Temporarily revert r104655 as it's breaking the bots.

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

diff --git a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
index fbe40b678639b0b5d1016824b1e9e5bc16d116e3..4e6c1fcc96049fca4d66d24ab8a6e976c59a16b0 100644 (file)
--- a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
+++ b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/CallingConvLower.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetRegisterInfo.h"
@@ -69,7 +70,7 @@ CCState::AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
     ISD::ArgFlagsTy ArgFlags = Ins[i].Flags;
     if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
 #ifndef NDEBUG
-      errs() << "Formal argument #" << i << " has unhandled type "
+      dbgs() << "Formal argument #" << i << " has unhandled type "
              << ArgVT.getEVTString();
 #endif
       llvm_unreachable(0);
@@ -77,6 +78,21 @@ CCState::AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
   }
 }
 
+/// CheckReturn - Analyze the return values of a function, returning true if
+/// the return can be performed without sret-demotion, and false otherwise.
+bool CCState::CheckReturn(const SmallVectorImpl<EVT> &OutTys,
+                          const SmallVectorImpl<ISD::ArgFlagsTy> &ArgsFlags,
+                          CCAssignFn Fn) {
+  // Determine which register each value should be copied into.
+  for (unsigned i = 0, e = OutTys.size(); i != e; ++i) {
+    EVT VT = OutTys[i];
+    ISD::ArgFlagsTy ArgFlags = ArgsFlags[i];
+    if (Fn(i, VT, VT, CCValAssign::Full, ArgFlags, *this))
+      return false;
+  }
+  return true;
+}
+
 /// AnalyzeReturn - Analyze the returned values of a return,
 /// incorporating info about the result values into this state.
 void CCState::AnalyzeReturn(const SmallVectorImpl<ISD::OutputArg> &Outs,
@@ -87,7 +103,7 @@ void CCState::AnalyzeReturn(const SmallVectorImpl<ISD::OutputArg> &Outs,
     ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
     if (Fn(i, VT, VT, CCValAssign::Full, ArgFlags, *this)) {
 #ifndef NDEBUG
-      errs() << "Return operand #" << i << " has unhandled type "
+      dbgs() << "Return operand #" << i << " has unhandled type "
              << VT.getEVTString();
 #endif
       llvm_unreachable(0);
@@ -106,7 +122,7 @@ void CCState::AnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
     ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
     if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
 #ifndef NDEBUG
-      errs() << "Call operand #" << i << " has unhandled type "
+      dbgs() << "Call operand #" << i << " has unhandled type "
              << ArgVT.getEVTString();
 #endif
       llvm_unreachable(0);
@@ -125,7 +141,7 @@ void CCState::AnalyzeCallOperands(SmallVectorImpl<EVT> &ArgVTs,
     ISD::ArgFlagsTy ArgFlags = Flags[i];
     if (Fn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, *this)) {
 #ifndef NDEBUG
-      errs() << "Call operand #" << i << " has unhandled type "
+      dbgs() << "Call operand #" << i << " has unhandled type "
              << ArgVT.getEVTString();
 #endif
       llvm_unreachable(0);
@@ -142,7 +158,7 @@ void CCState::AnalyzeCallResult(const SmallVectorImpl<ISD::InputArg> &Ins,
     ISD::ArgFlagsTy Flags = Ins[i].Flags;
     if (Fn(i, VT, VT, CCValAssign::Full, Flags, *this)) {
 #ifndef NDEBUG
-      errs() << "Call result #" << i << " has unhandled type "
+      dbgs() << "Call result #" << i << " has unhandled type "
              << VT.getEVTString();
 #endif
       llvm_unreachable(0);
@@ -155,7 +171,7 @@ void CCState::AnalyzeCallResult(const SmallVectorImpl<ISD::InputArg> &Ins,
 void CCState::AnalyzeCallResult(EVT VT, CCAssignFn Fn) {
   if (Fn(0, VT, VT, CCValAssign::Full, ISD::ArgFlagsTy(), *this)) {
 #ifndef NDEBUG
-    errs() << "Call result has unhandled type "
+    dbgs() << "Call result has unhandled type "
            << VT.getEVTString();
 #endif
     llvm_unreachable(0);