[LLVM-C] Expose the "Add Discriminators" Pass To LLVM-C

Summary: Add bindings to create a wrapped "Add Discriminators" pass.  Now that we have debug info support, this is a handy transform to have.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: dblaikie, aprantl, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58624

llvm-svn: 356272
diff --git a/llvm/include/llvm-c/Transforms/Utils.h b/llvm/include/llvm-c/Transforms/Utils.h
index ff28833..63594ab 100644
--- a/llvm/include/llvm-c/Transforms/Utils.h
+++ b/llvm/include/llvm-c/Transforms/Utils.h
@@ -38,6 +38,9 @@
 /** See llvm::createPromoteMemoryToRegisterPass function. */
 void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM);
 
+/** See llvm::createAddDiscriminatorsPass function. */
+void LLVMAddAddDiscriminatorsPass(LLVMPassManagerRef PM);
+
 /**
  * @}
  */