From 8d0851f509bfd63180ba2d96c9028cb54b30c595 Mon Sep 17 00:00:00 2001
From: Igor Laevsky <igmyrj@gmail.com>
Date: Thu, 5 Mar 2015 15:41:14 +0000
Subject: Revert change r231366 as it broke clang-native-arm-cortex-a9
 Analysis/properties.m test.

llvm-svn: 231374
---
 .../CodeGen/SelectionDAG/SelectionDAGBuilder.cpp   | 39 ++++++----------------
 1 file changed, 10 insertions(+), 29 deletions(-)

(limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 61631f04df8..097b618252e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1016,24 +1016,6 @@ void SelectionDAGBuilder::resolveDanglingDebugInfo(const Value *V,
   }
 }
 
-/// getCopyFromRegs - If there was virtual register allocated for the value V
-/// emit CopyFromReg of the specified type Ty. Return empty SDValue() otherwise.
-SDValue SelectionDAGBuilder::getCopyFromRegs(const Value *V, Type *Ty) {
-  DenseMap<const Value *, unsigned>::iterator It = FuncInfo.ValueMap.find(V);
-  SDValue res;
-
-  if (It != FuncInfo.ValueMap.end()) {
-    unsigned InReg = It->second;
-    RegsForValue RFV(*DAG.getContext(), DAG.getTargetLoweringInfo(), InReg,
-                     Ty);
-    SDValue Chain = DAG.getEntryNode();
-    res = RFV.getCopyFromRegs(DAG, FuncInfo, getCurSDLoc(), Chain, nullptr, V);
-    resolveDanglingDebugInfo(V, res);
-  }
-
-  return res;
-}
-
 /// getValue - Return an SDValue for the given Value.
 SDValue SelectionDAGBuilder::getValue(const Value *V) {
   // If we already have an SDValue for this value, use it. It's important
@@ -1044,9 +1026,15 @@ SDValue SelectionDAGBuilder::getValue(const Value *V) {
 
   // If there's a virtual register allocated and initialized for this
   // value, use it.
-  SDValue copyFromReg = getCopyFromRegs(V, V->getType());
-  if (copyFromReg.getNode()) {
-    return copyFromReg;
+  DenseMap<const Value *, unsigned>::iterator It = FuncInfo.ValueMap.find(V);
+  if (It != FuncInfo.ValueMap.end()) {
+    unsigned InReg = It->second;
+    RegsForValue RFV(*DAG.getContext(), DAG.getTargetLoweringInfo(), InReg,
+                     V->getType());
+    SDValue Chain = DAG.getEntryNode();
+    N = RFV.getCopyFromRegs(DAG, FuncInfo, getCurSDLoc(), Chain, nullptr, V);
+    resolveDanglingDebugInfo(V, N);
+    return N;
   }
 
   // Otherwise create a new SDValue and remember it.
@@ -2039,20 +2027,13 @@ void SelectionDAGBuilder::visitInvoke(const InvokeInst &I) {
     case Intrinsic::experimental_patchpoint_i64:
       visitPatchpoint(&I, LandingPad);
       break;
-    case Intrinsic::experimental_gc_statepoint:
-      LowerStatepoint(ImmutableStatepoint(&I), LandingPad);
-      break;
     }
   } else
     LowerCallTo(&I, getValue(Callee), false, LandingPad);
 
   // If the value of the invoke is used outside of its defining block, make it
   // available as a virtual register.
-  // We already took care of the exported value for the statepoint instruction
-  // during call to the LowerStatepoint.
-  if (!isStatepoint(I)) {
-    CopyToExportRegsIfNeeded(&I);
-  }
+  CopyToExportRegsIfNeeded(&I);
 
   // Update successor info
   addSuccessorWithWeight(InvokeMBB, Return);
-- 
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