1 //===-- XCoreTargetTransformInfo.h - XCore specific TTI ---------*- C++ -*-===//
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 /// \file
9 /// This file a TargetTransformInfo::Concept conforming object specific to the
10 /// XCore target machine. It uses the target's detailed information to
11 /// provide more precise answers to certain TTI queries, while letting the
12 /// target independent and default TTI implementations handle the rest.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_LIB_TARGET_XCORE_XCORETARGETTRANSFORMINFO_H
17 #define LLVM_LIB_TARGET_XCORE_XCORETARGETTRANSFORMINFO_H
18 
19 #include "XCore.h"
20 #include "XCoreTargetMachine.h"
21 #include "llvm/Analysis/TargetTransformInfo.h"
22 #include "llvm/CodeGen/BasicTTIImpl.h"
23 #include "llvm/CodeGen/TargetLowering.h"
24 
25 namespace llvm {
26 
27 class XCoreTTIImpl : public BasicTTIImplBase<XCoreTTIImpl> {
28   typedef BasicTTIImplBase<XCoreTTIImpl> BaseT;
29   typedef TargetTransformInfo TTI;
30   friend BaseT;
31 
32   const XCoreSubtarget *ST;
33   const XCoreTargetLowering *TLI;
34 
35   const XCoreSubtarget *getST() const { return ST; }
36   const XCoreTargetLowering *getTLI() const { return TLI; }
37 
38 public:
39   explicit XCoreTTIImpl(const XCoreTargetMachine *TM, const Function &F)
40       : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl()),
41         TLI(ST->getTargetLowering()) {}
42 
43   unsigned getNumberOfRegisters(unsigned ClassID) const {
44     bool Vector = (ClassID == 1);
45     if (Vector) {
46       return 0;
47     }
48     return 12;
49   }
50 };
51 
52 } // end namespace llvm
53 
54 #endif
55