search for: createloopunrollpass

...inner loops fully unrolled. To inspect further, I added the following to the PassManagerBuilder.cpp to run some canonicalization routines and redo unrolling again. I have set partial unrolling on + have a huge threshold + allows expensive loop trip counts. Still it didn't unroll by 2. MPM.add(createLoopUnrollPass()); MPM.add(createCFGSimplificationPass()); MPM.add(createLoopSimplifyPass()); MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1)); MPM.add(createLCSSAPass()); MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars MPM.add(createLoopUnrollPass()); Digging deeper I found, tha...

...> To inspect further, I added the following to the PassManagerBuilder.cpp to > run some canonicalization routines and redo unrolling again. I have set > partial unrolling on + have a huge threshold + allows expensive loop trip > counts. Still it didn't unroll by 2. > > MPM.add(createLoopUnrollPass()); > > MPM.add(createCFGSimplificationPass()); > > MPM.add(createLoopSimplifyPass()); > > MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1)); > > MPM.add(createLCSSAPass()); > > MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars > > MPM.add(...

...rrent2 = (*CurFunc2); cerr << "Dead Store Eliminations" << std::endl; DeadStoreElim = createDeadStoreEliminationPass(); DeadStoreElim->runOnFunction(Current1); cerr << "Loop Unroll" << std::endl; LPPM = new LPPassManager(1); UnrollLoops = createLoopUnrollPass(); LPPM->add(UnrollLoops); LPPM->runOnFunction(Current2); LPPM->releaseMemory(); delete LPPM; LPPM = NULL; return true; } This tool compiles successfully, but I got errors when I apply it onto a program. DeadStoreElim = createDeadStoreEliminationPass(); DeadStoreElim-&gt...

...lowing to the PassManagerBuilder.cpp >>> to run some canonicalization routines and redo unrolling again. I have set >>> partial unrolling on + have a huge threshold + allows expensive loop trip >>> counts. Still it didn't unroll by 2. >>> >>> MPM.add(createLoopUnrollPass()); >>> >>> MPM.add(createCFGSimplificationPass()); >>> >>> MPM.add(createLoopSimplifyPass()); >>> >>> MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1)); >>> >>> MPM.add(createLCSSAPass()); >>> >>> MPM.ad...

...AU.addPreservedID(LoopSimplifyID); AU.addRequiredID(LCSSAID); AU.addPreservedID(LCSSAID); } However, I couldn't figure out how to call the LoopRotate and LoopUnroll passes since I cannot use addRequiredID or addRequired for these two transformations. In Scalar.h, I found: > Pass *createLoopUnrollPass(int Threshold = -1, int Count = -1, int AllowPartial = -1); > Pass *createLoopRotatePass(); Is to call these methods the way to go? How?, can somebody show me an excerpt? P.S. I tried hard on Google but I couldn't find anything related. Thanks! Jorge

...UnrollAndJam) { // Unroll and Jam. We do this before unroll but need to be in a separate // loop pass manager in order for the outer loop to be processed by // unroll and jam before the inner loop is unrolled. MPM.add(createLoopUnrollAndJamPass(OptLevel)); } MPM.add(createLoopUnrollPass(OptLevel)); // Unroll small loops I see: Loop-Closed SSA Form Pass Loop Pass Manager Unroll and Jam loops Loop Pass Manager Unroll loops Lazy Branch Probability Analysis Here two different loop pass managers were created. What is the difference in betwee...

...t to do is to turn loop (n) { <loop body> } into loop (n/4) { <loop body> <loop body> <loop body> <loop body> } loop (n%4) { <loop body> } I set allowPartial and Runtime to both 1 ( llvm::createLoopUnrollPass(Threshold, count, 1, 1) ) Also overload the UnrollingPreferences structure to gives values to all the Partial* members, but the loop still doesn't unroll. The unrolling process hits this code in LoopUnrollRuntime.cpp // Only unroll loops with a computable trip count and the trip count needs...

...o > > loop (n/4) > { > <loop body> > <loop body> > <loop body> > <loop body> > } > loop (n%4) > { > <loop body> > } > > I set allowPartial and Runtime to both 1 ( > llvm::createLoopUnrollPass(Threshold, count, 1, 1) ) > Also overload the UnrollingPreferences structure to gives values to all > the Partial* members, but the loop still doesn't unroll. > > The unrolling process hits this code in LoopUnrollRuntime.cpp > > // Only unroll loops with a computable trip co...

...iredID(LCSSAID); > AU.addPreservedID(LCSSAID); > } > > However, I couldn't figure out how to call the LoopRotate and > LoopUnroll passes since I cannot use addRequiredID or addRequired for > these two transformations. > > In Scalar.h, I found: > >> Pass *createLoopUnrollPass(int Threshold = -1, int Count = -1, int AllowPartial = -1); >> Pass *createLoopRotatePass(); > > > Is to call these methods the way to go? How?, can somebody show me an > excerpt? The create*Pass methods give you a Pass instance that you can add to a pass manager. If you're...

...PerModulePasses->add(createLoopUnswitchPass()); // Unswitch loops. + PerModulePasses->add(createInstructionCombiningPass()); // Clean up after LICM/reassoc + PerModulePasses->add(createIndVarSimplifyPass()); // Canonicalize indvars + PerModulePasses->add(createLoopUnrollPass()); // Unroll small loops + PerModulePasses->add(createInstructionCombiningPass()); // Clean up after the unroller + + if (optimize > 2) + PerModulePasses->add(createLoadValueNumberingPass()); // GVN for load instructions + + PerModulePasses->add(createGC...

I think this has to do with how the pass manager is populated when we give -O3 vs when we give particular pass names. Some passes have multiple createXYZPass() methods that accept arguments too. These methods call non-default pass constructors, which in turn cause the passes to behave in a different manner. eg: Pass *llvm::createLICMPass() { return new LegacyLICMPass(); } Pass

...); // Recognize idioms like memset. + PM.add(createLoopDeletionPass()); // Delete dead loops + + if (/*LoopVectorize &&*/ OptLevel > 1 && SizeLevel < 2) + PM.add(createLoopVectorizePass()); + + if (!DisableUnrollLoops) + PM.add(createLoopUnrollPass()); // Unroll small loops + + addExtensionsToPM(EP_LoopOptimizerEnd, PM); + + if (OptLevel > 1) + PM.add(createGVNPass()); // Remove redundancies + + PM.add(createInstructionCombiningPass()); + PM.add(createDeadStoreEliminationPass()); // Dele...

Andy and I briefly discussed this the other day, we have not yet got chance to list a detailed pass order for the pre- and post- IPO scalar optimizations. This is wish-list in our mind: pre-IPO: based on the ordering he propose, get rid of the inlining (or just inline tiny func), get rid of all loop xforms... post-IPO: get rid of inlining, or maybe we still need it, only

...erts/GraphPrinters.o llvm::PassManager::add(llvm::Pass*) /n/fs/scratch/tpondich/ParallelAssert/llvm-objects/tools/opt/Debug+Asserts/opt.o vtable for llvm::cl::opt<bool, false, llvm::cl::parser<bool> >/n/fs/scratch/tpondich/ParallelAssert/llvm-objects/tools/opt/Debug+Asserts/opt.o llvm::createLoopUnrollPass() /n/fs/scratch/tpondich/ParallelAssert/llvm-objects/tools/opt/Debug+Asserts/opt.o llvm::createLoopUnswitchPass(bool) /n/fs/scratch/tpondich/ParallelAssert/llvm-objects/tools/opt/Debug+Asserts/opt.o llvm::SMDiagnostic::Print(char const*, llvm::raw_ostream&) const/n/fs/scratch/tpondich/Paralle...

.../compiler/llvm-gcc/gcc/llvm-backend.cpp:322: error: `createLoopUnswitchPass' was not declared in this scope /projects/compiler/llvm-gcc/gcc/llvm-backend.cpp:324: error: `createIndVarSimplifyPass' was not declared in this scope /projects/compiler/llvm-gcc/gcc/llvm-backend.cpp:326: error: `createLoopUnrollPass' was not declared in this scope /projects/compiler/llvm-gcc/gcc/llvm-backend.cpp:328: error: `createLoadValueNumberingPass' was not declared in this scope /projects/compiler/llvm-gcc/gcc/llvm-backend.cpp:329: error: `createGCSEPass' was not declared in this scope /projects/compiler/ll...