From 74321abb4f7e32e29c0e391b3ebb196c7da86525 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 10 Sep 2008 21:01:31 +0000
Subject: [PATCH] FastISel support for i1 PHI nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56069 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index 57b6768528f..d02dffa694c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -5612,8 +5612,13 @@ SelectionDAGISel::HandlePHINodesInSuccessorBlocksFast(BasicBlock *LLVMBB,
       // exactly one register for each non-void instruction.
       MVT VT = TLI.getValueType(PN->getType(), /*AllowUnknown=*/true);
       if (VT == MVT::Other || !TLI.isTypeLegal(VT)) {
-        SDL->PHINodesToUpdate.resize(OrigNumPHINodesToUpdate);
-        return false;
+        // Promote MVT::i1.
+        if (VT == MVT::i1)
+          VT = TLI.getTypeToTransformTo(VT);
+        else {
+          SDL->PHINodesToUpdate.resize(OrigNumPHINodesToUpdate);
+          return false;
+        }
       }
 
       Value *PHIOp = PN->getIncomingValueForBlock(LLVMBB);