0046-LegalizeDAG-promote-PREFETCH-operands-to-native-inte.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Alex Bradbury <asb@lowrisc.org>
Subject: [LegalizeDAG] promote PREFETCH operands to native integer width

---
 lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp | 14 ++++++++++++++
 lib/CodeGen/SelectionDAG/LegalizeTypes.h          |  1 +
 2 files changed, 15 insertions(+)

diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 0aa1b58cbf8..c90842db604 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -958,6 +958,9 @@ bool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) {
 
   case ISD::FRAMEADDR:
   case ISD::RETURNADDR: Res = PromoteIntOp_RETURNADDR(N, OpNo); break;
+  case ISD::PREFETCH:
+    Res = PromoteIntOp_PREFETCH(N, OpNo);
+    break;
   }
 
   // If the result is null, the sub-method took care of registering results etc.
@@ -1346,6 +1349,17 @@ SDValue DAGTypeLegalizer::PromoteIntOp_RETURNADDR(SDNode *N, unsigned OpNo) {
   return SDValue(DAG.UpdateNodeOperands(N, Op), 0);
 }
 
+SDValue DAGTypeLegalizer::PromoteIntOp_PREFETCH(SDNode *N, unsigned OpNo) {
+  // Promote the rw, locality, and cache type arguments to a supported integer
+  // width.
+  SDValue Op2 = GetPromotedInteger(N->getOperand(2));
+  SDValue Op3 = GetPromotedInteger(N->getOperand(3));
+  SDValue Op4 = GetPromotedInteger(N->getOperand(4));
+  return SDValue(DAG.UpdateNodeOperands(N, N->getOperand(0), N->getOperand(1),
+                                        Op2, Op3, Op4),
+                 0);
+}
+
 //===----------------------------------------------------------------------===//
 //  Integer Result Expansion
 //===----------------------------------------------------------------------===//
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index fca50dc6f53..5c2a5c4dddb 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -311,6 +311,7 @@ private:
   SDValue PromoteIntOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo);
   SDValue PromoteIntOp_ADDSUBCARRY(SDNode *N, unsigned OpNo);
   SDValue PromoteIntOp_RETURNADDR(SDNode *N, unsigned OpNo);
+  SDValue PromoteIntOp_PREFETCH(SDNode *N, unsigned OpNo);
 
   void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code);
 
-- 
2.16.2