Auto merge of #123144 - dpaoliello:arm64eclib, r=GuillaumeGomez,ChrisDenton,wesleywiser

Add support for Arm64EC to the Standard Library

Adds the final pieces so that the standard library can be built for arm64ec-pc-windows-msvc (initially added in #119199)

* Bumps `windows-sys` to 0.56.0, which adds support for Arm64EC.
* Correctly set the `isEC` parameter for LLVM's `writeArchive` function.
* Add `#![feature(asm_experimental_arch)]` to library crates where Arm64EC inline assembly is used, as it is currently unstable.

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_llvm/llvm-wrapper/ArchiveWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/ArchiveWrapper.cpp
index 64e6c18092f..8871f410e36 100644
--- a/compiler/rustc_llvm/llvm-wrapper/ArchiveWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/ArchiveWrapper.cpp
@@ -175,7 +175,7 @@ extern "C" void LLVMRustArchiveMemberFree(LLVMRustArchiveMemberRef Member) {
 extern "C" LLVMRustResult
 LLVMRustWriteArchive(char *Dst, size_t NumMembers,
                      const LLVMRustArchiveMemberRef *NewMembers,
-                     bool WriteSymbtab, LLVMRustArchiveKind RustKind) {
+                     bool WriteSymbtab, LLVMRustArchiveKind RustKind, bool isEC) {
 
   std::vector<NewArchiveMember> Members;
   auto Kind = fromRust(RustKind);
@@ -207,7 +207,7 @@ LLVMRustWriteArchive(char *Dst, size_t NumMembers,
   auto Result = writeArchive(Dst, Members, WriteSymbtab, Kind, true, false);
 #else
   auto SymtabMode = WriteSymbtab ? SymtabWritingMode::NormalSymtab : SymtabWritingMode::NoSymtab;
-  auto Result = writeArchive(Dst, Members, SymtabMode, Kind, true, false);
+  auto Result = writeArchive(Dst, Members, SymtabMode, Kind, true, false, nullptr, isEC);
 #endif
   if (!Result)
     return LLVMRustResult::Success;