[lld] [LLD][MinGW] Support machine:arm64x when invoked in MinGW mode. (PR #145343)

[via llvm-commits]

https://github.com/WhatAmISupposedToPutHere created https://github.com/llvm/llvm-project/pull/145343

Mingw mode already supports building machine:arm64ec arm64x binaries, support machine:arm64x ones too.

>From c7a9b985fe5709eeefafc59c19a68f115da1d0b8 Mon Sep 17 00:00:00 2001
From: Sasha Finkelstein <fnkl.kernel at gmail.com>
Date: Mon, 23 Jun 2025 15:40:46 +0200
Subject: [PATCH] [LLD][MinGW] Support machine:arm64x when invoked in MinGW
 mode.

Mingw mode already supports building machine:arm64ec arm64x binaries,
support machine:arm64x ones too.

Signed-off-by: Sasha Finkelstein <fnkl.kernel at gmail.com>
---
 lld/Common/DriverDispatcher.cpp | 2 +-
 lld/MinGW/Driver.cpp            | 2 ++
 lld/test/MinGW/driver.test      | 6 ++++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lld/Common/DriverDispatcher.cpp b/lld/Common/DriverDispatcher.cpp
index fe18c320983fa..34f0ed24b3df0 100644
--- a/lld/Common/DriverDispatcher.cpp
+++ b/lld/Common/DriverDispatcher.cpp
@@ -45,7 +45,7 @@ static cl::TokenizerCallback getDefaultQuotingStyle() {
 
 static bool isPETargetName(StringRef s) {
   return s == "i386pe" || s == "i386pep" || s == "thumb2pe" || s == "arm64pe" ||
-         s == "arm64ecpe";
+         s == "arm64ecpe" || s == "arm64xpe";
 }
 
 static std::optional<bool> isPETarget(llvm::ArrayRef<const char *> args) {
diff --git a/lld/MinGW/Driver.cpp b/lld/MinGW/Driver.cpp
index 98d48bdfcf311..5098dbd77b4fd 100644
--- a/lld/MinGW/Driver.cpp
+++ b/lld/MinGW/Driver.cpp
@@ -448,6 +448,8 @@ bool link(ArrayRef<const char *> argsArr, llvm::raw_ostream &stdoutOS,
       add("-machine:arm64");
     else if (s == "arm64ecpe")
       add("-machine:arm64ec");
+    else if (s == "arm64xpe")
+      add("-machine:arm64x");
     else
       error("unknown parameter: -m" + s);
   }
diff --git a/lld/test/MinGW/driver.test b/lld/test/MinGW/driver.test
index 907d2d87dda5c..618b888504320 100644
--- a/lld/test/MinGW/driver.test
+++ b/lld/test/MinGW/driver.test
@@ -31,6 +31,12 @@ ARM64EC-SAME: -machine:arm64ec
 ARM64EC-SAME: -alternatename:__image_base__=__ImageBase
 ARM64EC-SAME: foo.o
 
+RUN: ld.lld -### foo.o -m arm64xpe 2>&1 | FileCheck -check-prefix=ARM64X %s
+ARM64X:      -out:a.exe
+ARM64X-SAME: -machine:arm64x
+ARM64X-SAME: -alternatename:__image_base__=__ImageBase
+ARM64X-SAME: foo.o
+
 RUN: ld.lld -### foo.o -m i386pep -shared 2>&1 | FileCheck -check-prefix=SHARED %s
 RUN: ld.lld -### foo.o -m i386pep --shared 2>&1 | FileCheck -check-prefix=SHARED %s
 RUN: ld.lld -### foo.o -m i386pep --dll 2>&1 | FileCheck -check-prefix=SHARED %s