Displaying 2 results from an estimated 2 matches for "agsi".
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agi
2016 Apr 27
2
phys reg liveness during foldMemoryOperandImpl()
...pass around a reference to LiveIntervalAnalysis*. Patches welcome :)
- Matthias
> On Apr 27, 2016, at 11:38 AM, Jonas Paulsson via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> ping.
>
> Either this can be implemented easily, or the current SystemZ optimization LAY -> AGSI in foldMemoryOperandImpl() should be removed, since this is actually illegal.
>
> /Jonas
>
> On 2016-04-15 12:53, Jonas Paulsson wrote:
>> Hi,
>>
>> I wonder if it would be possible to extend foldMemoryOperandImp() so that targets can check for liveness of a particu...
2016 Apr 15
2
phys reg liveness during foldMemoryOperandImpl()
Hi,
I wonder if it would be possible to extend foldMemoryOperandImp() so
that targets can check for liveness of a particular phys reg?
The case I am thinking of is when the new instruction clobbers the CC
reg, while the old one did not. In this case the new instruction can
only become a replacement if the CC reg is known to be dead.
The idea is that liveness of phys regs should be available