1 files changed, 17 insertions, 3 deletions
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp b/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
index 1844e44a47..58716b725b 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
@@ -409,9 +409,23 @@ void AsmPrinter::PrintSpecial(const MachineInstr *MI, raw_ostream &OS,
 /// instruction, using the specified assembler variant.  Targets should
 /// override this to format as appropriate.
 bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
-                                 unsigned AsmVariant, const char *ExtraCode,
-                                 raw_ostream &O) {
-  // Target doesn't support this yet!
+    unsigned AsmVariant, const char *ExtraCode,
+    raw_ostream &O) {
+  // Does this asm operand have a single letter operand modifier?
+  if (ExtraCode && ExtraCode[0]) {
+    if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+    const MachineOperand &MO = MI->getOperand(OpNo);
+    switch (ExtraCode[0]) {
+    default:
+      return true;  // Unknown modifier.
+    case 'c': // Substitute immediate value without immediate syntax
+      if ((MO.getType()) != MachineOperand::MO_Immediate)
+        return true;
+      O << MO.getImm();
+      return false;
+    }
+  }
   return true;
 }