diff options
| author | Owen Anderson <resistor@mac.com> | 2009-06-12 21:41:29 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2009-06-12 21:41:29 +0000 |
| commit | fdf72c660774538cb29adb2b6a1bd66e766c2b53 (patch) | |
| tree | 0f299dd25921e5bc41b4ae03699d79cf6b070944 /lib/CodeGen | |
| parent | 4a274e573dbbd4a6085de0d3c738c801b9d000c5 (diff) | |
Now with less iterator invalidation, and other forms of crashing!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73256 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/LazyLiveness.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/CodeGen/LazyLiveness.cpp b/lib/CodeGen/LazyLiveness.cpp index 3ccccd5f5c..85817da2e4 100644 --- a/lib/CodeGen/LazyLiveness.cpp +++ b/lib/CodeGen/LazyLiveness.cpp @@ -22,6 +22,7 @@ using namespace llvm; char LazyLiveness::ID = 0; +static RegisterPass<LazyLiveness> X("lazy-liveness", "Lazy Liveness Analysis"); void LazyLiveness::computeBackedgeChain(MachineFunction& mf, MachineBasicBlock* MBB) { @@ -65,7 +66,7 @@ bool LazyLiveness::runOnMachineFunction(MachineFunction &mf) { // Step 0: Compute preorder numbering for all MBBs. unsigned num = 0; for (df_iterator<MachineBasicBlock*> DI = df_begin(&*mf.begin()); - DI != df_end(&*mf.end()); ++DI) { + DI != df_end(&*mf.begin()); ++DI) { preorder[*DI] = num++; rev_preorder.push_back(*DI); } @@ -103,8 +104,10 @@ bool LazyLiveness::runOnMachineFunction(MachineFunction &mf) { if (!backedge_target.test(preorder[*POI])) for (MachineBasicBlock::succ_iterator SI = (*POI)->succ_begin(); SI != (*POI)->succ_end(); ++SI) - if (!backedges.count(std::make_pair(*POI, *SI)) && tv.count(*SI)) - tv[*POI]= tv[*SI]; + if (!backedges.count(std::make_pair(*POI, *SI)) && tv.count(*SI)) { + SparseBitVector<128>& PBV = tv[*POI]; + PBV = tv[*SI]; + } for (po_iterator<MachineBasicBlock*> POI = po_begin(&*mf.begin()), POE = po_end(&*mf.begin()); POI != POE; ++POI) |