diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-09-15 18:22:52 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-09-15 18:22:52 +0000 |
| commit | d205f7a940dd38480ff6283328c7d429201cdf27 (patch) | |
| tree | eb4e73ea98564d523f8c2fae5ea01f2b771f0fc2 /lib | |
| parent | 1b69a128d6b98456c666b4031cc46c3d0fbe6177 (diff) | |
Count correctly when a COPY turns into a spill or reload.
The number of spills could go negative since a folded COPY is just a
spill, and it may be eliminated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139815 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/InlineSpiller.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp index 5078f3a4bd0..169a867aa7a 100644 --- a/lib/CodeGen/InlineSpiller.cpp +++ b/lib/CodeGen/InlineSpiller.cpp @@ -1002,6 +1002,7 @@ bool InlineSpiller::coalesceStackAccess(MachineInstr *MI, unsigned Reg) { bool InlineSpiller::foldMemoryOperand(MachineBasicBlock::iterator MI, const SmallVectorImpl<unsigned> &Ops, MachineInstr *LoadMI) { + bool WasCopy = MI->isCopy(); // TargetInstrInfo::foldMemoryOperand only expects explicit, non-tied // operands. SmallVector<unsigned, 8> FoldOps; @@ -1031,7 +1032,12 @@ bool InlineSpiller::foldMemoryOperand(MachineBasicBlock::iterator MI, VRM.addSpillSlotUse(StackSlot, FoldMI); MI->eraseFromParent(); DEBUG(dbgs() << "\tfolded: " << *FoldMI); - ++NumFolded; + if (!WasCopy) + ++NumFolded; + else if (Ops.front() == 0) + ++NumSpills; + else + ++NumReloads; return true; } |