AMDGPU: Add convergent flag to INLINEASM instruction.

Differential Revision: http://reviews.llvm.org/D21214

llvm-svn: 273455
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 4789538..0b55d2e 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1754,6 +1754,8 @@
       OS << " [mayload]";
     if (ExtraInfo & InlineAsm::Extra_MayStore)
       OS << " [maystore]";
+    if (ExtraInfo & InlineAsm::Extra_IsConvergent)
+      OS << " [isconvergent]";
     if (ExtraInfo & InlineAsm::Extra_IsAlignStack)
       OS << " [alignstack]";
     if (getInlineAsmDialect() == InlineAsm::AD_ATT)