From 55c879f90ce7d41e6ab345b9ed75b414f3a57e4e Mon Sep 17 00:00:00 2001
From: Dylan McKay <dylanmckay34@gmail.com>
Date: Sun, 5 Feb 2017 10:42:49 +0000
Subject: [PATCH] [AVR] Fix a bug where asm operands are printed twice

We would unconditionally call printOperand, even if PrintAsmOperand
already printed the immediate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294121 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/AVR/AVRAsmPrinter.cpp           | 3 ++-
 test/CodeGen/AVR/no-print-operand-twice.ll | 8 ++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 test/CodeGen/AVR/no-print-operand-twice.ll

diff --git a/lib/Target/AVR/AVRAsmPrinter.cpp b/lib/Target/AVR/AVRAsmPrinter.cpp
index 4afdd3a0ec0..50bb50b44f2 100644
--- a/lib/Target/AVR/AVRAsmPrinter.cpp
+++ b/lib/Target/AVR/AVRAsmPrinter.cpp
@@ -130,7 +130,8 @@ bool AVRAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
     }
   }
 
-  printOperand(MI, OpNum, O);
+  if (Error)
+    printOperand(MI, OpNum, O);
 
   return false;
 }
diff --git a/test/CodeGen/AVR/no-print-operand-twice.ll b/test/CodeGen/AVR/no-print-operand-twice.ll
new file mode 100644
index 00000000000..8326507768b
--- /dev/null
+++ b/test/CodeGen/AVR/no-print-operand-twice.ll
@@ -0,0 +1,8 @@
+; RUN: llc -no-integrated-as -march=avr < %s | FileCheck %s
+
+define void @test() {
+entry:
+; CHECK: /* result: 68719476738 */
+  tail call void asm sideeffect "/* result: ${0:c} */", "i,~{dirflag},~{fpsr},~{flags}"( i64 68719476738 )
+  ret void
+}
-- 
2.50.1