similar to: [LLVMdev] Passing String to an external function in llvm

On Thu, Jul 25, 2013 at 9:07 AM, Abhinash Jain <omnia at mailinator.com> wrote: > Hi All, > > On my llvm pass I have some variable named "expr" which is being declared as > :- > string expr; // or char *expr; // I don't understand this question - these are C++ declarations, not LLVM declarations (not to mention LLVM IR doesn't have

I did some computation through llvm pass, and store those computed values on string. eg. :- stringstream lhs; lhs << instr->getOperand(1); // 'instr' is some instruction string lhsvar=lhs.str(); Now I want to pass this 'lhsvar' to the external function, so how can i do this??? This is just the part of a code to make you understand. if you say I can even provide the

On Thu, Jul 25, 2013 at 10:12 AM, Abhinash Jain <omnia at mailinator.com> wrote: > I did some computation through llvm pass, and store those computed values on > string. eg. :- > > stringstream lhs; > lhs << instr->getOperand(1); // 'instr' is some instruction > string lhsvar=lhs.str(); > > Now I want to pass this 'lhsvar' to the external

> in LLVM IR, the operands of most expression are registers, so don't have a memory address. Yes I agree with your this statement, But before becoming part of the expressions, the registers will actually fetch some value from memory, through Load operations. as shown in example "r3=r1+r2" will be the expression, where registers such as r1 and r2 contains (fetch) the values from

@Jim Grosbach, Is there anyway to resolve it??? -- View this message in context: http://llvm.1065342.n5.nabble.com/LLVM-ERROR-Invalid-instruction-tp59856p59865.html Sent from the LLVM - Dev mailing list archive at Nabble.com.

On Mon, Jun 17, 2013 at 11:49 PM, Abhinash Jain <omnia at mailinator.com>wrote: > > But before becoming part of the expressions, the registers will actually > fetch some value from memory, through Load operations. > This is not true; the virtual registers need not be loaded from memory. You may find <

How to get memory address of all operands which constitutes an expression ? eg. a=b+c; (want to know the memory address of b and c)...... Since I want this at run time, So at assembly level this expression will become something like as follows:- Load r1, M[b] Load r2, M[c] r3=r1+r2 store M[a],r3 Now what i want to do is that, at every store instruction, I should get the memory address of all

How can I get the name of the virtual Registers present on an instruction. eg. %add18 = add nsw i32 %mul17, %37 in this case I want to extract the name of the virutal registers as "add18", "mul17","37". This can easily be done in the case of store Instruction eg. store i32 %add20, i32* %t, align 4 in this case functions like

On Jul 26, 2013, at 6:48 PM, Abhinash Jain <omnia at mailinator.com> wrote: > Is there anyway to resolve it??? 1. Teach the cpp backend how to handle it. 2. Compile with -fno-exceptions to turn off exceptions. -- Stephen Checkoway

#include <string> #include <string.h> #include <iostream> #include <stdio.h> using namespace std; void foo(string str) { } int main() { string str="aa"; foo(str); return 0; } 1. clang++ -c -emit-llvm foo.cpp -o foo.ll 2. llc -march=cpp -o foo.ll.cpp foo.ll (at the execution of this command its giving an error as "Invalid Instruction") May I know why

C Code :- int main() { int a=10,c; int *b; c=20; *b=a; return 0; } IR of above code :- define i32 @main() #0 { entry: 1. %retval = alloca i32, align 4 2. %a = alloca i32, align 4 3. %c = alloca i32, align 4 4. %b = alloca i32*, align 8 5. store i32 0, i32* %retval 6. store i32 10, i32* %a, align 4 7. store i32 20, i32* %c, align 4 8. %0 = load i32* %a, align 4 9. %1 = load i32** %b,

Sorry I have actually edited the post. I did check its type by using isa<PointerType>(cast<AllocaInst>(instr->getOperand(1))->getAllocatedType()) but it is only detecting i32** %b on line 8 of IR as a pointer type. Whereas I also want to detect the i32* %1 on line 11 of IR as a pointer type. So how can I do this?? -- View this message in context:

I have one file named hashtable.cpp whose link is "http://pastebin.com/Cq2Qy50C" and one llvm pass named testing.cpp whose link is "http://pastebin.com/E3RemxLF" Now on this testing.cpp pass I have computed the string named "expr" which I want to pass to the function named hashtable(string) in hashtable.cpp (on line 106 of testing.cpp) > looking at simple

Thanx for the response. %x = alloca i32, align 4 %y = alloca i32, align 4 %a = alloca i32, align 4 %t = alloca i32, align 4 1. %10 = load i32* %x, align 4 2. %11 = load i32* %y, align 4 3. %div = sdiv i32 %10, %11 4. %12 = load i32* %a, align 4 5. %mul4 = mul nsw i32 %div, %12 6. store i32 %mul4, i32* %t, align 4 a. %mul4 = mul nsw i32 %div, %12 b. %div = sdiv i32 %10, %11 c. %10 =

> OK - seems you might want to take a few steps back & understand how > C++ code is written/structured generally (and/or take a look at other > parts of the compiler). You'll need a header file with the declaration > of your function & you can include that header file in the > hashtable.cpp and testing.cpp - if that sentence doesn't make sense to > you yet, please

> > Basically, flag operands are a hack used to handle resources that > are not > > accurately modeled in the scheduler (e.g. condition codes, explicit > > register assignments, etc). The basic idea of the flag operand is > that > > they require the scheduler to keep the "flagged" nodes stuck > together in > > the output machine instructions. >

Hi, I need to convert an integer into a string. I would normally do that in C++ by using the StringStream class, but the LLVM coding standards discourage using that class. The same coding standards suggest to use llvm:StringStream instead, but I cannot find that class anywhere; furthermore, the header file where it was supposed to be (according to the coding standards) doesn't even exist. Is

Hi Pablo, Can you provide a link to the document containing a reference to llvm::StringStream? I've looked in both the llvm coding standards, and llvm programming manual for versions: ToT (3.0), 2.9 (which seems to be the same as ToT), and 2.8. Obviously my search is missing something. Thanks in advance Garrison On Oct 12, 2011, at 8:18, Pablo Barrio wrote: > Hi, > > I need

Hi, I wanted to count the number of "*LLVM*" instruction executed dynamically in any program. Have already tried "lli -stats -force-interpreter filename.bc", but it's not giving any information related to instruction count. lli --version output:- LLVM version 3.4svn DEBUG build with assertions. Default target: x86_64-unknown-linux-gnu Host CPU: corei7 -- View

Evan Jones wrote: > On Nov 23, 2005, at 8:16, Evan Jones wrote: > >> (4) Write the foreignST into the TmpArchive file. Is there any reason >> that this isn't possible? Then the final archive would be created in a >> single pass, and it could just be moved into place. > > > Ah. I see: It needs to be written in order to compute the offsets. Exactly. >