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InlineSpiller can also update LiveStacks.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117338 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-10-26 00:11:35 +00:00
parent 2d17293dd0
commit 0a12b801b5
1 changed files with 9 additions and 0 deletions
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9
lib/CodeGen/InlineSpiller.cpp
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@ -18,6 +18,7 @@
#include "SplitKit.h"
#include "VirtRegMap.h"
#include "llvm/CodeGen/LiveIntervalAnalysis.h"
#include "llvm/CodeGen/LiveStackAnalysis.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
@ -34,6 +35,7 @@ class InlineSpiller : public Spiller {
MachineFunctionPass &pass_;
MachineFunction &mf_;
LiveIntervals &lis_;
LiveStacks &lss_;
MachineLoopInfo &loops_;
VirtRegMap &vrm_;
MachineFrameInfo &mfi_;
@ -61,6 +63,7 @@ public:
: pass_(pass),
mf_(mf),
lis_(pass.getAnalysis<LiveIntervals>()),
lss_(pass.getAnalysis<LiveStacks>()),
loops_(pass.getAnalysis<MachineLoopInfo>()),
vrm_(vrm),
mfi_(*mf.getFrameInfo()),
@ -355,6 +358,12 @@ void InlineSpiller::spill(LiveRangeEdit &edit) {
rc_ = mri_.getRegClass(edit.getReg());
stackSlot_ = edit.assignStackSlot(vrm_);
// Update LiveStacks now that we are committed to spilling.
LiveInterval &stacklvr = lss_.getOrCreateInterval(stackSlot_, rc_);
if (!stacklvr.hasAtLeastOneValue())
stacklvr.getNextValue(SlotIndex(), 0, lss_.getVNInfoAllocator());
stacklvr.MergeRangesInAsValue(edit_->getParent(), stacklvr.getValNumInfo(0));
// Iterate over instructions using register.
for (MachineRegisterInfo::reg_iterator RI = mri_.reg_begin(edit.getReg());
MachineInstr *MI = RI.skipInstruction();) {