[X86] A few gather instructions seem to have bogus scheduling info on skylake server

[topperc]

Bugzilla Link	35675
Resolution	FIXED
Resolved on	Feb 06, 2020 10:50
Version	trunk
OS	All
Depends On	#36254
Blocks	#31672
CC	@legrosbuffle,@gchatelet,@RKSimon
Fixed by commit(s)	c6bdd8e

Extended Description

I have trouble believing that 0 microops and no port binding is correct for these.

def SKXWriteResGroup214 : SchedWriteRes<[]> {
let Latency = 20;
let NumMicroOps = 0;
}
def: InstRW<[SKXWriteResGroup214], (instregex "VGATHERDPSZ128rm")>;
def: InstRW<[SKXWriteResGroup214], (instregex "VGATHERQPSZrm")>;
def: InstRW<[SKXWriteResGroup214], (instregex "VPGATHERDDZ128rm")>;

[RKSimon]

Clement/Guillaume - any chance that llvm-exegesis can determine the correct resources/microops please?

[legrosbuffle]

I still need to get memory support checked-in, but after that, yes.

[RKSimon]

*** Bug llvm/llvm-bugzilla-archive#41686 has been marked as a duplicate of this bug. ***

[topperc]

Fixed by c6bdd8e

[llvmbot]

mentioned in issue #36254

[RKSimon]

mentioned in issue llvm/llvm-bugzilla-archive#41686