d09207b946a2420ee9158be87992caffe7b3acc7
2 // Copyright 2012-2016 Francisco Jerez
3 // Copyright 2012-2016 Advanced Micro Devices, Inc.
5 // Permission is hereby granted, free of charge, to any person obtaining a
6 // copy of this software and associated documentation files (the "Software"),
7 // to deal in the Software without restriction, including without limitation
8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 // and/or sell copies of the Software, and to permit persons to whom the
10 // Software is furnished to do so, subject to the following conditions:
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 // OTHER DEALINGS IN THE SOFTWARE.
26 /// Trivial codegen back-end that simply passes through the existing LLVM IR
27 /// and either formats it so it can be consumed by pipe drivers (if
28 /// build_module_bitcode() is used) or serializes so it can be deserialized at
29 /// a later point and passed to the actual codegen back-end (if
30 /// build_module_library() / parse_module_library() is used), potentially
31 /// after linking against other bitcode object files.
34 #include "llvm/codegen.hpp"
35 #include "llvm/compat.hpp"
36 #include "llvm/metadata.hpp"
37 #include "core/error.hpp"
38 #include "util/algorithm.hpp"
41 #if HAVE_LLVM < 0x0400
42 #include <llvm/Bitcode/ReaderWriter.h>
44 #include <llvm/Bitcode/BitcodeReader.h>
45 #include <llvm/Bitcode/BitcodeWriter.h>
47 #include <llvm/Support/raw_ostream.h>
49 using namespace clover
;
50 using namespace clover::llvm
;
53 std::map
<std::string
, unsigned>
54 get_symbol_offsets(const ::llvm::Module
&mod
) {
55 std::map
<std::string
, unsigned> offsets
;
58 for (const auto &name
: map(std::mem_fn(&::llvm::Function::getName
),
66 emit_code(const ::llvm::Module
&mod
) {
67 ::llvm::SmallVector
<char, 1024> data
;
68 ::llvm::raw_svector_ostream os
{ data
};
69 WriteBitcodeToFile(&mod
, os
);
70 return { os
.str().begin(), os
.str().end() };
75 clover::llvm::build_module_bitcode(const ::llvm::Module
&mod
,
76 const clang::CompilerInstance
&c
) {
77 return build_module_common(mod
, emit_code(mod
), get_symbol_offsets(mod
), c
);
81 clover::llvm::print_module_bitcode(const ::llvm::Module
&mod
) {
83 ::llvm::raw_string_ostream os
{ s
};
89 clover::llvm::build_module_library(const ::llvm::Module
&mod
,
90 enum module::section::type section_type
) {
92 const auto code
= emit_code(mod
);
93 m
.secs
.emplace_back(0, section_type
, code
.size(), code
);
97 std::unique_ptr
<::llvm::Module
>
98 clover::llvm::parse_module_library(const module
&m
, ::llvm::LLVMContext
&ctx
,
100 auto mod
= ::llvm::parseBitcodeFile(::llvm::MemoryBufferRef(
101 as_string(m
.secs
[0].data
), " "), ctx
);
103 compat::handle_module_error(mod
, [&](const std::string
&s
) {
104 fail(r_log
, error(CL_INVALID_PROGRAM
), s
);
107 return std::unique_ptr
<::llvm::Module
>(std::move(*mod
));