Handle 'a' modifier in X86 asms. PR 4742.

llvm-svn: 79484

1 files changed, 12 insertions, 0 deletions

diff --git a/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp b/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
index 1e2a6de572a..c37ae9919ce 100644
--- a/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
+++ b/llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
@@ -620,6 +620,18 @@ bool X86ATTAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
     
     switch (ExtraCode[0]) {
     default: return true;  // Unknown modifier.
+    case 'a': // This is an address.  Currently only 'i' and 'r' are expected.
+      if (MO.isImm()) {
+        O << MO.getImm();
+        return false;
+      } else if (MO.isReg()) {
+        O << '(';
+        printOperand(MI, OpNo);
+        O << ')';
+        return false;
+      }
+      return true;
+
     case 'c': // Don't print "$" before a global var name or constant.
       if (MO.isImm())
         O << MO.getImm();