[PATCH] D151655: [LoongArch] Support finer-grained DBAR hints for LA664+

[hev via Phabricator via llvm-commits]

hev added a comment.

Grateful for your contribution.



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Comment at: llvm/test/CodeGen/LoongArch/ir-instruction/load-store-atomic.ll:116
 ; LA64:       # %bb.0:
 ; LA64-NEXT:    amswap_db.w $zero, $a1, $a0
 ; LA64-NEXT:    ret
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Is it better to use `dbar 18` + `store` for LA664 and later micro-architectures?


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Comment at: llvm/test/CodeGen/LoongArch/ir-instruction/load-store-atomic.ll:269
 
 define void @store_seq_cst_i8(ptr %ptr, i8 signext %v) {
 ; LA32-LABEL: store_seq_cst_i8:
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We should use `dbar` with `ordering` kind here.


Repository:
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  https://reviews.llvm.org/D151655/new/

https://reviews.llvm.org/D151655