This patches LLVM to use ELFv2 on ppc64 unconditionally unless overridden. We
need this because unlike most distros we use ELFv2 for both glibc and musl
on big endian ppc64.

diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index 0634833e..b7cbc2e7 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -222,9 +222,8 @@ static PPCTargetMachine::PPCABI computeTargetABI(const Triple &TT,
 
   switch (TT.getArch()) {
   case Triple::ppc64le:
-    return PPCTargetMachine::PPC_ABI_ELFv2;
   case Triple::ppc64:
-    return PPCTargetMachine::PPC_ABI_ELFv1;
+    return PPCTargetMachine::PPC_ABI_ELFv2;
   default:
     return PPCTargetMachine::PPC_ABI_UNKNOWN;
   }
diff --git a/test/CodeGen/PowerPC/ppc64-elf-abi.ll b/test/CodeGen/PowerPC/ppc64-elf-abi.ll
index 8b1cf6b5..296a2afa 100644
--- a/llvm/test/CodeGen/PowerPC/ppc64-elf-abi.ll
+++ b/llvm/test/CodeGen/PowerPC/ppc64-elf-abi.ll
@@ -1,4 +1,5 @@
-; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s -check-prefix=CHECK-ELFv1
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s -check-prefix=CHECK-ELFv2
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-musl < %s | FileCheck %s -check-prefix=CHECK-ELFv2
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -target-abi elfv1 < %s | FileCheck %s -check-prefix=CHECK-ELFv1
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -target-abi elfv2 < %s | FileCheck %s -check-prefix=CHECK-ELFv2
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s -check-prefix=CHECK-ELFv2
