1 //===- llvm-stress.cpp - Generate random LL files to stress-test LLVM -----===//
9 // This program is a utility that generates random .ll files to stress-test
82 /// A utility class to provide a pseudo-random number generator which is
86 class Random {  class
89   Random(unsigned _seed):Seed(_seed) {}  in Random()  function in llvm::__anone1ed83310111::Random
91   /// Return a random integer, up to a
96     // Only lowest 19 bits are random-ish.  in Rand()
100   /// Return a random 64 bit integer.
114   /// Make this like a C++11 random device
122     assert(Val <= max() && "Random value out of range");  in operator ()()
152 /// modifying and adding new random instructions.
159   Modifier(BasicBlock *Block, PieceTable *PT, Random *R)  in Modifier()
206   /// Return a random integer.
211   /// Return a random value from the list of known values.
230   /// Return a random value with a known type.
261   /// Return a random value of any pointer type.
272   /// Return a random value of any vector type.
283   /// Pick a random type.
288   /// Pick a random pointer type.
294   /// Pick a random vector type.
310     // Pick a random vector width in the range 2**0 to 2**4.  in pickVectorType()
317   /// Pick a random scalar type.
328   /// Random number generator
329   Random *Ran;
338   LoadModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in LoadModifier()
351   StoreModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in StoreModifier()
370   BinModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in BinModifier()
414   ConstModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in ConstModifier()
431       // Generate 128 random bits, the size of the (currently)  in Act()
465   AllocaModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in AllocaModifier()
477   ExtractElementModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in ExtractElementModifier()
491   ShuffModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in ShuffModifier()
523   InsertElementModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in InsertElementModifier()
539   CastModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in CastModifier()
617   SelectModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in SelectModifier()
640   CmpModifier(BasicBlock *BB, PieceTable *PT, Random *R)  in CmpModifier()
670 static void FillFunction(Function *F, Random &R) {  in FillFunction()
682   // List of modifiers which add new random instructions.  in FillFunction()
695   // Generate the random instructions  in FillFunction()
706 static void IntroduceControlFlow(Function *F, Random &R) {  in IntroduceControlFlow()
741   Random R(SeedCL);  in main()
742   // Generate lots of random instructions inside a single basic block.  in main()