Commit Graph

14 Commits

Author SHA1 Message Date
Ryan Hunt
832666c45e Mass rename Ebb and relatives to Block (#1365)
* Manually rename BasicBlock to BlockPredecessor

BasicBlock is a pair of (Ebb, Inst) that is used to represent the
basic block subcomponent of an Ebb that is a predecessor to an Ebb.

Eventually we will be able to remove this struct, but for now it
makes sense to give it a non-conflicting name so that we can start
to transition Ebb to represent a basic block.

I have not updated any comments that refer to BasicBlock, as
eventually we will remove BlockPredecessor and replace with Block,
which is a basic block, so the comments will become correct.

* Manually rename SSABuilder block types to avoid conflict

SSABuilder has its own Block and BlockData types. These along with
associated identifier will cause conflicts in a later commit, so
they are renamed to be more verbose here.

* Automatically rename 'Ebb' to 'Block' in *.rs

* Automatically rename 'EBB' to 'block' in *.rs

* Automatically rename 'ebb' to 'block' in *.rs

* Automatically rename 'extended basic block' to 'basic block' in *.rs

* Automatically rename 'an basic block' to 'a basic block' in *.rs

* Manually update comment for `Block`

`Block`'s wikipedia article required an update.

* Automatically rename 'an `Block`' to 'a `Block`' in *.rs

* Automatically rename 'extended_basic_block' to 'basic_block' in *.rs

* Automatically rename 'ebb' to 'block' in *.clif

* Manually rename clif constant that contains 'ebb' as substring to avoid conflict

* Automatically rename filecheck uses of 'EBB' to 'BB'

'regex: EBB' -> 'regex: BB'
'$EBB' -> '$BB'

* Automatically rename 'EBB' 'Ebb' to 'block' in *.clif

* Automatically rename 'an block' to 'a block' in *.clif

* Fix broken testcase when function name length increases

Test function names are limited to 16 characters. This causes
the new longer name to be truncated and fail a filecheck test. An
outdated comment was also fixed.
2020-02-07 10:46:47 -06:00
Benjamin Bouvier
cbbd94db02 Allow wrap-around when subtracting type size to immediate in try_fold_extended_move; 2019-10-08 20:16:48 +02:00
Benjamin Bouvier
cad2074587 [codegen] Don't simplify an operation if it would result in unnecessary legalization;
Converting something like iadd.i64 on a 32-bits architecture into a
iadd_imm.i64 will result in the instruction being legalized back to an
iadd.i64 later on, creating unnecessary churn.

This commit implements avoid doing so, and changes the target ISA to a
64-bits platform for tests than ran into this, as well as making sure
this won't happen on 32-bits platforms.
2019-09-10 19:50:34 +02:00
Benjamin Bouvier
b659262d2a Use aliasing instead of copying in simple_preopt; 2019-08-16 10:41:51 -07:00
iximeow
6e57e3f8f3 preopt: use replaced arg after having replaced BinaryImm
when replacing BinaryImm, we use the prior arg, but later use the arg
that was replaced when writing an alias if we can determine the new op
is actually equivalent to a simple copy
2019-08-01 11:00:37 +02:00
Benjamin Bouvier
23ac723d4c Simple preopt: fold instructions using simple algebraic identities; 2019-07-31 17:42:05 +02:00
Benjamin Bouvier
2fef2eef67 Simple preopt: try to fold right-shift of left-shift into an extended move; 2019-07-31 17:42:05 +02:00
Tyler McMullen
1090dc5069 Switch from fallthrough back to jump. 2019-04-17 13:15:41 +02:00
Tyler McMullen
5596b5fadc Address code review comments, simplifying some bits of branch_opt. 2019-04-17 13:15:41 +02:00
Tyler McMullen
fd6940baaf Switch branch order opt from brif/brff to br_icmp, as that's what frontends should produce. 2019-04-17 13:15:41 +02:00
Tyler McMullen
571b87414f Switch ifcmp+brif folding to be icmp+brz folding, which is what frontends actually produce. 2019-04-17 13:15:41 +02:00
Tyler McMullen
89a2dd9414 Add tests for branch order and branch comparison folding. 2019-04-17 13:15:41 +02:00
Tyler McMullen
fc6876c68e Fold 'ifcmp_imm' + 'brif' where imm is zero and cond is 'eq' or 'ne', into 'brz' or 'brnz'. 2019-04-17 13:15:41 +02:00
lazypassion
747ad3c4c5 moved crates in lib/ to src/, renamed crates, modified some files' text (#660)
moved crates in lib/ to src/, renamed crates, modified some files' text (#660)
2019-01-28 15:56:54 -08:00