Displaying 3 results from an estimated 3 matches for "calleepreserved".
2016 Aug 05
2
A thought to improve IPRA
...ibleForTailCallOptimization() has this part:
// The callee has to preserve all registers the caller needs to preserve.
const X86RegisterInfo *TRI = Subtarget.getRegisterInfo();
const uint32_t *CallerPreserved = TRI->getCallPreservedMask(MF, CallerCC);
if (!CCMatch) {
const uint32_t *CalleePreserved = TRI->getCallPreservedMask(MF, CalleeCC);
if (!TRI->regmaskSubsetEqual(CallerPreserved, CalleePreserved))
return false;
}
which usually checks that this is fine. Maybe that code looks at the regmask of the calling convention rather than the new regmask computed by IPRA?
- Matth...
2016 Aug 16
2
A thought to improve IPRA
...callee has to preserve all registers the caller needs to
>> preserve.
>> const X86RegisterInfo *TRI = Subtarget.getRegisterInfo();
>> const uint32_t *CallerPreserved = TRI->getCallPreservedMask(MF,
>> CallerCC);
>> if (!CCMatch) {
>> const uint32_t *CalleePreserved = TRI->getCallPreservedMask(MF,
>> CalleeCC);
>> if (!TRI->regmaskSubsetEqual(CallerPreserved, CalleePreserved))
>> return false;
>> }
>>
>> Thanks MatzeB for pointing this out.
>
>> which usually checks that this is fine. Maybe that co...
2016 Jul 29
2
A thought to improve IPRA
----- Original Message -----
> From: "vivek pandya" <vivekvpandya at gmail.com>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: "llvm-dev" <llvm-dev at lists.llvm.org>, "Quentin Colombet"
> <qcolombet at apple.com>, "Mehdi Amini" <mehdi.amini at apple.com>
> Sent: Friday, July 29, 2016 5:02:44 AM
>