[llvm-objcopy] Implement IHEX writer

Differential revision: https://reviews.llvm.org/D60270

llvm-svn: 361949
diff --git a/llvm/tools/llvm-objcopy/CopyConfig.cpp b/llvm/tools/llvm-objcopy/CopyConfig.cpp
index 0b0023f..b138544 100644
--- a/llvm/tools/llvm-objcopy/CopyConfig.cpp
+++ b/llvm/tools/llvm-objcopy/CopyConfig.cpp
@@ -458,7 +458,8 @@
       return MI.takeError();
     Config.BinaryArch = *MI;
   }
-  if (!Config.OutputFormat.empty() && Config.OutputFormat != "binary") {
+  if (!Config.OutputFormat.empty() && Config.OutputFormat != "binary" &&
+      Config.OutputFormat != "ihex") {
     Expected<MachineInfo> MI = getOutputFormatMachineInfo(Config.OutputFormat);
     if (!MI)
       return MI.takeError();