git: 8f39cbf4f30c - stable/13 - llvm: make sure to use ELFv2 ABI on powerpc64

The branch stable/13 has been updated by pkubaj:

URL: https://cgit.FreeBSD.org/src/commit/?id=8f39cbf4f30c9a8cd3f593dc2b373a289785d4b6

commit 8f39cbf4f30c9a8cd3f593dc2b373a289785d4b6
Author:     Piotr Kubaj <pkubaj@FreeBSD.org>
AuthorDate: 2023-02-16 23:49:43 +0000
Commit:     Piotr Kubaj <pkubaj@FreeBSD.org>
CommitDate: 2023-02-21 01:19:33 +0000

    llvm: make sure to use ELFv2 ABI on powerpc64
    
    Currently LLVM is more or less set up to use ELFv2, but it still defaults to
    ELFv1 in some places. This causes lld to generate broken binaries when used
    with LTO.
    
    PR:     269455
    Approved by:    dim
    MFC after:      3 days
    
    (cherry picked from commit a1ffc2fe9ce54a498c410dcab86495569dbaa7cc)
---
 contrib/llvm-project/clang/lib/Basic/Targets/PPC.h                | 3 +++
 contrib/llvm-project/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/contrib/llvm-project/clang/lib/Basic/Targets/PPC.h b/contrib/llvm-project/clang/lib/Basic/Targets/PPC.h
index ac52eb219f54..cd9bf0d8e359 100644
--- a/contrib/llvm-project/clang/lib/Basic/Targets/PPC.h
+++ b/contrib/llvm-project/clang/lib/Basic/Targets/PPC.h
@@ -425,6 +425,9 @@ public:
     } else if ((Triple.getArch() == llvm::Triple::ppc64le)) {
       DataLayout = "e-m:e-i64:64-n32:64";
       ABI = "elfv2";
+    } else if (Triple.isOSFreeBSD() && (Triple.getOSMajorVersion() == 0 || Triple.getOSMajorVersion() >= 13)) {
+      DataLayout = "E-m:e-i64:64-n32:64";
+      ABI = "elfv2";
     } else {
       DataLayout = "E-m:e-i64:64-n32:64";
       ABI = "elfv1";
diff --git a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
index 3eff00fc3c05..9b7145aafead 100644
--- a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -221,8 +221,11 @@ static PPCTargetMachine::PPCABI computeTargetABI(const Triple &TT,
   assert(Options.MCOptions.getABIName().empty() &&
          "Unknown target-abi option!");
 
-  if (TT.isMacOSX())
+  if (TT.isMacOSX()) {
     return PPCTargetMachine::PPC_ABI_UNKNOWN;
+  } else if (TT.isOSFreeBSD() && TT.getArch() == Triple::ppc64 && (TT.getOSMajorVersion() == 0 || TT.getOSMajorVersion() >= 13)) {
+    return PPCTargetMachine::PPC_ABI_ELFv2;
+  }
 
   switch (TT.getArch()) {
   case Triple::ppc64le: