Displaying 20 results from an estimated 1000 matches similar to: "Preserving the type of structure"
2018 Aug 11
2
Need help in understanding llvm optimization
I am sorry to not make my question clear. My question is how this value is
calculated without having fadd and fsub in IR?
On Sat, Aug 11, 2018 at 4:06 PM, Craig Topper <craig.topper at gmail.com>
wrote:
> Neither 1e16 or 1e16+1 can be accurately represented in a double. The
> largest integer than be accurately represented is 2^53. As the number gets
> larger floating sacrifices
2020 Jun 24
2
Function name demangling in llvm ir
(though, usual caveat: you /usually/ shouldn't be doing that - instead
relying only on whatever semantics the IR actually carries, rather
than implying extra semantics based on the demangled name)
On Wed, Jun 24, 2020 at 12:48 PM Johannes Doerfert via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> I have not tried it but maybe
>
> `std::string llvm::demangle(const
2018 Jan 13
0
Integrating llvm pass with pass manager
Do you pull clang under llvm/tools and compile it as well? In theory, if
`opt` recognize the option, so does `clang -mllvm`.
2018-01-12 8:47 GMT+08:00 sangeeta chowdhary <sangitachowdhary at gmail.com>:
> Hello,
>
> I have tried giving this option like this
>
> clang -c -emit-llvm -mllvm -rdetector hello.c -c -o hello.bc
> but I am getting error " Unknown command
2018 Aug 21
4
different output with fast-math flag
This is of course not homework. I am trying to understand how fast math
optimizations work in llvm. When I compared IR for both the programs, the
only thing I have noticed is that fdiv and fmul are replaced with fdiv fast
and fmul fast. Not sure what happens in fdiv fast and fmul fast.
I feel that its because d/max is really small number and fast-math does not
care about small numbers and consider
2018 Jan 08
5
Integrating llvm pass with pass manager
Hello,
I have followed steps given in - https://stackoverflow.com/questions/29910051/integrating-llvm-passes/48142693#48142693 <https://stackoverflow.com/questions/29910051/integrating-llvm-passes/48142693#48142693>, to integrate my pass with pass manager and run it with clang. I am able to run my pass with opt - opt -mypass but when I try to run it with clang, I always get an error -
2018 Aug 11
4
Need help in understanding llvm optimization
Hi,
I have below code in C -
int main() {
double x,y;
x = 1e16;
y = (x + 1) - x;
printf("y:%e\n", y);
return 0;
}
llvm bitcode looks like this for this function -
; Function Attrs: nounwind uwtable
define dso_local i32 @main() local_unnamed_addr #0 {
entry:
%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x
i8], [4 x i8]* @.str, i64 0, i64
2020 Jun 24
2
Function name demangling in llvm ir
Hello,
I am doing some program analysis with C++ programs. I need to check if some
particular function is called in the program, for that I need the name of
the function being called in the call instruction. Since C++ mangles the
name of the function, I need a way to demangle the function name in llvm
IR. Is there any way to achieve that in llvm pass?
Regards,
Sangeeta
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2020 Jun 15
2
Need help in creating clone functions
Hello,
I am working on creating a llvm pass which clones a certain function with a
different name using CloneFunctionInto. I create a call instruction to call
a new cloned function from the old function. In llvm IR and in .s file
everything looks as expected, but when I call this program with gdb and set
a breakpoint on this new function, gdb shows the name of the original
function. I know it has
2018 Jan 15
0
Integrating llvm pass with pass manager
On 14 Jan 2018, at 00:14, sangeeta chowdhary <sangitachowdhary at gmail.com> wrote:
>
> I have taken SimplePass and added in Transform directory, “libLLVMSimplePass.a” is built but I can not see this pass in opt —help. I don’t even see the name of pass while registering it in the example.
The SimplePass example is intended to be built out of tree, so I’ve no idea what happens if you
2018 May 23
1
How to create a call to a function which returns a struct
Hello,
I am trying to create a call to a function which returns a struct in llvm pass. I also want to read struct fields returned from this function call. Can somebody help me with this?
Regards,
Sangeeta
2018 Jan 14
2
Integrating llvm pass with pass manager
I have taken SimplePass and added in Transform directory, “libLLVMSimplePass.a” is built but I can not see this pass in opt —help. I don’t even see the name of pass while registering it in the example.
> On Jan 13, 2018, at 7:35 AM, David Chisnall <David.Chisnall at cl.cam.ac.uk> wrote:
>
> On 13 Jan 2018, at 03:45, Craig Topper via llvm-dev <llvm-dev at lists.llvm.org>
2018 Aug 30
2
Instruction does not dominate all uses!
Hello All,
I am instrumenting IR to pass addres of the function to runtime but I am
getting error - Instruction does not dominate all uses. I used M.dump() to
get below dump, not able to figure out what I am doing wrong. Any help
would be much appreciated.
define dso_local double @mysqrt(double %val1) local_unnamed_addr #0 {
entry:
%0 = bitcast double (double)* @mysqrt to i8*
%1 = call
2017 Jun 12
3
After gluster clean up sub directories becomes invisible
can you please describe a bit more about the steps taken to clean up and
re-configure gluster?
Regards,
Vijay
On Mon, Jun 12, 2017 at 12:08 PM, Sangeeta Ramapure <
sangeeta.ramapure at globallogic.com> wrote:
> Kindly somebody help me with this issue.
>
>
>
> Thanks & Regards,
>
> Sangeeta Ramapure
>
>
>
> *From:* Sangeeta Ramapure
2017 Jun 12
0
After gluster clean up sub directories becomes invisible
Kindly somebody help me with this issue.
Thanks & Regards,
Sangeeta Ramapure
*From:* Sangeeta Ramapure [mailto:sangeeta.ramapure at globallogic.com]
*Sent:* June 09, 2017 4:41 PM
*To:* 'gluster-users at gluster.org'
*Cc:* 'devarajan at ericsson.com'
*Subject:* After gluster clean up sub directories becomes invisible
Hi Team,
After performing the gluster clean up
2017 Jun 09
2
After gluster clean up sub directories becomes invisible
Hi Team,
After performing the gluster clean up and again doing gluster configuration
the sub directories become invisible. Even after they are present the
directories are invisible. If I create a new directory by the same name it
will say the directory already exists.
Thanks & Regards,
Sangeeta Ramapure
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2017 Jun 12
0
After gluster clean up sub directories becomes invisible
Steps to do gluster clean up
1. umount -f /export/home/ecmsftp
2. Remove the /export/home/ecmsftp mount point line from /etc/fstab
file if it exists.
3. Delete gluster file system volume if it exists; ignore if it does
not exist.
# gluster
gluster>volume list
eftpVol
gluster> volume stop eftpVol
Stopping volume will make its data inaccessible. Do you want to
2018 Aug 21
2
different output with fast-math flag
Why the output is different for this below program when compiled using
clang with fast-math optimization
#include<stdio.h>
int main() {
double d = 1.0;
double max = 1.79769e+308;
d /= max;
printf("d:%e:\n", d);
d *= max;
printf("d:%e:\n", d);
return 0;
}
prints 0 with fast math but 1 without fast math.
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An
2002 Aug 05
2
No subject
Hello,
I downloaded R today because I was told it has very good bootstrapping
abilities. What I need to do is to program it (or use an existing program)
to bootstrapping test for multimodality using nonparametric kernel density
estimates as proposed by Efron and Tibshirani (1993). If anyone can get me
started, I will be immensely grateful.
Thanks.
Sangeeta
2009 Feb 16
3
Finishing up the contributors list as well
Guys,
OK, now that we have the new core contributors squared away, we
can go back to finishing the contributors list.
There were some people who got added and then there is existing
contributors list. I think Darren''s suggestion to wait to add new
core contributors is fine (let the new constitution settle down
and we can in the meanwhile have a more inclusive look at both
rather than
2018 Jan 13
2
Integrating llvm pass with pass manager
Clang doesn’t support adding passes from the command line the way opt does.
Opt has special parsing in opt.cpp for this that clang doesn’t have.
I’m not sure what the correct way to do this is. I think your plugin needs
to do something to tell clang/llvm when to run the pass. I’ll try to look
later when I’m back at a computer.
On Fri, Jan 12, 2018 at 7:00 PM 陳韋任 via llvm-dev <llvm-dev at