search for: addpassestoemit

Hi folks, just installed the new llvm 1.9 build and noticed that my code no longer worked. It seems something has changed with addPassesToEmitFile(). First, the arguments to that method changed so that it no longer takes a PassManager, but only a FunctionPassManager. Instead there is a addPassesToEmitWholeFile() method, but that is marked as optional, and when I change my code to use that there is no output (only an empty file)....

On Sun, 21 Jan 2007, Marcel Weiher wrote: > just installed the new llvm 1.9 build and noticed that my code no > longer worked. It seems something has changed with > addPassesToEmitFile(). First, the arguments to that method changed so > that it no longer takes a PassManager, but only a > FunctionPassManager. Instead there is a addPassesToEmitWholeFile() > method, but that is marked as optional, and when I change my code to > use that there is no output (only an...

Hi folks, just installed the new llvm 1.9 build and noticed that my code no longer worked. It seems something has changed with addPassesToEmitFile(). First, the arguments to that method changed so that it no longer takes a PassManager, but only a FunctionPassManager. Instead there is a addPassesToEmitWholeFile() method, but that is marked as optional, and when I change my code to use that there is no output (only an empty file)....

...lc.cpp? > > I would like to be able to write a pass that looks at MachineFunctions > and inserts instructions right before register allocation (but after > all other optimization/instruction selection passes).  Any direction/ > advice would be of great help.  Thanks! llc uses Target.addPassesToEmit* interface to add passes. You can insert your pass at appropriate place here. - Devang

Is there a beginner's tutorial/documentation on how to write passes for the llc tool? I've managed to write some simple analysis passes for the opt tool but can't figure out how to do the same for llc. What is the proper way to integrate a new MachineFunction pass with llc? Is there a way to register passes and selectively enable them on the command line (as with opt) or do I need to

...started the refactoring work. I'm in the midst of finishing up an implementation following the model of how register allocators are selected. Thgere may be some more refactoring/code sharing work to be done with this, but I want to get it working first. createRegisterAllocator() is called by addPassesToEmit.* to instantiate the register allocator. Coalescing is a bit different. Typically, the register allocator is the client of the coalescer. My original thought was to have each register allocator implementation call createRegisterCoalescer directly. I then thought it might be better to have allo...

...e able to write a pass that looks at MachineFunctions >> and inserts instructions right before register allocation (but after >> all other optimization/instruction selection passes). Any direction/ >> advice would be of great help. Thanks! >> > > llc uses Target.addPassesToEmit* interface to add passes. You can > insert your pass at appropriate place here. > > - > Devang > > One related question. Can we write CallGraphSCCPass in llc? - Sanjiv

...> > I'm in the midst of finishing up an implementation following the model of how > register allocators are selected. Thgere may be some more refactoring/code > sharing work to be done with this, but I want to get it working first. > > createRegisterAllocator() is called by addPassesToEmit.* to instantiate the > register allocator. > > Coalescing is a bit different. Typically, the register allocator is the > client of the coalescer. My original thought was to have each register > allocator implementation call createRegisterCoalescer directly. I then > thought i...