[PATCH] D93594: [X86] Pass to transform amx intrinsics to scalar operation.

[Bing Yu via Phabricator via cfe-commits]

yubing added inline comments.


================
Comment at: llvm/lib/Target/X86/X86LowerAMXIntrinsics.cpp:211-212
+                                    IRBuilderBase &B, DomTreeUpdater &DTU,
+                                    LoopInfo &LI, Value *Row, Value *Col,
+                                    Value *K, Value *Acc, Value *LHS,
+                                    Value *RHS) {
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xiangzhangllvm wrote:
> In fact, no need handle Row, Col, K here, just use fix size 16x16, the result of calculation is some in effective area. (just need tileload "keep" the "unused" area is 0). 
> Then can use vector to handle all of the them, let type legalization to split the type.
We should keep the code here. In bf16,  since +0.0(0x0000) * negative float is equal to -0.0(0x8000), following your solution is not able to ensure outer edge is allzero.


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  https://reviews.llvm.org/D93594/new/

https://reviews.llvm.org/D93594