Displaying 4 results from an estimated 4 matches for "memi".
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mei
2013 Apr 10
0
[LLVMdev] How to call the llvm.prefetch intrinsic ?
Alexandra,
I'm not sure what you mean by "replace", but I have code that does this to insert prefetches:
Type *I8Ptr = Type::getInt8PtrTy((*I)->getContext(), PtrAddrSpace);
Value *PrefPtrValue = ...
IRBuilder<> Builder(MemI);
Module *M = (*I)->getParent()->getParent();
Type *I32 = Type::getInt32Ty((*I)->getContext());
Value *PrefetchFunc = Intrinsic::getDeclaration(M, Intrinsic::prefetch);
Builder.CreateCall4(PrefetchFunc, PrefPtrValue,
ConstantInt::get(I32, MemI->mayReadFro...
2013 Apr 10
2
[LLVMdev] How to call the llvm.prefetch intrinsic ?
Hello,
Can anyone please guide me how can I replace a load instruction with a prefetch. I was looking at the intrinsic creation methods of the IRBuilder, but I can only find functions corresponding to memset, memcpy and memmove intrinsics, not for prefetching.
Also, I target x86-64 architectures. Is it sufficient to insert a call to the intrinsic in the LLVM IR to have the corresponding prefetch
2013 Nov 21
0
How to extract sets of rows (not sorted) from text file in R, do some methods on these rows, save the result in another text file, then pick others set of rows and do the same
...com> wrote:
Hi,
>
>I am not sure I understand you completely. ?Are you applying the same set of methods on each of the groups? ?If yes, then the methods I showed should work. ?If it is not the case, please provide a reproducible example.
>Thanks.
>A.K.
>
><quote author='memi'>
>
>Thanks a lot arun kirshna , but my question was:
>
>I have this input data
>1 2 4 7
>1 4 5 8
>1 4 5 6
>2 3 4 8
>3 6 7 8
>1 5 6 9
>2 5 7 9
>3 7 9 11
>
>I want the output like:
>
>step1: ?from the input data, extract the rows that start with...
2014 Apr 26
2
[LLVMdev] How can I get rid of "OPFL_Chain" in myCPUGenInstrInfo.inc
hi Tim,guys,
it was regarding splitting 16-bit ADDC to two 8-bit ADDC+ADDE.
the 8-bit ADDE instruction is defined as:
let Constraints="$dst=$op0",mayStore=1,
hasSideEffects=0,neverHasSideEffects=1 in
def ADDErm: myInstr
<0x0,
(outs Intregs:$dst) (ins Intregs:$op0,MEMi:$op1),
"",
[set IntRegs:$dest (adde IntRegs:$op0, (load ADDRi:$op1))]
>
very unlucky, this instruction failed.
in the generated match table, there was flag OPFL_Chain.
it caused a token factor node to be created in switch case
OPC_EmitMergeInputChains in SelectCodeCommon.
very bad...