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[RemoveLayoutConversions] Remove PatternSharedInfo structure (#378)

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This structure is not used anymore after massive refactoring
of RemoveLayoutConversion pass in September IFU.
This commit is contained in:
Alexander Efimov
2023-11-01 18:57:35 +01:00
committed by GitHub
parent 9517d4c256
commit d62a3ffdbe
1 changed files with 0 additions and 18 deletions
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18
lib/Dialect/TritonGPU/Transforms/RemoveLayoutConversions.cpp
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@@ -27,24 +27,6 @@ using triton::gpu::DotOperandEncodingAttr;
using triton::gpu::MmaEncodingAttr;
using triton::gpu::SliceEncodingAttr;
struct PatternSharedInfo {
// If a conversion cannot be eliminated with a high-benefit pattern (e.g.,
// SimplifyConversion, RematerializeBackward), it will be pushed forward in
// the hope that this will enable the elimination of these conversions later.
// However, pushing a conversion forward can introduce more conversions
// (op(cvt(arg_0), arg_1, ..., arg_n) -> cvt(op(arg_0, cvt(arg_1), ...,
// cvt(arg_n))). This is why the RematerializeForward pattern performs an
// analysis to determine whether these added conversions can be eliminated
// later. The RematerializeBackward pattern, applied after pushing this
// conversion forward, will eliminate these newly added conversions by
// reversing the process achieved with RematerializeForward. This can create
// an infinite loop between these two optimizations. To avoid this, we keep
// track of the conversions that were pushed forward and skip them in the
// RematerializeBackward pattern. A similar kind of loop can occur with the
// RematerializeForward and MoveConvertOutOfLoop patterns.
llvm::DenseMap<Operation *, Operation *> cvtsPushedForwardMap;
};
// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------