From 17cf53519905acb69c567173bedd2df1c8e45523 Mon Sep 17 00:00:00 2001
From: Andrew Trick <atrick@apple.com>
Date: Wed, 5 Dec 2012 06:47:08 +0000
Subject: [PATCH] Added RegisterPressureTracker::dump() for debugging.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169359 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/RegisterPressure.h |  2 ++
 lib/CodeGen/RegisterPressure.cpp        | 21 ++++++++++++++++-----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/include/llvm/CodeGen/RegisterPressure.h b/include/llvm/CodeGen/RegisterPressure.h
index ead60e4a5a5..20312be3001 100644
--- a/include/llvm/CodeGen/RegisterPressure.h
+++ b/include/llvm/CodeGen/RegisterPressure.h
@@ -273,6 +273,8 @@ public:
     return getDownwardPressure(MI, PressureResult, MaxPressureResult);
   }
 
+  void dump(const TargetRegisterInfo *TRI) const;
+
 protected:
   void increasePhysRegPressure(ArrayRef<unsigned> Regs);
   void decreasePhysRegPressure(ArrayRef<unsigned> Regs);
diff --git a/lib/CodeGen/RegisterPressure.cpp b/lib/CodeGen/RegisterPressure.cpp
index 656d35acee1..777bc750295 100644
--- a/lib/CodeGen/RegisterPressure.cpp
+++ b/lib/CodeGen/RegisterPressure.cpp
@@ -64,7 +64,17 @@ void RegisterPressure::decrease(const TargetRegisterClass *RC,
 }
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+static void dumpSetPressure(const std::vector<unsigned> &SetPressure,
+                            const TargetRegisterInfo *TRI) {
+  for (unsigned i = 0, e = SetPressure.size(); i < e; ++i) {
+    if (SetPressure[i] != 0)
+      dbgs() << TRI->getRegPressureSetName(i) << "=" << SetPressure[i] << '\n';
+  }
+}
+
 void RegisterPressure::dump(const TargetRegisterInfo *TRI) const {
+  dbgs() << "Max Pressure: ";
+  dumpSetPressure(MaxSetPressure, TRI);
   dbgs() << "Live In: ";
   for (unsigned i = 0, e = LiveInRegs.size(); i < e; ++i)
     dbgs() << PrintReg(LiveInRegs[i], TRI) << " ";
@@ -73,11 +83,12 @@ void RegisterPressure::dump(const TargetRegisterInfo *TRI) const {
   for (unsigned i = 0, e = LiveOutRegs.size(); i < e; ++i)
     dbgs() << PrintReg(LiveOutRegs[i], TRI) << " ";
   dbgs() << '\n';
-  for (unsigned i = 0, e = MaxSetPressure.size(); i < e; ++i) {
-    if (MaxSetPressure[i] != 0)
-      dbgs() << TRI->getRegPressureSetName(i) << "=" << MaxSetPressure[i]
-             << '\n';
-  }
+}
+
+void RegPressureTracker::dump(const TargetRegisterInfo *TRI) const {
+  dbgs() << "Curr Pressure: ";
+  dumpSetPressure(CurrSetPressure, TRI);
+  P.dump(TRI);
 }
 #endif