[Mesa-dev] [PATCH 10/11] clover: Add function for building a clover::module for non-TGSI targets
Tom Stellard
tstellar at gmail.com
Fri May 11 09:39:25 PDT 2012
---
.../state_trackers/clover/llvm/invocation.cpp | 174 +++++++++++++++++++-
1 files changed, 165 insertions(+), 9 deletions(-)
diff --git a/src/gallium/state_trackers/clover/llvm/invocation.cpp b/src/gallium/state_trackers/clover/llvm/invocation.cpp
index 89e21bf..b31fddc 100644
--- a/src/gallium/state_trackers/clover/llvm/invocation.cpp
+++ b/src/gallium/state_trackers/clover/llvm/invocation.cpp
@@ -22,24 +22,33 @@
#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 "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) {
@@ -78,17 +87,164 @@ namespace {
compat::istream cs(str);
return module::deserialize(cs);
}
-}
#endif
+ module
+ build_module_llvm(const std::string &source, const std::string &target,
+ const std::string &name) {
+
+ /* Compile the kernel */
+ clang::CompilerInstance c;
+ module m;
+ clang::EmitLLVMOnlyAction act(&llvm::getGlobalContext());
+ std::string log;
+ std::string target_triple = target + "--";
+ llvm::raw_string_ostream s_log(log);
+
+#if HAVE_LLVM <= 0x0300
+ c.getFrontendOpts().Inputs.push_back(
+ std::make_pair(clang::IK_OpenCL, "cl_input"));
+#else
+ c.getFrontendOpts().Inputs.push_back(
+ clang::FrontendInputFile("cl_input", clang::IK_OpenCL));
+#endif
+ c.getFrontendOpts().ProgramAction = clang::frontend::EmitLLVMOnly;
+ c.getHeaderSearchOpts().UseBuiltinIncludes = true;
+#if HAVE_LLVM < 0x0300
+ c.getHeaderSearchOpts().UseStandardIncludes = true;
+#else
+ c.getHeaderSearchOpts().UseStandardSystemIncludes = true;
+#endif
+ 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 target specific search path */
+ c.getHeaderSearchOpts().AddPath(LIBCLC_PATH + target + "/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 = target_triple;
+ c.getInvocation().setLangDefaults(clang::IK_OpenCL);
+ c.createDiagnostics(0, NULL, new clang::TextDiagnosticPrinter(
+ s_log, c.getDiagnosticOpts()));
+
+ c.getPreprocessorOpts().addRemappedFile(
+ "cl_input", llvm::MemoryBuffer::getMemBuffer(source));
+
+ /* Compile the code */
+ if (!c.ExecuteAction(act))
+ throw build_error(log);
+
+ /* Link the kernel with libclc */
+ llvm::PassManager PM;
+ llvm::PassManagerBuilder Builder;
+ bool isNative;
+ llvm::Module * mod = act.takeModule();
+ llvm::Linker linker("clover", mod);
+
+ linker.LinkInFile(llvm::sys::Path(LIBCLC_PATH + target_triple + "/lib/builtins.bc"), isNative);
+ mod = linker.releaseModule();
+
+ /* Run link time optimizations */
+ Builder.populateLTOPassManager(PM, false, true);
+ Builder.OptLevel = 2;
+ PM.run(*mod);
+
+ /* Build the clover::module */
+ unsigned char * prog;
+ uint32_t prog_sz;
+
+#if HAVE_LLVM > 0x0300
+ llvm::SmallVector<char, 1024> llvm_bitcode;
+ llvm::raw_svector_ostream bitcode_ostream(llvm_bitcode);
+#else
+ std::vector<unsigned char> llvm_bitcode;
+#endif
+ llvm::BitstreamWriter writer(llvm_bitcode);
+
+#if HAVE_LLVM <= 0x0300
+ llvm::WriteBitcodeToStream(mod, writer);
+#else
+ llvm::WriteBitcodeToFile(mod, bitcode_ostream);
+ bitcode_ostream.flush();
+#endif
+
+ prog_sz = llvm_bitcode.size() * sizeof(unsigned char);
+
+ /* We need to add 4 to the program size, because we will
+ * be preprending the length of the program to the bitcode string. */
+ prog = (unsigned char *)MALLOC(prog_sz + 4);
+ ((uint32_t *)prog)[0] = prog_sz;
+ memcpy(prog + 4, &llvm_bitcode[0], prog_sz);
+
+ std::string kernel_name;
+ compat::vector<module::argument> args;
+ const llvm::NamedMDNode * kernel_node =
+ mod->getNamedMetadata("opencl.kernels");
+ /* XXX: Support more than one kernel */
+ /* XXX: Error if there are no kernels */
+ 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) and 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));
+ }
+ }
+ m.syms.push_back(module::symbol(kernel_name, 0, 0, args ));
+ m.secs.push_back(module::section(0, module::section::text, prog_sz + 4,
+ compat::vector<char>((char *)prog, prog_sz + 4)));
+ return m;
+ }
+}
module
clover::compile_program_llvm(const compat::string &source,
const compat::string &target) {
+
+ if (target == compat::string("TGSI")) {
#if 0
- build_binary(source, target, "cl_input");
- module m = load_binary("cl_input.o");
- std::remove("cl_input.o");
- return m;
+ build_binary(source, target, "cl_input");
+ module m = load_binary("cl_input.o");
+ std::remove("cl_input.o");
+ return m;
+#else
+ return module();
+ } else {
+ return build_module_llvm(source, target, "cl_input");
+ }
#endif
- return module();
}
--
1.7.7.6
More information about the mesa-dev
mailing list