[GeneratePCHAction] If preprocessor option 'AllowPCHWithCompilerErrors' is enabled, don't delete the produced PCH file if error diagnostics occurred.

llvm-svn: 296320

1 files changed, 7 insertions, 1 deletions

diff --git a/clang/lib/Frontend/FrontendActions.cpp b/clang/lib/Frontend/FrontendActions.cpp
index c475cf4..bb4f530 100644
--- a/clang/lib/Frontend/FrontendActions.cpp
+++ b/clang/lib/Frontend/FrontendActions.cpp
@@ -93,7 +93,7 @@ GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
   Consumers.push_back(llvm::make_unique<PCHGenerator>(
                         CI.getPreprocessor(), OutputFile, Sysroot,
                         Buffer, CI.getFrontendOpts().ModuleFileExtensions,
-                        /*AllowASTWithErrors*/false,
+      /*AllowASTWithErrors*/CI.getPreprocessorOpts().AllowPCHWithCompilerErrors,
                         /*IncludeTimestamps*/
                           +CI.getFrontendOpts().IncludeTimestamps));
   Consumers.push_back(CI.getPCHContainerWriter().CreatePCHContainerGenerator(
@@ -127,6 +127,12 @@ GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
   return OS;
 }
 
+bool GeneratePCHAction::shouldEraseOutputFiles() {
+  if (getCompilerInstance().getPreprocessorOpts().AllowPCHWithCompilerErrors)
+    return false;
+  return ASTFrontendAction::shouldEraseOutputFiles();
+}
+
 bool GeneratePCHAction::BeginSourceFileAction(CompilerInstance &CI,
                                               StringRef Filename) {
   CI.getLangOpts().CompilingPCH = true;