similar to: [LLVMdev] Question in LLVM IR

Displaying 20 results from an estimated 400 matches similar to: "[LLVMdev] Question in LLVM IR"

2008 Jan 12
1
[LLVMdev] Labels
I'm attempting to modify a parser generator to emit LLVM code instead of C. So far the experience has been trivial, but I am now running into an error regarding labels that I can't seem to solve. Situation 1: A label is used immediately after a void function call (l6 in this case): <snip> %tmp26 = load i32* @yybegin, align 4 %tmp27 = load i32* @yyend, align 4 call void
2010 Sep 29
0
[LLVMdev] spilling & xmm register usage
On Sep 29, 2010, at 8:35 AMPDT, Ralf Karrenberg wrote: > Hello everybody, > > I have stumbled upon a test case (the attached module is a slightly > reduced version) that shows extremely reduced performance on linux > compared to windows when executed using LLVM's JIT. > > We narrowed the problem down to the actual code being generated, the > source IR on both systems
2008 Dec 01
0
[LLVMdev] Question in LLVM IR
On Sun, Nov 30, 2008 at 7:38 PM, bhavani krishnan <bhavi63 at yahoo.com> wrote: > Hi all, > > I observed the nature of the LLVM IR and because of the SSA form, it does not preserve function local variable names (like it preserves function argument names). Is there any way to track these local variables? > > Basically what I am doing is interpreting the IR against an abstract
2008 Oct 27
3
[LLVMdev] Is it possible to use EE within optimization pass?
Thanks John! My pass is registered only in 1 cpp file. It registers and executes fine without the EE. I only get the Pass registered multiple times error when I try to link to the EE by using LINK_COMPONENTS=engine in the Makefile. Without that line in the Makefile, my pass gets registered fine but it is not able to create EE(Error reading Symbol). So, how do I link LLVMExecutionEngine.o without
2008 Oct 27
0
[LLVMdev] Is it possible to use EE within optimization pass?
bhavani krishnan wrote: > Thanks John! My pass is registered only in 1 cpp file. It registers and executes fine without the EE. > > I only get the Pass registered multiple times error when I try to link to the EE by using LINK_COMPONENTS=engine in the Makefile. Without that line in the Makefile, my pass gets registered fine but it is not able to create EE(Error reading Symbol). So, how do
2008 Oct 27
2
[LLVMdev] Is it possible to use EE within optimization pass?
I realize my questions may not have been so clear. To give more details. I am writing a fuction pass. I want to interpret some of the instructions within the function pass. In order to do so, I need to create an EE object within the function pass. Now, If I compile and execute using opt. I get an error(Error loading symbol) at the line where I am creating EE. opt: symbol lookup error:
2008 Nov 15
3
[LLVMdev] How do I get the result of an instruction?
Hi all, I probably have a stupid question but I could not find out so please help me out here. I can use getOperand to get the operands of an instruction. Similarly, How do I get the result of an instruction? Thanks, Bhavani
2008 Nov 17
1
[LLVMdev] Assertion `InReg && "Value not in map!"' failed
Thanks Nick! ok. I ran through the verifier and this is the issue: verifying... Instruction does not dominate all uses! %tmp3 = add i32 %b, %a ; <i32> [#uses=2] store i32 %tmp3, i32* %0, align 4 Broken module found, compilation aborted! add is existing instruction in function. store is the instruction I have added to the function. How do I fix this now :(? Thanks, Bhavani --- On Mon,
2008 Dec 01
1
[LLVMdev] Question in LLVM IR
Thanks! How do I disable the optimizations?? Bhavani --- On Mon, 12/1/08, Eli Friedman <eli.friedman at gmail.com> wrote: > From: Eli Friedman <eli.friedman at gmail.com> > Subject: Re: [LLVMdev] Question in LLVM IR > To: bhavi63 at yahoo.com, "LLVM Developers Mailing List" <llvmdev at cs.uiuc.edu> > Date: Monday, December 1, 2008, 3:48 AM > On Sun,
2008 Nov 15
2
[LLVMdev] How do I get the result of an instruction?
Thanks! How do I cast the result to a string? I basically need to store the results of some instructions in a file. Thanks, Bhavani --- On Sun, 11/16/08, John Criswell <criswell at uiuc.edu> wrote: > From: John Criswell <criswell at uiuc.edu> > Subject: Re: [LLVMdev] How do I get the result of an instruction? > To: "bhavi63 at yahoo.com" <bhavi63 at
2008 Oct 27
0
[LLVMdev] Is it possible to use EE within optimization pass?
bhavani krishnan wrote: > I realize my questions may not have been so clear. To give more details. I am writing a fuction pass. I want to interpret some of the instructions within the function pass. In order to do so, I need to create an EE object within the function pass. Now, If I compile and execute using opt. I get an error(Error loading symbol) at the line where I am creating EE. >
2008 Nov 17
1
[LLVMdev] Assertion `InReg && "Value not in map!"' failed
Ah! I get it now. Thanks a lot ! I changed it to BitCastInst(AI,VoidPtrTy,"",j); And now I am getting the following error :(. I have been stuck with this error before also. I know I am missing out something silly. What is the cause of this error and Please let me know how to fix it. /home/bhavani/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1130: llvm::SDOperand
2008 Nov 17
2
[LLVMdev] Assertion `castIsValid(getOpcode(), S, Ty) && "Illegal BitCast"' failed.
ok.. So I am trying out what you have suggested. I have written the below code which basically tries to write the constant 10 to a file. myprint is a function pointer to a function which takes char * parameter and writes it to file. Value *Ten = ConstantInt::get(Type::Int32Ty, 10); const Type *VoidPtrTy = PointerType::getUnqual(Type::Int8Ty); AllocaInst *AI = new AllocaInst(Type::Int32Ty); Value
2008 Nov 16
0
[LLVMdev] How do I get the result of an instruction?
bhavani krishnan wrote: > Hi all, > > I probably have a stupid question but I could not find out so please help me out here. I can use getOperand to get the operands of an instruction. Similarly, How do I get the result of an instruction? > The instruction itself is its result. For example, if I wanted to generate code that does a getlemeneptr instruction (GEP) and then uses the
2008 Nov 16
0
[LLVMdev] How do I get the result of an instruction?
On Sat, Nov 15, 2008 at 3:58 PM, bhavani krishnan <bhavi63 at yahoo.com> wrote: > Thanks! > > How do I cast the result to a string? I basically need to store the results of some instructions in a file. If you're confused about how the IR works, http://llvm.org/demo/ can be useful. The question you're asking doesn't really seem to make sense. -Eli
2008 Oct 27
2
[LLVMdev] Is it possible to use EE within optimization pass?
Hi all, I am repeating my question from yesterday coz I need to find a solution to this ASAP. How do I link the executionengine to an optimization pass. If I use LINK_COMPONENTS=engine in the Makefile, I get the Pass registered multiple times error. And if i dont use anything, it is not able to load the EE. It gives error loading symbol error. So, 1. Is it possible to use the EE within an
2008 Oct 27
0
[LLVMdev] Is it possible to use EE within optimization pass?
bhavani krishnan wrote: > Hi all, > > I am repeating my question from yesterday coz I need to find a solution to this ASAP. > > How do I link the executionengine to an optimization pass. If I use LINK_COMPONENTS=engine in the Makefile, I get the Pass registered multiple times error. And if i dont use anything, it is not able to load the EE. It gives error loading symbol error. So,
2008 Oct 26
1
[LLVMdev] Error while creating ExecutionEngine
Thanks Bill! But it does not work. I get the error given below when I try to load LLVMExecutionEngine.o in the opt command. Error opening '../../../build/Release/lib/LLVMExecutionEngine.o': ../../../build/Release/lib/LLVMExecutionEngine.o: only ET_DYN and ET_EXEC can be loaded -load request ignored. Any ideas?? Please help me out here. Thanks, Bhavani --- On Sun, 10/26/08, Bill
2008 Nov 17
1
[LLVMdev] How do I get the result of an instruction?
ok. I think I get it now. I need to create the instructions as you have given. For eg: I could pass Instruction*(for storing the result of this instruction) while creating the store instruction. This is what you meant rite?? Thanks, Bhavani --- On Mon, 11/17/08, bhavani krishnan <bhavi63 at yahoo.com> wrote: > From: bhavani krishnan <bhavi63 at yahoo.com> > Subject: Re:
2008 Oct 26
2
[LLVMdev] Error while creating ExecutionEngine
Hi, I am completely new to llvm. I am trying to build an optimization pass. I need to interpret some instructions in the pass. To begin with, I used the exact same code as HowtoUseJIT example. It compiles fine. While executing using opt, I get the following error at the point where th executionengine is created: opt: symbol lookup error: ../../../Release/lib/Try.so: undefined symbol: