[X86] Fix BMI uop/throughputs on znver1/znver2
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Sat, 17 Dec 2022 20:38:36 +0000 (20:38 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Sat, 17 Dec 2022 20:38:40 +0000 (20:38 +0000)
commited37234f9be3a257f360c7d1fc33a0391e0be288
tree8275be4b28e2131e5ddd8e6910fd7690ec50896d
parentf43886e7ba5abf9ee8c4d3f0ffbd18eee724466f
[X86] Fix BMI uop/throughputs on znver1/znver2

Most BMI ops are 2uop and 0.5 throughput - interestingly TZCNTrm doesn't take an extra uop but the other instructions do

Confirmed by AMD SoG + Agner
llvm/lib/Target/X86/X86ScheduleZnver1.td
llvm/lib/Target/X86/X86ScheduleZnver2.td
llvm/test/tools/llvm-mca/X86/Znver1/resources-bmi1.s
llvm/test/tools/llvm-mca/X86/Znver2/resources-bmi1.s