1 //===-- VETargetMachine.cpp - Define TargetMachine for VE -----------------===//
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 //
10 //===----------------------------------------------------------------------===//
11 
12 #include "VETargetMachine.h"
13 #include "VE.h"
14 #include "llvm/Support/TargetRegistry.h"
15 
16 using namespace llvm;
17 
18 #define DEBUG_TYPE "ve"
19 
20 extern "C" void LLVMInitializeVETarget() {
21   // Register the target.
22   RegisterTargetMachine<VETargetMachine> X(getTheVETarget());
23 }
24 
25 static std::string computeDataLayout(const Triple &T) {
26   // Aurora VE is little endian
27   std::string Ret = "e";
28 
29   // Use ELF mangling
30   Ret += "-m:e";
31 
32   // Alignments for 64 bit integers.
33   Ret += "-i64:64";
34 
35   // VE supports 32 bit and 64 bits integer on registers
36   Ret += "-n32:64";
37 
38   // Stack alignment is 64 bits
39   Ret += "-S64";
40 
41   return Ret;
42 }
43 
44 static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
45   if (!RM.hasValue())
46     return Reloc::Static;
47   return *RM;
48 }
49 
50 /// Create an Aurora VE architecture model
51 VETargetMachine::VETargetMachine(
52     const Target &T, const Triple &TT, StringRef CPU, StringRef FS,
53     const TargetOptions &Options, Optional<Reloc::Model> RM,
54     Optional<CodeModel::Model> CM, CodeGenOpt::Level OL, bool JIT)
55     : LLVMTargetMachine(
56           T, computeDataLayout(TT), TT, CPU, FS, Options,
57           getEffectiveRelocModel(RM),
58           getEffectiveCodeModel(CM, CodeModel::Small),
59           OL)
60 {}
61 
62 VETargetMachine::~VETargetMachine() {}
63