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193 Commits

Author SHA1 Message Date
Benjamin Bouvier
627ba24b59 Simplify jump table instructions and add missing conversion; 
This makes non-legalized jump table instructions operate on operands with
pointer-sized types. This means we need to extend smaller types into the
pointer-sized operand, when the two don't match.
 2019-08-02 18:39:39 +02:00
Dan Gohman
16e16c49a7 Bump version to 0.37.0 2019-07-27 04:50:19 -07:00
Dan Gohman
4641fdd302 Bump version to 0.36.0 2019-07-19 16:28:40 -07:00
Andrew Brown
084e279def Add x86 implementation of splat instruction 2019-07-16 17:07:44 -07:00
Andrew Brown
3b36a1d1d8 Add x86 implementation of insertlane instruction 2019-07-16 17:07:44 -07:00
Andrew Brown
683e7c75a3 Add x86-specific shuffle instructions 
This includes both PSHUFD and PSHUFB; these are necessary to legalize future SIMD instructions.
 2019-07-16 17:07:44 -07:00
Andrew Brown
61772e9775 Add raw_bitcast instruction 
Casts bits as a different type of the same width with no change to the data (unlike bitcast)
 2019-07-16 17:07:44 -07:00
Andrew Brown
5f0e5567c1 Add scalar_to_vector instruction 
Moves scalar values in a GPR register to an FPR register
 2019-07-16 17:07:44 -07:00
Andrew Brown
356e6dafe2 Allow CDSL instructions to bind to vector types 2019-07-16 17:07:44 -07:00
Andrew Brown
659725b465 Add x86-specific SIMD settings, e.g. SSE2 
Also, ties SIMD ISA predicates to the shared enable_simd setting
 2019-07-16 17:07:44 -07:00
Andrew Brown
f2c48009e8 Disable SIMD features by default 2019-07-16 17:07:44 -07:00
Andrew Brown
8378297f33 Prepare legalizer codegen for SIMD features 
Contains fixes from @bnjbvr to codegen as a part of https://github.com/bnjbvr/cranelift/pull/2; necessary for SIMD features to work
 2019-07-16 17:07:44 -07:00
Dan Gohman
67dd0b5015 Bump version to 0.35.0 2019-07-12 15:48:19 -07:00
Benjamin Bouvier
bfc1468688 [docs] Don't accidentally generate doc tests; 2019-07-11 11:48:45 +02:00
Benjamin Bouvier
062ed8f6ea [docs] Remove rst annotations in instructions doc comments; 2019-07-11 11:48:45 +02:00
Benjamin Bouvier
d5b80b2803 [meta] Generate full documentation for instructions in InstBuilder; 2019-07-11 11:48:45 +02:00
Benjamin Bouvier
84a6795873 [meta] Riscv: add back stacknull encodings for copy_nop; 2019-07-10 17:51:09 +02:00
Dan Gohman
59f6c81e4f Bump version to 0.34.0 2019-07-09 12:31:58 -07:00
Benjamin Bouvier
41a3d88b37 Fixes #837: Use an u64 comparison instead of a usize comparison in meta; 2019-07-09 18:15:30 +02:00
Benjamin Bouvier
56f6908020 [meta] Legalization: Don't generate a variable for replaced instructions; 
(since they're unused)
 2019-07-09 10:56:50 +02:00
Benjamin Bouvier
cd4c28ad97 [meta] Legalization: Unprefix some module paths to make code neater; 2019-07-09 10:56:50 +02:00
Benjamin Bouvier
15d8b95e72 [meta] Legalization: remove spurious Option wrapping for type variables; 2019-07-09 10:56:50 +02:00
Benjamin Bouvier
f1222dce10 [meta] Legalization: emit typeof type variables for results in all the cases; 2019-07-09 10:56:50 +02:00
Benjamin Bouvier
4fef03f5f8 [meta] Legalization: remove spurious assert; 
This assert was added when porting legalization from Python to Rust and
doesn't hold when we have derived type variables.
 2019-07-09 10:56:50 +02:00
Benjamin Bouvier
88307f693a [meta] Generate the encodings files; 2019-07-05 17:50:17 +02:00
Benjamin Bouvier
f574ab8703 [meta] Generate the binemits files; 
Co-authored-by: Benjamin Bouvier <public@benj.me>
Co-authored-by: bjorn3 <bjorn3@users.noreply.github.com>
 2019-07-05 17:50:17 +02:00
Benjamin Bouvier
fd03677292 [meta] Recipes and encodings descriptions for x86; 2019-07-05 11:38:51 +02:00
Benjamin Bouvier
ca277422bb [meta] Recipes and encodings descriptions for RiscV; 2019-07-05 11:38:51 +02:00
Benjamin Bouvier
21aaf0c89f [meta] Add cdsl facilities for encodings and recipes; 
Co-authored-by: Benjamin Bouvier <public@benj.me>
Co-authored-by: bjorn3 <bjorn3@users.noreply.github.com>
 2019-07-05 11:38:51 +02:00
Benjamin Bouvier
4a6b88193e [meta] Map global TransformGroup to local TransformGroup indices; 2019-07-04 16:38:28 +02:00
Benjamin Bouvier
1e42aac41a [meta] Add new instruction predicates and the InstructionPredicateMap; 
The latter helps deduplicating predicates during encodings and recipes
construction.
 2019-07-04 16:38:28 +02:00
Dan Gohman
a3e459269e Bump version to 0.33.0 2019-07-03 10:40:58 -07:00
Benjamin Bouvier
e34a4759cd [meta] Fix typo in x86 setting name use_lzcnt; 2019-07-03 18:39:28 +02:00
Benjamin Bouvier
ec5678ab7a [meta] Add the ability to bind any type to an instruction; 2019-07-03 18:39:28 +02:00
Benjamin Bouvier
9dcc185264 [meta] Add a MapWithDefault trait; 
This traits augments HashMap so they have a `get_or_default` method that
can be used to avoid boilerplate around usage of `entry.or_default`.
 2019-07-03 18:39:28 +02:00
Benjamin Bouvier
18fb87cd9c [meta] Refactor instruction predicates to distinguish format and type checks; 
Also add the instruction format name in format predicates, since they're
going to be used when generating encodings.
 2019-07-03 18:39:28 +02:00
Benjamin Bouvier
f1d1d1e960 [meta] Uniquely number every instruction in the Rust crate; 2019-07-03 18:39:28 +02:00
Dan Gohman
b35227b417 Bump version to 0.32.0 2019-07-02 12:27:39 -07:00
Dan Gohman
4b924d34b6 Bump version to 0.31.0 2019-06-28 11:37:39 -07:00
Benjamin Bouvier
83336290c2 Mark the jump_table_entry Instruction as loading; 2019-06-27 17:38:20 +02:00
Benjamin Bouvier
d7d48d5cc6 Add the dyn keyword before trait objects; 2019-06-24 11:42:26 +02:00
Benjamin Bouvier
70f79d23bf [meta] Make Builders build() instead of finish(); 2019-05-29 14:05:01 +02:00
Benjamin Bouvier
d9277f249b [meta] Introduce the InstructionGroupBuilder; 
This follows the rest of the code base data structures, where we have a
mutable data structure builder; once the data structure is constructed,
it's immutable.

This also makes the definition of instructions easier, and it paves the
way for defining immediate variants.
 2019-05-29 14:05:01 +02:00
Benjamin Bouvier
feb90e376a [meta] Make Instruction name/doc Strings so they can be automatically generated; 2019-05-29 14:05:01 +02:00
Benjamin Bouvier
22a6823496 [meta] Rename cdsl/inst to cdsl/instructions; 2019-05-29 14:05:01 +02:00
Julian Seward
03368895fe Cranelift: Redundant stack-slot-to-stack-slot copy removal. PR#773. 
This is also https://bugzilla.mozilla.org/show_bug.cgi?id=1552737.

Cranelift currently has a tendency to create redundant copies (self-copies) of
values from a stack slot back to the same stack slot.  This generates a
pointless load and store and an unnecessary register use.  The copies are
created by `visit_inst` in regalloc/reload.rs.  They appear to occur mostly,
but not exclusively, at loop heads.  It's unclear why this happens.

This patch adds a special case to `visit_inst` to find such copies.  They are
converted into a new instruction, `copy_nop`, which takes and produces the
same SSA names, so as not to break any of the SSA invariants, but which has a
zero-length encoding, hence removing the copy at emission time.

`copy_nop`s source and destination operands must be stack slots and of course
the *same* stack slot.  The verifier has been enhanced to check this, since
misuse of `copy_nop` will likely lead to hard-to-find incorrect-code bugs.

Attempts were made to write a standalone .clif test case.  But these failed
because it appears the .clif parser accepts but ignores location hints that
are stack slots.  So it's impossible to write, in clif, the exact form of
`copy` instruction that triggers the transformation.
 2019-05-27 13:55:48 +02:00
Benjamin Bouvier
6935033c9e [meta] Have bind() be a method of {Bound,}Instruction instead of a static method; 2019-05-23 14:31:00 +02:00
Benjamin Bouvier
724d1cd2a1 [meta] Rename ApplyTarget to InstSpec; 2019-05-23 14:31:00 +02:00
Benjamin Bouvier
a46b2d7173 [meta] Move ApplyTarget/bind to cdsl/inst; 2019-05-23 14:31:00 +02:00
Benjamin Bouvier
cbbb7a220e [meta] Move x86 registers generation to their own file; 2019-05-22 10:55:02 +02:00