Abid Malik via llvm-dev
2020-Jan-16 18:11 UTC
[llvm-dev] How to get the arguments of a function call in LLVM?
Hello,
I am using the following to capture the values of the arguments in a call
function:
for (auto &BB : F) {
for (auto &II : BB) {
if (CallInst *c = dyn_cast <CallInst> (&II)){
if ( Function *func c->getCalledFunction()){
if ( func->getName()
=="__kmpc_for_static_init_4" ||
func->getName()
="__kmpc_for_static_fini" )
{
errs() <<
func->getName();
errs() << "\n";
for(auto arg
func->arg_begin(); arg != func->arg_end(); ++arg) {
errs() << *arg
<<
"\n";
if(auto* ci
dyn_cast<ConstantInt>(arg))
errs() <<
ci->getValue() << "\n";
}
}
}
}
}
}
I am looking for two specific calls for OMP in the *.ll file. For the
following:
call void @__kmpc_for_static_init_4(%struct.ident_t* @0, i32 %17, i32 34,
i32* %8, i32* %5, i32* %6, i32* %7, i32 1, i32 1)
I am able to see it and get the following:
__kmpc_for_static_init_4
%struct.ident_t* %0
i32 %1
i32 %2
i32* %3
i32* %4
i32* %5
i32* %6
i32 %7
i32 %8
The three arguments ( third ( schedule) and the last two; loop increment
and chunk size are constant). The innermost loop should get them but it
seems the test command fails on these three arguments. Also, the argument
variable are different from the actual variable from the *.ll file.
Any comments.
Thanks,
--
Abid M. Malik
******************************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200116/e0746845/attachment.html>
Craig Topper via llvm-dev
2020-Jan-16 18:20 UTC
[llvm-dev] How to get the arguments of a function call in LLVM?
I think you need to get the arguments from the CallInst, not func. func is getting the arguments from the function defintion. If you want the arguments from the call site you want them from CallInst. ~Craig On Thu, Jan 16, 2020 at 10:12 AM Abid Malik via llvm-dev < llvm-dev at lists.llvm.org> wrote:> Hello, > > I am using the following to capture the values of the arguments in a call > function: > > for (auto &BB : F) { > for (auto &II : BB) { > if (CallInst *c = dyn_cast <CallInst> (&II)){ > if ( Function *func > c->getCalledFunction()){ > if ( func->getName() > =="__kmpc_for_static_init_4" || > func->getName() => "__kmpc_for_static_fini" ) > { > errs() << func->getName(); > errs() << "\n"; > for(auto arg > func->arg_begin(); arg != func->arg_end(); ++arg) { > errs() << *arg << > "\n"; > if(auto* ci > dyn_cast<ConstantInt>(arg)) > errs() << > ci->getValue() << "\n"; > } > } > } > } > } > } > > I am looking for two specific calls for OMP in the *.ll file. For the > following: > > call void @__kmpc_for_static_init_4(%struct.ident_t* @0, i32 %17, i32 34, > i32* %8, i32* %5, i32* %6, i32* %7, i32 1, i32 1) > > I am able to see it and get the following: > __kmpc_for_static_init_4 > %struct.ident_t* %0 > i32 %1 > i32 %2 > i32* %3 > i32* %4 > i32* %5 > i32* %6 > i32 %7 > i32 %8 > The three arguments ( third ( schedule) and the last two; loop increment > and chunk size are constant). The innermost loop should get them but it > seems the test command fails on these three arguments. Also, the argument > variable are different from the actual variable from the *.ll file. > > Any comments. > > Thanks, > > -- > Abid M. Malik > ****************************************************** > > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200116/5fbfd2f9/attachment.html>
Doerfert, Johannes via llvm-dev
2020-Jan-16 18:29 UTC
[llvm-dev] How to get the arguments of a function call in LLVM?
Hi Abid,
CallInst has a member getArgOperand(No) which returns the values passed
at the call site. The code below iterates over function arguments
instead.
Cheers,
Johannes
---------------------------------------
Johannes Doerfert
Researcher
Argonne National Laboratory
Lemont, IL 60439, USA
jdoerfert at anl.gov
________________________________________
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Abid
Malik via llvm-dev <llvm-dev at lists.llvm.org>
Sent: Thursday, January 16, 2020 12:11
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] How to get the arguments of a function call in LLVM?
Hello,
I am using the following to capture the values of the arguments in a call
function:
for (auto &BB : F) {
for (auto &II : BB) {
if (CallInst *c = dyn_cast <CallInst> (&II)){
if ( Function *func =
c->getCalledFunction()){
if ( func->getName()
=="__kmpc_for_static_init_4" ||
func->getName() ==
"__kmpc_for_static_fini" )
{
errs() <<
func->getName();
errs() << "\n";
for(auto arg =
func->arg_begin(); arg != func->arg_end(); ++arg) {
errs() << *arg
<< "\n";
if(auto* ci =
dyn_cast<ConstantInt>(arg))
errs() <<
ci->getValue() << "\n";
}
}
}
}
}
}
I am looking for two specific calls for OMP in the *.ll file. For the following:
call void @__kmpc_for_static_init_4(%struct.ident_t* @0, i32 %17, i32 34, i32*
%8, i32* %5, i32* %6, i32* %7, i32 1, i32 1)
I am able to see it and get the following:
__kmpc_for_static_init_4
%struct.ident_t* %0
i32 %1
i32 %2
i32* %3
i32* %4
i32* %5
i32* %6
i32 %7
i32 %8
The three arguments ( third ( schedule) and the last two; loop increment and
chunk size are constant). The innermost loop should get them but it seems the
test command fails on these three arguments. Also, the argument variable are
different from the actual variable from the *.ll file.
Any comments.
Thanks,
--
Abid M. Malik
******************************************************