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...how to use it... David On Aug 18, 2009, at 1:11 AM, Carter Cheng wrote: > Actually after some digging I managed to answer these questions for > myself. I am guessing that this information is used by the Schedule* > classes in CodeGen. > > --- On Mon, 8/17/09, Carter Cheng <carter_cheng at yahoo.com> wrote: > >> From: Carter Cheng <carter_cheng at yahoo.com> >> Subject: [LLVMdev] ARMSchedule.td MipsSchedule.td etc. >> To: llvmdev at cs.uiuc.edu >> Date: Monday, August 17, 2009, 2:56 PM >> I apologize if this has been asked >> before...

Actually after some digging I managed to answer these questions for myself. I am guessing that this information is used by the Schedule* classes in CodeGen. --- On Mon, 8/17/09, Carter Cheng <carter_cheng at yahoo.com> wrote: > From: Carter Cheng <carter_cheng at yahoo.com> > Subject: [LLVMdev] ARMSchedule.td MipsSchedule.td etc. > To: llvmdev at cs.uiuc.edu > Date: Monday, August 17, 2009, 2:56 PM > I apologize if this has been asked > before but which classes utilize th...

I apologize if this has been asked before but which classes utilize the information in these files? I am asking since I am trying to extend the MIPS backend to 64bit among other things. Thanks in advance, Carter.

I am curious- what is the current status of the MIPS support in LLVM? I have a mipsel device and was wondering if I could compile code for it with clang. Would I have to implement a backend setup myself? Is there also an option to compile w/ clang on an x86 for Mipsel? Thanks in advance.

...<me22.ca at gmail.com> wrote: > From: me22 <me22.ca at gmail.com> > Subject: Re: [LLVMdev] simulating c style unions in LLVM > To: "LLVM Developers Mailing List" <llvmdev at cs.uiuc.edu> > Date: Monday, June 29, 2009, 11:32 PM > 2009/6/29 Carter Cheng <carter_cheng at yahoo.com>: > > > > I am trying to create a boxed tagged datatype for a > language where it is necessary to resolve the type at > runtime. If I were writing an interpreter in C- it would > most likely look something like this- > > > > Is there a standard way f...

I am trying to create a boxed tagged datatype for a language where it is necessary to resolve the type at runtime. If I were writing an interpreter in C- it would most likely look something like this- struct { unsigned tag; union { long Int; double Float; .... } } Is there a standard way for constructing a type like this in LLVM? Thanks again.

On Sun, Aug 2, 2009 at 6:09 PM, Carter Cheng<carter_cheng at yahoo.com> wrote: > I just looked over your diff and it would seem to me that additional changes would be needed to be done to some of the LLVM-IR -> DAG stuff to make things fully functional (this could be a bit of supposition on my part since I do not fully understand all of the code)...

...d right now for > unions. > They are mainly useful for target-independent > front-ends.  I don't > have the time right now to push them, though they would be > useful for > my work, just not critical. > > Andrew > > On Sun, Aug 2, 2009 at 3:57 PM, Carter Cheng<carter_cheng at yahoo.com> > wrote: > > Hi, > > > > I really dont know I came rather late to the > discussion and some kind folks on this list gave me a few > links. I didnt see much mention of any controversy. Are > there issues still that need to be resolved? > > > &g...

On Tue, Jun 30, 2009 at 12:16 AM, Carter Cheng<carter_cheng at yahoo.com> wrote: > Since pointer sizes are platform dependent if I am trying to use the union in question with an extern C function is it possible to make write the single definition in a platform independent way? Not really; there's some discussion of that in the thread starting at...

Eli Friedman wrote: > On Tue, Jun 30, 2009 at 12:16 AM, Carter Cheng<carter_cheng at yahoo.com> wrote: > >> Since pointer sizes are platform dependent if I am trying to use the union in question with an extern C function is it possible to make write the single definition in a platform independent way? >> > > Not really; there's some discussion...

On Mon, Jul 20, 2009 at 4:15 AM, Carter Cheng<carter_cheng at yahoo.com> wrote: > This is probably another very basic question- but is there a simple method for cross compiling LLVM for another platform? If you already have a cross-compiling environment set up, it shouldn't be too hard; for LLVM and llvm-gcc, you should be able to pass in --host...

On Mon, Jul 27, 2009 at 8:56 AM, Carter Cheng<carter_cheng at yahoo.com> wrote: > Is there also an option to compile w/ clang on an x86 for Mipsel? A normal build of clang includes limited cross-compile support by passing in the "-ccc-host-triple" option, although it's still a bit of a work-in-progress. Nobody has added support for an...

On Sun, Aug 2, 2009 at 2:06 PM, Carter Cheng<carter_cheng at yahoo.com> wrote: > I was looking over the experimental MIPS backend and noticed that it has a delay slot pass which just inserts nops into the delay slots. I assume it should be possible to do a bit better than this. Is there an existing pass which "fills" delay slots or would I...

Hi, I was looking over the experimental MIPS backend and noticed that it has a delay slot pass which just inserts nops into the delay slots. I assume it should be possible to do a bit better than this. Is there an existing pass which "fills" delay slots or would I have to write one if I wanted slightly more optimal code? (anyone have any references?) Thanks in advance.

This is probably another very basic question- but is there a simple method for cross compiling LLVM for another platform? Thanks in advance.

2009/6/29 Carter Cheng <carter_cheng at yahoo.com>: > > I am trying to create a boxed tagged datatype for a language where it is necessary to resolve the type at runtime. If I were writing an interpreter in C- it would most likely look something like this- > > Is there a standard way for constructing a type like this in...

On Sun, Jun 28, 2009 at 1:05 AM, Carter Cheng<carter_cheng at yahoo.com> wrote: > 1) Using the Builder interface how does one create the equivalent of stack frames and access variables in the current stack frame or perhaps in the static enclosing scope (assuming functions can be nested)? To create stack variables, you can use the alloca instruction;...

I have been toying around with the LLVM tutorial code and I am trying to deduce what I can from it as a basis for a compiler frontend for a simple language of my own devising (once I understand what I am doing I will probably attempt mapping a more complex language target). I am having some difficulties however understanding how certain things work and I was hoping perhaps someone could help me

...ml As far as I know, there isn't enough demand right now for unions. They are mainly useful for target-independent front-ends. I don't have the time right now to push them, though they would be useful for my work, just not critical. Andrew On Sun, Aug 2, 2009 at 3:57 PM, Carter Cheng<carter_cheng at yahoo.com> wrote: > Hi, > > I really dont know I came rather late to the discussion and some kind folks on this list gave me a few links. I didnt see much mention of any controversy. Are there issues still that need to be resolved? > > So far I am still quite the novice with LL...

Hi, I have been looking at the LLVM JIT system as a basis for a project I am working on and had a few beginner's questions which I was hoping someone might be able to answer and which I haven't yet been able to figure out reading the source code. If anyone could provide some help I would appreciate it. 1) How does one go about calling a precompiled function external to the JIT from a JIT