1 //===--- PPC.cpp - PPC Helpers for Tools ------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "PPC.h"
11 #include "ToolChains/CommonArgs.h"
12 #include "clang/Driver/Driver.h"
13 #include "clang/Driver/DriverDiagnostic.h"
14 #include "clang/Driver/Options.h"
15 #include "llvm/ADT/StringSwitch.h"
16 #include "llvm/Option/ArgList.h"
17 
18 using namespace clang::driver;
19 using namespace clang::driver::tools;
20 using namespace clang;
21 using namespace llvm::opt;
22 
23 /// getPPCTargetCPU - Get the (LLVM) name of the PowerPC cpu we are targeting.
24 std::string ppc::getPPCTargetCPU(const ArgList &Args) {
25   if (Arg *A = Args.getLastArg(clang::driver::options::OPT_mcpu_EQ)) {
26     StringRef CPUName = A->getValue();
27 
28     if (CPUName == "native") {
29       std::string CPU = llvm::sys::getHostCPUName();
30       if (!CPU.empty() && CPU != "generic")
31         return CPU;
32       else
33         return "";
34     }
35 
36     return llvm::StringSwitch<const char *>(CPUName)
37         .Case("common", "generic")
38         .Case("440", "440")
39         .Case("440fp", "440")
40         .Case("450", "450")
41         .Case("601", "601")
42         .Case("602", "602")
43         .Case("603", "603")
44         .Case("603e", "603e")
45         .Case("603ev", "603ev")
46         .Case("604", "604")
47         .Case("604e", "604e")
48         .Case("620", "620")
49         .Case("630", "pwr3")
50         .Case("G3", "g3")
51         .Case("7400", "7400")
52         .Case("G4", "g4")
53         .Case("7450", "7450")
54         .Case("G4+", "g4+")
55         .Case("750", "750")
56         .Case("970", "970")
57         .Case("G5", "g5")
58         .Case("a2", "a2")
59         .Case("a2q", "a2q")
60         .Case("e500mc", "e500mc")
61         .Case("e5500", "e5500")
62         .Case("power3", "pwr3")
63         .Case("power4", "pwr4")
64         .Case("power5", "pwr5")
65         .Case("power5x", "pwr5x")
66         .Case("power6", "pwr6")
67         .Case("power6x", "pwr6x")
68         .Case("power7", "pwr7")
69         .Case("power8", "pwr8")
70         .Case("power9", "pwr9")
71         .Case("pwr3", "pwr3")
72         .Case("pwr4", "pwr4")
73         .Case("pwr5", "pwr5")
74         .Case("pwr5x", "pwr5x")
75         .Case("pwr6", "pwr6")
76         .Case("pwr6x", "pwr6x")
77         .Case("pwr7", "pwr7")
78         .Case("pwr8", "pwr8")
79         .Case("pwr9", "pwr9")
80         .Case("powerpc", "ppc")
81         .Case("powerpc64", "ppc64")
82         .Case("powerpc64le", "ppc64le")
83         .Default("");
84   }
85 
86   return "";
87 }
88 
89 const char *ppc::getPPCAsmModeForCPU(StringRef Name) {
90   return llvm::StringSwitch<const char *>(Name)
91         .Case("pwr7", "-mpower7")
92         .Case("power7", "-mpower7")
93         .Case("pwr8", "-mpower8")
94         .Case("power8", "-mpower8")
95         .Case("ppc64le", "-mpower8")
96         .Case("pwr9", "-mpower9")
97         .Case("power9", "-mpower9")
98         .Default("-many");
99 }
100 
101 void ppc::getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
102                                const ArgList &Args,
103                                std::vector<StringRef> &Features) {
104   handleTargetFeaturesGroup(Args, Features, options::OPT_m_ppc_Features_Group);
105 
106   ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
107   if (FloatABI == ppc::FloatABI::Soft)
108     Features.push_back("-hard-float");
109 }
110 
111 ppc::FloatABI ppc::getPPCFloatABI(const Driver &D, const ArgList &Args) {
112   ppc::FloatABI ABI = ppc::FloatABI::Invalid;
113   if (Arg *A =
114           Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
115                           options::OPT_mfloat_abi_EQ)) {
116     if (A->getOption().matches(options::OPT_msoft_float))
117       ABI = ppc::FloatABI::Soft;
118     else if (A->getOption().matches(options::OPT_mhard_float))
119       ABI = ppc::FloatABI::Hard;
120     else {
121       ABI = llvm::StringSwitch<ppc::FloatABI>(A->getValue())
122                 .Case("soft", ppc::FloatABI::Soft)
123                 .Case("hard", ppc::FloatABI::Hard)
124                 .Default(ppc::FloatABI::Invalid);
125       if (ABI == ppc::FloatABI::Invalid && !StringRef(A->getValue()).empty()) {
126         D.Diag(clang::diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
127         ABI = ppc::FloatABI::Hard;
128       }
129     }
130   }
131 
132   // If unspecified, choose the default based on the platform.
133   if (ABI == ppc::FloatABI::Invalid) {
134     ABI = ppc::FloatABI::Hard;
135   }
136 
137   return ABI;
138 }
139 
140 bool ppc::hasPPCAbiArg(const ArgList &Args, const char *Value) {
141   Arg *A = Args.getLastArg(options::OPT_mabi_EQ);
142   return A && (A->getValue() == StringRef(Value));
143 }
144