[PATCH] D128656: [AMDGPU] gfx11 Generate VOPD Instructions

[Joe Nash via Phabricator via llvm-commits]

Joe_Nash added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/GCNVOPDUtils.cpp:172
+/// Greedily pairs instruction candidates. O(n^2) algorithm.
+struct VOPDPairingMutation : ScheduleDAGMutation {
+  ShouldSchedulePredTy shouldScheduleAdjacent; // NOLINT: function pointer
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rampitec wrote:
> Isn't it the same as MacroFusion?
No. Macrofusion only pairs instructions which are already data dependent (see MacroFusion.cpp:176), while this mutator considers all pairs of instructions. 


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  https://reviews.llvm.org/D128656/new/

https://reviews.llvm.org/D128656