llvm-project

Author SHA1 Message Date

Author	SHA1	Message	Date
chuongg3	d58bd21150	[GlobalISel] Look between instructions to be matched (#101675 ) When a pattern is matched in TableGen, a check is run called isObviouslySafeToFold(). One of the condition that it checks for is whether the instructions that are being matched are consecutive, so the instruction's insertion point does not change. This patch allows the movement of the insertion point of a load instruction if none of the intervening instructions are stores or have side-effects.	2024-08-27 16:56:40 +01:00
pvanhout	63afb70503	[RFC][GlobalISel] Overhauled MIR Patterns Support for Combiners See https://discourse.llvm.org/t/rfc-overhauled-mir-patterns-for-globalisel-combiners/72264 This is a complete overrhaul of the recently-added GlobalISel Match Table backend which adds support for MIR patterns for both match and apply patterns. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D156315	2023-08-11 08:54:56 +02:00
pvanhout	1fe7d9c799	[GlobalISel] Generalize `InstructionSelector` Match Tables Makes `InstructionSelector.h`/`InstructionSelectorImpl.h` generic so the match tables can also be used for the combiner. Some notes: - Coverage was made an optional parameter of `executeMatchTable`, combines won't use it for now. - `GIPFP_` -> `GICXXPred_` so it's more generic. Those are just C++ predicates and aren't PatFrag-specific. - Pass the MatcherState directly to testMIPredicate_MI, the combiner will need it. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D153755	2023-07-11 09:42:30 +02:00

chuongg3

d58bd21150

[GlobalISel] Look between instructions to be matched (#101675 )

When a pattern is matched in TableGen, a check is run called
isObviouslySafeToFold(). One of the condition that it checks for is
whether the instructions that are being matched are consecutive, so the
instruction's insertion point does not change.

This patch allows the movement of the insertion point of a load
instruction if none of the intervening instructions are stores or have
side-effects.

2024-08-27 16:56:40 +01:00

pvanhout

63afb70503

[RFC][GlobalISel] Overhauled MIR Patterns Support for Combiners

See https://discourse.llvm.org/t/rfc-overhauled-mir-patterns-for-globalisel-combiners/72264

This is a complete overrhaul of the recently-added GlobalISel Match Table backend which adds
support for MIR patterns for both match and apply patterns.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D156315

2023-08-11 08:54:56 +02:00

pvanhout

1fe7d9c799

[GlobalISel] Generalize InstructionSelector Match Tables

Makes `InstructionSelector.h`/`InstructionSelectorImpl.h` generic so the match tables can also be used for the combiner.

Some notes:
 - Coverage was made an optional parameter of `executeMatchTable`, combines won't use it for now.
 - `GIPFP_` -> `GICXXPred_` so it's more generic. Those are just C++ predicates and aren't PatFrag-specific.
 - Pass the MatcherState directly to testMIPredicate_MI, the combiner will need it.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D153755

2023-07-11 09:42:30 +02:00

3 Commits