Add a hidden command line option to display edge bundle graphs as they are
calculated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122912 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/EdgeBundles.cpp b/lib/CodeGen/EdgeBundles.cpp
index d7e73d1..aed8bc9 100644
--- a/lib/CodeGen/EdgeBundles.cpp
+++ b/lib/CodeGen/EdgeBundles.cpp
@@ -15,10 +15,15 @@
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/GraphWriter.h"
using namespace llvm;
+static cl::opt<bool>
+ViewEdgeBundles("view-edge-bundles", cl::Hidden,
+ cl::desc("Pop up a window to show edge bundle graphs"));
+
char EdgeBundles::ID = 0;
INITIALIZE_PASS(EdgeBundles, "edge-bundles", "Bundle Machine CFG Edges",
@@ -46,6 +51,8 @@
EC.join(OutE, 2 * (*SI)->getNumber());
}
EC.compress();
+ if (ViewEdgeBundles)
+ view();
return false;
}