Hook up OpenBSD 64-bit PowerPC support

(cherry picked from commit 4eb4ebf)

Author: brad0

clang/lib/Basic/Targets.cpp

@@ -346,6 +346,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
       return new FreeBSDTargetInfo<PPC64TargetInfo>(Triple, Opts);
     case llvm::Triple::NetBSD:
       return new NetBSDTargetInfo<PPC64TargetInfo>(Triple, Opts);
+    case llvm::Triple::OpenBSD:
+      return new OpenBSDTargetInfo<PPC64TargetInfo>(Triple, Opts);
     case llvm::Triple::AIX:
       return new AIXPPC64TargetInfo(Triple, Opts);
     default:
@@ -358,6 +360,8 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
       return new LinuxTargetInfo<PPC64TargetInfo>(Triple, Opts);
     case llvm::Triple::NetBSD:
       return new NetBSDTargetInfo<PPC64TargetInfo>(Triple, Opts);
+    case llvm::Triple::OpenBSD:
+      return new OpenBSDTargetInfo<PPC64TargetInfo>(Triple, Opts);
     default:
       return new PPC64TargetInfo(Triple, Opts);
     }

clang/lib/Basic/Targets/OSTargets.h

@@ -478,6 +478,8 @@ class LLVM_LIBRARY_VISIBILITY OpenBSDTargetInfo : public OSTargetInfo<Target> {
     case llvm::Triple::mips64:
     case llvm::Triple::mips64el:
     case llvm::Triple::ppc:
+    case llvm::Triple::ppc64:
+    case llvm::Triple::ppc64le:
     case llvm::Triple::sparcv9:
       this->MCountName = "_mcount";
       break;

clang/lib/Basic/Targets/PPC.h

@@ -414,8 +414,8 @@ class LLVM_LIBRARY_VISIBILITY PPC64TargetInfo : public PPCTargetInfo {
       ABI = "elfv1";
     }
 
-    if (Triple.isOSFreeBSD() || Triple.getOS() == llvm::Triple::AIX ||
-        Triple.isMusl()) {
+    if (Triple.isOSFreeBSD() || Triple.isOSOpenBSD() ||
+        Triple.getOS() == llvm::Triple::AIX || Triple.isMusl()) {
       LongDoubleWidth = LongDoubleAlign = 64;
       LongDoubleFormat = &llvm::APFloat::IEEEdouble();
     }

clang/lib/Driver/ToolChains/Clang.cpp

@@ -1879,8 +1879,8 @@ void Clang::AddPPCTargetArgs(const ArgList &Args,
         ABIName = "elfv1-qpx";
         break;
       }
-
-      if (T.isMusl() || (T.isOSFreeBSD() && T.getOSMajorVersion() >= 13))
+      if ((T.isOSFreeBSD() && T.getOSMajorVersion() >= 13) ||
+          T.isOSOpenBSD() || T.isMusl()
         ABIName = "elfv2";
       else
         ABIName = "elfv1";

clang/test/Driver/ppc-abi.c

@@ -28,6 +28,7 @@
 // RUN: %clang -target powerpc64-unknown-freebsd12 %s -### 2>&1 | FileCheck --check-prefix=CHECK-ELFv1 %s
 // RUN: %clang -target powerpc64-unknown-freebsd13 %s -### 2>&1 | FileCheck --check-prefix=CHECK-ELFv2-BE %s
 // RUN: %clang -target powerpc64-unknown-freebsd14 %s -### 2>&1 | FileCheck --check-prefix=CHECK-ELFv2-BE %s
+// RUN: %clang -target powerpc64-unknown-openbsd %s -### 2>&1 | FileCheck --check-prefix=CHECK-ELFv2-BE-PIE %
 // RUN: %clang -target powerpc64-linux-musl %s -### 2>&1 | FileCheck --check-prefix=CHECK-ELFv2-BE-PIE %s
 
 // CHECK-ELFv1: "-mrelocation-model" "static"

clang/test/Preprocessor/init-ppc64.c

@@ -1078,6 +1078,7 @@
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-unknown-freebsd11 -target-abi elfv1 -xc /dev/null | FileCheck --check-prefix=PPC64-ELFv1 %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-unknown-freebsd12 -target-abi elfv1 -xc /dev/null | FileCheck --check-prefix=PPC64-ELFv1 %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-unknown-freebsd13 -target-abi elfv2 -xc /dev/null | FileCheck --check-prefix=PPC64-ELFv2 %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-unknown-openbsd -target-abi elfv2 -xc /dev/null | FileCheck --check-prefix=PPC64-ELFv2 %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-linux-musl -target-abi elfv2 -xc /dev/null | FileCheck --check-prefix=PPC64-ELFv2 %s
 
 // PPC64-ELFv1:#define _CALL_ELF 1

clang/test/Preprocessor/init.c

@@ -7321,6 +7321,8 @@
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=arm-unknown-openbsd6.1-gnueabi < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=i386-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64le-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips64-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=mips64el-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=sparc64-unknown-openbsd6.1 < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD %s