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authorDylan DPC <dylan.dpc@gmail.com>2020-10-26 03:09:00 +0100
committerGitHub <noreply@github.com>2020-10-26 03:09:00 +0100
commit147a001fd30b86b2810ff1ac5d1f353316dc0688 (patch)
tree07cb9eae21c4b9280b2b7bb9eea6c59dd3566a02 /compiler
parent98852320197c44e13be3759fc46bd8add5f24087 (diff)
parent0a91755ff4b6899e1c0675c48b4652e890ce63aa (diff)
downloadrust-147a001fd30b86b2810ff1ac5d1f353316dc0688.tar.gz
rust-147a001fd30b86b2810ff1ac5d1f353316dc0688.zip
Rollup merge of #78126 - shepmaster:aarch64-apple-darwin-valist, r=nagisa
Properly define va_arg and va_list for aarch64-apple-darwin

From [Apple][]:

> Because of these changes, the type `va_list` is an alias for `char*`,
> and not for the struct type in the generic procedure call standard.

With this change `/x.py test --stage 1 src/test/ui/abi/variadic-ffi`
passes.

Fixes #78092

[Apple]: https://developer.apple.com/documentation/xcode/writing_arm64_code_for_apple_platforms
Diffstat (limited to 'compiler')
-rw-r--r--compiler/rustc_codegen_llvm/src/va_arg.rs18
1 files changed, 8 insertions, 10 deletions
diff --git a/compiler/rustc_codegen_llvm/src/va_arg.rs b/compiler/rustc_codegen_llvm/src/va_arg.rs
index 5f820f83a94..b6a0516b8bc 100644
--- a/compiler/rustc_codegen_llvm/src/va_arg.rs
+++ b/compiler/rustc_codegen_llvm/src/va_arg.rs
@@ -173,26 +173,24 @@ pub(super) fn emit_va_arg(
     // is lacking in some instances, so we should only use it as a fallback.
     let target = &bx.cx.tcx.sess.target;
     let arch = &bx.cx.tcx.sess.target.arch;
-    match (&**arch, target.options.is_like_windows) {
+    match &**arch {
         // Windows x86
-        ("x86", true) => {
+        "x86" if target.options.is_like_windows => {
             emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(4).unwrap(), false)
         }
         // Generic x86
-        ("x86", _) => {
-            emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(4).unwrap(), true)
-        }
+        "x86" => emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(4).unwrap(), true),
         // Windows AArch64
-        ("aarch64", true) => {
+        "aarch64" if target.options.is_like_windows => {
             emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(8).unwrap(), false)
         }
-        // iOS AArch64
-        ("aarch64", _) if target.target_os == "ios" => {
+        // macOS / iOS AArch64
+        "aarch64" if target.options.is_like_osx => {
             emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(8).unwrap(), true)
         }
-        ("aarch64", _) => emit_aapcs_va_arg(bx, addr, target_ty),
+        "aarch64" => emit_aapcs_va_arg(bx, addr, target_ty),
         // Windows x86_64
-        ("x86_64", true) => {
+        "x86_64" if target.options.is_like_windows => {
             let target_ty_size = bx.cx.size_of(target_ty).bytes();
             let indirect: bool = target_ty_size > 8 || !target_ty_size.is_power_of_two();
             emit_ptr_va_arg(bx, addr, target_ty, indirect, Align::from_bytes(8).unwrap(), false)