Bug Summary

File:llvm/lib/Target/AMDGPU/AMDGPUPrintfRuntimeBinding.cpp
Warning:line 257, column 42
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name AMDGPUPrintfRuntimeBinding.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -mframe-pointer=none -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/lib/Target/AMDGPU -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Target/AMDGPU -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/include -I /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/build-llvm/lib/Target/AMDGPU -fdebug-prefix-map=/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-01-13-084841-49055-1 -x c++ /build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Target/AMDGPU/AMDGPUPrintfRuntimeBinding.cpp

/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Target/AMDGPU/AMDGPUPrintfRuntimeBinding.cpp

1//=== AMDGPUPrintfRuntimeBinding.cpp - OpenCL printf implementation -------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8// \file
9//
10// The pass bind printfs to a kernel arg pointer that will be bound to a buffer
11// later by the runtime.
12//
13// This pass traverses the functions in the module and converts
14// each call to printf to a sequence of operations that
15// store the following into the printf buffer:
16// - format string (passed as a module's metadata unique ID)
17// - bitwise copies of printf arguments
18// The backend passes will need to store metadata in the kernel
19//===----------------------------------------------------------------------===//
20
21#include "AMDGPU.h"
22#include "llvm/ADT/SmallString.h"
23#include "llvm/ADT/StringExtras.h"
24#include "llvm/ADT/Triple.h"
25#include "llvm/Analysis/InstructionSimplify.h"
26#include "llvm/Analysis/TargetLibraryInfo.h"
27#include "llvm/CodeGen/Passes.h"
28#include "llvm/IR/Constants.h"
29#include "llvm/IR/DataLayout.h"
30#include "llvm/IR/Dominators.h"
31#include "llvm/IR/GlobalVariable.h"
32#include "llvm/IR/IRBuilder.h"
33#include "llvm/IR/Instructions.h"
34#include "llvm/IR/Module.h"
35#include "llvm/IR/Type.h"
36#include "llvm/InitializePasses.h"
37#include "llvm/Support/CommandLine.h"
38#include "llvm/Support/Debug.h"
39#include "llvm/Support/raw_ostream.h"
40#include "llvm/Transforms/Utils/BasicBlockUtils.h"
41using namespace llvm;
42
43#define DEBUG_TYPE"printfToRuntime" "printfToRuntime"
44#define DWORD_ALIGN4 4
45
46namespace {
47class LLVM_LIBRARY_VISIBILITY__attribute__ ((visibility("hidden"))) AMDGPUPrintfRuntimeBinding final
48 : public ModulePass {
49
50public:
51 static char ID;
52
53 explicit AMDGPUPrintfRuntimeBinding();
54
55private:
56 bool runOnModule(Module &M) override;
57 void getConversionSpecifiers(SmallVectorImpl<char> &OpConvSpecifiers,
58 StringRef fmt, size_t num_ops) const;
59
60 bool shouldPrintAsStr(char Specifier, Type *OpType) const;
61 bool
62 lowerPrintfForGpu(Module &M,
63 function_ref<const TargetLibraryInfo &(Function &)> GetTLI);
64
65 void getAnalysisUsage(AnalysisUsage &AU) const override {
66 AU.addRequired<TargetLibraryInfoWrapperPass>();
67 AU.addRequired<DominatorTreeWrapperPass>();
68 }
69
70 Value *simplify(Instruction *I, const TargetLibraryInfo *TLI) {
71 return SimplifyInstruction(I, {*TD, TLI, DT});
72 }
73
74 const DataLayout *TD;
75 const DominatorTree *DT;
76 SmallVector<CallInst *, 32> Printfs;
77};
78} // namespace
79
80char AMDGPUPrintfRuntimeBinding::ID = 0;
81
82INITIALIZE_PASS_BEGIN(AMDGPUPrintfRuntimeBinding,static void *initializeAMDGPUPrintfRuntimeBindingPassOnce(PassRegistry
&Registry) {
83 "amdgpu-printf-runtime-binding", "AMDGPU Printf lowering",static void *initializeAMDGPUPrintfRuntimeBindingPassOnce(PassRegistry
&Registry) {
84 false, false)static void *initializeAMDGPUPrintfRuntimeBindingPassOnce(PassRegistry
&Registry) {
85INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)initializeTargetLibraryInfoWrapperPassPass(Registry);
86INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)initializeDominatorTreeWrapperPassPass(Registry);
87INITIALIZE_PASS_END(AMDGPUPrintfRuntimeBinding, "amdgpu-printf-runtime-binding",PassInfo *PI = new PassInfo( "AMDGPU Printf lowering", "amdgpu-printf-runtime-binding"
, &AMDGPUPrintfRuntimeBinding::ID, PassInfo::NormalCtor_t
(callDefaultCtor<AMDGPUPrintfRuntimeBinding>), false, false
); Registry.registerPass(*PI, true); return PI; } static llvm
::once_flag InitializeAMDGPUPrintfRuntimeBindingPassFlag; void
llvm::initializeAMDGPUPrintfRuntimeBindingPass(PassRegistry &
Registry) { llvm::call_once(InitializeAMDGPUPrintfRuntimeBindingPassFlag
, initializeAMDGPUPrintfRuntimeBindingPassOnce, std::ref(Registry
)); }
88 "AMDGPU Printf lowering", false, false)PassInfo *PI = new PassInfo( "AMDGPU Printf lowering", "amdgpu-printf-runtime-binding"
, &AMDGPUPrintfRuntimeBinding::ID, PassInfo::NormalCtor_t
(callDefaultCtor<AMDGPUPrintfRuntimeBinding>), false, false
); Registry.registerPass(*PI, true); return PI; } static llvm
::once_flag InitializeAMDGPUPrintfRuntimeBindingPassFlag; void
llvm::initializeAMDGPUPrintfRuntimeBindingPass(PassRegistry &
Registry) { llvm::call_once(InitializeAMDGPUPrintfRuntimeBindingPassFlag
, initializeAMDGPUPrintfRuntimeBindingPassOnce, std::ref(Registry
)); }
89
90char &llvm::AMDGPUPrintfRuntimeBindingID = AMDGPUPrintfRuntimeBinding::ID;
91
92namespace llvm {
93ModulePass *createAMDGPUPrintfRuntimeBinding() {
94 return new AMDGPUPrintfRuntimeBinding();
95}
96} // namespace llvm
97
98AMDGPUPrintfRuntimeBinding::AMDGPUPrintfRuntimeBinding()
99 : ModulePass(ID), TD(nullptr), DT(nullptr) {
100 initializeAMDGPUPrintfRuntimeBindingPass(*PassRegistry::getPassRegistry());
101}
102
103void AMDGPUPrintfRuntimeBinding::getConversionSpecifiers(
104 SmallVectorImpl<char> &OpConvSpecifiers, StringRef Fmt,
105 size_t NumOps) const {
106 // not all format characters are collected.
107 // At this time the format characters of interest
108 // are %p and %s, which use to know if we
109 // are either storing a literal string or a
110 // pointer to the printf buffer.
111 static const char ConvSpecifiers[] = "cdieEfgGaosuxXp";
112 size_t CurFmtSpecifierIdx = 0;
113 size_t PrevFmtSpecifierIdx = 0;
114
115 while ((CurFmtSpecifierIdx = Fmt.find_first_of(
116 ConvSpecifiers, CurFmtSpecifierIdx)) != StringRef::npos) {
117 bool ArgDump = false;
118 StringRef CurFmt = Fmt.substr(PrevFmtSpecifierIdx,
119 CurFmtSpecifierIdx - PrevFmtSpecifierIdx);
120 size_t pTag = CurFmt.find_last_of("%");
121 if (pTag != StringRef::npos) {
122 ArgDump = true;
123 while (pTag && CurFmt[--pTag] == '%') {
124 ArgDump = !ArgDump;
125 }
126 }
127
128 if (ArgDump)
129 OpConvSpecifiers.push_back(Fmt[CurFmtSpecifierIdx]);
130
131 PrevFmtSpecifierIdx = ++CurFmtSpecifierIdx;
132 }
133}
134
135bool AMDGPUPrintfRuntimeBinding::shouldPrintAsStr(char Specifier,
136 Type *OpType) const {
137 if (Specifier != 's')
17
Assuming the condition is false
18
Taking false branch
138 return false;
139 const PointerType *PT = dyn_cast<PointerType>(OpType);
19
Assuming 'OpType' is a 'PointerType'
140 if (!PT
19.1
'PT' is non-null, which participates in a condition later
19.1
'PT' is non-null, which participates in a condition later
|| PT->getAddressSpace() != AMDGPUAS::CONSTANT_ADDRESS)
20
Assuming the condition is false
21
Taking false branch
141 return false;
142 Type *ElemType = PT->getContainedType(0);
143 if (ElemType->getTypeID() != Type::IntegerTyID)
22
Assuming the condition is false
23
Taking false branch
144 return false;
145 IntegerType *ElemIType = cast<IntegerType>(ElemType);
24
'ElemType' is a 'IntegerType'
146 return ElemIType->getBitWidth() == 8;
25
Assuming the condition is true
26
Returning the value 1, which participates in a condition later
147}
148
149bool AMDGPUPrintfRuntimeBinding::lowerPrintfForGpu(
150 Module &M, function_ref<const TargetLibraryInfo &(Function &)> GetTLI) {
151 LLVMContext &Ctx = M.getContext();
152 IRBuilder<> Builder(Ctx);
153 Type *I32Ty = Type::getInt32Ty(Ctx);
154 unsigned UniqID = 0;
155 // NB: This is important for this string size to be divizable by 4
156 const char NonLiteralStr[4] = "???";
157
158 for (auto CI : Printfs) {
1
Assuming '__begin1' is not equal to '__end1'
159 unsigned NumOps = CI->getNumArgOperands();
160
161 SmallString<16> OpConvSpecifiers;
162 Value *Op = CI->getArgOperand(0);
163
164 if (auto LI = dyn_cast<LoadInst>(Op)) {
2
Assuming 'LI' is null
3
Taking false branch
165 Op = LI->getPointerOperand();
166 for (auto Use : Op->users()) {
167 if (auto SI = dyn_cast<StoreInst>(Use)) {
168 Op = SI->getValueOperand();
169 break;
170 }
171 }
172 }
173
174 if (auto I = dyn_cast<Instruction>(Op)) {
4
Assuming 'I' is null
5
Taking false branch
175 Value *Op_simplified = simplify(I, &GetTLI(*I->getFunction()));
176 if (Op_simplified)
177 Op = Op_simplified;
178 }
179
180 ConstantExpr *ConstExpr = dyn_cast<ConstantExpr>(Op);
181
182 if (ConstExpr) {
6
Assuming 'ConstExpr' is non-null
7
Taking true branch
183 GlobalVariable *GVar = dyn_cast<GlobalVariable>(ConstExpr->getOperand(0));
184
185 StringRef Str("unknown");
186 if (GVar && GVar->hasInitializer()) {
8
Assuming 'GVar' is null
187 auto Init = GVar->getInitializer();
188 if (auto CA = dyn_cast<ConstantDataArray>(Init)) {
189 if (CA->isString())
190 Str = CA->getAsCString();
191 } else if (isa<ConstantAggregateZero>(Init)) {
192 Str = "";
193 }
194 //
195 // we need this call to ascertain
196 // that we are printing a string
197 // or a pointer. It takes out the
198 // specifiers and fills up the first
199 // arg
200 getConversionSpecifiers(OpConvSpecifiers, Str, NumOps - 1);
201 }
202 // Add metadata for the string
203 std::string AStreamHolder;
204 raw_string_ostream Sizes(AStreamHolder);
205 int Sum = DWORD_ALIGN4;
206 Sizes << CI->getNumArgOperands() - 1;
207 Sizes << ':';
208 for (unsigned ArgCount = 1; ArgCount < CI->getNumArgOperands() &&
9
Assuming the condition is true
11
Loop condition is true. Entering loop body
209 ArgCount <= OpConvSpecifiers.size();
10
Assuming the condition is true
210 ArgCount++) {
211 Value *Arg = CI->getArgOperand(ArgCount);
212 Type *ArgType = Arg->getType();
213 unsigned ArgSize = TD->getTypeAllocSizeInBits(ArgType);
214 ArgSize = ArgSize / 8;
215 //
216 // ArgSize by design should be a multiple of DWORD_ALIGN,
217 // expand the arguments that do not follow this rule.
218 //
219 if (ArgSize % DWORD_ALIGN4 != 0) {
12
Assuming the condition is false
13
Taking false branch
220 llvm::Type *ResType = llvm::Type::getInt32Ty(Ctx);
221 VectorType *LLVMVecType = llvm::dyn_cast<llvm::VectorType>(ArgType);
222 int NumElem = LLVMVecType ? LLVMVecType->getNumElements() : 1;
223 if (LLVMVecType && NumElem > 1)
224 ResType = llvm::VectorType::get(ResType, NumElem);
225 Builder.SetInsertPoint(CI);
226 Builder.SetCurrentDebugLocation(CI->getDebugLoc());
227 if (OpConvSpecifiers[ArgCount - 1] == 'x' ||
228 OpConvSpecifiers[ArgCount - 1] == 'X' ||
229 OpConvSpecifiers[ArgCount - 1] == 'u' ||
230 OpConvSpecifiers[ArgCount - 1] == 'o')
231 Arg = Builder.CreateZExt(Arg, ResType);
232 else
233 Arg = Builder.CreateSExt(Arg, ResType);
234 ArgType = Arg->getType();
235 ArgSize = TD->getTypeAllocSizeInBits(ArgType);
236 ArgSize = ArgSize / 8;
237 CI->setOperand(ArgCount, Arg);
238 }
239 if (OpConvSpecifiers[ArgCount - 1] == 'f') {
14
Assuming the condition is false
15
Taking false branch
240 ConstantFP *FpCons = dyn_cast<ConstantFP>(Arg);
241 if (FpCons)
242 ArgSize = 4;
243 else {
244 FPExtInst *FpExt = dyn_cast<FPExtInst>(Arg);
245 if (FpExt && FpExt->getType()->isDoubleTy() &&
246 FpExt->getOperand(0)->getType()->isFloatTy())
247 ArgSize = 4;
248 }
249 }
250 if (shouldPrintAsStr(OpConvSpecifiers[ArgCount - 1], ArgType)) {
16
Calling 'AMDGPUPrintfRuntimeBinding::shouldPrintAsStr'
27
Returning from 'AMDGPUPrintfRuntimeBinding::shouldPrintAsStr'
28
Taking true branch
251 if (ConstantExpr *ConstExpr
29.1
'ConstExpr' is non-null
29.1
'ConstExpr' is non-null
= dyn_cast<ConstantExpr>(Arg)) {
29
Assuming 'Arg' is a 'ConstantExpr'
30
Taking true branch
252 GlobalVariable *GV =
253 dyn_cast<GlobalVariable>(ConstExpr->getOperand(0));
254 if (GV && GV->hasInitializer()) {
31
Assuming 'GV' is non-null
32
Calling 'GlobalVariable::hasInitializer'
35
Returning from 'GlobalVariable::hasInitializer'
36
Taking true branch
255 Constant *Init = GV->getInitializer();
256 ConstantDataArray *CA = dyn_cast<ConstantDataArray>(Init);
37
Assuming 'Init' is not a 'ConstantDataArray'
38
'CA' initialized to a null pointer value
257 if (Init->isZeroValue() || CA->isString()) {
39
Assuming the condition is false
40
Called C++ object pointer is null
258 size_t SizeStr = Init->isZeroValue()
259 ? 1
260 : (strlen(CA->getAsCString().data()) + 1);
261 size_t Rem = SizeStr % DWORD_ALIGN4;
262 size_t NSizeStr = 0;
263 LLVM_DEBUG(dbgs() << "Printf string original size = " << SizeStrdo { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf string original size = "
<< SizeStr << '\n'; } } while (false)
264 << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf string original size = "
<< SizeStr << '\n'; } } while (false)
;
265 if (Rem) {
266 NSizeStr = SizeStr + (DWORD_ALIGN4 - Rem);
267 } else {
268 NSizeStr = SizeStr;
269 }
270 ArgSize = NSizeStr;
271 }
272 } else {
273 ArgSize = sizeof(NonLiteralStr);
274 }
275 } else {
276 ArgSize = sizeof(NonLiteralStr);
277 }
278 }
279 LLVM_DEBUG(dbgs() << "Printf ArgSize (in buffer) = " << ArgSizedo { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf ArgSize (in buffer) = "
<< ArgSize << " for type: " << *ArgType <<
'\n'; } } while (false)
280 << " for type: " << *ArgType << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf ArgSize (in buffer) = "
<< ArgSize << " for type: " << *ArgType <<
'\n'; } } while (false)
;
281 Sizes << ArgSize << ':';
282 Sum += ArgSize;
283 }
284 LLVM_DEBUG(dbgs() << "Printf format string in source = " << Str.str()do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf format string in source = "
<< Str.str() << '\n'; } } while (false)
285 << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf format string in source = "
<< Str.str() << '\n'; } } while (false)
;
286 for (size_t I = 0; I < Str.size(); ++I) {
287 // Rest of the C escape sequences (e.g. \') are handled correctly
288 // by the MDParser
289 switch (Str[I]) {
290 case '\a':
291 Sizes << "\\a";
292 break;
293 case '\b':
294 Sizes << "\\b";
295 break;
296 case '\f':
297 Sizes << "\\f";
298 break;
299 case '\n':
300 Sizes << "\\n";
301 break;
302 case '\r':
303 Sizes << "\\r";
304 break;
305 case '\v':
306 Sizes << "\\v";
307 break;
308 case ':':
309 // ':' cannot be scanned by Flex, as it is defined as a delimiter
310 // Replace it with it's octal representation \72
311 Sizes << "\\72";
312 break;
313 default:
314 Sizes << Str[I];
315 break;
316 }
317 }
318
319 // Insert the printf_alloc call
320 Builder.SetInsertPoint(CI);
321 Builder.SetCurrentDebugLocation(CI->getDebugLoc());
322
323 AttributeList Attr = AttributeList::get(Ctx, AttributeList::FunctionIndex,
324 Attribute::NoUnwind);
325
326 Type *SizetTy = Type::getInt32Ty(Ctx);
327
328 Type *Tys_alloc[1] = {SizetTy};
329 Type *I8Ptr = PointerType::get(Type::getInt8Ty(Ctx), 1);
330 FunctionType *FTy_alloc = FunctionType::get(I8Ptr, Tys_alloc, false);
331 FunctionCallee PrintfAllocFn =
332 M.getOrInsertFunction(StringRef("__printf_alloc"), FTy_alloc, Attr);
333
334 LLVM_DEBUG(dbgs() << "Printf metadata = " << Sizes.str() << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "Printf metadata = " <<
Sizes.str() << '\n'; } } while (false)
;
335 std::string fmtstr = itostr(++UniqID) + ":" + Sizes.str().c_str();
336 MDString *fmtStrArray = MDString::get(Ctx, fmtstr);
337
338 // Instead of creating global variables, the
339 // printf format strings are extracted
340 // and passed as metadata. This avoids
341 // polluting llvm's symbol tables in this module.
342 // Metadata is going to be extracted
343 // by the backend passes and inserted
344 // into the OpenCL binary as appropriate.
345 StringRef amd("llvm.printf.fmts");
346 NamedMDNode *metaD = M.getOrInsertNamedMetadata(amd);
347 MDNode *myMD = MDNode::get(Ctx, fmtStrArray);
348 metaD->addOperand(myMD);
349 Value *sumC = ConstantInt::get(SizetTy, Sum, false);
350 SmallVector<Value *, 1> alloc_args;
351 alloc_args.push_back(sumC);
352 CallInst *pcall =
353 CallInst::Create(PrintfAllocFn, alloc_args, "printf_alloc_fn", CI);
354
355 //
356 // Insert code to split basicblock with a
357 // piece of hammock code.
358 // basicblock splits after buffer overflow check
359 //
360 ConstantPointerNull *zeroIntPtr =
361 ConstantPointerNull::get(PointerType::get(Type::getInt8Ty(Ctx), 1));
362 ICmpInst *cmp =
363 dyn_cast<ICmpInst>(Builder.CreateICmpNE(pcall, zeroIntPtr, ""));
364 if (!CI->use_empty()) {
365 Value *result =
366 Builder.CreateSExt(Builder.CreateNot(cmp), I32Ty, "printf_res");
367 CI->replaceAllUsesWith(result);
368 }
369 SplitBlock(CI->getParent(), cmp);
370 Instruction *Brnch =
371 SplitBlockAndInsertIfThen(cmp, cmp->getNextNode(), false);
372
373 Builder.SetInsertPoint(Brnch);
374
375 // store unique printf id in the buffer
376 //
377 SmallVector<Value *, 1> ZeroIdxList;
378 ConstantInt *zeroInt =
379 ConstantInt::get(Ctx, APInt(32, StringRef("0"), 10));
380 ZeroIdxList.push_back(zeroInt);
381
382 GetElementPtrInst *BufferIdx =
383 dyn_cast<GetElementPtrInst>(GetElementPtrInst::Create(
384 nullptr, pcall, ZeroIdxList, "PrintBuffID", Brnch));
385
386 Type *idPointer = PointerType::get(I32Ty, AMDGPUAS::GLOBAL_ADDRESS);
387 Value *id_gep_cast =
388 new BitCastInst(BufferIdx, idPointer, "PrintBuffIdCast", Brnch);
389
390 StoreInst *stbuff =
391 new StoreInst(ConstantInt::get(I32Ty, UniqID), id_gep_cast);
392 stbuff->insertBefore(Brnch); // to Remove unused variable warning
393
394 SmallVector<Value *, 2> FourthIdxList;
395 ConstantInt *fourInt =
396 ConstantInt::get(Ctx, APInt(32, StringRef("4"), 10));
397
398 FourthIdxList.push_back(fourInt); // 1st 4 bytes hold the printf_id
399 // the following GEP is the buffer pointer
400 BufferIdx = cast<GetElementPtrInst>(GetElementPtrInst::Create(
401 nullptr, pcall, FourthIdxList, "PrintBuffGep", Brnch));
402
403 Type *Int32Ty = Type::getInt32Ty(Ctx);
404 Type *Int64Ty = Type::getInt64Ty(Ctx);
405 for (unsigned ArgCount = 1; ArgCount < CI->getNumArgOperands() &&
406 ArgCount <= OpConvSpecifiers.size();
407 ArgCount++) {
408 Value *Arg = CI->getArgOperand(ArgCount);
409 Type *ArgType = Arg->getType();
410 SmallVector<Value *, 32> WhatToStore;
411 if (ArgType->isFPOrFPVectorTy() &&
412 (ArgType->getTypeID() != Type::VectorTyID)) {
413 Type *IType = (ArgType->isFloatTy()) ? Int32Ty : Int64Ty;
414 if (OpConvSpecifiers[ArgCount - 1] == 'f') {
415 ConstantFP *fpCons = dyn_cast<ConstantFP>(Arg);
416 if (fpCons) {
417 APFloat Val(fpCons->getValueAPF());
418 bool Lost = false;
419 Val.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven,
420 &Lost);
421 Arg = ConstantFP::get(Ctx, Val);
422 IType = Int32Ty;
423 } else {
424 FPExtInst *FpExt = dyn_cast<FPExtInst>(Arg);
425 if (FpExt && FpExt->getType()->isDoubleTy() &&
426 FpExt->getOperand(0)->getType()->isFloatTy()) {
427 Arg = FpExt->getOperand(0);
428 IType = Int32Ty;
429 }
430 }
431 }
432 Arg = new BitCastInst(Arg, IType, "PrintArgFP", Brnch);
433 WhatToStore.push_back(Arg);
434 } else if (ArgType->getTypeID() == Type::PointerTyID) {
435 if (shouldPrintAsStr(OpConvSpecifiers[ArgCount - 1], ArgType)) {
436 const char *S = NonLiteralStr;
437 if (ConstantExpr *ConstExpr = dyn_cast<ConstantExpr>(Arg)) {
438 GlobalVariable *GV =
439 dyn_cast<GlobalVariable>(ConstExpr->getOperand(0));
440 if (GV && GV->hasInitializer()) {
441 Constant *Init = GV->getInitializer();
442 ConstantDataArray *CA = dyn_cast<ConstantDataArray>(Init);
443 if (Init->isZeroValue() || CA->isString()) {
444 S = Init->isZeroValue() ? "" : CA->getAsCString().data();
445 }
446 }
447 }
448 size_t SizeStr = strlen(S) + 1;
449 size_t Rem = SizeStr % DWORD_ALIGN4;
450 size_t NSizeStr = 0;
451 if (Rem) {
452 NSizeStr = SizeStr + (DWORD_ALIGN4 - Rem);
453 } else {
454 NSizeStr = SizeStr;
455 }
456 if (S[0]) {
457 char *MyNewStr = new char[NSizeStr]();
458 strcpy(MyNewStr, S);
459 int NumInts = NSizeStr / 4;
460 int CharC = 0;
461 while (NumInts) {
462 int ANum = *(int *)(MyNewStr + CharC);
463 CharC += 4;
464 NumInts--;
465 Value *ANumV = ConstantInt::get(Int32Ty, ANum, false);
466 WhatToStore.push_back(ANumV);
467 }
468 delete[] MyNewStr;
469 } else {
470 // Empty string, give a hint to RT it is no NULL
471 Value *ANumV = ConstantInt::get(Int32Ty, 0xFFFFFF00, false);
472 WhatToStore.push_back(ANumV);
473 }
474 } else {
475 uint64_t Size = TD->getTypeAllocSizeInBits(ArgType);
476 assert((Size == 32 || Size == 64) && "unsupported size")(((Size == 32 || Size == 64) && "unsupported size") ?
static_cast<void> (0) : __assert_fail ("(Size == 32 || Size == 64) && \"unsupported size\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Target/AMDGPU/AMDGPUPrintfRuntimeBinding.cpp"
, 476, __PRETTY_FUNCTION__))
;
477 Type *DstType = (Size == 32) ? Int32Ty : Int64Ty;
478 Arg = new PtrToIntInst(Arg, DstType, "PrintArgPtr", Brnch);
479 WhatToStore.push_back(Arg);
480 }
481 } else if (ArgType->getTypeID() == Type::VectorTyID) {
482 Type *IType = NULL__null;
483 uint32_t EleCount = cast<VectorType>(ArgType)->getNumElements();
484 uint32_t EleSize = ArgType->getScalarSizeInBits();
485 uint32_t TotalSize = EleCount * EleSize;
486 if (EleCount == 3) {
487 IntegerType *Int32Ty = Type::getInt32Ty(ArgType->getContext());
488 Constant *Indices[4] = {
489 ConstantInt::get(Int32Ty, 0), ConstantInt::get(Int32Ty, 1),
490 ConstantInt::get(Int32Ty, 2), ConstantInt::get(Int32Ty, 2)};
491 Constant *Mask = ConstantVector::get(Indices);
492 ShuffleVectorInst *Shuffle = new ShuffleVectorInst(Arg, Arg, Mask);
493 Shuffle->insertBefore(Brnch);
494 Arg = Shuffle;
495 ArgType = Arg->getType();
496 TotalSize += EleSize;
497 }
498 switch (EleSize) {
499 default:
500 EleCount = TotalSize / 64;
501 IType = dyn_cast<Type>(Type::getInt64Ty(ArgType->getContext()));
502 break;
503 case 8:
504 if (EleCount >= 8) {
505 EleCount = TotalSize / 64;
506 IType = dyn_cast<Type>(Type::getInt64Ty(ArgType->getContext()));
507 } else if (EleCount >= 3) {
508 EleCount = 1;
509 IType = dyn_cast<Type>(Type::getInt32Ty(ArgType->getContext()));
510 } else {
511 EleCount = 1;
512 IType = dyn_cast<Type>(Type::getInt16Ty(ArgType->getContext()));
513 }
514 break;
515 case 16:
516 if (EleCount >= 3) {
517 EleCount = TotalSize / 64;
518 IType = dyn_cast<Type>(Type::getInt64Ty(ArgType->getContext()));
519 } else {
520 EleCount = 1;
521 IType = dyn_cast<Type>(Type::getInt32Ty(ArgType->getContext()));
522 }
523 break;
524 }
525 if (EleCount > 1) {
526 IType = dyn_cast<Type>(VectorType::get(IType, EleCount));
527 }
528 Arg = new BitCastInst(Arg, IType, "PrintArgVect", Brnch);
529 WhatToStore.push_back(Arg);
530 } else {
531 WhatToStore.push_back(Arg);
532 }
533 for (unsigned I = 0, E = WhatToStore.size(); I != E; ++I) {
534 Value *TheBtCast = WhatToStore[I];
535 unsigned ArgSize =
536 TD->getTypeAllocSizeInBits(TheBtCast->getType()) / 8;
537 SmallVector<Value *, 1> BuffOffset;
538 BuffOffset.push_back(ConstantInt::get(I32Ty, ArgSize));
539
540 Type *ArgPointer = PointerType::get(TheBtCast->getType(), 1);
541 Value *CastedGEP =
542 new BitCastInst(BufferIdx, ArgPointer, "PrintBuffPtrCast", Brnch);
543 StoreInst *StBuff = new StoreInst(TheBtCast, CastedGEP, Brnch);
544 LLVM_DEBUG(dbgs() << "inserting store to printf buffer:\n"do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "inserting store to printf buffer:\n"
<< *StBuff << '\n'; } } while (false)
545 << *StBuff << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "inserting store to printf buffer:\n"
<< *StBuff << '\n'; } } while (false)
;
546 (void)StBuff;
547 if (I + 1 == E && ArgCount + 1 == CI->getNumArgOperands())
548 break;
549 BufferIdx = dyn_cast<GetElementPtrInst>(GetElementPtrInst::Create(
550 nullptr, BufferIdx, BuffOffset, "PrintBuffNextPtr", Brnch));
551 LLVM_DEBUG(dbgs() << "inserting gep to the printf buffer:\n"do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "inserting gep to the printf buffer:\n"
<< *BufferIdx << '\n'; } } while (false)
552 << *BufferIdx << '\n')do { if (::llvm::DebugFlag && ::llvm::isCurrentDebugType
("printfToRuntime")) { dbgs() << "inserting gep to the printf buffer:\n"
<< *BufferIdx << '\n'; } } while (false)
;
553 }
554 }
555 }
556 }
557
558 // erase the printf calls
559 for (auto CI : Printfs)
560 CI->eraseFromParent();
561
562 Printfs.clear();
563 return true;
564}
565
566bool AMDGPUPrintfRuntimeBinding::runOnModule(Module &M) {
567 Triple TT(M.getTargetTriple());
568 if (TT.getArch() == Triple::r600)
569 return false;
570
571 auto PrintfFunction = M.getFunction("printf");
572 if (!PrintfFunction)
573 return false;
574
575 for (auto &U : PrintfFunction->uses()) {
576 if (auto *CI = dyn_cast<CallInst>(U.getUser())) {
577 if (CI->isCallee(&U))
578 Printfs.push_back(CI);
579 }
580 }
581
582 if (Printfs.empty())
583 return false;
584
585 if (auto HostcallFunction = M.getFunction("__ockl_hostcall_internal")) {
586 for (auto &U : HostcallFunction->uses()) {
587 if (auto *CI = dyn_cast<CallInst>(U.getUser())) {
588 M.getContext().emitError(
589 CI, "Cannot use both printf and hostcall in the same module");
590 }
591 }
592 }
593
594 TD = &M.getDataLayout();
595 auto DTWP = getAnalysisIfAvailable<DominatorTreeWrapperPass>();
596 DT = DTWP ? &DTWP->getDomTree() : nullptr;
597 auto GetTLI = [this](Function &F) -> TargetLibraryInfo & {
598 return this->getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(F);
599 };
600
601 return lowerPrintfForGpu(M, GetTLI);
602}

/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h

1//===-- llvm/GlobalVariable.h - GlobalVariable class ------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains the declaration of the GlobalVariable class, which
10// represents a single global variable (or constant) in the VM.
11//
12// Global variables are constant pointers that refer to hunks of space that are
13// allocated by either the VM, or by the linker in a static compiler. A global
14// variable may have an initial value, which is copied into the executables .data
15// area. Global Constants are required to have initializers.
16//
17//===----------------------------------------------------------------------===//
18
19#ifndef LLVM_IR_GLOBALVARIABLE_H
20#define LLVM_IR_GLOBALVARIABLE_H
21
22#include "llvm/ADT/PointerUnion.h"
23#include "llvm/ADT/Twine.h"
24#include "llvm/ADT/ilist_node.h"
25#include "llvm/IR/Attributes.h"
26#include "llvm/IR/GlobalObject.h"
27#include "llvm/IR/OperandTraits.h"
28#include "llvm/IR/Value.h"
29#include <cassert>
30#include <cstddef>
31
32namespace llvm {
33
34class Constant;
35class Module;
36
37template <typename ValueSubClass> class SymbolTableListTraits;
38class DIGlobalVariable;
39class DIGlobalVariableExpression;
40
41class GlobalVariable : public GlobalObject, public ilist_node<GlobalVariable> {
42 friend class SymbolTableListTraits<GlobalVariable>;
43
44 AttributeSet Attrs;
45 bool isConstantGlobal : 1; // Is this a global constant?
46 bool isExternallyInitializedConstant : 1; // Is this a global whose value
47 // can change from its initial
48 // value before global
49 // initializers are run?
50
51public:
52 /// GlobalVariable ctor - If a parent module is specified, the global is
53 /// automatically inserted into the end of the specified modules global list.
54 GlobalVariable(Type *Ty, bool isConstant, LinkageTypes Linkage,
55 Constant *Initializer = nullptr, const Twine &Name = "",
56 ThreadLocalMode = NotThreadLocal, unsigned AddressSpace = 0,
57 bool isExternallyInitialized = false);
58 /// GlobalVariable ctor - This creates a global and inserts it before the
59 /// specified other global.
60 GlobalVariable(Module &M, Type *Ty, bool isConstant,
61 LinkageTypes Linkage, Constant *Initializer,
62 const Twine &Name = "", GlobalVariable *InsertBefore = nullptr,
63 ThreadLocalMode = NotThreadLocal, unsigned AddressSpace = 0,
64 bool isExternallyInitialized = false);
65 GlobalVariable(const GlobalVariable &) = delete;
66 GlobalVariable &operator=(const GlobalVariable &) = delete;
67
68 ~GlobalVariable() {
69 dropAllReferences();
70 }
71
72 // allocate space for exactly one operand
73 void *operator new(size_t s) {
74 return User::operator new(s, 1);
75 }
76
77 // delete space for exactly one operand as created in the corresponding new operator
78 void operator delete(void *ptr){
79 assert(ptr != nullptr && "must not be nullptr")((ptr != nullptr && "must not be nullptr") ? static_cast
<void> (0) : __assert_fail ("ptr != nullptr && \"must not be nullptr\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h"
, 79, __PRETTY_FUNCTION__))
;
80 User *Obj = static_cast<User *>(ptr);
81 // Number of operands can be set to 0 after construction and initialization. Make sure
82 // that number of operands is reset to 1, as this is needed in User::operator delete
83 Obj->setGlobalVariableNumOperands(1);
84 User::operator delete(Obj);
85 }
86
87 /// Provide fast operand accessors
88 DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value)public: inline Value *getOperand(unsigned) const; inline void
setOperand(unsigned, Value*); inline op_iterator op_begin();
inline const_op_iterator op_begin() const; inline op_iterator
op_end(); inline const_op_iterator op_end() const; protected
: template <int> inline Use &Op(); template <int
> inline const Use &Op() const; public: inline unsigned
getNumOperands() const
;
89
90 /// Definitions have initializers, declarations don't.
91 ///
92 inline bool hasInitializer() const { return !isDeclaration(); }
33
Assuming the condition is true
34
Returning the value 1, which participates in a condition later
93
94 /// hasDefinitiveInitializer - Whether the global variable has an initializer,
95 /// and any other instances of the global (this can happen due to weak
96 /// linkage) are guaranteed to have the same initializer.
97 ///
98 /// Note that if you want to transform a global, you must use
99 /// hasUniqueInitializer() instead, because of the *_odr linkage type.
100 ///
101 /// Example:
102 ///
103 /// @a = global SomeType* null - Initializer is both definitive and unique.
104 ///
105 /// @b = global weak SomeType* null - Initializer is neither definitive nor
106 /// unique.
107 ///
108 /// @c = global weak_odr SomeType* null - Initializer is definitive, but not
109 /// unique.
110 inline bool hasDefinitiveInitializer() const {
111 return hasInitializer() &&
112 // The initializer of a global variable may change to something arbitrary
113 // at link time.
114 !isInterposable() &&
115 // The initializer of a global variable with the externally_initialized
116 // marker may change at runtime before C++ initializers are evaluated.
117 !isExternallyInitialized();
118 }
119
120 /// hasUniqueInitializer - Whether the global variable has an initializer, and
121 /// any changes made to the initializer will turn up in the final executable.
122 inline bool hasUniqueInitializer() const {
123 return
124 // We need to be sure this is the definition that will actually be used
125 isStrongDefinitionForLinker() &&
126 // It is not safe to modify initializers of global variables with the
127 // external_initializer marker since the value may be changed at runtime
128 // before C++ initializers are evaluated.
129 !isExternallyInitialized();
130 }
131
132 /// getInitializer - Return the initializer for this global variable. It is
133 /// illegal to call this method if the global is external, because we cannot
134 /// tell what the value is initialized to!
135 ///
136 inline const Constant *getInitializer() const {
137 assert(hasInitializer() && "GV doesn't have initializer!")((hasInitializer() && "GV doesn't have initializer!")
? static_cast<void> (0) : __assert_fail ("hasInitializer() && \"GV doesn't have initializer!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h"
, 137, __PRETTY_FUNCTION__))
;
138 return static_cast<Constant*>(Op<0>().get());
139 }
140 inline Constant *getInitializer() {
141 assert(hasInitializer() && "GV doesn't have initializer!")((hasInitializer() && "GV doesn't have initializer!")
? static_cast<void> (0) : __assert_fail ("hasInitializer() && \"GV doesn't have initializer!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h"
, 141, __PRETTY_FUNCTION__))
;
142 return static_cast<Constant*>(Op<0>().get());
143 }
144 /// setInitializer - Sets the initializer for this global variable, removing
145 /// any existing initializer if InitVal==NULL. If this GV has type T*, the
146 /// initializer must have type T.
147 void setInitializer(Constant *InitVal);
148
149 /// If the value is a global constant, its value is immutable throughout the
150 /// runtime execution of the program. Assigning a value into the constant
151 /// leads to undefined behavior.
152 ///
153 bool isConstant() const { return isConstantGlobal; }
154 void setConstant(bool Val) { isConstantGlobal = Val; }
155
156 bool isExternallyInitialized() const {
157 return isExternallyInitializedConstant;
158 }
159 void setExternallyInitialized(bool Val) {
160 isExternallyInitializedConstant = Val;
161 }
162
163 /// copyAttributesFrom - copy all additional attributes (those not needed to
164 /// create a GlobalVariable) from the GlobalVariable Src to this one.
165 void copyAttributesFrom(const GlobalVariable *Src);
166
167 /// removeFromParent - This method unlinks 'this' from the containing module,
168 /// but does not delete it.
169 ///
170 void removeFromParent();
171
172 /// eraseFromParent - This method unlinks 'this' from the containing module
173 /// and deletes it.
174 ///
175 void eraseFromParent();
176
177 /// Drop all references in preparation to destroy the GlobalVariable. This
178 /// drops not only the reference to the initializer but also to any metadata.
179 void dropAllReferences();
180
181 /// Attach a DIGlobalVariableExpression.
182 void addDebugInfo(DIGlobalVariableExpression *GV);
183
184 /// Fill the vector with all debug info attachements.
185 void getDebugInfo(SmallVectorImpl<DIGlobalVariableExpression *> &GVs) const;
186
187 /// Add attribute to this global.
188 void addAttribute(Attribute::AttrKind Kind) {
189 Attrs = Attrs.addAttribute(getContext(), Kind);
190 }
191
192 /// Add attribute to this global.
193 void addAttribute(StringRef Kind, StringRef Val = StringRef()) {
194 Attrs = Attrs.addAttribute(getContext(), Kind, Val);
195 }
196
197 /// Return true if the attribute exists.
198 bool hasAttribute(Attribute::AttrKind Kind) const {
199 return Attrs.hasAttribute(Kind);
200 }
201
202 /// Return true if the attribute exists.
203 bool hasAttribute(StringRef Kind) const {
204 return Attrs.hasAttribute(Kind);
205 }
206
207 /// Return true if any attributes exist.
208 bool hasAttributes() const {
209 return Attrs.hasAttributes();
210 }
211
212 /// Return the attribute object.
213 Attribute getAttribute(Attribute::AttrKind Kind) const {
214 return Attrs.getAttribute(Kind);
215 }
216
217 /// Return the attribute object.
218 Attribute getAttribute(StringRef Kind) const {
219 return Attrs.getAttribute(Kind);
220 }
221
222 /// Return the attribute set for this global
223 AttributeSet getAttributes() const {
224 return Attrs;
225 }
226
227 /// Return attribute set as list with index.
228 /// FIXME: This may not be required once ValueEnumerators
229 /// in bitcode-writer can enumerate attribute-set.
230 AttributeList getAttributesAsList(unsigned index) const {
231 if (!hasAttributes())
232 return AttributeList();
233 std::pair<unsigned, AttributeSet> AS[1] = {{index, Attrs}};
234 return AttributeList::get(getContext(), AS);
235 }
236
237 /// Set attribute list for this global
238 void setAttributes(AttributeSet A) {
239 Attrs = A;
240 }
241
242 /// Check if section name is present
243 bool hasImplicitSection() const {
244 return getAttributes().hasAttribute("bss-section") ||
245 getAttributes().hasAttribute("data-section") ||
246 getAttributes().hasAttribute("relro-section") ||
247 getAttributes().hasAttribute("rodata-section");
248 }
249
250 // Methods for support type inquiry through isa, cast, and dyn_cast:
251 static bool classof(const Value *V) {
252 return V->getValueID() == Value::GlobalVariableVal;
253 }
254};
255
256template <>
257struct OperandTraits<GlobalVariable> :
258 public OptionalOperandTraits<GlobalVariable> {
259};
260
261DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalVariable, Value)GlobalVariable::op_iterator GlobalVariable::op_begin() { return
OperandTraits<GlobalVariable>::op_begin(this); } GlobalVariable
::const_op_iterator GlobalVariable::op_begin() const { return
OperandTraits<GlobalVariable>::op_begin(const_cast<
GlobalVariable*>(this)); } GlobalVariable::op_iterator GlobalVariable
::op_end() { return OperandTraits<GlobalVariable>::op_end
(this); } GlobalVariable::const_op_iterator GlobalVariable::op_end
() const { return OperandTraits<GlobalVariable>::op_end
(const_cast<GlobalVariable*>(this)); } Value *GlobalVariable
::getOperand(unsigned i_nocapture) const { ((i_nocapture <
OperandTraits<GlobalVariable>::operands(this) &&
"getOperand() out of range!") ? static_cast<void> (0) :
__assert_fail ("i_nocapture < OperandTraits<GlobalVariable>::operands(this) && \"getOperand() out of range!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h"
, 261, __PRETTY_FUNCTION__)); return cast_or_null<Value>
( OperandTraits<GlobalVariable>::op_begin(const_cast<
GlobalVariable*>(this))[i_nocapture].get()); } void GlobalVariable
::setOperand(unsigned i_nocapture, Value *Val_nocapture) { ((
i_nocapture < OperandTraits<GlobalVariable>::operands
(this) && "setOperand() out of range!") ? static_cast
<void> (0) : __assert_fail ("i_nocapture < OperandTraits<GlobalVariable>::operands(this) && \"setOperand() out of range!\""
, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/IR/GlobalVariable.h"
, 261, __PRETTY_FUNCTION__)); OperandTraits<GlobalVariable
>::op_begin(this)[i_nocapture] = Val_nocapture; } unsigned
GlobalVariable::getNumOperands() const { return OperandTraits
<GlobalVariable>::operands(this); } template <int Idx_nocapture
> Use &GlobalVariable::Op() { return this->OpFrom<
Idx_nocapture>(this); } template <int Idx_nocapture>
const Use &GlobalVariable::Op() const { return this->
OpFrom<Idx_nocapture>(this); }
262
263} // end namespace llvm
264
265#endif // LLVM_IR_GLOBALVARIABLE_H