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| author | Evan Cheng <evan.cheng@apple.com> | 2008-02-27 19:57:11 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-02-27 19:57:11 +0000 |
| commit | fdc732ab9aeff38bf697c8bf31f410ee8c482dd9 (patch) | |
| tree | 81d3437700b616bc38bb6aeb218e7933a324fafa /llvm/lib/CodeGen/VirtRegMap.cpp | |
| parent | e5e32ec8f78faef271be681a7f26bf4c923c3428 (diff) | |
| download | bcm5719-llvm-fdc732ab9aeff38bf697c8bf31f410ee8c482dd9.tar.gz bcm5719-llvm-fdc732ab9aeff38bf697c8bf31f410ee8c482dd9.zip | |
Fix a bug in dead spill slot elimination.
llvm-svn: 47687
Diffstat (limited to 'llvm/lib/CodeGen/VirtRegMap.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/VirtRegMap.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/VirtRegMap.cpp b/llvm/lib/CodeGen/VirtRegMap.cpp index d210d93835d..6cfbee9b7b7 100644 --- a/llvm/lib/CodeGen/VirtRegMap.cpp +++ b/llvm/lib/CodeGen/VirtRegMap.cpp @@ -914,6 +914,7 @@ bool LocalSpiller::PrepForUnfoldOpti(MachineBasicBlock &MBB, Ops.push_back(Idx); MachineInstr *FoldedMI = TII->foldMemoryOperand(MF, NewMI, Ops, SS); if (FoldedMI) { + VRM.addSpillSlotUse(SS, FoldedMI); if (!VRM.hasPhys(UnfoldVR)) VRM.assignVirt2Phys(UnfoldVR, UnfoldPR); VRM.virtFolded(VirtReg, FoldedMI, VirtRegMap::isRef); @@ -1414,6 +1415,7 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) { MBB.insert(MII, NewMIs[0]); NewStore = NewMIs[1]; MBB.insert(MII, NewStore); + VRM.addSpillSlotUse(SS, NewStore); VRM.RemoveMachineInstrFromMaps(&MI); MBB.erase(&MI); Erased = true; |
