2010-05-08 23:23:41 +01:00
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/**************************************************************************
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*
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* Copyright 2010 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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**************************************************************************/
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#ifndef __STDC_LIMIT_MACROS
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#define __STDC_LIMIT_MACROS
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#endif
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#ifndef __STDC_CONSTANT_MACROS
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#define __STDC_CONSTANT_MACROS
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#endif
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2010-06-03 14:21:25 +01:00
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#include <llvm-c/Core.h>
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#include <llvm-c/ExecutionEngine.h>
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2010-06-13 13:13:11 +01:00
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#include <llvm/Target/TargetOptions.h>
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2010-06-03 14:21:25 +01:00
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#include <llvm/ExecutionEngine/ExecutionEngine.h>
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#include <llvm/ExecutionEngine/JITEventListener.h>
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2010-07-22 18:37:46 +01:00
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#include <llvm/Support/CommandLine.h>
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2010-08-29 12:05:36 +01:00
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#include <llvm/Support/PrettyStackTrace.h>
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2010-05-08 23:23:41 +01:00
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2010-05-10 08:24:23 +01:00
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#include "pipe/p_config.h"
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2010-05-08 23:23:41 +01:00
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#include "util/u_debug.h"
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2010-06-03 14:21:25 +01:00
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/**
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* Register the engine with oprofile.
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*
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* This allows to see the LLVM IR function names in oprofile output.
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*
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* To actually work LLVM needs to be built with the --with-oprofile configure
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* option.
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*
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* Also a oprofile:oprofile user:group is necessary. Which is not created by
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* default on some distributions.
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*/
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extern "C" void
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lp_register_oprofile_jit_event_listener(LLVMExecutionEngineRef EE)
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{
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llvm::unwrap(EE)->RegisterJITEventListener(llvm::createOProfileJITEventListener());
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}
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2010-06-13 13:13:11 +01:00
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extern "C" void
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lp_set_target_options(void)
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{
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#if defined(DEBUG)
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#if HAVE_LLVM >= 0x0207
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llvm::JITEmitDebugInfo = true;
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#endif
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#endif
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2011-05-18 18:00:55 +01:00
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/*
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* LLVM revision 123367 switched the default stack alignment to 16 bytes on
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* Linux (and several other Unices in later revisions), to match recent gcc
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* versions.
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*
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* However our drivers can be loaded by old binary applications, still
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* maintaining a 4 bytes stack alignment. Therefore we must tell LLVM here
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* to only assume a 4 bytes alignment for backwards compatibility.
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*/
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#if defined(PIPE_ARCH_X86)
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2011-06-24 04:48:05 +01:00
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#if HAVE_LLVM >= 0x0300
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llvm::StackAlignmentOverride = 4;
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#else
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2011-05-18 18:00:55 +01:00
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llvm::StackAlignment = 4;
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#endif
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2011-06-24 04:48:05 +01:00
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#endif
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2011-05-18 18:00:55 +01:00
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2010-06-13 13:13:11 +01:00
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#if defined(DEBUG) || defined(PROFILE)
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llvm::NoFramePointerElim = true;
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#endif
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llvm::NoExcessFPPrecision = false;
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/* XXX: Investigate this */
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#if 0
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llvm::UnsafeFPMath = true;
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#endif
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2010-07-22 18:37:46 +01:00
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2010-12-23 03:44:00 +00:00
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#if HAVE_LLVM < 0x0209
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2010-07-22 18:37:46 +01:00
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/*
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* LLVM will generate MMX instructions for vectors <= 64 bits, leading to
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* innefficient code, and in 32bit systems, to the corruption of the FPU
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* stack given that it expects the user to generate the EMMS instructions.
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*
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* See also:
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* - http://llvm.org/bugs/show_bug.cgi?id=3287
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* - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/
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2011-05-20 11:54:18 +01:00
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*
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* The -disable-mmx global option can be specified only once since we
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* dynamically link against LLVM it will reside in a separate shared object,
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* which may or not be delete when this shared object is, so we use the
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* llvm::DisablePrettyStackTrace variable (which we set below and should
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* reside in the same shared library) to determine whether the -disable-mmx
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* option has been set or not.
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*
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* Thankfully this ugly hack is not necessary on LLVM 2.9 onwards.
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2010-07-22 18:37:46 +01:00
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*/
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2011-05-20 11:54:18 +01:00
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if (!llvm::DisablePrettyStackTrace) {
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static boolean first = TRUE;
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2010-07-22 18:37:46 +01:00
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static const char* options[] = {
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"prog",
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"-disable-mmx"
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};
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2011-05-20 11:54:18 +01:00
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assert(first);
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2010-07-22 18:37:46 +01:00
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llvm::cl::ParseCommandLineOptions(2, const_cast<char**>(options));
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first = FALSE;
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}
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2010-12-23 03:44:00 +00:00
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#endif
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2010-08-29 12:05:36 +01:00
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/*
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* By default LLVM adds a signal handler to output a pretty stack trace.
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* This signal handler is never removed, causing problems when unloading the
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* shared object where the gallium driver resides.
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*/
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llvm::DisablePrettyStackTrace = true;
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2010-06-13 13:13:11 +01:00
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}
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2010-07-27 17:26:54 +01:00
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extern "C" void
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lp_func_delete_body(LLVMValueRef FF)
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{
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llvm::Function *func = llvm::unwrap<llvm::Function>(FF);
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func->deleteBody();
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}
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2010-10-15 18:55:21 +01:00
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extern "C"
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LLVMValueRef
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lp_build_load_volatile(LLVMBuilderRef B, LLVMValueRef PointerVal,
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const char *Name)
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{
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return llvm::wrap(llvm::unwrap(B)->CreateLoad(llvm::unwrap(PointerVal), true, Name));
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}
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