Fix a broken doxygen comment, and reword it for clarity.
llvm-svn: 50687
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 1275909..135718a 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -553,8 +553,9 @@
}
/// findRegisterDefOperandIdx() - Returns the operand index that is a def of
-/// the specific register or -1 if it is not found. It further tightening
- /// the search criteria to a def that is dead the register if isDead is true.
+/// the specified register or -1 if it is not found. If isDead is true, defs
+/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it
+/// also checks if there is a def of a super-register.
int MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead,
const TargetRegisterInfo *TRI) const {
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {