fold fp_round(fp_round(x)) -> fp_round(x).

[oota-llvm.git] / lib / CodeGen / SelectionDAG / CallingConvLower.cpp

diff --git a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
index bcd132fb03e4169b6eaf3e5f10f1096090239670..337c7fda9ab2509a8cff7112d12202789e383e33 100644 (file)
--- a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
+++ b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -15,6 +15,7 @@
 #include "llvm/CodeGen/CallingConvLower.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 using namespace llvm;
 
@@ -28,13 +29,21 @@ CCState::CCState(unsigned CC, bool isVarArg, const TargetMachine &tm,
   UsedRegs.resize(MRI.getNumRegs());
 }
 
-void CCState::HandleStruct(unsigned ValNo, MVT::ValueType ValVT,
-                           MVT::ValueType LocVT, CCValAssign::LocInfo LocInfo,
-                           unsigned ArgFlags) {
+// HandleByVal - Allocate a stack slot large enough to pass an argument by
+// value. The size and alignment information of the argument is encoded in its
+// parameter attribute.
+void CCState::HandleByVal(unsigned ValNo, MVT::ValueType ValVT,
+                          MVT::ValueType LocVT, CCValAssign::LocInfo LocInfo,
+                          int MinSize, int MinAlign,
+                          unsigned ArgFlags) {
   unsigned Align  = 1 << ((ArgFlags & ISD::ParamFlags::ByValAlign) >>
                           ISD::ParamFlags::ByValAlignOffs);
   unsigned Size   = (ArgFlags & ISD::ParamFlags::ByValSize) >>
       ISD::ParamFlags::ByValSizeOffs;
+  if (MinSize > (int)Size)
+    Size = MinSize;
+  if (MinAlign > (int)Align)
+    Align = MinAlign;
   unsigned Offset = AllocateStack(Size, Align);
 
   addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));