lib/CodeGen/CFIInstrInserter.cpp

1 //===------ CFIInstrInserter.cpp - Insert additional CFI instructions -----===//
10 /// blocks. CFA information is information about offset and register set by CFI
14 /// set and inserts additional CFI instruction at their beginnings if they
15 /// don't. CFI instructions are inserted if basic blocks have incorrect offset
61                            " in/out CFI information errors.");
92   /// checking the block for CFI instructions. Block's incoming CFA info remains
100   /// information of the previous block. If it doesn't, insert CFI instruction
105   /// if needed. The negated value is needed when creating CFI instructions that
122                 "Check CFA info and insert CFI instructions if needed", false,
169       const MCCFIInstruction &CFI = Instrs[CFIIndex];
170       switch (CFI.getOperation()) {
172         SetRegister = CFI.getRegister();
175         SetOffset = CFI.getOffset();
178         SetOffset += CFI.getOffset();
181         SetRegister = CFI.getRegister();
182         SetOffset = CFI.getOffset();
200       // Other CFI directives do not affect CFA value.