[AsmPrinter] defer %c to base class for ARM, PPC, and Hexagon. NFC

Summary:
None of these derived classes do anything that the base class cannot.
If we remove these case statements, then the base class can handle them
just fine.

Reviewers: peter.smith, echristo

Reviewed By: echristo

Subscribers: nemanjai, javed.absar, eraman, kristof.beyls, hiraditya, kbarton, jsji, llvm-commits, srhines

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60803

llvm-svn: 358603
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
index 67dbc5a..b18bd2c 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
@@ -425,6 +425,8 @@
           unsigned OpFlags = MI->getOperand(OpNo).getImm();
           ++OpNo;  // Skip over the ID number.
 
+          // FIXME: Shouldn't arch-independant output template handling go into
+          // PrintAsmOperand?
           if (Modifier[0] == 'l') { // Labels are target independent.
             if (MI->getOperand(OpNo).isBlockAddress()) {
               const BlockAddress *BA = MI->getOperand(OpNo).getBlockAddress();
@@ -606,6 +608,7 @@
   if (ExtraCode && ExtraCode[0]) {
     if (ExtraCode[1] != 0) return true; // Unknown modifier.
 
+    // https://gcc.gnu.org/onlinedocs/gccint/Output-Template.html
     const MachineOperand &MO = MI->getOperand(OpNo);
     switch (ExtraCode[0]) {
     default: