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,
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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,
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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 #if HAVE_LLVM >= 0x0301
66 llvm::unwrap(EE
)->RegisterJITEventListener(llvm::JITEventListener::createOProfileJITEventListener());
68 llvm::unwrap(EE
)->RegisterJITEventListener(llvm::createOProfileJITEventListener());
74 lp_set_target_options(void)
76 #if HAVE_LLVM <= 0x0300
78 #if HAVE_LLVM >= 0x0207
79 llvm::JITEmitDebugInfo
= true;
84 * LLVM revision 123367 switched the default stack alignment to 16 bytes on
85 * Linux (and several other Unices in later revisions), to match recent gcc
88 * However our drivers can be loaded by old binary applications, still
89 * maintaining a 4 bytes stack alignment. Therefore we must tell LLVM here
90 * to only assume a 4 bytes alignment for backwards compatibility.
92 #if defined(PIPE_ARCH_X86)
93 #if HAVE_LLVM >= 0x0300
94 llvm::StackAlignmentOverride
= 4;
96 llvm::StackAlignment
= 4;
100 #if defined(DEBUG) || defined(PROFILE)
101 llvm::NoFramePointerElim
= true;
104 llvm::NoExcessFPPrecision
= false;
106 /* XXX: Investigate this */
108 llvm::UnsafeFPMath
= true;
110 #endif /* HAVE_LLVM <= 0x0300 */
112 #if HAVE_LLVM < 0x0209
114 * LLVM will generate MMX instructions for vectors <= 64 bits, leading to
115 * innefficient code, and in 32bit systems, to the corruption of the FPU
116 * stack given that it expects the user to generate the EMMS instructions.
119 * - http://llvm.org/bugs/show_bug.cgi?id=3287
120 * - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/
122 * The -disable-mmx global option can be specified only once since we
123 * dynamically link against LLVM it will reside in a separate shared object,
124 * which may or not be delete when this shared object is, so we use the
125 * llvm::DisablePrettyStackTrace variable (which we set below and should
126 * reside in the same shared library) to determine whether the -disable-mmx
127 * option has been set or not.
129 * Thankfully this ugly hack is not necessary on LLVM 2.9 onwards.
131 if (!llvm::DisablePrettyStackTrace
) {
132 static boolean first
= TRUE
;
133 static const char* options
[] = {
138 llvm::cl::ParseCommandLineOptions(2, const_cast<char**>(options
));
144 * By default LLVM adds a signal handler to output a pretty stack trace.
145 * This signal handler is never removed, causing problems when unloading the
146 * shared object where the gallium driver resides.
148 llvm::DisablePrettyStackTrace
= true;
153 lp_func_delete_body(LLVMValueRef FF
)
155 llvm::Function
*func
= llvm::unwrap
<llvm::Function
>(FF
);
162 lp_build_load_volatile(LLVMBuilderRef B
, LLVMValueRef PointerVal
,
165 return llvm::wrap(llvm::unwrap(B
)->CreateLoad(llvm::unwrap(PointerVal
), true, Name
));
170 lp_set_load_alignment(LLVMValueRef Inst
,
173 llvm::unwrap
<llvm::LoadInst
>(Inst
)->setAlignment(Align
);
178 lp_set_store_alignment(LLVMValueRef Inst
,
181 llvm::unwrap
<llvm::StoreInst
>(Inst
)->setAlignment(Align
);