Thank you Chris,
for your hint, but I am still too stupid. I tried two versions
asm_arguments.push_back(Type::VoidTy);
FunctionType *asm_type = FunctionType::get(Type::VoidTy, asm_arguments,
false);
Alternatively
FunctionType *asm_type = FunctionType::get(Type::VoidTy, std::vector<const
Type*>(), false);
. Can you give me a snippet of example code, or somebody else?
Thanks for help
Michael
for (BasicBlock::iterator bi = i->begin(), be = i->end(); bi != be; ++bi){
std::vector<const Type*> asm_arguments;
asm_arguments.push_back(Type::VoidTy);
FunctionType *asm_type = FunctionType::get(Type::VoidTy,
asm_arguments, false);
InlineAsm* au = new InlineAsm(asm_type ???,
"isync","~{dirflag},~{fpsr},~{flags}",true);
//CallInst* ae = new CallInst(au ??);
//Works fine
AllocaInst* ai = new AllocaInst(Type::Int16Ty);
Instruction *pi = bi;
pi->getParent()->getInstList().insert(pi, ai);
}
Von: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] Im
Auftrag von Chris Lattner
Gesendet: Freitag, 31. Juli 2009 21:50
An: LLVM Developers Mailing List
Betreff: Re: [LLVMdev] Inserting Instructions (pass)
On Jul 31, 2009, at 10:24 AM, Michael Graumann wrote:
Hi,
I' am trying to insert an InlineAsm Instruction in my pass, which
FunctionType do I need for Inlineasm?
If I understand it right, I need a call instruction to insert the new
produced InlineAsm?
Thanks for help
Inline asm works like a "callee". So for:
call void asm sideeffect "isync",
"~{dirflag},~{fpsr},~{flags}"() nounwind
The thing your calling has type "void()*". You just pass
"void()" into the
InlineAsm ctor.
-Chris
,
Michael
for (BasicBlock::iterator bi = i->begin(), be = i->end(); bi != be; ++bi){
std::vector<const Type*> asm_arguments;
FunctionType *asm_type = FunctionType::get(Type::VoidTy,
asm_arguments, false);
InlineAsm* au = new InlineAsm(asm_type ???,
"isync","~{dirflag},~{fpsr},~{flags}",true);
//CallInst* ae = new CallInst(au ??);
//Works fine
AllocaInst* ai = new AllocaInst(Type::Int16Ty);
Instruction *pi = bi;
pi->getParent()->getInstList().insert(pi, ai);
}
Test.ll
call void asm sideeffect "isync",
"~{dirflag},~{fpsr},~{flags}"() nounwind
llvm::FunctionType
public:
/// FunctionType::get - This static method is the primary way of
constructing
/// a FunctionType.
///
static FunctionType *get(
const Type *Result, ///< The result type, isync is Void
const std::vector<const Type*> &Params, ///< The types of the
parameters
???
bool isVarArg ///< Whether this is a variable argument length function,
isync false?
);
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