release/21.x: Adding Loongarch64 to OpenBSD parts (#149737)

[llvmbot]

Backport 5eecbc0

Requested by: @brad0

[llvmbot]

@brad0 What do you think about merging this PR to the release branch?

[llvmbot]

@llvm/pr-subscribers-clang

@llvm/pr-subscribers-clang-driver

Author: None (llvmbot)

Changes

Backport 5eecbc0

Requested by: @brad0

---

Full diff: https://github.com/llvm/llvm-project/pull/150529.diff

4 Files Affected:

• (modified) clang/lib/Basic/Targets.cpp (+3)
• (modified) clang/lib/Basic/Targets/OSTargets.h (+1)
• (modified) clang/lib/Driver/ToolChains/OpenBSD.cpp (+1-1)
• (modified) clang/test/Driver/openbsd.c (+4-1)

diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index af1111a863308..5d11578893c66 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -769,6 +769,9 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
     case llvm::Triple::FreeBSD:
       return std::make_unique<FreeBSDTargetInfo<LoongArch64TargetInfo>>(Triple,
                                                                         Opts);
+    case llvm::Triple::OpenBSD:
+      return std::make_unique<OpenBSDTargetInfo<LoongArch64TargetInfo>>(Triple,
+                                                                        Opts);
     default:
       return std::make_unique<LoongArch64TargetInfo>(Triple, Opts);
     }
diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index 30d861a7ca605..97b2caa22d8e4 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -496,6 +496,7 @@ class LLVM_LIBRARY_VISIBILITY OpenBSDTargetInfo : public OSTargetInfo<Target> {
     case llvm::Triple::sparcv9:
       this->MCountName = "_mcount";
       break;
+    case llvm::Triple::loongarch64:
     case llvm::Triple::riscv64:
       break;
     }
diff --git a/clang/lib/Driver/ToolChains/OpenBSD.cpp b/clang/lib/Driver/ToolChains/OpenBSD.cpp
index 79b1b6960da1f..8f589186af343 100644
--- a/clang/lib/Driver/ToolChains/OpenBSD.cpp
+++ b/clang/lib/Driver/ToolChains/OpenBSD.cpp
@@ -161,7 +161,7 @@ void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (Nopie || Profiling)
     CmdArgs.push_back("-nopie");
 
-  if (Triple.isRISCV64()) {
+  if (Triple.isLoongArch64() || Triple.isRISCV64()) {
     CmdArgs.push_back("-X");
     if (Args.hasArg(options::OPT_mno_relax))
       CmdArgs.push_back("--no-relax");
diff --git a/clang/test/Driver/openbsd.c b/clang/test/Driver/openbsd.c
index 6639e9d2d9d67..1f12cfca9488b 100644
--- a/clang/test/Driver/openbsd.c
+++ b/clang/test/Driver/openbsd.c
@@ -127,9 +127,12 @@
 // UNWIND-TABLES: "-funwind-tables=2"
 // NO-UNWIND-TABLES-NOT: "-funwind-tables=2"
 
-// Check that the -X and --no-relax flags are passed to the linker on riscv64
+// Check that the -X and --no-relax flags are passed to the linker
+// RUN: %clang --target=loongarch64-unknown-openbsd -mno-relax -### %s 2>&1 \
+// RUN:   | FileCheck --check-prefix=LA64-FLAGS %s
 // RUN: %clang --target=riscv64-unknown-openbsd -mno-relax -### %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=RISCV64-FLAGS %s
+// LA64-FLAGS: "-X" "--no-relax"
 // RISCV64-FLAGS: "-X" "--no-relax"
 
 // Check passing LTO flags to the linker

[github-actions]

@brad0 (or anyone else). If you would like to add a note about this fix in the release notes (completely optional). Please reply to this comment with a one or two sentence description of the fix. When you are done, please add the release:note label to this PR.