[Driver] Add method to redirect output of Compilation.

Summary:
Currently output of child process, however in my use case, it
needs to be captured and presented to the user.

Add Redirect method to Compilation and use existing infrastructure
for redirecting output of commands.

Reviewers: tstellarAMD

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D21224

llvm-svn: 273997

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/Driver/Compilation.cpp b/clang/lib/Driver/Compilation.cpp
index 46548e638a3..6a2616f0c2a 100644
--- a/clang/lib/Driver/Compilation.cpp
+++ b/clang/lib/Driver/Compilation.cpp
@@ -45,6 +45,7 @@ Compilation::~Compilation() {
 
   // Free redirections of stdout/stderr.
   if (Redirects) {
+    delete Redirects[0];
     delete Redirects[1];
     delete Redirects[2];
     delete [] Redirects;
@@ -213,3 +214,7 @@ void Compilation::initCompilationForDiagnostics() {
 StringRef Compilation::getSysRoot() const {
   return getDriver().SysRoot;
 }
+
+void Compilation::Redirect(const StringRef** Redirects) {
+  this->Redirects = Redirects;
+}