lp_bld_misc.cpp revision e6314db0ac537695a20feb5fab8d77a30836eccf
1/************************************************************************** 2 * 3 * Copyright 2010 VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20 * USE OR OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * The above copyright notice and this permission notice (including the 23 * next paragraph) shall be included in all copies or substantial portions 24 * of the Software. 25 * 26 **************************************************************************/ 27 28 29#ifndef __STDC_LIMIT_MACROS 30#define __STDC_LIMIT_MACROS 31#endif 32 33#ifndef __STDC_CONSTANT_MACROS 34#define __STDC_CONSTANT_MACROS 35#endif 36 37#include <llvm-c/Core.h> 38#include <llvm-c/ExecutionEngine.h> 39#include <llvm/Target/TargetOptions.h> 40#include <llvm/ExecutionEngine/ExecutionEngine.h> 41#include <llvm/ExecutionEngine/JITEventListener.h> 42#include <llvm/Support/CommandLine.h> 43#include <llvm/Support/PrettyStackTrace.h> 44 45#include "pipe/p_config.h" 46#include "util/u_debug.h" 47 48 49/** 50 * Register the engine with oprofile. 51 * 52 * This allows to see the LLVM IR function names in oprofile output. 53 * 54 * To actually work LLVM needs to be built with the --with-oprofile configure 55 * option. 56 * 57 * Also a oprofile:oprofile user:group is necessary. Which is not created by 58 * default on some distributions. 59 */ 60extern "C" void 61lp_register_oprofile_jit_event_listener(LLVMExecutionEngineRef EE) 62{ 63 llvm::unwrap(EE)->RegisterJITEventListener(llvm::createOProfileJITEventListener()); 64} 65 66 67extern "C" void 68lp_set_target_options(void) 69{ 70#if defined(DEBUG) 71#if HAVE_LLVM >= 0x0207 72 llvm::JITEmitDebugInfo = true; 73#endif 74#endif 75 76#if defined(DEBUG) || defined(PROFILE) 77 llvm::NoFramePointerElim = true; 78#endif 79 80 llvm::NoExcessFPPrecision = false; 81 82 /* XXX: Investigate this */ 83#if 0 84 llvm::UnsafeFPMath = true; 85#endif 86 87#if HAVE_LLVM < 0x0209 88 /* 89 * LLVM will generate MMX instructions for vectors <= 64 bits, leading to 90 * innefficient code, and in 32bit systems, to the corruption of the FPU 91 * stack given that it expects the user to generate the EMMS instructions. 92 * 93 * See also: 94 * - http://llvm.org/bugs/show_bug.cgi?id=3287 95 * - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/ 96 */ 97 static boolean first = TRUE; 98 if (first) { 99 static const char* options[] = { 100 "prog", 101 "-disable-mmx" 102 }; 103 llvm::cl::ParseCommandLineOptions(2, const_cast<char**>(options)); 104 first = FALSE; 105 } 106#endif 107 108 /* 109 * By default LLVM adds a signal handler to output a pretty stack trace. 110 * This signal handler is never removed, causing problems when unloading the 111 * shared object where the gallium driver resides. 112 */ 113 llvm::DisablePrettyStackTrace = true; 114} 115 116 117extern "C" void 118lp_func_delete_body(LLVMValueRef FF) 119{ 120 llvm::Function *func = llvm::unwrap<llvm::Function>(FF); 121 func->deleteBody(); 122} 123 124 125extern "C" 126LLVMValueRef 127lp_build_load_volatile(LLVMBuilderRef B, LLVMValueRef PointerVal, 128 const char *Name) 129{ 130 return llvm::wrap(llvm::unwrap(B)->CreateLoad(llvm::unwrap(PointerVal), true, Name)); 131} 132 133