[NFC][PowerPC] Add comment for PPCAsmPrinter::printOperand
Patch by Yi-Hong Lyu
llvm-svn: 355848
diff --git a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
index a8d4303..568ad3b 100644
--- a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -96,6 +96,9 @@
void EmitInstruction(const MachineInstr *MI) override;
+ /// This function is for PrintAsmOperand and PrintAsmMemoryOperand,
+ /// invoked by EmitMSInlineAsmStr and EmitGCCInlineAsmStr only.
+ /// The \p MI would be INLINEASM ONLY.
void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
@@ -164,8 +167,9 @@
switch (MO.getType()) {
case MachineOperand::MO_Register: {
- unsigned Reg = PPCInstrInfo::getRegNumForOperand(MI->getDesc(),
- MO.getReg(), OpNo);
+ // The MI is INLINEASM ONLY and UseVSXReg is always false.
+ unsigned Reg =
+ PPCInstrInfo::getRegNumForOperand(MI->getDesc(), MO.getReg(), OpNo);
const char *RegName = PPCInstPrinter::getRegisterName(Reg);