commit 99ec779a93cf7a09ac336b63d2d67818960343a1
author Evan Cheng <evan.cheng@apple.com> Mon Jun 23 21:03:19 2008 +0000
committer Evan Cheng <evan.cheng@apple.com> Mon Jun 23 21:03:19 2008 +0000
tree 4907ac39f8d6716842d4c2b6fdab0ad1d9ef12b1
parent 300c6c5167d2869d1568d783d0e3e48bf4b03a6c

Instead of adding an isSS field to LiveInterval to denote stack slot. Use top bit of 'reg' instead. If the top bit is set, than the LiveInterval represents a stack slot live interval.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52639 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveInterval.cpp

diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index 24081b9..0f5de92 100644
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -678,8 +678,8 @@
 
 void LiveInterval::print(std::ostream &OS,
                          const TargetRegisterInfo *TRI) const {
-  if (isSS)
-    OS << "SS#" << reg;
+  if (isStackSlot())
+    OS << "SS#" << getStackSlotIndex();
   else if (TRI && TargetRegisterInfo::isPhysicalRegister(reg))
     OS << TRI->getName(reg);
   else

lib/CodeGen/StackSlotColoring.cpp

diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp
index 24bd028..b6a043c 100644
--- a/lib/CodeGen/StackSlotColoring.cpp
+++ b/lib/CodeGen/StackSlotColoring.cpp
@@ -1,4 +1,4 @@
-//===-- StackSlotColoring.cpp - Sinking for machine instructions ----------===//
+//===-- StackSlotColoring.cpp - Stack slot coloring pass. -----------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,9 +12,9 @@
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "stackcoloring"
+#include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/LiveStackAnalysis.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/Passes.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
@@ -201,7 +201,6 @@
 bool StackSlotColoring::ColorSlots(MachineFunction &MF) {
   unsigned NumObjs = MFI->getObjectIndexEnd();
   std::vector<int> SlotMapping(NumObjs, -1);
-  SlotMapping.resize(NumObjs, -1);
 
   bool Changed = false;
   for (unsigned i = 0, e = SSIntervals.size(); i != e; ++i) {