Auto merge of #105713 - bjorn3:sync_cg_clif-2022-12-14, r=bjorn3

Sync rustc_codegen_cranelift

This time there are a bunch of bugfixes, some new llvm intrinsic implementations and refactorings to the build system in preparation for running cg_clif tests as part of `./x.py test`.

r? `@ghost`

`@rustbot` label +A-codegen +A-cranelift +T-compiler

1 files changed, 2 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_cranelift/example/std_example.rs b/compiler/rustc_codegen_cranelift/example/std_example.rs
index ad108c34992..8481d9c39a3 100644
--- a/compiler/rustc_codegen_cranelift/example/std_example.rs
+++ b/compiler/rustc_codegen_cranelift/example/std_example.rs
@@ -164,6 +164,8 @@ unsafe fn test_simd() {
     let cmp_eq = _mm_cmpeq_epi8(y, y);
     let cmp_lt = _mm_cmplt_epi8(y, y);
 
+    let (zero0, zero1) = std::mem::transmute::<_, (u64, u64)>(x);
+    assert_eq!((zero0, zero1), (0, 0));
     assert_eq!(std::mem::transmute::<_, [u16; 8]>(or), [7, 7, 7, 7, 7, 7, 7, 7]);
     assert_eq!(std::mem::transmute::<_, [u16; 8]>(cmp_eq), [0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff]);
     assert_eq!(std::mem::transmute::<_, [u16; 8]>(cmp_lt), [0, 0, 0, 0, 0, 0, 0, 0]);