https://bugs.llvm.org/show_bug.cgi?id=35675
Bug ID: 35675
Summary: [X86] A few gather instructions seem to have bogus
scheduling info on skylake server
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: craig.top...@gmail.com
CC: llvm-bugs@lists.llvm.org
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")>;
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