Displaying 8 results from an estimated 8 matches for "createxyz".
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2015 Apr 17
2
[LLVMdev] how to use "new instruction()"
...cause if might be add/sub/mul... operations.
>
> I don't think there is. Realistically, just blindly replacing
> instructions with vector equivalents is only going to work in a few
> cases anyway. You're probably best to intentionally detect those cases
> and call the correct CreateXYZ function.
>
> Cheers.
>
> Tim.
>
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2015 Apr 17
2
[LLVMdev] how to use "new instruction()"
Value * is the instruction.
use dyn_cast<Instruction> to get to it.
On Thu, Apr 16, 2015 at 11:39 PM zhi chen <zchenhn at gmail.com> wrote:
> But IRBuilder.CreateXYZ only returns a "VALUE" type. Can I get the
> instruction created by it? For example,
>
> IRBuilder<> builder(&*pinst);
> Value *val = builder.CreateFAdd(LV, RV, "");
>
> How can I get the fadd instruction created by builder?
>
> On Thu, Apr 16,...
2015 Apr 17
2
[LLVMdev] how to use "new instruction()"
...el Berlin <dberlin at dberlin.org>
> wrote:
>
>> Value * is the instruction.
>>
>> use dyn_cast<Instruction> to get to it.
>>
>>
>> On Thu, Apr 16, 2015 at 11:39 PM zhi chen <zchenhn at gmail.com> wrote:
>>
>>> But IRBuilder.CreateXYZ only returns a "VALUE" type. Can I get the
>>> instruction created by it? For example,
>>>
>>> IRBuilder<> builder(&*pinst);
>>> Value *val = builder.CreateFAdd(LV, RV, "");
>>>
>>> How can I get the fadd instructio...
2015 Apr 17
2
[LLVMdev] how to use "new instruction()"
...the instruction.
>>
>> use dyn_cast<Instruction> to get to it.
>>
>>
>> On Thu, Apr 16, 2015 at 11:39 PM zhi chen <zchenhn at gmail.com
>> <mailto:zchenhn at gmail.com>> wrote:
>>
>> But IRBuilder.CreateXYZ only returns a "VALUE" type. Can I
>> get the instruction created by it? For example,
>>
>> IRBuilder<> builder(&*pinst);
>> Value *val = builder.CreateFAdd(LV, RV, "");
>>
>> How can I...
2018 Jan 16
0
Why do backend pass definitions call a seperate function just to call the constructor?
...g it this way instead of just calling `new
> ARMExpandPseudo` in any place that you would have called this function?
Mostly it's so that everything that relies on knowing the class
definition and layout is restricted to a single file. The interface to
the rest of LLVM is just a single "createXYZ" standalone function.
That speeds up build times and is generally good for abstraction.
Cheers.
Tim.
2018 Jan 16
2
Why do backend pass definitions call a seperate function just to call the constructor?
Things like this in `lib/Target/ARM/ARMExpandPseudoInsts.cpp`
FunctionPass *llvm::createARMExpandPseudoPass() {
> return new ARMExpandPseudo();
> }
And other functions have basically the same style.
What's the point of doing it this way instead of just calling `new
ARMExpandPseudo` in any place that you would have called this function?
--
Ahmed Samara
M.S. Computer Engineering
2015 Apr 17
2
[LLVMdev] how to use "new instruction()"
...>> On Thu, Apr 16, 2015 at 11:39 PM zhi chen
>> <zchenhn at gmail.com <mailto:zchenhn at gmail.com>
>> <mailto:zchenhn at gmail.com <mailto:zchenhn at gmail.com>>> wrote:
>>
>> But IRBuilder.CreateXYZ only returns a "VALUE"
>> type. Can I
>> get the instruction created by it? For example,
>>
>> IRBuilder<> builder(&*pinst);
>> Value *val = builder.CreateFAdd(LV, RV, "&quo...
2015 Apr 17
3
[LLVMdev] how to use "new instruction()"
Thanks, Tim. What I want to do is to change the scalar instructions to
scalar ones.
For example, if I have to the following one:
%3 = fadd double %1, double %2
I want to change it into
%6 = fadd <2 x double> %4, double %2.
I understand that I can detect the operation first, and use "create" to
create for each of them. But I don't if there is a generic way to do this
because