AddressSanitizer: Add use-after-scope to pass options (#130924)

Author: guy-david

llvm/lib/Passes/PassBuilder.cpp

@@ -790,6 +790,8 @@ Expected<AddressSanitizerOptions> parseASanPassOptions(StringRef Params) {
 
     if (ParamName == "kernel") {
       Result.CompileKernel = true;
+    } else if (ParamName == "use-after-scope") {
+      Result.UseAfterScope = true;
     } else {
       return make_error<StringError>(
           formatv("invalid AddressSanitizer pass parameter '{0}' ", ParamName)

llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp

@@ -1244,7 +1244,9 @@ void AddressSanitizerPass::printPipeline(
       OS, MapClassName2PassName);
   OS << '<';
   if (Options.CompileKernel)
-    OS << "kernel";
+    OS << "kernel;";
+  if (Options.UseAfterScope)
+    OS << "use-after-scope";
   OS << '>';
 }
 

llvm/test/Other/new-pm-print-pipeline.ll

@@ -120,3 +120,6 @@
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='speculative-execution<only-if-divergent-target>' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-36
 ; CHECK-36: function(speculative-execution<only-if-divergent-target>)
+
+; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='module(asan<>,asan<kernel;use-after-scope>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-37
+; CHECK-37: asan<>,asan<kernel;use-after-scope>