1 /**************************************************************************
3 * Copyright 2010 VMware, Inc.
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:
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.
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
26 **************************************************************************/
29 #ifndef __STDC_LIMIT_MACROS
30 #define __STDC_LIMIT_MACROS
33 #ifndef __STDC_CONSTANT_MACROS
34 #define __STDC_CONSTANT_MACROS
39 #include <llvm-c/Core.h>
40 #include <llvm-c/ExecutionEngine.h>
41 #include <llvm/Target/TargetOptions.h>
42 #include <llvm/ExecutionEngine/ExecutionEngine.h>
43 #include <llvm/ExecutionEngine/JITEventListener.h>
44 #include <llvm/Support/CommandLine.h>
45 #include <llvm/Support/PrettyStackTrace.h>
47 #include "pipe/p_config.h"
48 #include "util/u_debug.h"
52 * Register the engine with oprofile.
54 * This allows to see the LLVM IR function names in oprofile output.
56 * To actually work LLVM needs to be built with the --with-oprofile configure
59 * Also a oprofile:oprofile user:group is necessary. Which is not created by
60 * default on some distributions.
63 lp_register_oprofile_jit_event_listener(LLVMExecutionEngineRef EE
)
65 llvm::unwrap(EE
)->RegisterJITEventListener(llvm::createOProfileJITEventListener());
70 lp_set_target_options(void)
72 #if HAVE_LLVM <= 0x0300
74 #if HAVE_LLVM >= 0x0207
75 llvm::JITEmitDebugInfo
= true;
80 * LLVM revision 123367 switched the default stack alignment to 16 bytes on
81 * Linux (and several other Unices in later revisions), to match recent gcc
84 * However our drivers can be loaded by old binary applications, still
85 * maintaining a 4 bytes stack alignment. Therefore we must tell LLVM here
86 * to only assume a 4 bytes alignment for backwards compatibility.
88 #if defined(PIPE_ARCH_X86)
89 #if HAVE_LLVM >= 0x0300
90 llvm::StackAlignmentOverride
= 4;
92 llvm::StackAlignment
= 4;
96 #if defined(DEBUG) || defined(PROFILE)
97 llvm::NoFramePointerElim
= true;
100 llvm::NoExcessFPPrecision
= false;
102 /* XXX: Investigate this */
104 llvm::UnsafeFPMath
= true;
106 #endif /* HAVE_LLVM <= 0x0300 */
108 #if HAVE_LLVM < 0x0209
110 * LLVM will generate MMX instructions for vectors <= 64 bits, leading to
111 * innefficient code, and in 32bit systems, to the corruption of the FPU
112 * stack given that it expects the user to generate the EMMS instructions.
115 * - http://llvm.org/bugs/show_bug.cgi?id=3287
116 * - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/
118 * The -disable-mmx global option can be specified only once since we
119 * dynamically link against LLVM it will reside in a separate shared object,
120 * which may or not be delete when this shared object is, so we use the
121 * llvm::DisablePrettyStackTrace variable (which we set below and should
122 * reside in the same shared library) to determine whether the -disable-mmx
123 * option has been set or not.
125 * Thankfully this ugly hack is not necessary on LLVM 2.9 onwards.
127 if (!llvm::DisablePrettyStackTrace
) {
128 static boolean first
= TRUE
;
129 static const char* options
[] = {
134 llvm::cl::ParseCommandLineOptions(2, const_cast<char**>(options
));
140 * By default LLVM adds a signal handler to output a pretty stack trace.
141 * This signal handler is never removed, causing problems when unloading the
142 * shared object where the gallium driver resides.
144 llvm::DisablePrettyStackTrace
= true;
149 lp_func_delete_body(LLVMValueRef FF
)
151 llvm::Function
*func
= llvm::unwrap
<llvm::Function
>(FF
);
158 lp_build_load_volatile(LLVMBuilderRef B
, LLVMValueRef PointerVal
,
161 return llvm::wrap(llvm::unwrap(B
)->CreateLoad(llvm::unwrap(PointerVal
), true, Name
));