[CTU] Add DisplayCTUProgress analyzer switch

Summary:
With a new switch we may be able to print to stderr if a new TU is being loaded
during CTU.  This is very important for higher level scripts (like CodeChecker)
to be able to parse this output so they can create e.g. a zip file in case of
a Clang crash which contains all the related TU files.

Reviewers: xazax.hun, Szelethus, a_sidorin, george.karpenkov

Subscribers: whisperity, baloghadamsoftware, szepet, rnkovacs, a.sidorin, mikhail.ramalho, donat.nagy, dkrupp,

Differential Revision: https://reviews.llvm.org/D55135

llvm-svn: 348594

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/test/Analysis/ctu-main.cpp b/clang/test/Analysis/ctu-main.cpp
index fca750c317b..3bd5d24bd05 100644
--- a/clang/test/Analysis/ctu-main.cpp
+++ b/clang/test/Analysis/ctu-main.cpp
@@ -10,6 +10,14 @@
 // RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
 // RUN:   -analyzer-config ctu-dir=%t/ctudir \
 // RUN:   -verify %s
+// RUN: %clang_analyze_cc1 -triple x86_64-pc-linux-gnu \
+// RUN:   -analyzer-checker=core,debug.ExprInspection \
+// RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
+// RUN:   -analyzer-config ctu-dir=%t/ctudir \
+// RUN:   -analyzer-config display-ctu-progress=true 2>&1 %s | FileCheck %s
+
+// CHECK: CTU loaded AST file: {{.*}}/ctu-other.cpp
+// CHECK: CTU loaded AST file: {{.*}}/ctu-chain.cpp
 
 #include "ctu-hdr.h"