[REFACTOR][IR] Introduce SeqStmt to replace ir::Block #4627
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ZihengJiang
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Jan 6, 2020
ir::Block was used to represent a sequence of Stmts in the original low-level IR. The nested ir::Block structure is not really friendly for recursive visits, especially when the statements are unrolled. This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container. The new SeqStmt will be used as a replacement of the original Block structure.
yzhliu
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Jan 6, 2020
include/tvm/ir.h
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| return (*(operator->()))[index]; | ||
| } | ||
| /*! | ||
| * \brief Construct a flattened sequence statement. |
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more specifically, it is to flatten a consumer? can we elaborate a bit in the comment why this is useful?
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The consumer tag was not as useful as producers and can in general be dropped. This was the original behavior that we used to had in Flattening sequences. Once we uprgade to the versions the Producer consumer markup may cease to be useful, so we can safely remove that part
Hzfengsy
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Jan 6, 2020
yzhliu
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Jan 6, 2020
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Thanks @yzhliu @Hzfengsy @ZihengJiang |
alexwong
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* [REFACTOR][IR] Introduce SeqStmt to replace Block ir::Block was used to represent a sequence of Stmts in the original low-level IR. The nested ir::Block structure is not really friendly for recursive visits, especially when the statements are unrolled. This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container. The new SeqStmt will be used as a replacement of the original Block structure. * [REFACTOR] Migrate use of Block to SeqStmt. * [REFACTOR] Remove Block * Add more comments per yizhi's comment
alexwong
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* [REFACTOR][IR] Introduce SeqStmt to replace Block ir::Block was used to represent a sequence of Stmts in the original low-level IR. The nested ir::Block structure is not really friendly for recursive visits, especially when the statements are unrolled. This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container. The new SeqStmt will be used as a replacement of the original Block structure. * [REFACTOR] Migrate use of Block to SeqStmt. * [REFACTOR] Remove Block * Add more comments per yizhi's comment
zhiics
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* [REFACTOR][IR] Introduce SeqStmt to replace Block ir::Block was used to represent a sequence of Stmts in the original low-level IR. The nested ir::Block structure is not really friendly for recursive visits, especially when the statements are unrolled. This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container. The new SeqStmt will be used as a replacement of the original Block structure. * [REFACTOR] Migrate use of Block to SeqStmt. * [REFACTOR] Remove Block * Add more comments per yizhi's comment
tqchen
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* [REFACTOR][IR] Introduce SeqStmt to replace Block ir::Block was used to represent a sequence of Stmts in the original low-level IR. The nested ir::Block structure is not really friendly for recursive visits, especially when the statements are unrolled. This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container. The new SeqStmt will be used as a replacement of the original Block structure. * [REFACTOR] Migrate use of Block to SeqStmt. * [REFACTOR] Remove Block * Add more comments per yizhi's comment
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ir::Block was used to represent a sequence of Stmts in the original low-level IR.
The nested ir::Block structure is not really friendly for recursive visits,
especially when the statements are unrolled.
This PR introduce a SeqStmt that directly stores a sequence of statements in an Array container.
The new SeqStmt will be used as a replacement of the original Block structure.