llvm/0001-LegalizeDAG-Allow-type-promotion-for-scalar-stores.patch

From af4d115e2c9c4cfd8b099aaef9a13c2972c36272 Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Thu, 6 Dec 2012 18:05:30 +0000
Subject: [PATCH] LegalizeDAG: Allow type promotion for scalar stores

---
 lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index abf40b7..9946694 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -731,9 +731,10 @@ void SelectionDAGLegalize::LegalizeStoreOps(SDNode *Node) {
           return;
         }
         case TargetLowering::Promote: {
-          assert(VT.isVector() && "Unknown legal promote case!");
-          Value = DAG.getNode(ISD::BITCAST, dl,
-                             TLI.getTypeToPromoteTo(ISD::STORE, VT), Value);
+          EVT NVT = TLI.getTypeToPromoteTo(ISD::STORE, VT);
+          assert(NVT.getSizeInBits() == VT.getSizeInBits() &&
+                 "Can only promote stores to same size type");
+          Value = DAG.getNode(ISD::BITCAST, dl, NVT, Value);
           SDValue Result =
             DAG.getStore(Chain, dl, Value, Ptr,
                          ST->getPointerInfo(), isVolatile,
-- 
1.7.11.4