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-rw-r--r--llvm/lib/CodeGen/MachineFunction.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index 7f6a752..6179925 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -654,6 +654,11 @@ void MachineFunction::print(raw_ostream &OS, const SlotIndexes *Indexes) const {
/// True if this function needs frame moves for debug or exceptions.
bool MachineFunction::needsFrameMoves() const {
+ // TODO: Ideally, what we'd like is to have a switch that allows emitting
+ // synchronous (precise at call-sites only) CFA into .eh_frame. However, even
+ // under this switch, we'd like .debug_frame to be precise when using -g. At
+ // this moment, there's no way to specify that some CFI directives go into
+ // .eh_frame only, while others go into .debug_frame only.
return getMMI().hasDebugInfo() ||
getTarget().Options.ForceDwarfFrameSection ||
F.needsUnwindTableEntry();