unreachable")
+}