Commit 80941193 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] IceLakeServer - ZMM FMA can only use Port0 

Fix discrepancy from when this was forked from the SkylakeServer model

Confirmed with Agner + uops.info
parent 1de5fe18

llvm/lib/Target/X86/X86SchedIceLake.td

+1 −1
Original line number Diff line number Diff line
@@ -316,7 +316,7 @@ defm : ICXWriteResPair<WriteFRsqrtZ,[ICXPort0,ICXPort5], 9, [2,1], 3, 7>; 
defm : ICXWriteResPair<WriteFMA,  [ICXPort01],  4, [1], 1, 5>; // Fused Multiply Add.

defm : ICXWriteResPair<WriteFMAX, [ICXPort01],  4, [1], 1, 6>;

defm : ICXWriteResPair<WriteFMAY, [ICXPort01],  4, [1], 1, 7>;

defm : ICXWriteResPair<WriteFMAZ, [ICXPort05],  4, [1], 1, 7>;

defm : ICXWriteResPair<WriteFMAZ, [ICXPort0],   4, [1], 1, 7>;

defm : ICXWriteResPair<WriteDPPD, [ICXPort5,ICXPort015],  9, [1,2], 3, 6>; // Floating point double dot product.

defm : ICXWriteResPair<WriteDPPS, [ICXPort5,ICXPort015], 13, [1,3], 4, 6>;

defm : ICXWriteResPair<WriteDPPSY,[ICXPort5,ICXPort015], 13, [1,3], 4, 7>;

llvm/test/tools/llvm-mca/X86/IceLakeServer/resources-avx512.s

+109 −109

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