From 1f873003266fbdec7c2c48a965c60f4e2e35a158 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 28 Nov 2007 18:44:47 +0000
Subject: [PATCH] Implement ExpandOperationResult for ppc i64 fp->int, which
 fixes CodeGen/Generic/fp_to_int.ll among others.  Its unclear why this just
 started failing...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44407 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCISelLowering.cpp | 9 +++++++++
 lib/Target/PowerPC/PPCISelLowering.h   | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 4d577adfc6e..cf6ce8a1a04 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2076,6 +2076,7 @@ static SDOperand LowerSELECT_CC(SDOperand Op, SelectionDAG &DAG) {
   return SDOperand();
 }
 
+// FIXME: Split this code up when LegalizeDAGTypes lands.
 static SDOperand LowerFP_TO_SINT(SDOperand Op, SelectionDAG &DAG) {
   assert(MVT::isFloatingPoint(Op.getOperand(0).getValueType()));
   SDOperand Src = Op.getOperand(0);
@@ -3042,6 +3043,14 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
   return SDOperand();
 }
 
+SDNode *PPCTargetLowering::ExpandOperationResult(SDNode *N, SelectionDAG &DAG) {
+  switch (N->getOpcode()) {
+  default: assert(0 && "Wasn't expecting to be able to lower this!");
+  case ISD::FP_TO_SINT: return LowerFP_TO_SINT(SDOperand(N, 0), DAG).Val;
+  }
+}
+
+
 //===----------------------------------------------------------------------===//
 //  Other Lowering Code
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index 01a35a84553..2df750d92af 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -248,6 +248,8 @@ namespace llvm {
     /// LowerOperation - Provide custom lowering hooks for some operations.
     ///
     virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
+
+    virtual SDNode *ExpandOperationResult(SDNode *N, SelectionDAG &DAG);
     
     virtual SDOperand PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;