[llvm-branch-commits] [clang] release/21.x: [Driver] Enable outline atomics for OpenBSD/aarch64 (#155713) (PR #155759)

[via llvm-branch-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-driver

Author: None (llvmbot)

<details>
<summary>Changes</summary>

Backport 5d774ec8d183cbbb243c57f50d891822211d3ec2

Requested by: @<!-- -->brad0

---
Full diff: https://github.com/llvm/llvm-project/pull/155759.diff


2 Files Affected:

- (modified) clang/lib/Driver/ToolChains/OpenBSD.h (+5) 
- (modified) clang/test/Driver/aarch64-features.c (+1-1) 


``````````diff
diff --git a/clang/lib/Driver/ToolChains/OpenBSD.h b/clang/lib/Driver/ToolChains/OpenBSD.h
index 11b873cb30032..ad0f9e6799568 100644
--- a/clang/lib/Driver/ToolChains/OpenBSD.h
+++ b/clang/lib/Driver/ToolChains/OpenBSD.h
@@ -79,6 +79,11 @@ class LLVM_LIBRARY_VISIBILITY OpenBSD : public Generic_ELF {
   void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
                            llvm::opt::ArgStringList &CmdArgs) const override;
 
+  bool IsAArch64OutlineAtomicsDefault(
+      const llvm::opt::ArgList &Args) const override {
+    return true;
+  }
+
   std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component,
                             FileType Type = ToolChain::FT_Static,
                             bool IsFortran = false) const override;
diff --git a/clang/test/Driver/aarch64-features.c b/clang/test/Driver/aarch64-features.c
index d2075c91314a8..05dd3bf39fae3 100644
--- a/clang/test/Driver/aarch64-features.c
+++ b/clang/test/Driver/aarch64-features.c
@@ -45,7 +45,7 @@
 // RUN: -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-OUTLINE-ATOMICS-OFF %s
 
 // RUN: %clang --target=aarch64-unknown-openbsd -rtlib=compiler-rt \
-// RUN: -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-OUTLINE-ATOMICS-OFF %s
+// RUN: -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-OUTLINE-ATOMICS-ON %s
 
 // RUN: %clang --target=aarch64-linux-gnu -rtlib=libgcc \
 // RUN: --gcc-toolchain=%S/Inputs/aarch64-linux-gnu-tree/gcc-10 \

``````````

</details>


https://github.com/llvm/llvm-project/pull/155759