#include "core/compiler.hpp"
-#if 0
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Frontend/TextDiagnosticPrinter.h>
#include <clang/CodeGen/CodeGenAction.h>
+#include <llvm/Bitcode/BitstreamWriter.h>
+#include <llvm/Bitcode/ReaderWriter.h>
+#include <llvm/DerivedTypes.h>
+#include <llvm/Linker.h>
#include <llvm/LLVMContext.h>
+#include <llvm/Module.h>
+#include <llvm/PassManager.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Support/MemoryBuffer.h>
+#include <llvm/Support/PathV1.h>
+#include <llvm/Target/TargetData.h>
+#include <llvm/Transforms/IPO/PassManagerBuilder.h>
+
+#include "pipe/p_state.h"
+#include "util/u_memory.h"
#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdio>
-#endif
using namespace clover;
-#if 0
namespace {
+#if 0
void
build_binary(const std::string &source, const std::string &target,
const std::string &name) {
compat::istream cs(str);
return module::deserialize(cs);
}
-}
#endif
+ llvm::Module *
+ compile(const std::string &source, const std::string &name,
+ const std::string &triple) {
+
+ clang::CompilerInstance c;
+ clang::EmitLLVMOnlyAction act(&llvm::getGlobalContext());
+ std::string log;
+ llvm::raw_string_ostream s_log(log);
+
+ c.getFrontendOpts().Inputs.push_back(
+ clang::FrontendInputFile(name, clang::IK_OpenCL));
+ c.getFrontendOpts().ProgramAction = clang::frontend::EmitLLVMOnly;
+ c.getHeaderSearchOpts().UseBuiltinIncludes = true;
+ c.getHeaderSearchOpts().UseStandardSystemIncludes = true;
+ c.getHeaderSearchOpts().ResourceDir = CLANG_RESOURCE_DIR;
+
+ // Add libclc generic search path
+ c.getHeaderSearchOpts().AddPath(LIBCLC_PATH "/generic/include/",
+ clang::frontend::Angled,
+ false, false, false);
+
+ // Add libclc include
+ c.getPreprocessorOpts().Includes.push_back("clc/clc.h");
+
+ // 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.getInvocation().setLangDefaults(clang::IK_OpenCL);
+ c.createDiagnostics(0, NULL, new clang::TextDiagnosticPrinter(
+ s_log, c.getDiagnosticOpts()));
+
+ c.getPreprocessorOpts().addRemappedFile(name,
+ llvm::MemoryBuffer::getMemBuffer(source));
+
+ // Compile the code
+ if (!c.ExecuteAction(act))
+ throw build_error(log);
+
+ return act.takeModule();
+ }
+
+ void
+ link(llvm::Module *mod, const std::string &triple) {
+
+ llvm::PassManager PM;
+ llvm::PassManagerBuilder Builder;
+ bool isNative;
+ llvm::Linker linker("clover", mod);
+
+ // Link the kernel with libclc
+ linker.LinkInFile(llvm::sys::Path(LIBCLC_PATH + triple + "/lib/builtins.bc"), isNative);
+ mod = linker.releaseModule();
+
+ // Run link time optimizations
+ Builder.populateLTOPassManager(PM, false, true);
+ Builder.OptLevel = 2;
+ PM.run(*mod);
+ }
+
+ module
+ build_module_llvm(llvm::Module *mod) {
+
+ module m;
+ struct pipe_llvm_program_header header;
+
+ 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::string kernel_name;
+ compat::vector<module::argument> args;
+ const llvm::NamedMDNode *kernel_node =
+ mod->getNamedMetadata("opencl.kernels");
+ // XXX: Support more than one kernel
+ assert(kernel_node->getNumOperands() <= 1);
+
+ llvm::Function *kernel_func = llvm::dyn_cast<llvm::Function>(
+ kernel_node->getOperand(0)->getOperand(0));
+ kernel_name = kernel_func->getName();
+
+ for (llvm::Function::arg_iterator I = kernel_func->arg_begin(),
+ E = kernel_func->arg_end(); I != E; ++I) {
+ llvm::Argument &arg = *I;
+ llvm::Type *arg_type = arg.getType();
+ llvm::TargetData TD(kernel_func->getParent());
+ unsigned arg_size = TD.getTypeStoreSize(arg_type);
+
+ if (llvm::isa<llvm::PointerType>(arg_type) && arg.hasByValAttr()) {
+ arg_type =
+ llvm::dyn_cast<llvm::PointerType>(arg_type)->getElementType();
+ }
+
+ if (arg_type->isPointerTy()) {
+ // XXX: Figure out LLVM->OpenCL address space mappings for each
+ // target. I think we need to ask clang what these are. For now,
+ // pretend everything is in the global address space.
+ unsigned address_space = llvm::cast<llvm::PointerType>(arg_type)->getAddressSpace();
+ switch (address_space) {
+ default:
+ args.push_back(module::argument(module::argument::global, arg_size));
+ break;
+ }
+ } else {
+ args.push_back(module::argument(module::argument::scalar, arg_size));
+ }
+ }
+
+ header.num_bytes = llvm_bitcode.size();
+ std::string data;
+ data.insert(0, (char*)(&header), sizeof(header));
+ data.insert(data.end(), llvm_bitcode.begin(),
+ llvm_bitcode.end());
+ m.syms.push_back(module::symbol(kernel_name, 0, 0, args ));
+ m.secs.push_back(module::section(0, module::section::text,
+ header.num_bytes, data));
+
+ return m;
+ }
+} // End anonymous namespace
+
module
clover::compile_program_llvm(const compat::string &source,
- const compat::string &target) {
-#if 0
- build_binary(source, target, "cl_input");
- module m = load_binary("cl_input.o");
- std::remove("cl_input.o");
- return m;
-#endif
- return module();
+ enum pipe_shader_ir ir,
+ const compat::string &triple) {
+
+ llvm::Module *mod = compile(source, "cl_input", triple);
+
+ link(mod, triple);
+
+ // Build the clover::module
+ switch (ir) {
+ case PIPE_SHADER_IR_TGSI:
+ //XXX: Handle TGSI
+ assert(0);
+ return module();
+ default:
+ return build_module_llvm(mod);
+ }
}
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