Add -silence-passes option to bugpoint. This option suppresses output generated
when bugpoint is running passes in a child process.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52234 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/OptimizerDriver.cpp b/tools/bugpoint/OptimizerDriver.cpp
index b08171b..3ded5e8 100644
--- a/tools/bugpoint/OptimizerDriver.cpp
+++ b/tools/bugpoint/OptimizerDriver.cpp
@@ -114,6 +114,8 @@
return 0;
}
+cl::opt<bool> SilencePasses("silence-passes", cl::desc("Suppress output of running passes (both stdout and stderr)"));
+
/// runPasses - Run the specified passes on Program, outputting a bitcode file
/// and writing the filename into OutputFile if successful. If the
/// optimizations fail for some reason (optimizer crashes), return true,
@@ -192,7 +194,12 @@
prog = sys::Program::FindProgramByName("valgrind");
else
prog = tool;
- int result = sys::Program::ExecuteAndWait(prog, args, 0, 0,
+
+ // Redirect stdout and stderr to nowhere if SilencePasses is given
+ sys::Path Nowhere;
+ const sys::Path *Redirects[3] = {0, &Nowhere, &Nowhere};
+
+ int result = sys::Program::ExecuteAndWait(prog, args, 0, (SilencePasses ? Redirects : 0),
Timeout, MemoryLimit, &ErrMsg);
// If we are supposed to delete the bitcode file or if the passes crashed,