From e8eaa2afd51ed9950096359a040ba1603907cdd1 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Wed, 8 Aug 2018 22:06:09 -0500
Subject: [PATCH] Use ELFv2 ABI on powerpc64 musl (LLVM half)

---
 src/rustllvm/PassWrapper.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/rustllvm/PassWrapper.cpp b/src/rustllvm/PassWrapper.cpp
index 85fbc4bf378a5..15c3ab18d90e1 100644
--- a/src/rustllvm/PassWrapper.cpp
+++ b/src/rustllvm/PassWrapper.cpp
@@ -399,6 +399,12 @@ extern "C" LLVMTargetMachineRef LLVMRustCreateTargetMachine(
     Options.ThreadModel = ThreadModel::Single;
   }
 
+  // See https://reviews.llvm.org/D52013
+  if (Trip.getArch() == llvm::Triple::ArchType::ppc64 &&
+      Trip.getEnvironment() == llvm::Triple::EnvironmentType::Musl) {
+    Options.MCOptions.ABIName = "elfv2";
+  }
+
 #if LLVM_VERSION_GE(6, 0)
   Optional<CodeModel::Model> CM;
 #else