Recommit r246175 - Add Kaleidoscope regression tests, with a fix to make sure

the kaleidoscope 'library' functions aren't dead-stripped in release builds.

llvm-svn: 246201

2 files changed, 6 insertions, 4 deletions

diff --git a/llvm/examples/Kaleidoscope/Chapter7/CMakeLists.txt b/llvm/examples/Kaleidoscope/Chapter7/CMakeLists.txt
index 27c18cdd065..e67d7928efe 100644
--- a/llvm/examples/Kaleidoscope/Chapter7/CMakeLists.txt
+++ b/llvm/examples/Kaleidoscope/Chapter7/CMakeLists.txt
@@ -13,3 +13,5 @@ set(LLVM_LINK_COMPONENTS
 add_kaleidoscope_chapter(Kaleidoscope-Ch7
   toy.cpp
   )
+
+export_executable_symbols(Kaleidoscope-Ch7)
diff --git a/llvm/examples/Kaleidoscope/Chapter7/toy.cpp b/llvm/examples/Kaleidoscope/Chapter7/toy.cpp
index 4558522952c..d61d880e540 100644
--- a/llvm/examples/Kaleidoscope/Chapter7/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Chapter7/toy.cpp
@@ -1189,14 +1189,14 @@ static void MainLoop() {
 //===----------------------------------------------------------------------===//
 
 /// putchard - putchar that takes a double and returns 0.
-extern "C" double putchard(double X) {
-  putchar((char)X);
+__attribute__((used)) extern "C" double putchard(double X) {
+  fputc((char)X, stderr);
   return 0;
 }
 
 /// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C" double printd(double X) {
-  printf("%f\n", X);
+__attribute__((used)) extern "C" double printd(double X) {
+  fprintf(stderr, "%f\n", X);
   return 0;
 }