From d0428da39869eeca2c8bd49ef493cfdb2ede6542 Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Fri, 12 Jun 2009 21:41:29 +0000 Subject: [PATCH] Now with less iterator invalidation, and other forms of crashing! llvm-svn: 73256 --- llvm/lib/CodeGen/LazyLiveness.cpp | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/llvm/lib/CodeGen/LazyLiveness.cpp b/llvm/lib/CodeGen/LazyLiveness.cpp index 3ccccd5f5cc6..85817da2e4f2 100644 --- a/llvm/lib/CodeGen/LazyLiveness.cpp +++ b/llvm/lib/CodeGen/LazyLiveness.cpp @@ -22,6 +22,7 @@ using namespace llvm; char LazyLiveness::ID = 0; +static RegisterPass 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 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 POI = po_begin(&*mf.begin()), POE = po_end(&*mf.begin()); POI != POE; ++POI)