History log of /llvm-project-15.0.7/llvm/utils/TableGen/DecoderEmitter.cpp (Results 1 – 5 of 5)
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# 45f3a5aa 30-Jun-2022 Fangrui Song <[email protected]>

[AArch64] Add target feature "all"

This is used by disassemblers: `llvm-mc -disassemble -mattr=` and `llvm-objdump --mattr=`.
The main use case is for llvm-objdump to disassemble all known instructi

[AArch64] Add target feature "all"

This is used by disassemblers: `llvm-mc -disassemble -mattr=` and `llvm-objdump --mattr=`.
The main use case is for llvm-objdump to disassemble all known instructions
(D128030).

In user-facing tools, "all" is intentionally not supported in producers:
integrated assembler (`.arch_extension all`), clang -march (`-march=armv9.3a+all`).
Due to the code structure, `llvm-mc -mattr=+all` `llc -mattr=+all` are not
rejected (they are internal tool). Add `llvm/test/CodeGen/AArch64/mattr-all.ll`
to catch behavior changes.

AArch64SysReg::SysReg::haveFeatures: check `FeatureAll` to print
`AArch64SysReg::SysReg::AltName` for some system registers (e.g. `ERRIDR_EL1, RNDR`).

AArch64.td: add `AssemblerPredicateWithAll` to additionally test `FeatureAll`.
Change all `AssemblerPredicate` (except `UseNegativeImmediates`) to `AssemblerPredicateWithAll`.

utils/TableGen/{DecoderEmitter,SubtargetFeatureInfo}.cpp: support arbitrarily
nested all_of, any_of, and not.

Note: A predicate supports all_of, any_of, and not. For a target (though
currently not for AArch64) an encoding may be disassembled differently with
different target features.
Note: AArch64MCCodeEmitter::computeAvailableFeatures is not available to
the disassembler.

Reviewed By: peter.smith, lenary

Differential Revision: https://reviews.llvm.org/D128029

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Revision tags: llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4
# c644488a 15-May-2022 Sheng <[email protected]>

Rename `MCFixedLenDisassembler.h` as `MCDecoderOps.h`

The name `MCFixedLenDisassembler.h` is out of date after D120958.

Rename it as `MCDecoderOps.h` to reflect the change.

Reviewed By: myhsu

Dif

Rename `MCFixedLenDisassembler.h` as `MCDecoderOps.h`

The name `MCFixedLenDisassembler.h` is out of date after D120958.

Rename it as `MCDecoderOps.h` to reflect the change.

Reviewed By: myhsu

Differential Revision: https://reviews.llvm.org/D124987

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# 2ac3cd20 07-May-2022 River Riddle <[email protected]>

[TableGen] Remove the use of global Record state

This commits removes TableGens reliance on managed static global record state
by moving the RecordContext into the RecordKeeper. The RecordKeeper is

[TableGen] Remove the use of global Record state

This commits removes TableGens reliance on managed static global record state
by moving the RecordContext into the RecordKeeper. The RecordKeeper is now
treated similarly to a (LLVM|MLIR|etc)Context object and is passed to static
construction functions. This is an important step forward in removing TableGens
reliance on global state, and in a followup will allow for users that parse tablegen
to parse multiple tablegen files without worrying about Record lifetime.

Differential Revision: https://reviews.llvm.org/D125276

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# 1284ce91 10-May-2022 Sheng <[email protected]>

[NFC] Modify the comment to reflect the changes in decoder


# df3765bf 02-May-2022 Sheng <[email protected]>

[NFC] Rename `FixedLenDecoderEmitter` as `DecoderEmitter`

Since now we are able to handle both fixed length & variable
length instructions.

Reviewed By: myhsu

Differential Revision: https://review

[NFC] Rename `FixedLenDecoderEmitter` as `DecoderEmitter`

Since now we are able to handle both fixed length & variable
length instructions.

Reviewed By: myhsu

Differential Revision: https://reviews.llvm.org/D123451

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