1 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 80728da..a03fd50 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -4331,6 +4331,15 @@ void Driver::handleArguments(Compilation &C, DerivedArgList &Args,
     YcArg = YuArg = nullptr;
   }
 
+  if (Args.hasArg(options::OPT_include_pch) &&
+      (FinalPhase == phases::Preprocess ||
+       Args.hasArg(options::OPT_ignore_pch))) {
+    // If only preprocessing or -ignore-pch is used, -include-pch is disabled.
+    // Since -emit-pch is CC1option, it will not be added to command argments if
+    // -ignore-pch is used.
+    Args.eraseArg(options::OPT_include_pch);
+  }
+
   bool LinkOnly = phases::Link == FinalPhase && Inputs.size() > 0;
   for (auto &I : Inputs) {
     types::ID InputType = I.first;