[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

ScheduleDAG.cpp updated: 1.2 -> 1.3
---
Log message:

add a new -view-sched-dags option to view dags as they are sent to the scheduler.


---
Diffs of the changes:  (+10 -0)

 ScheduleDAG.cpp |   10 ++++++++++
 1 files changed, 10 insertions(+)


Index: llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp:1.2 llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp:1.3
--- llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp:1.2	Thu Aug 18 15:07:59 2005
+++ llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp	Thu Aug 18 15:11:49 2005
@@ -17,8 +17,17 @@
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
+#ifndef _NDEBUG
+static cl::opt<bool>
+ViewDAGs("view-sched-dags", cl::Hidden,
+         cl::desc("Pop up a window to show sched dags as they are processed"));
+#else
+static const bool ViewDAGS = 0;
+#endif
+
 namespace {
   class SimpleSched {
     SelectionDAG &DAG;
@@ -112,5 +121,6 @@
 /// Pick a safe ordering and emit instructions for each target node in the
 /// graph.
 void SelectionDAGISel::ScheduleAndEmitDAG(SelectionDAG &SD) {
+  if (ViewDAGs) SD.viewGraph();
   SimpleSched(SD, BB).Run();  
 }