1 //===---- PPCCCState.h - CCState with PowerPC specific extensions -----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef PPCCCSTATE_H
10 #define PPCCCSTATE_H
11 
12 #include "PPCISelLowering.h"
13 #include "llvm/ADT/BitVector.h"
14 #include "llvm/ADT/SmallVector.h"
15 #include "llvm/CodeGen/CallingConvLower.h"
16 
17 namespace llvm {
18 
19 class PPCCCState : public CCState {
20 public:
21 
22   void
23   PreAnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs);
24   void
25   PreAnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins);
26 
27 private:
28 
29   // Records whether the value has been lowered from an ppcf128.
30   SmallVector<bool, 4> OriginalArgWasPPCF128;
31 
32 public:
33   PPCCCState(CallingConv::ID CC, bool isVarArg, MachineFunction &MF,
34              SmallVectorImpl<CCValAssign> &locs, LLVMContext &C)
35         : CCState(CC, isVarArg, MF, locs, C) {}
36 
37   bool WasOriginalArgPPCF128(unsigned ValNo) { return OriginalArgWasPPCF128[ValNo]; }
38   void clearWasPPCF128() { OriginalArgWasPPCF128.clear(); }
39 };
40 
41 class AIXCCState : public CCState {
42 private:
43   BitVector IsFixed;
44 
45 public:
46   AIXCCState(CallingConv::ID CC, bool IsVarArg, MachineFunction &MF,
47              SmallVectorImpl<CCValAssign> &Locs, LLVMContext &C)
48       : CCState(CC, IsVarArg, MF, Locs, C) {}
49 
50   void AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
51                               CCAssignFn Fn) {
52     // All formal arguments are fixed.
53     IsFixed.resize(Ins.size(), true);
54     CCState::AnalyzeFormalArguments(Ins, Fn);
55   }
56 
57   void AnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
58                            CCAssignFn Fn) {
59     // Record whether the call operand was a fixed argument.
60     IsFixed.resize(Outs.size(), false);
61     for (unsigned ValNo = 0, E = Outs.size(); ValNo != E; ++ValNo)
62       if (Outs[ValNo].IsFixed)
63         IsFixed.set(ValNo);
64 
65     CCState::AnalyzeCallOperands(Outs, Fn);
66   }
67 
68   bool isFixed(unsigned ValNo) const { return IsFixed.test(ValNo); }
69 };
70 
71 } // end namespace llvm
72 
73 #endif
74