1 files changed, 84 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/SystemZ/SystemZCallingConv.h b/contrib/llvm/lib/Target/SystemZ/SystemZCallingConv.h
new file mode 100644
index 0000000..bff0706
--- /dev/null
+++ b/contrib/llvm/lib/Target/SystemZ/SystemZCallingConv.h
@@ -0,0 +1,84 @@
+//===-- SystemZCallingConv.h - Calling conventions for SystemZ --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCALLINGCONV_H
+#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZCALLINGCONV_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/CallingConvLower.h"
+
+namespace llvm {
+namespace SystemZ {
+  const unsigned NumArgGPRs = 5;
+  extern const unsigned ArgGPRs[NumArgGPRs];
+
+  const unsigned NumArgFPRs = 4;
+  extern const unsigned ArgFPRs[NumArgFPRs];
+} // end namespace SystemZ
+
+class SystemZCCState : public CCState {
+private:
+  /// Records whether the value was a fixed argument.
+  /// See ISD::OutputArg::IsFixed.
+  SmallVector<bool, 4> ArgIsFixed;
+
+  /// Records whether the value was widened from a short vector type.
+  SmallVector<bool, 4> ArgIsShortVector;
+
+  // Check whether ArgVT is a short vector type.
+  bool IsShortVectorType(EVT ArgVT) {
+    return ArgVT.isVector() && ArgVT.getStoreSize() <= 8;
+  }
+
+public:
+  SystemZCCState(CallingConv::ID CC, bool isVarArg, MachineFunction &MF,
+                 SmallVectorImpl<CCValAssign> &locs, LLVMContext &C)
+      : CCState(CC, isVarArg, MF, locs, C) {}
+
+  void AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
+                              CCAssignFn Fn) {
+    // Formal arguments are always fixed.
+    ArgIsFixed.clear();
+    for (unsigned i = 0; i < Ins.size(); ++i)
+      ArgIsFixed.push_back(true);
+    // Record whether the call operand was a short vector.
+    ArgIsShortVector.clear();
+    for (unsigned i = 0; i < Ins.size(); ++i)
+      ArgIsShortVector.push_back(IsShortVectorType(Ins[i].ArgVT));
+
+    CCState::AnalyzeFormalArguments(Ins, Fn);
+  }
+
+  void AnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
+                           CCAssignFn Fn) {
+    // Record whether the call operand was a fixed argument.
+    ArgIsFixed.clear();
+    for (unsigned i = 0; i < Outs.size(); ++i)
+      ArgIsFixed.push_back(Outs[i].IsFixed);
+    // Record whether the call operand was a short vector.
+    ArgIsShortVector.clear();
+    for (unsigned i = 0; i < Outs.size(); ++i)
+      ArgIsShortVector.push_back(IsShortVectorType(Outs[i].ArgVT));
+
+    CCState::AnalyzeCallOperands(Outs, Fn);
+  }
+
+  // This version of AnalyzeCallOperands in the base class is not usable
+  // since we must provide a means of accessing ISD::OutputArg::IsFixed.
+  void AnalyzeCallOperands(const SmallVectorImpl<MVT> &Outs,
+                           SmallVectorImpl<ISD::ArgFlagsTy> &Flags,
+                           CCAssignFn Fn) = delete;
+
+  bool IsFixed(unsigned ValNo) { return ArgIsFixed[ValNo]; }
+  bool IsShortVector(unsigned ValNo) { return ArgIsShortVector[ValNo]; }
+};
+
+} // end namespace llvm
+
+#endif