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[CodeGen] Print predecessors as MIR comments in -debug output 

Make -debug MBB headers more copy-pastable into mir files.

llvm-svn: 324769
This commit is contained in:
Francis Visoiu Mistrih 2018-02-09 19:46:02 +00:00
parent fc58346bf0
commit 33979ce32d
1 changed files with 7 additions and 3 deletions
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10
llvm/lib/CodeGen/MachineBasicBlock.cpp
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@ -374,9 +374,13 @@ void MachineBasicBlock::print(raw_ostream &OS, ModuleSlotTracker &MST,
// Print the preds of this block according to the CFG.
if (!pred_empty()) {
if (Indexes) OS << '\t';
OS << " Predecessors according to CFG:";
for (const_pred_iterator PI = pred_begin(), E = pred_end(); PI != E; ++PI)
OS << " " << printMBBReference(*(*PI));
// Don't indent(2), align with previous line attributes.
OS << "; predecessors: ";
for (auto I = pred_begin(), E = pred_end(); I != E; ++I) {
if (I != pred_begin())
OS << ", ";
OS << printMBBReference(**I);
}
OS << '\n';
}