Index: lib/IR/LLVMContextImpl.cpp
===================================================================
--- lib/IR/LLVMContextImpl.cpp
+++ lib/IR/LLVMContextImpl.cpp
@@ -73,22 +73,12 @@
 /// LLVMContext::emitOptimizationRemark.
 static Regex *OptimizationRemarkPattern = nullptr;
 
-/// \brief String to hold all the values passed via -pass-remarks. Every
-/// instance of -pass-remarks on the command line will be concatenated
-/// to this string. Values are stored inside braces and concatenated with
-/// the '|' operator. This implements the expected semantics that multiple
-/// -pass-remarks are additive.
-static std::string OptimizationRemarkExpr;
-
 struct PassRemarksOpt {
   void operator=(const std::string &Val) const {
     // Create a regexp object to match pass names for emitOptimizationRemark.
     if (!Val.empty()) {
-      if (!OptimizationRemarkExpr.empty())
-        OptimizationRemarkExpr += "|";
-      OptimizationRemarkExpr += "(" + Val + ")";
       delete OptimizationRemarkPattern;
-      OptimizationRemarkPattern = new Regex(OptimizationRemarkExpr);
+      OptimizationRemarkPattern = new Regex(Val);
       std::string RegexError;
       if (!OptimizationRemarkPattern->isValid(RegexError))
         report_fatal_error("Invalid regular expression '" + Val +