Merge commit 'dec0daa8f6d0a0e1c702f169abb6bf3eee198c67' into sync_cg_clif-2023-03-15

3 files changed, 314 insertions, 83 deletions

diff --git a/compiler/rustc_codegen_cranelift/example/mini_core.rs b/compiler/rustc_codegen_cranelift/example/mini_core.rs
index 1f9db1eb2a9..73b83b89f6d 100644
--- a/compiler/rustc_codegen_cranelift/example/mini_core.rs
+++ b/compiler/rustc_codegen_cranelift/example/mini_core.rs
@@ -518,6 +518,17 @@ pub struct Box<T: ?Sized>(Unique<T>, ());
 
 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Box<U>> for Box<T> {}
 
+impl<T> Box<T> {
+    pub fn new(val: T) -> Box<T> {
+        unsafe {
+            let size = intrinsics::size_of::<T>();
+            let ptr = libc::malloc(size);
+            intrinsics::copy(&val as *const T as *const u8, ptr, size);
+            Box(Unique { pointer: NonNull(ptr as *const T), _marker: PhantomData }, ())
+        }
+    }
+}
+
 impl<T: ?Sized> Drop for Box<T> {
     fn drop(&mut self) {
         // drop is currently performed by compiler.
diff --git a/compiler/rustc_codegen_cranelift/example/mini_core_hello_world.rs b/compiler/rustc_codegen_cranelift/example/mini_core_hello_world.rs
index 04e7795bbfa..6ad3268e70d 100644
--- a/compiler/rustc_codegen_cranelift/example/mini_core_hello_world.rs
+++ b/compiler/rustc_codegen_cranelift/example/mini_core_hello_world.rs
@@ -1,16 +1,16 @@
-#![feature(no_core, lang_items, never_type, linkage, extern_types, thread_local)]
+#![feature(no_core, lang_items, never_type, linkage, extern_types, thread_local, repr_simd)]
 #![no_core]
 #![allow(dead_code, non_camel_case_types)]
 
 extern crate mini_core;
 
-use mini_core::*;
 use mini_core::libc::*;
+use mini_core::*;
 
 macro_rules! assert {
     ($e:expr) => {
         if !$e {
-            panic(stringify!(! $e));
+            panic(stringify!(!$e));
         }
     };
 }
@@ -20,7 +20,7 @@ macro_rules! assert_eq {
         if $l != $r {
             panic(stringify!($l != $r));
         }
-    }
+    };
 }
 
 #[lang = "termination"]
@@ -96,9 +96,15 @@ fn start<T: Termination + 'static>(
     _sigpipe: u8,
 ) -> isize {
     if argc == 3 {
-        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)); }
+        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() as isize
@@ -107,7 +113,6 @@ fn start<T: Termination + 'static>(
 static mut NUM: u8 = 6 * 7;
 static NUM_REF: &'static u8 = unsafe { &NUM };
 
-
 unsafe fn zeroed<T>() -> T {
     let mut uninit = MaybeUninit { uninit: () };
     intrinsics::write_bytes(&mut uninit.value.value as *mut T, 0, 1);
@@ -144,10 +149,7 @@ extern "C" fn bool_struct_in_11(_arg0: bool_11) {}
 
 #[allow(unreachable_code)] // FIXME false positive
 fn main() {
-    take_unique(Unique {
-        pointer: unsafe { NonNull(1 as *mut ()) },
-        _marker: PhantomData,
-    });
+    take_unique(Unique { pointer: unsafe { NonNull(1 as *mut ()) }, _marker: PhantomData });
     take_f32(0.1);
 
     call_return_u128_pair();
@@ -202,17 +204,17 @@ fn main() {
         assert_eq!(intrinsics::size_of_val(&0u32) as u8, 4);
 
         assert_eq!(intrinsics::min_align_of::<u16>() as u8, 2);
-        assert_eq!(intrinsics::min_align_of_val(&a) as u8, intrinsics::min_align_of::<&str>() as u8);
+        assert_eq!(
+            intrinsics::min_align_of_val(&a) as u8,
+            intrinsics::min_align_of::<&str>() as u8
+        );
 
         assert!(!intrinsics::needs_drop::<u8>());
         assert!(!intrinsics::needs_drop::<[u8]>());
         assert!(intrinsics::needs_drop::<NoisyDrop>());
         assert!(intrinsics::needs_drop::<NoisyDropUnsized>());
 
-        Unique {
-            pointer: NonNull(1 as *mut &str),
-            _marker: PhantomData,
-        } as Unique<dyn SomeTrait>;
+        Unique { pointer: NonNull(1 as *mut &str), _marker: PhantomData } as Unique<dyn SomeTrait>;
 
         struct MyDst<T: ?Sized>(T);
 
@@ -238,19 +240,17 @@ fn main() {
         }
     }
 
-    let _ = Box::new(NoisyDrop {
-        text: "Boxed outer got dropped!\0",
-        inner: NoisyDropInner,
-    }) as Box<dyn SomeTrait>;
+    let _ = Box::new(NoisyDrop { text: "Boxed outer got dropped!\0", inner: NoisyDropInner })
+        as Box<dyn SomeTrait>;
 
     const FUNC_REF: Option<fn()> = Some(main);
     match FUNC_REF {
-        Some(_) => {},
+        Some(_) => {}
         None => assert!(false),
     }
 
     match Ordering::Less {
-        Ordering::Less => {},
+        Ordering::Less => {}
         _ => assert!(false),
     }
 
@@ -266,19 +266,21 @@ fn main() {
 
     #[cfg(not(any(jit, windows)))]
     {
-        extern {
+        extern "C" {
             #[linkage = "extern_weak"]
             static ABC: *const u8;
         }
 
         {
-            extern {
+            extern "C" {
                 #[linkage = "extern_weak"]
                 static ABC: *const u8;
             }
         }
 
-        unsafe { assert_eq!(ABC as usize, 0); }
+        unsafe {
+            assert_eq!(ABC as usize, 0);
+        }
     }
 
     &mut (|| Some(0 as *const ())) as &mut dyn FnMut() -> Option<*const ()>;
@@ -339,7 +341,13 @@ fn main() {
 
         assert_eq!(unsafe { intrinsics::size_of_val(x) }, 0);
         assert_eq!(unsafe { intrinsics::min_align_of_val(x) }, 1);
-}
+    }
+
+    #[repr(simd)]
+    struct V([f64; 2]);
+
+    let f = V([0.0, 1.0]);
+    let _a = f.0[0];
 }
 
 #[cfg(all(not(jit), target_arch = "x86_64", any(target_os = "linux", target_os = "darwin")))]
@@ -392,13 +400,10 @@ extern "C" {
         native: *mut pthread_t,
         attr: *const pthread_attr_t,
         f: extern "C" fn(_: *mut c_void) -> *mut c_void,
-        value: *mut c_void
+        value: *mut c_void,
     ) -> c_int;
 
-    fn pthread_join(
-        native: pthread_t,
-        value: *mut *mut c_void
-    ) -> c_int;
+    fn pthread_join(native: pthread_t, value: *mut *mut c_void) -> c_int;
 }
 
 type DWORD = u32;
@@ -410,10 +415,7 @@ type HANDLE = *mut c_void;
 #[link(name = "msvcrt")]
 #[cfg(windows)]
 extern "C" {
-    fn WaitForSingleObject(
-        hHandle: LPVOID,
-        dwMilliseconds: DWORD
-    ) -> DWORD;
+    fn WaitForSingleObject(hHandle: LPVOID, dwMilliseconds: DWORD) -> DWORD;
 
     fn CreateThread(
         lpThreadAttributes: LPVOID, // Technically LPSECURITY_ATTRIBUTES, but we don't use it anyway
@@ -421,7 +423,7 @@ extern "C" {
         lpStartAddress: extern "C" fn(_: *mut c_void) -> *mut c_void,
         lpParameter: LPVOID,
         dwCreationFlags: DWORD,
-        lpThreadId: LPDWORD
+        lpThreadId: LPDWORD,
     ) -> HANDLE;
 }
 
@@ -447,9 +449,7 @@ impl Thread {
                 assert!(false);
             }
 
-            Thread {
-                handle: thread,
-            }
+            Thread { handle: thread }
         }
 
         #[cfg(windows)]
@@ -460,13 +460,10 @@ impl Thread {
                 assert!(false);
             }
 
-            Thread {
-                handle,
-            }
+            Thread { handle }
         }
     }
 
-
     unsafe fn join(self) {
         #[cfg(unix)]
         {
@@ -483,16 +480,15 @@ impl Thread {
     }
 }
 
-
-
-
 #[thread_local]
 #[cfg(not(jit))]
 static mut TLS: u8 = 42;
 
 #[cfg(not(jit))]
 extern "C" fn mutate_tls(_: *mut c_void) -> *mut c_void {
-    unsafe { TLS = 0; }
+    unsafe {
+        TLS = 0;
+    }
     0 as *mut c_void
 }
 
@@ -531,44 +527,267 @@ pub enum E1 {
 pub enum E2<X> {
     V1 { f: bool },
 
-    /*_00*/ _01(X), _02(X), _03(X), _04(X), _05(X), _06(X), _07(X),
-    _08(X), _09(X), _0A(X), _0B(X), _0C(X), _0D(X), _0E(X), _0F(X),
-    _10(X), _11(X), _12(X), _13(X), _14(X), _15(X), _16(X), _17(X),
-    _18(X), _19(X), _1A(X), _1B(X), _1C(X), _1D(X), _1E(X), _1F(X),
-    _20(X), _21(X), _22(X), _23(X), _24(X), _25(X), _26(X), _27(X),
-    _28(X), _29(X), _2A(X), _2B(X), _2C(X), _2D(X), _2E(X), _2F(X),
-    _30(X), _31(X), _32(X), _33(X), _34(X), _35(X), _36(X), _37(X),
-    _38(X), _39(X), _3A(X), _3B(X), _3C(X), _3D(X), _3E(X), _3F(X),
-    _40(X), _41(X), _42(X), _43(X), _44(X), _45(X), _46(X), _47(X),
-    _48(X), _49(X), _4A(X), _4B(X), _4C(X), _4D(X), _4E(X), _4F(X),
-    _50(X), _51(X), _52(X), _53(X), _54(X), _55(X), _56(X), _57(X),
-    _58(X), _59(X), _5A(X), _5B(X), _5C(X), _5D(X), _5E(X), _5F(X),
-    _60(X), _61(X), _62(X), _63(X), _64(X), _65(X), _66(X), _67(X),
-    _68(X), _69(X), _6A(X), _6B(X), _6C(X), _6D(X), _6E(X), _6F(X),
-    _70(X), _71(X), _72(X), _73(X), _74(X), _75(X), _76(X), _77(X),
-    _78(X), _79(X), _7A(X), _7B(X), _7C(X), _7D(X), _7E(X), _7F(X),
-    _80(X), _81(X), _82(X), _83(X), _84(X), _85(X), _86(X), _87(X),
-    _88(X), _89(X), _8A(X), _8B(X), _8C(X), _8D(X), _8E(X), _8F(X),
-    _90(X), _91(X), _92(X), _93(X), _94(X), _95(X), _96(X), _97(X),
-    _98(X), _99(X), _9A(X), _9B(X), _9C(X), _9D(X), _9E(X), _9F(X),
-    _A0(X), _A1(X), _A2(X), _A3(X), _A4(X), _A5(X), _A6(X), _A7(X),
-    _A8(X), _A9(X), _AA(X), _AB(X), _AC(X), _AD(X), _AE(X), _AF(X),
-    _B0(X), _B1(X), _B2(X), _B3(X), _B4(X), _B5(X), _B6(X), _B7(X),
-    _B8(X), _B9(X), _BA(X), _BB(X), _BC(X), _BD(X), _BE(X), _BF(X),
-    _C0(X), _C1(X), _C2(X), _C3(X), _C4(X), _C5(X), _C6(X), _C7(X),
-    _C8(X), _C9(X), _CA(X), _CB(X), _CC(X), _CD(X), _CE(X), _CF(X),
-    _D0(X), _D1(X), _D2(X), _D3(X), _D4(X), _D5(X), _D6(X), _D7(X),
-    _D8(X), _D9(X), _DA(X), _DB(X), _DC(X), _DD(X), _DE(X), _DF(X),
-    _E0(X), _E1(X), _E2(X), _E3(X), _E4(X), _E5(X), _E6(X), _E7(X),
-    _E8(X), _E9(X), _EA(X), _EB(X), _EC(X), _ED(X), _EE(X), _EF(X),
-    _F0(X), _F1(X), _F2(X), _F3(X), _F4(X), _F5(X), _F6(X), _F7(X),
-    _F8(X), _F9(X), _FA(X), _FB(X), _FC(X), _FD(X), _FE(X), _FF(X),
+    /*_00*/ _01(X),
+    _02(X),
+    _03(X),
+    _04(X),
+    _05(X),
+    _06(X),
+    _07(X),
+    _08(X),
+    _09(X),
+    _0A(X),
+    _0B(X),
+    _0C(X),
+    _0D(X),
+    _0E(X),
+    _0F(X),
+    _10(X),
+    _11(X),
+    _12(X),
+    _13(X),
+    _14(X),
+    _15(X),
+    _16(X),
+    _17(X),
+    _18(X),
+    _19(X),
+    _1A(X),
+    _1B(X),
+    _1C(X),
+    _1D(X),
+    _1E(X),
+    _1F(X),
+    _20(X),
+    _21(X),
+    _22(X),
+    _23(X),
+    _24(X),
+    _25(X),
+    _26(X),
+    _27(X),
+    _28(X),
+    _29(X),
+    _2A(X),
+    _2B(X),
+    _2C(X),
+    _2D(X),
+    _2E(X),
+    _2F(X),
+    _30(X),
+    _31(X),
+    _32(X),
+    _33(X),
+    _34(X),
+    _35(X),
+    _36(X),
+    _37(X),
+    _38(X),
+    _39(X),
+    _3A(X),
+    _3B(X),
+    _3C(X),
+    _3D(X),
+    _3E(X),
+    _3F(X),
+    _40(X),
+    _41(X),
+    _42(X),
+    _43(X),
+    _44(X),
+    _45(X),
+    _46(X),
+    _47(X),
+    _48(X),
+    _49(X),
+    _4A(X),
+    _4B(X),
+    _4C(X),
+    _4D(X),
+    _4E(X),
+    _4F(X),
+    _50(X),
+    _51(X),
+    _52(X),
+    _53(X),
+    _54(X),
+    _55(X),
+    _56(X),
+    _57(X),
+    _58(X),
+    _59(X),
+    _5A(X),
+    _5B(X),
+    _5C(X),
+    _5D(X),
+    _5E(X),
+    _5F(X),
+    _60(X),
+    _61(X),
+    _62(X),
+    _63(X),
+    _64(X),
+    _65(X),
+    _66(X),
+    _67(X),
+    _68(X),
+    _69(X),
+    _6A(X),
+    _6B(X),
+    _6C(X),
+    _6D(X),
+    _6E(X),
+    _6F(X),
+    _70(X),
+    _71(X),
+    _72(X),
+    _73(X),
+    _74(X),
+    _75(X),
+    _76(X),
+    _77(X),
+    _78(X),
+    _79(X),
+    _7A(X),
+    _7B(X),
+    _7C(X),
+    _7D(X),
+    _7E(X),
+    _7F(X),
+    _80(X),
+    _81(X),
+    _82(X),
+    _83(X),
+    _84(X),
+    _85(X),
+    _86(X),
+    _87(X),
+    _88(X),
+    _89(X),
+    _8A(X),
+    _8B(X),
+    _8C(X),
+    _8D(X),
+    _8E(X),
+    _8F(X),
+    _90(X),
+    _91(X),
+    _92(X),
+    _93(X),
+    _94(X),
+    _95(X),
+    _96(X),
+    _97(X),
+    _98(X),
+    _99(X),
+    _9A(X),
+    _9B(X),
+    _9C(X),
+    _9D(X),
+    _9E(X),
+    _9F(X),
+    _A0(X),
+    _A1(X),
+    _A2(X),
+    _A3(X),
+    _A4(X),
+    _A5(X),
+    _A6(X),
+    _A7(X),
+    _A8(X),
+    _A9(X),
+    _AA(X),
+    _AB(X),
+    _AC(X),
+    _AD(X),
+    _AE(X),
+    _AF(X),
+    _B0(X),
+    _B1(X),
+    _B2(X),
+    _B3(X),
+    _B4(X),
+    _B5(X),
+    _B6(X),
+    _B7(X),
+    _B8(X),
+    _B9(X),
+    _BA(X),
+    _BB(X),
+    _BC(X),
+    _BD(X),
+    _BE(X),
+    _BF(X),
+    _C0(X),
+    _C1(X),
+    _C2(X),
+    _C3(X),
+    _C4(X),
+    _C5(X),
+    _C6(X),
+    _C7(X),
+    _C8(X),
+    _C9(X),
+    _CA(X),
+    _CB(X),
+    _CC(X),
+    _CD(X),
+    _CE(X),
+    _CF(X),
+    _D0(X),
+    _D1(X),
+    _D2(X),
+    _D3(X),
+    _D4(X),
+    _D5(X),
+    _D6(X),
+    _D7(X),
+    _D8(X),
+    _D9(X),
+    _DA(X),
+    _DB(X),
+    _DC(X),
+    _DD(X),
+    _DE(X),
+    _DF(X),
+    _E0(X),
+    _E1(X),
+    _E2(X),
+    _E3(X),
+    _E4(X),
+    _E5(X),
+    _E6(X),
+    _E7(X),
+    _E8(X),
+    _E9(X),
+    _EA(X),
+    _EB(X),
+    _EC(X),
+    _ED(X),
+    _EE(X),
+    _EF(X),
+    _F0(X),
+    _F1(X),
+    _F2(X),
+    _F3(X),
+    _F4(X),
+    _F5(X),
+    _F6(X),
+    _F7(X),
+    _F8(X),
+    _F9(X),
+    _FA(X),
+    _FB(X),
+    _FC(X),
+    _FD(X),
+    _FE(X),
+    _FF(X),
 
     V3,
     V4,
 }
 
-fn check_niche_behavior () {
+fn check_niche_behavior() {
     if let E1::V2 { .. } = (E1::V1 { f: true }) {
         intrinsics::abort();
     }
diff --git a/compiler/rustc_codegen_cranelift/example/std_example.rs b/compiler/rustc_codegen_cranelift/example/std_example.rs
index 8481d9c39a3..e34b35d5c4a 100644
--- a/compiler/rustc_codegen_cranelift/example/std_example.rs
+++ b/compiler/rustc_codegen_cranelift/example/std_example.rs
@@ -58,8 +58,9 @@ fn main() {
     assert_eq!(0b0000000000000000000000000010000000000000000000000000000000000000_0000000000000000000000000000000000001000000000000000000010000000u128.trailing_zeros(), 7);
     assert_eq!(core::intrinsics::saturating_sub(0, -170141183460469231731687303715884105728i128), 170141183460469231731687303715884105727i128);
 
-    let _d = 0i128.checked_div(2i128);
-    let _d = 0u128.checked_div(2u128);
+    std::hint::black_box(std::hint::black_box(7571400400375753350092698930310845914i128) * 10);
+    assert!(0i128.checked_div(2i128).is_some());
+    assert!(0u128.checked_div(2u128).is_some());
     assert_eq!(1u128 + 2, 3);
 
     assert_eq!(0b100010000000000000000000000000000u128 >> 10, 0b10001000000000000000000u128);