src/gallium/drivers/radeon/radeon_llvm_emit.cpp

   1 /*
   2  * Copyright 2011 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  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 OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors: Tom Stellard <thomas.stellard@amd.com>
  24  *
  25  */
  26 #include "radeon_llvm_emit.h"
  27
  28 #include <llvm/LLVMContext.h>
  29 #include <llvm/Module.h>
  30 #include <llvm/PassManager.h>
  31 #include <llvm/ADT/Triple.h>
  32 #include <llvm/Support/FormattedStream.h>
  33 #include <llvm/Support/Host.h>
  34 #include <llvm/Support/IRReader.h>
  35 #include <llvm/Support/SourceMgr.h>
  36 #include <llvm/Support/TargetRegistry.h>
  37 #include <llvm/Support/TargetSelect.h>
  38 #include <llvm/Target/TargetData.h>
  39 #include <llvm/Target/TargetMachine.h>
  40
  41 #include <llvm/Transforms/Scalar.h>
  42
  43 #include <llvm-c/Target.h>
  44
  45 #include <iostream>
  46 #include <stdlib.h>
  47 #include <stdio.h>
  48
  49 using namespace llvm;
  50
  51 #ifndef EXTERNAL_LLVM
  52 extern "C" {
  53
  54 void LLVMInitializeAMDILTargetMC(void);
  55 void LLVMInitializeAMDILTarget(void);
  56 void LLVMInitializeAMDILTargetInfo(void);
  57 }
  58 #endif
  59
  60 /**
  61  * Compile an LLVM module to machine code.
  62  *
  63  * @param bytes This function allocates memory for the byte stream, it is the
  64  * caller's responsibility to free it.
  65  */
  66 extern "C" unsigned
  67 radeon_llvm_compile(LLVMModuleRef M, unsigned char ** bytes,
  68                  unsigned * byte_count, const char * gpu_family,
  69                  unsigned dump) {
  70
  71    Triple AMDGPUTriple(sys::getDefaultTargetTriple());
  72
  73 #ifdef EXTERNAL_LLVM
  74    /* XXX: Can we just initialize the AMDGPU target here? */
  75    InitializeAllTargets();
  76    InitializeAllTargetMCs();
  77 #else
  78    LLVMInitializeAMDILTargetInfo();
  79    LLVMInitializeAMDILTarget();
  80    LLVMInitializeAMDILTargetMC();
  81 #endif
  82    std::string err;
  83    const Target * AMDGPUTarget = TargetRegistry::lookupTarget("r600", err);
  84    if(!AMDGPUTarget) {
  85       fprintf(stderr, "Can't find target: %s\n", err.c_str());
  86       return 1;
  87    }
  88
  89    Triple::ArchType Arch = Triple::getArchTypeForLLVMName("r600");
  90    if (Arch == Triple::UnknownArch) {
  91       fprintf(stderr, "Unknown Arch\n");
  92    }
  93    AMDGPUTriple.setArch(Arch);
  94
  95    Module * mod = unwrap(M);
  96    std::string FS = gpu_family;
  97    TargetOptions TO;
  98
  99    std::auto_ptr<TargetMachine> tm(AMDGPUTarget->createTargetMachine(
 100                      AMDGPUTriple.getTriple(), gpu_family, "" /* Features */,
 101                      TO, Reloc::Default, CodeModel::Default,
 102                      CodeGenOpt::Default
 103                      ));
 104    TargetMachine &AMDGPUTargetMachine = *tm.get();
 105    /* XXX: Use TargetMachine.Options in 3.0 */
 106    if (dump) {
 107       mod->dump();
 108    }
 109    PassManager PM;
 110    PM.add(new TargetData(*AMDGPUTargetMachine.getTargetData()));
 111    PM.add(createPromoteMemoryToRegisterPass());
 112    AMDGPUTargetMachine.setAsmVerbosityDefault(true);
 113
 114    std::string CodeString;
 115    raw_string_ostream oStream(CodeString);
 116    formatted_raw_ostream out(oStream);
 117
 118    /* Optional extra paramater true / false to disable verify */
 119    if (AMDGPUTargetMachine.addPassesToEmitFile(PM, out, TargetMachine::CGFT_AssemblyFile,
 120                                                true)){
 121       fprintf(stderr, "AddingPasses failed.\n");
 122       return 1;
 123    }
 124    PM.run(*mod);
 125
 126    out.flush();
 127    std::string &data = oStream.str();
 128
 129    *bytes = (unsigned char*)malloc(data.length() * sizeof(unsigned char));
 130    memcpy(*bytes, data.c_str(), data.length() * sizeof(unsigned char));
 131    *byte_count = data.length();
 132
 133    return 0;
 134 }