From c283fc5ebb8989e128d3e2b7e29affd7d6c27b96 Mon Sep 17 00:00:00 2001
From: Lang Hames <lhames@gmail.com>
Date: Sat, 20 Apr 2019 18:50:13 +0000
Subject: [PATCH] [JITLink] Add more detail to MachO/x86-64 "unsupported
 relocation" errors.

The extra information here will be helpful in diagnosing errors, like the
ones currently occuring on the PPC big-endian bots. :)

llvm-svn: 358826
---
 llvm/lib/ExecutionEngine/JITLink/JITLink_MachO_x86_64.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/ExecutionEngine/JITLink/JITLink_MachO_x86_64.cpp b/llvm/lib/ExecutionEngine/JITLink/JITLink_MachO_x86_64.cpp
index 0e1dd236dc8e..6ee633baca4c 100644
--- a/llvm/lib/ExecutionEngine/JITLink/JITLink_MachO_x86_64.cpp
+++ b/llvm/lib/ExecutionEngine/JITLink/JITLink_MachO_x86_64.cpp
@@ -87,7 +87,11 @@ private:
       break;
     }
 
-    return make_error<JITLinkError>("Unsupported x86-64 relocation kind");
+    return make_error<JITLinkError>(
+        "Unsupported x86-64 relocation: kind=" + formatv("{0:x1}", RI.r_type) +
+        ", pc_rel=" + (RI.r_pcrel ? "true" : "false") +
+        ", extern= " + (RI.r_extern ? "true" : "false") +
+        ", length=" + formatv("{0:u}", RI.r_length));
   }
 
   Expected<Atom &> findAtomBySymbolIndex(const MachO::relocation_info &RI) {