similar to: Writing an LLVM Pass that depends on mem2reg

Oh, I see, that makes a lot of sense. How do I build the pass pipeline? On Thu, Feb 11, 2016 at 5:54 PM, Mehdi Amini <mehdi.amini at apple.com> wrote: > > On Feb 11, 2016, at 9:49 AM, Stanislav Manilov via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > > > Hello, > > > > I am used to specifying dependence on other LLVM passes in the >

Hi, I read your post in LLVM forum. I want to use getAnalysisUsage(AnalysisUsage &AU) to get MachineLoopInfo. I have used this on my passes before but, this time I am trying to get this information in ScheduleDAGRRList scheduler class. There is no runonmachinefunction function. Do you know how I can implement this? Regards, Fateme I will appreciate it you can help me with this problem.

I have used the following command for my pass (without -mem2reg): clang -Xclang -load -Xclang MYPASS.so -c ../../tests/test1.c For mem2reg, I tried the following: clang -mllvm -mem2reg -Xclang -load -Xclang MYPASS.so -c ../../tests/test1.c On Mon, Mar 21, 2016 at 9:26 PM, Mehdi Amini <mehdi.amini at apple.com> wrote: > >> On Mar 21, 2016, at 6:23 PM, Syed Rafiul Hussain

I am currently building a BasicBlock pass which requires to run -reg2mem before it, and need to run -mem2reg after it to clean up. So, I want to specify -reg2mem as one of the pre-requisite passes to it, as: class MyPass: public BasicBlockPass{ virtual void getAnalysisUsage(AnalysisUsage &AU){ ... AU.addRequired<RegToMem>(); ... } }; I searched all passes under

Unless mem2reg does something other than my understanding of it, I can't see why any pass would "require" that... It is not guaranteed to do anything to any particular piece of code, so relying on it seems very unreliable, I would think. -- Mats On 22 March 2016 at 04:32, Kevin Hu via llvm-dev <llvm-dev at lists.llvm.org> wrote: > Hi, > > > Is there any way that

Hi, A number of transforms are actually independent, so here's a partial fix. I updated the dependencies in a cluster of transforms: LowerSwitch, Mem2Reg, LowerSelect, LowerAllocations, UnifyFunctionExitNodes. The patch has been tested, but not extensively. PassManager doesn't complain, and the result of a test pass that requires all these (except for LowerAllocations) together works

I guess AU.addRequiredID(DemoteRegisterToMemoryID) would do the trick. - xi On Jun 19, 2011, at 11:03 PM, Chuck Zhao wrote: > I am currently building a BasicBlock pass which requires to run -reg2mem before it, and need to run -mem2reg after it to clean up. > > So, I want to specify -reg2mem as one of the pre-requisite passes to it, as: > > > class MyPass: public

On Wed, May 4, 2016 at 3:10 PM, Stanislav Manilov < stanislav.manilov at gmail.com> wrote: > As in "look at the source of clang" or as in "look at the -S -emit-llvm" > output? If you mean the former, then would that be easy for someone who > hasn't seen the clang source before? > Generally the latter - then potentially set some breakpoints & look at

Hi Philip, I forgot to mention that I was ignoring loop-independent dependences. If I don't I get an inconsistent, ordered, anti, loop-independent dependence and an inconsistent, ordered, flow, loop-carried dependence for example A. At the same time I get just a consistent, ordered, anti, loop-independent dependence for example B. Here's the .ll code for example A: *; Function Attrs:

Hi Philip, Thanks for checking! I'm running my own Foo pass that registers DependenceAnalysisWrapperPass as a prerequisite and then I run it like so: opt -load libfoo.so -foo example.bc This is LLVM 3.9. Cheers, - Stan On Wed, Jun 21, 2017 at 5:40 PM, Philip Pfaffe <philip.pfaffe at gmail.com> wrote: > Hi Stan, > > in both cases I get a consistent anti result. Can you

Hello, I wrote my own pass which needs to do some loop unrolling. I can perform loop unrolling via opt: opt -mem2reg -loops -loop-simplify -loop-rotate -lcssa -loop-unroll -unroll-count=50 mytest.bc -o mytest.bc This command works perfectly. However, what I really want is to produce the **same behavior** but from my own pass (i.e., I don't want to use opt). I wrote a Module pass which

The usual advice I provide people is "see what Clang does with an equivalent C construct" On Wed, May 4, 2016 at 12:18 PM, Stanislav Manilov < stanislav.manilov at gmail.com> wrote: > Hi, > > There is another benefit to keeping the CppBackend: it's great for > learning how to use the IR and the C++ API in particular, as can be seen > from this SO Q&A: >

I have used the follwing command, opt -load LLVComMan.so -ComMan -memdep -tbaa -mem2reg maptest.ll -S What option other than -mem2reg should be included in this case to get the right results? Does the order in which I specify the optimizations to be run make a difference? Duncan Sands wrote: > > Hi Adarsh, > >> I want to check if the values a and b in the program alias.

Hi Duncan, thanks for the quick answer. Yes I'm sure the runOnModule is being called, and when I dump the functions before exiting the method I can see the AlwaysInline attribute. I'll check InlineAlways.cpp and will reimplement as last resource but I still wonder why this is not working. On Mon, Nov 5, 2012 at 5:03 PM, Duncan Sands <baldrick at free.fr> wrote: > Hi Arnaldo,

Hi Arnaldo, On 05/11/12 10:02, Arnaldo wrote: > Hi Duncan, thanks for the quick answer. > > Yes I'm sure the runOnModule is being called, and when I dump the functions > before exiting the method I can see the AlwaysInline attribute. > > I'll check InlineAlways.cpp and will reimplement as last resource but I still > wonder why this is not working. if you want more

On 26 September 2013 17:52, Stanislav Manilov <stanislav.manilov at gmail.com>wrote: > To answer your question I am testing on a pandaboard currently, which has > an arm cortex-a9 processor, which I think is 64-bit. > Cortex-A9 is still 32-bits, so you'll have all support you need. ;) however it doesn't if I remove the -ffreestanding flag. I need to figure > this out

Hi Adarsh, > I have used the follwing command, > opt -load LLVComMan.so -ComMan -memdep -tbaa -mem2reg maptest.ll -S > What option other than -mem2reg should be included in this case to get the > right results? Does the order in which I specify the optimizations to be run > make a difference? what is in maptest.ll? Ciao, Duncan.

Hello, I wrote my own pass which needs to do some loop unrolling. I can perform loop unrolling via opt: opt -mem2reg -loops -loop-simplify -loop-rotate -lcssa -loop-unroll -unroll-count=50 mytest.bc -o mytest.bc This command works perfectly. However, what I really want is to produce the **same behavior** but from my own pass (i.e., I don't want to use opt). I wrote a Module pass which

It contains the bitcode file(without any optimization) of the below program, void map(int *a) { *a=20; } int main(){ int *a=(int *)malloc(sizeof(int)); *a=15; map(a); return 0; } I want to check if the pointer operand of each store instruction aliases with the function's arguments. I have used below code for this, virtual void getAnalysisUsage(AnalysisUsage &AU) const {

> To answer your question I am testing on a pandaboard currently, which has >> an arm cortex-a9 processor, which I think is 64-bit. >> > > Cortex-A9 is still 32-bits, so you'll have all support you need. ;) > Ah, Okay, embarrassing... however it doesn't if I remove the -ffreestanding flag. I need to figure >> this out next. >> > > Can you at