diff options
| -rw-r--r-- | llvm/lib/CodeGen/LazyLiveness.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/LazyLiveness.cpp b/llvm/lib/CodeGen/LazyLiveness.cpp index 85817da2e4f..4b2d737e6d3 100644 --- a/llvm/lib/CodeGen/LazyLiveness.cpp +++ b/llvm/lib/CodeGen/LazyLiveness.cpp @@ -62,13 +62,14 @@ bool LazyLiveness::runOnMachineFunction(MachineFunction &mf) { preorder.clear(); MRI = &mf.getRegInfo(); + MachineDominatorTree& MDT = getAnalysis<MachineDominatorTree>(); // Step 0: Compute preorder numbering for all MBBs. unsigned num = 0; - for (df_iterator<MachineBasicBlock*> DI = df_begin(&*mf.begin()); - DI != df_end(&*mf.begin()); ++DI) { - preorder[*DI] = num++; - rev_preorder.push_back(*DI); + for (df_iterator<MachineDomTreeNode*> DI = df_begin(MDT.getRootNode()); + DI != df_end(MDT.getRootNode()); ++DI) { + preorder[(*DI)->getBlock()] = num++; + rev_preorder.push_back((*DI)->getBlock()); } // Step 1: Compute the transitive closure of the CFG, ignoring backedges. |
