[Mesa-dev] [PATCH 1/3] clover: separate compile and link stages
Francisco Jerez
currojerez at riseup.net
Sun Jul 5 08:15:33 PDT 2015
Hi EdB, a bunch of comments inline,
EdB <edb+mesa at sigluy.net> writes:
> ---
> src/gallium/state_trackers/clover/api/program.cpp | 6 +-
> .../state_trackers/clover/core/compiler.hpp | 7 +-
> src/gallium/state_trackers/clover/core/error.hpp | 21 ++
> src/gallium/state_trackers/clover/core/program.cpp | 93 ++++++-
> src/gallium/state_trackers/clover/core/program.hpp | 10 +-
> .../state_trackers/clover/llvm/invocation.cpp | 281 +++++++++++++++------
> 6 files changed, 323 insertions(+), 95 deletions(-)
>
> diff --git a/src/gallium/state_trackers/clover/api/program.cpp b/src/gallium/state_trackers/clover/api/program.cpp
> index e9b1f38..2441d81 100644
> --- a/src/gallium/state_trackers/clover/api/program.cpp
> +++ b/src/gallium/state_trackers/clover/api/program.cpp
> @@ -184,10 +184,6 @@ clBuildProgram(cl_program d_prog, cl_uint num_devs,
> prog.build(devs, opts);
I don't think there's any reason to keep the program::build method
around anymore, it's only going to be called from this entry point so
you could as well make the two function calls to ::compile() and
::link() directly from here.
> return CL_SUCCESS;
> } catch (error &e) {
> - if (e.get() == CL_INVALID_COMPILER_OPTIONS)
> - return CL_INVALID_BUILD_OPTIONS;
> - if (e.get() == CL_COMPILE_PROGRAM_FAILURE)
> - return CL_BUILD_PROGRAM_FAILURE;
> return e.get();
> }
>
> @@ -224,7 +220,7 @@ clCompileProgram(cl_program d_prog, cl_uint num_devs,
> range(header_names, num_headers),
> objs<allow_empty_tag>(d_header_progs, num_headers));
>
> - prog.build(devs, opts, headers);
> + prog.compile(devs, opts, headers);
> return CL_SUCCESS;
>
> } catch (error &e) {
> diff --git a/src/gallium/state_trackers/clover/core/compiler.hpp b/src/gallium/state_trackers/clover/core/compiler.hpp
> index c68aa39..31fb6ee 100644
> --- a/src/gallium/state_trackers/clover/core/compiler.hpp
> +++ b/src/gallium/state_trackers/clover/core/compiler.hpp
> @@ -32,11 +32,16 @@ namespace clover {
>
> module compile_program_llvm(const std::string &source,
> const header_map &headers,
> - pipe_shader_ir ir,
> const std::string &target,
> const std::string &opts,
> std::string &r_log);
>
> + module link_program_llvm(const std::vector<module> &modules,
> + enum pipe_shader_ir ir,
> + const std::string &target,
> + const std::string &opts,
> + std::string &r_log);
> +
> module compile_program_tgsi(const std::string &source);
> }
>
> diff --git a/src/gallium/state_trackers/clover/core/error.hpp b/src/gallium/state_trackers/clover/core/error.hpp
> index 780b973..3c1bf90 100644
> --- a/src/gallium/state_trackers/clover/core/error.hpp
> +++ b/src/gallium/state_trackers/clover/core/error.hpp
> @@ -68,10 +68,31 @@ namespace clover {
> class build_error : public error {
> public:
> build_error(const std::string &what = "") :
> + error(CL_BUILD_PROGRAM_FAILURE, what) {
> + }
> + };
> +
This exception class now seems redundant -- With program::build() gone
build is no longer a thing.
> + class compile_error : public error {
> + public:
> + compile_error(const std::string &what = "") :
> error(CL_COMPILE_PROGRAM_FAILURE, what) {
> }
> };
>
> + class link_error : public error {
> + public:
> + link_error(const std::string &what = "") :
> + error(CL_LINK_PROGRAM_FAILURE, what) {
> + }
> + };
> +
> + class link_option_error : public error {
> + public:
> + link_option_error(const std::string &what = "") :
> + error(CL_INVALID_LINKER_OPTIONS , what) {
> + }
> + };
> +
I don't think you really need to special-case link_option_error against
the less specific clover::error class?
> template<typename O>
> class invalid_object_error;
>
> diff --git a/src/gallium/state_trackers/clover/core/program.cpp b/src/gallium/state_trackers/clover/core/program.cpp
> index 0d6cc40..21faf4e 100644
> --- a/src/gallium/state_trackers/clover/core/program.cpp
> +++ b/src/gallium/state_trackers/clover/core/program.cpp
> @@ -40,15 +40,37 @@ program::program(clover::context &ctx,
> }
>
> void
> -program::build(const ref_vector<device> &devs, const char *opts,
> - const header_map &headers) {
> +program::build(const ref_vector<device> &devs, const char *opts) {
> +
Unnecessary whitespace.
> + if (has_source) {
> + try {
> + compile(devs, opts, {});
> + if (!link(devs, opts, {*this}, true))
> + throw error(CL_BUILD_PROGRAM_FAILURE);
> + } catch (error &e) {
> + switch (e.get()) {
> + case CL_INVALID_COMPILER_OPTIONS:
> + case CL_INVALID_LINKER_OPTIONS:
> + e = error(CL_INVALID_BUILD_OPTIONS);
> + break;
> + case CL_COMPILE_PROGRAM_FAILURE:
> + case CL_LINK_PROGRAM_FAILURE:
> + e = error(CL_BUILD_PROGRAM_FAILURE);
> + break;
Ugh... This is mutating the caught exception through the l-value
reference and rethrowing. Just saying 'throw error(...)' in each case
statement would be cleaner. Doesn't matter anyway since this function
is going away.
> + }
> + throw;
> + }
> + }
> +}
> +
> +void
> +program::compile(const ref_vector<device> &devs, const char *opts,
> + const header_map &headers) {
> if (has_source) {
> _devices = devs;
>
> for (auto &dev : devs) {
> - _binaries.erase(&dev);
> - _logs.erase(&dev);
> - _opts.erase(&dev);
> + clean(&dev);
>
> _opts.insert({ &dev, opts });
>
> @@ -58,12 +80,11 @@ program::build(const ref_vector<device> &devs, const char *opts,
> auto module = (dev.ir_format() == PIPE_SHADER_IR_TGSI ?
> compile_program_tgsi(_source) :
> compile_program_llvm(_source, headers,
> - dev.ir_format(),
> dev.ir_target(), build_opts(dev),
> log));
> _binaries.insert({ &dev, module });
> _logs.insert({ &dev, log });
> - } catch (const build_error &) {
> + } catch (const compile_error &) {
> _logs.insert({ &dev, log });
> throw;
> }
> @@ -71,6 +92,64 @@ program::build(const ref_vector<device> &devs, const char *opts,
> }
> }
>
> +bool
> +program::link(const ref_vector<device> &devs, const char *opts,
> + const ref_vector<program> &progs, bool keep_log) {
I don't think that the keep_log option is very useful, link could just
preserve the log in all cases -- That would work for clLinkProgram
because there's no log in the first place, and for clBuildProgram too
because the log has to be preserved. (And boolean flags that alter the
semantics of a function are a rather dubious practice in general).
> +
Unnecessary whitespace.
> + bool r = true;
> +
> + _devices = devs;
> +
> + for (auto &dev : devs) {
> + std::vector<module> mods;
> + mods.reserve(progs.size());
> + for (auto &prog : progs)
> + mods.push_back(prog.binary(dev));
> +
const std::vector<module> mods = map([&](const program &prog) {
return prog.binary(dev);
}, progs);
> + clean(&dev, keep_log);
> +
> + _opts.insert({ &dev, opts });
> +
> + if (mods.size() == 0) {
> + append_to_log(&dev, "Nothing to link.");
> + r = false;
> + continue;
> + }
> +
This seems redundant, it's the api layer's responsibility to catch cases
in which zero program objects are being linked, and return
CL_INVALID_VALUE.
> + std::string log;
> +
> + try {
> + auto module = link_program_llvm(mods,
> + dev.ir_format(), dev.ir_target(),
> + opts, log);
> + _binaries.insert({ &dev, module });
> + append_to_log(&dev, log);
> + } catch (const link_option_error &) {
> + append_to_log(&dev, log);
> + throw;
> + } catch (const error &) {
> + append_to_log(&dev, log);
> + r = false;
I suggest you just catch "const error &", update the error log and
rethrow here, so you save a catch block and an error subclass.
> + }
> + }
> +
> + return r;
Ugh... This is mixing exception-based and return code-based error
handling in the same function. Please just throw link_error if anything
goes wrong (what will also simplify all of its users because they will
no longer have to check the return code explicitly).
> +}
> +
> +void
> +program::clean(const device *dev, bool keep_log) {
> + _binaries.erase(dev);
> + _opts.erase(dev);
> + if (!keep_log)
> + _logs.erase(dev);
> +}
This method seems rather ad-hoc and doesn't look like it helps abstract
any knowledge from the callers, because they need to manipulate the maps
directly, and the different handling of build logs forced you to add a
boolean argument that changes the semantics of the function specifically
for each use-case. IMO code like the following:
| clean(dev, true);
is less obvious than the two lines of equivalent code (e.g. a casual
reader might wonder what is being set to true, question that cannot be
answered by looking at the caller alone). I suggest you just open-code
the function, it will be less LoC overall anyway.
> +
> +void
> +program::append_to_log(const device *dev, const std::string &log) {
> + std::string &l = _logs[dev];
> + l.empty() ? l = log : l + "\n" + log;
> +}
> +
This seems wrong. And why is it even necessary? Couldn't you just do
"_logs[&dev] += message;" for each caller? The build logs should
already have been newline-terminated, and if they weren't in some case
it's hiding a bug somewhere else.
> const std::string &
> program::source() const {
> return _source;
> diff --git a/src/gallium/state_trackers/clover/core/program.hpp b/src/gallium/state_trackers/clover/core/program.hpp
> index 183145e..314979b 100644
> --- a/src/gallium/state_trackers/clover/core/program.hpp
> +++ b/src/gallium/state_trackers/clover/core/program.hpp
> @@ -47,8 +47,11 @@ namespace clover {
> program &
> operator=(const program &prog) = delete;
>
> - void build(const ref_vector<device> &devs, const char *opts,
> - const header_map &headers = {});
> + void build(const ref_vector<device> &devs, const char *opts);
> + void compile(const ref_vector<device> &devs, const char *opts,
> + const header_map &headers);
> + bool link(const ref_vector<device> &devs, const char *opts,
> + const ref_vector<program> &progs, bool keep_log = false);
How about we make opts a "const std::string &" for these methods? It's
what the LLVM interfacing code expects now that everything uses STL
types consistently.
>
> const bool has_source;
> const std::string &source() const;
> @@ -69,6 +72,9 @@ namespace clover {
> friend class kernel;
>
> private:
> + void clean(const device *dev, bool keep_log = false);
> + void append_to_log(const device *dev, const std::string &log);
> +
> std::vector<intrusive_ref<device>> _devices;
> std::map<const device *, module> _binaries;
> std::map<const device *, std::string> _logs;
I've stopped reviewing at this point because the changes below seem like
a considerable amount of rather complex churn that could have been done
independently from the changes to the core layer. Maybe split them as a
separate patch?
> diff --git a/src/gallium/state_trackers/clover/llvm/invocation.cpp b/src/gallium/state_trackers/clover/llvm/invocation.cpp
> index 9b91fee..ce5e3f2 100644
> --- a/src/gallium/state_trackers/clover/llvm/invocation.cpp
> +++ b/src/gallium/state_trackers/clover/llvm/invocation.cpp
> @@ -108,7 +108,7 @@ namespace {
> name, llvm::MemoryBuffer::getMemBuffer(source));
>
> if (!c.ExecuteAction(act))
> - throw build_error(log);
> + throw compile_error(log);
> }
>
> module
> @@ -130,22 +130,15 @@ namespace {
> }
> }
>
> - llvm::Module *
> - compile_llvm(llvm::LLVMContext &llvm_ctx, const std::string &source,
> - const header_map &headers,
> - const std::string &name, const std::string &triple,
> - const std::string &processor, const std::string &opts,
> - clang::LangAS::Map& address_spaces, unsigned &optimization_level,
> - std::string &r_log) {
> + bool
> + create_from_arg_llvm(clang::CompilerInstance &c,
> + const std::string &target, const std::string &opts,
> + llvm::raw_string_ostream &log) {
>
> - clang::CompilerInstance c;
> - clang::EmitLLVMOnlyAction act(&llvm_ctx);
> - std::string log;
> - llvm::raw_string_ostream s_log(log);
> - std::string libclc_path = LIBCLC_LIBEXECDIR + processor + "-"
> - + triple + ".bc";
> -
> - // Parse the compiler options:
> + // Parse the compiler options.
> + // A file name should be present at the end
> + // and must have the .cl extension in order for the
> + // CompilerInvocation class to recognize it as an OpenCL source file.
> std::vector<std::string> opts_array;
> std::istringstream ss(opts);
>
> @@ -155,8 +148,6 @@ namespace {
> opts_array.push_back(opt);
> }
>
> - opts_array.push_back(name);
> -
> std::vector<const char *> opts_carray;
> for (unsigned i = 0; i < opts_array.size(); i++) {
> opts_carray.push_back(opts_array.at(i).c_str());
> @@ -171,15 +162,59 @@ namespace {
> DiagsBuffer = new clang::TextDiagnosticBuffer();
>
> clang::DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagsBuffer);
> - bool Success;
>
> + bool Success;
> Success = clang::CompilerInvocation::CreateFromArgs(c.getInvocation(),
> opts_carray.data(),
> opts_carray.data() + opts_carray.size(),
> Diags);
> - if (!Success) {
> +
> + if (Success) {
> + const size_t processor_str_len = target.find_first_of("-");
> + const std::string processor(target, 0, processor_str_len);
> + const std::string triple(target.begin() + processor_str_len + 1,
> + target.end());
> +
> + c.getLangOpts().NoBuiltin = true;
> + c.getTargetOpts().Triple = triple;
> + c.getTargetOpts().CPU = processor;
> +
> + // This is a workaround for a Clang bug which causes the number
> + // of warnings and errors to be printed to stderr.
> + // http://www.llvm.org/bugs/show_bug.cgi?id=19735
> + c.getDiagnosticOpts().ShowCarets = false;
> + c.getInvocation().setLangDefaults(c.getLangOpts(), clang::IK_OpenCL,
> + clang::LangStandard::lang_opencl11);
> + c.createDiagnostics(
> + new clang::TextDiagnosticPrinter(
> + log, &c.getDiagnosticOpts())
> + );
> +
> + c.setTarget(clang::TargetInfo::CreateTargetInfo(c.getDiagnostics(),
> + c.getInvocation().TargetOpts));
> + }
> +
> + return Success;
> + }
> +
> + llvm::Module *
> + compile_llvm(llvm::LLVMContext &llvm_ctx, const std::string &source,
> + const header_map &headers,
> + const std::string &target, const std::string &opts,
> + clang::LangAS::Map& address_spaces, unsigned &optimization_level,
> + std::string &r_log) {
> +
> + clang::CompilerInstance c;
> + clang::EmitLLVMOnlyAction act(&llvm_ctx);
> + std::string log;
> + llvm::raw_string_ostream s_log(log);
> + const std::string name = "compile.cl";
> +
> + if (!create_from_arg_llvm(c, target, opts + " " + name, s_log)) {
> + r_log = log;
> throw error(CL_INVALID_COMPILER_OPTIONS);
> }
> +
> c.getFrontendOpts().ProgramAction = clang::frontend::EmitLLVMOnly;
> c.getHeaderSearchOpts().UseBuiltinIncludes = true;
> c.getHeaderSearchOpts().UseStandardSystemIncludes = true;
> @@ -196,22 +231,6 @@ namespace {
>
> // clc.h requires that this macro be defined:
> c.getPreprocessorOpts().addMacroDef("cl_clang_storage_class_specifiers");
> -
> - c.getLangOpts().NoBuiltin = true;
> - c.getTargetOpts().Triple = triple;
> - c.getTargetOpts().CPU = processor;
> -
> - // This is a workaround for a Clang bug which causes the number
> - // of warnings and errors to be printed to stderr.
> - // http://www.llvm.org/bugs/show_bug.cgi?id=19735
> - c.getDiagnosticOpts().ShowCarets = false;
> - c.getInvocation().setLangDefaults(c.getLangOpts(), clang::IK_OpenCL,
> - clang::LangStandard::lang_opencl11);
> - c.createDiagnostics(
> - new clang::TextDiagnosticPrinter(
> - s_log,
> - &c.getDiagnosticOpts()));
> -
> #if HAVE_LLVM >= 0x0306
> c.getPreprocessorOpts().addRemappedFile(name,
> llvm::MemoryBuffer::getMemBuffer(source).release());
> @@ -247,6 +266,7 @@ namespace {
> // attribute. This attribute will prevent Clang from creating
> // illegal uses of barrier() (e.g. Moving barrier() inside a conditional
> // that is no executed by all threads) during its optimizaton passes.
> + const std::string libclc_path = LIBCLC_LIBEXECDIR + target + ".bc";
> c.getCodeGenOpts().LinkBitcodeFile = libclc_path;
>
> optimization_level = c.getCodeGenOpts().OptimizationLevel;
> @@ -256,7 +276,7 @@ namespace {
> r_log = log;
>
> if (!ExecSuccess)
> - throw build_error();
> + throw compile_error();
>
> // Get address spaces map to be able to find kernel argument address space
> memcpy(address_spaces, c.getTarget().getAddressSpaceMap(),
> @@ -485,7 +505,7 @@ namespace {
> LLVMDisposeMessage(err_message);
>
> if (err) {
> - throw build_error();
> + throw link_error();
> }
> }
>
> @@ -505,7 +525,7 @@ namespace {
> if (LLVMGetTargetFromTriple(triple.c_str(), &target, &error_message)) {
> r_log = std::string(error_message);
> LLVMDisposeMessage(error_message);
> - throw build_error();
> + throw link_error();
> }
>
> LLVMTargetMachineRef tm = LLVMCreateTargetMachine(
> @@ -514,7 +534,7 @@ namespace {
>
> if (!tm) {
> r_log = "Could not create TargetMachine: " + triple;
> - throw build_error();
> + throw link_error();
> }
>
> if (dump_asm) {
> @@ -567,7 +587,7 @@ namespace {
> const char *name;
> if (gelf_getshdr(section, &symtab_header) != &symtab_header) {
> r_log = "Failed to read ELF section header.";
> - throw build_error();
> + throw link_error();
> }
> name = elf_strptr(elf, section_str_index, symtab_header.sh_name);
> if (!strcmp(name, ".symtab")) {
> @@ -577,9 +597,9 @@ namespace {
> }
> if (!symtab) {
> r_log = "Unable to find symbol table.";
> - throw build_error();
> + throw link_error();
> }
> - } catch (build_error &e) {
> + } catch (link_error &e) {
> elf_end(elf);
> throw e;
> }
> @@ -640,6 +660,7 @@ namespace {
> return m;
> }
>
> + template<typename T>
> void
> diagnostic_handler(const llvm::DiagnosticInfo &di, void *data) {
> if (di.getSeverity() == llvm::DS_Error) {
> @@ -650,7 +671,7 @@ namespace {
> stream.flush();
> *(std::string*)data = message;
>
> - throw build_error();
> + throw T();
> }
> }
>
> @@ -689,38 +710,28 @@ namespace {
>
> module
> clover::compile_program_llvm(const std::string &source,
> - const header_map &headers,
> - enum pipe_shader_ir ir,
> - const std::string &target,
> - const std::string &opts,
> - std::string &r_log) {
> + const header_map &headers,
> + const std::string &target,
> + const std::string &opts,
> + std::string &r_log) {
>
> init_targets();
>
> - std::vector<llvm::Function *> kernels;
> - size_t processor_str_len = std::string(target).find_first_of("-");
> - std::string processor(target, 0, processor_str_len);
> - std::string triple(target, processor_str_len + 1,
> - target.size() - processor_str_len - 1);
> clang::LangAS::Map address_spaces;
> llvm::LLVMContext llvm_ctx;
> unsigned optimization_level;
>
> - llvm_ctx.setDiagnosticHandler(diagnostic_handler, &r_log);
> + llvm_ctx.setDiagnosticHandler(diagnostic_handler<compile_error>, &r_log);
>
> if (get_debug_flags() & DBG_CLC)
> - debug_log("// Build options: " + opts + '\n' + source, ".cl");
> + debug_log("// options: " + opts + '\n' + source, ".cl");
>
> // The input file name must have the .cl extension in order for the
> // CompilerInvocation class to recognize it as an OpenCL source file.
> - llvm::Module *mod = compile_llvm(llvm_ctx, source, headers, "input.cl",
> - triple, processor, opts, address_spaces,
> + llvm::Module *mod = compile_llvm(llvm_ctx, source, headers,
> + target, opts, address_spaces,
> optimization_level, r_log);
>
> - find_kernels(mod, kernels);
> -
> - optimize(mod, optimization_level, kernels);
> -
> if (get_debug_flags() & DBG_LLVM) {
> std::string log;
> llvm::raw_string_ostream s_log(log);
> @@ -729,25 +740,18 @@ clover::compile_program_llvm(const std::string &source,
> debug_log(log, ".ll");
> }
>
> + //serialize for later use
> module m;
> - // Build the clover::module
> - switch (ir) {
> - case PIPE_SHADER_IR_TGSI:
> - //XXX: Handle TGSI
> - assert(0);
> - m = module();
> - break;
> - case PIPE_SHADER_IR_LLVM:
> - m = build_module_llvm(mod, kernels, address_spaces);
> - break;
> - case PIPE_SHADER_IR_NATIVE: {
> - std::vector<char> code = compile_native(mod, triple, processor,
> - get_debug_flags() & DBG_ASM,
> - r_log);
> - m = build_module_native(code, mod, kernels, address_spaces, r_log);
> - break;
> - }
> - }
> + llvm::SmallVector<char, 1024> llvm_bitcode;
> + llvm::raw_svector_ostream bitcode_ostream(llvm_bitcode);
> + llvm::BitstreamWriter writer(llvm_bitcode);
> + llvm::WriteBitcodeToFile(mod, bitcode_ostream);
> + bitcode_ostream.flush();
> +
> + std::vector<char> data(llvm_bitcode.begin(), llvm_bitcode.end());
> + m.secs.push_back(module::section(0, module::section::text,
> + data.size(), data));
> +
> #if HAVE_LLVM >= 0x0306
> // LLVM 3.6 and newer, the user takes ownership of the module.
> delete mod;
> @@ -755,3 +759,120 @@ clover::compile_program_llvm(const std::string &source,
>
> return m;
> }
> +
> +
> +module
> +clover::link_program_llvm(const std::vector<module> &modules,
> + enum pipe_shader_ir ir,
> + const std::string &target,
> + const std::string &opts,
> + std::string &r_log) {
> +
> + init_targets();
> +
> + std::string options = opts;
> + bool create_library = false;
> + size_t pos = options.find("-create-library");
> + if (pos != std::string::npos) {
> + create_library = true;
> + options.erase(pos, 15);
> + }
> + options += " link.cl";
> +
> + llvm::LLVMContext llvm_ctx;
> + llvm_ctx.setDiagnosticHandler(diagnostic_handler<link_error>, &r_log);
> +
> + std::string ci_log;
> + llvm::raw_string_ostream rso(ci_log);
> + clang::CompilerInstance c;
> + if (!create_from_arg_llvm(c, target, options, rso)) {
> + r_log = ci_log;
> + throw link_option_error();
> + }
> +
> + llvm::Module linked_mod("link", llvm_ctx);
> + llvm::Linker linker(&linked_mod);
> +
> + for (const auto &mod : modules) {
> + const auto s = llvm::StringRef(mod.secs[0].data.data(),
> + mod.secs[0].data.size());
> +
> + auto m =
> + llvm::parseBitcodeFile(llvm::MemoryBufferRef(s, " "), llvm_ctx);
> +
> + if (!m) {
> + r_log = m.getError().message();
> + throw error(CL_INVALID_PROGRAM);
> + }
> +
> +#if HAVE_LLVM < 0x0306
> + if (linker.linkInModule(*m, &r_log))
> +#elif HAVE_LLVM < 0x0307
> + if (linker.linkInModule(*m))
> +#else
> + if (linker.linkInModule((*m).get()))
> +#endif
> + throw link_error();
> + }
> +
> + module m;
> + std::vector<llvm::Function *> kernels;
> +
> + //optimize
> + if (!create_library)
> + find_kernels(&linked_mod, kernels);
> +
> + unsigned optimization_level = c.getCodeGenOpts().OptimizationLevel;
> + optimize(&linked_mod, optimization_level, kernels);
> +
> +
> + unsigned debug_flags = get_debug_flags();
> +
> + if (debug_flags & DBG_LLVM) {
> + std::string log;
> + llvm::raw_string_ostream s_log(log);
> + linked_mod.print(s_log, NULL);
> + s_log.flush();
> + debug_log(log, ".ll");
> + }
> +
> + if (create_library) {
> + //serialize for later use
> + llvm::SmallVector<char, 1024> llvm_bitcode;
> + llvm::raw_svector_ostream bitcode_ostream(llvm_bitcode);
> + llvm::BitstreamWriter writer(llvm_bitcode);
> + llvm::WriteBitcodeToFile(&linked_mod, bitcode_ostream);
> + bitcode_ostream.flush();
> +
> + std::vector<char> data(llvm_bitcode.begin(), llvm_bitcode.end());
> + m.secs.push_back(module::section(0, module::section::text,
> + data.size(), data));
> +
> + } else {
> + // Get address spaces map to be able to find kernel argument address space
> + clang::LangAS::Map address_spaces;
> + memcpy(address_spaces, c.getTarget().getAddressSpaceMap(),
> + sizeof(address_spaces));
> +
> + // Build the clover::module
> + switch (ir) {
> + case PIPE_SHADER_IR_TGSI:
> + assert(0); // not supported
> + break;
> + case PIPE_SHADER_IR_LLVM:
> + m = build_module_llvm(&linked_mod, kernels, address_spaces);
> + break;
> + case PIPE_SHADER_IR_NATIVE: {
> + auto code = compile_native(&linked_mod, c.getTargetOpts().Triple,
> + c.getTargetOpts().CPU,
> + debug_flags & DBG_ASM, r_log);
> + m = build_module_native(code, &linked_mod, kernels, address_spaces,
> + r_log);
> + break;
> + }
> + }
> +
> + }
> +
> + return m;
> +}
> --
> 2.4.3
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