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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.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52639 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-06-23 21:03:19 +00:00
parent 300c6c5167
commit 99ec779a93
3 changed files with 12 additions and 9 deletions
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5
lib/CodeGen/StackSlotColoring.cpp
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@@ -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 @@ int StackSlotColoring::ColorSlot(LiveInterval *li) {
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) {