From 0692fabb4e681da2907361346ff984290dbb3e40 Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Thu, 16 Jul 2009 13:35:48 +0000
Subject: [PATCH] Propagate return result extension type

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75925 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index 4b2ee0e854f..b1589d4c096 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -981,6 +981,13 @@ void SelectionDAGLowering::visitRet(ReturnInst &I) {
       ISD::ArgFlagsTy Flags = ISD::ArgFlagsTy();
       if (F->paramHasAttr(0, Attribute::InReg))
         Flags.setInReg();
+
+      // Propagate extension type if any
+      if (F->paramHasAttr(0, Attribute::SExt))
+        Flags.setSExt();
+      else if (F->paramHasAttr(0, Attribute::ZExt))
+        Flags.setZExt();
+
       for (unsigned i = 0; i < NumParts; ++i) {
         NewValues.push_back(Parts[i]);
         NewValues.push_back(DAG.getArgFlags(Flags));
-- 
2.34.1