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50 Commits

Author SHA1 Message Date
Donny/강동윤
286334c4d0
feat(es/minifier): Drop vars from sequential inliner (#5993) 
**Description:**

This PR renames `CloningMultiReplacer` to `Finalizer` and makes it handle the removal of unused variables. Also, this PR improves the sequential inliner so we can drop variables within a single pass.
 2022-09-30 09:43:31 +00:00
Donny/강동윤
aeb7f300a8
feat(es/minifier): Invoke sequential inliner for inlined IIFEs (#5991) 
**Description:**

Inlined IIFEs have the exact pattern sequential inliner wants, so it's good to invoke it.
 2022-09-29 11:03:06 +00:00
Donny/강동윤
f8358fbe2b
fix(es/minifier): Remove wrong variable joiner pass (#5992) 
**Description:**

We had two passes for joining variables. This PR removes one in the full optimizer, which is wrong.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5989.
 2022-09-29 19:11:18 +09:00
Donny/강동윤
0cfc724018
test(es/minifier): Add tests for benchmark files (#5986) 2022-09-29 09:41:13 +09:00
Donny/강동윤
97647861bf
fix(es/minifier): Track aliasing via assignments (#5940) 2022-09-23 14:22:41 +09:00
Donny/강동윤
e9c704182b
feat(es/minifier): Improve analysis of reassignments (#5931) 2022-09-22 10:22:18 +00:00
Donny/강동윤
e303f7e853
fix(es/minifier): Fix analysis of assignments (#5924) 
**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5910
 2022-09-21 11:33:25 +00:00
Donny/강동윤
1df72430a5
perf(es/minifier): Invoke DCE only before the first compression (#5907) 
**Description:**

Invoke DCE only before the first compression. I verified that this patch does not affect the compression rate of the real-world inputs greatly.
 2022-09-20 15:41:26 +09:00
Donny/강동윤
4e656af1ec
feat(es/minifier): Drop variable from the sequential inliner (#5896) 
**Description:**

We now drop variable declarations if we are going to eliminate the only usage.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5693.
 2022-09-19 07:40:04 +00:00
IWANABETHATGUY
7d6d04b421
fix(es/codegen): Drop the last comma in an array literal (#5877) 
**Description:**

Drop the last comma in an array literal.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5692.
 2022-09-16 15:48:28 +09:00
Austaras
8567a38c4a
feat(es/minifier): Extend inlining of identifiers to multi-usage (#5832) 2022-09-13 03:52:47 +00:00
Austaras
ee26337a25
feat(es/minifier): Inline lazily initialized variables (#5737) 
Safety:

For a function-local variable, an expression with side-effects would be a call, including an indirect one with a member expression.

 - If the call is function-local, it will be analyzed by the analyzer and inliner will not work.
 - If the call is not a function-local one, it cannot modify the local variable.
 2022-09-08 08:07:43 +00:00
Austaras
90852f5aa6
fix(es/minifier): Fix analysis of assignments and classes (#5770) 2022-09-07 03:51:42 +00:00
Donny/강동윤
8827c38faf
feat(es/minifier): Make DCE single-pass (#5699) 2022-09-01 16:30:21 +00:00
Donny/강동윤
d43334eb92
feat(es/minifier): Remove redundant check (#5664) 2022-08-30 12:22:18 +09:00
Austaras
ca21fd0c4d
fix(es/minifier): Inline vars declared in conditional paths (#5392) 2022-08-05 13:25:28 +00:00
Austaras
11f495ad37
fix(es/minifier): Check if an inlined value is mutated (#5318) 2022-07-29 04:49:09 +00:00
Donny/강동윤
0e4a03ccc6
fix(es/minifier): Don't inline a callable expression if it's used as a reference (#5118) 2022-07-06 03:53:11 +00:00
Donny/강동윤
36d960c7e9
perf(es/hygiene): Make hygiene faster (#4952) 2022-06-15 14:36:57 +00:00
magic-akari
594089488b
feat(es/minifier): Drop new token if possible (#4932) 2022-06-11 05:27:13 +00:00
Austaras
83ae6a1f1f
feat(es/minifier): Remove extra parens in BinExpr (#4878) 2022-06-05 05:52:22 +00:00
Donny/강동윤
49b3c2715c
refactor(es/minifier): Make rust-analyzer fast, really (#4746) 2022-05-23 16:16:05 +09:00
Donny/강동윤
47e6cc5190
refactor(es/minifier): Make rust-analyzer faster (#4744) 
- We now use a separate crate for testing the minifier. This makes IDE much faster.
 2022-05-23 15:53:01 +09:00
Donny/강동윤
c01476d9ae
feat(es/minifier): Enable conditionals by default (#4687) 2022-05-17 07:34:47 +00:00
Donny/강동윤
2ab7594b4a
fix(es/minifier): Fix switches (#4595) 2022-05-09 21:36:09 +00:00
Austaras
b3b6fd448c
feat(es/minifier): Remove duplicate control flow in nested blocks (#4569) 2022-05-08 13:07:58 +09:00
Donny/강동윤
a6d404a8c2
chore(repo): Configure prettier (#4523) 2022-05-04 14:25:28 +00:00
Donny/강동윤
7a584d755a
feat(es/minifier): Consider cost of functions for inlining (#4470) 2022-04-29 05:58:59 +00:00
Donny/강동윤
375cc5975a
fix(es/minifier): Disable conditionals by default (#4391) 2022-04-22 10:44:53 +09:00
Austaras
8cf3ddda6c
feat(es/minifier): Improve handling of switches (#4260) 2022-04-21 10:00:25 +00:00
Donny/강동윤
7e8f613272
feat(es/minifier): Enable conditionals by default (#4301) 2022-04-12 02:12:10 +00:00
Donny/강동윤
4701da576f
feat(es/minifier): Improve inliner and evaluator (#4216) 2022-04-05 06:25:23 +00:00
Donny/강동윤
fe358ad0b9
feat(es/minifier): Improve sequential inlining (#4231) 2022-04-03 13:13:15 +00:00
Donny/강동윤
ee5c48c935
feat(es/minifier): Implement more rules for optimizing for-if-break (#4140) 2022-03-24 00:49:32 +00:00
Alexander Akait
634d732803
feat(es/ast): Add raw to Str (#4071) 2022-03-22 07:54:08 +00:00
Donny/강동윤
4a9817f003
fix(es/minifier): Consider side effects while lifting sequences (#4116) 2022-03-22 06:25:19 +00:00
Donny/강동윤
c6f8742669 feat(es/minifier): Implement more evaluation rules (#4030) 2022-03-21 20:07:59 +09:00
Alexander Akait
bd444c0ceb
fix(es/codegen): Fix codegen of string literals (#4037) 2022-03-16 14:25:26 +00:00
Austaras
9dd0105c5b
feat(es/fixer): Remove extra parens around iife in expression position (#3887) 2022-03-07 03:51:57 +00:00
Donny/강동윤
364532e9a7
feat(es/minifier): Improve sequential inlining (#3820) 2022-03-03 19:18:43 +00:00
Donny/강동윤
cfc036381a
fix(es/minifier): Fix inlining logic (#3776) 
swc_ecma_minifier:
 - Make `inline_vars_in_node` use `MultiReplacer`.
 2022-02-28 12:07:12 +00:00
Donny/강동윤
ac1d4058f2
fix(es/minifier): Fix analyzer (#3557) 
swc_ecma_utils:
 - `collect_decls`: Support paramters of arrow expressions.

swc_ecma_minifier:
 - `analyzer`: Fix `has_property_mutation`.
 2022-02-14 15:47:16 +09:00
Donny/강동윤
68e9017376
fix(es/minifier): Improve minifier (#3350) 
swc_ecma_transforms_optimization:
 - `expr_simplifier`: Track more changes.

swc_ecma_minifier:
 - Analyze after applying the pure optimizer.
 - Preserve access to a variable not in scope.
 - `compress`: Remove string literal if it was not a directive.
 - `pure/collapse_vars`: Merge vars declared in the first statement into one with initializers if `collapse_vars` and `join_vars` are enabled.
 - `unused`: Use `usage_count` instead of `ref_count`.
 - `unused`: Fix dropping rule for member expressions.
 - `unused`: Fix dropping rule for declarations.
 - `hoist_props`: Preserve exported items.
 2022-01-27 15:36:22 +09:00
Donny/강동윤
57204e39cd
fix(es/minifier): Don't inline functions used as arguments (#3320) 
swc_ecma_minifier:
 - Preserve a variable initialized with a function expression if it's used as an argument.
 2022-01-20 16:06:23 +09:00
Donny/강동윤
1aa494b1c0
fix(es/minifier): Fix logic for checking arguments (#3313) 
swc_ecma_minifier:
 - Don't mark `arguments` in nested scope as a inline blocker.
 2022-01-19 17:39:24 +09:00
Donny/강동윤
74fd353053
fix(es/minifier): Fix bugs (#3238) 
swc_ecma_minifier:
 - `collapse_vars`: Respect `mutated`. (Closes #2679)
 - Add a test for https://github.com/vercel/next.js/issues/31084.
 2022-01-12 16:57:54 +09:00
Donny/강동윤
69b5f799f3
fix(es/minifier): Disable inlining of expressions from collapse_vars (#3200) 
swc_ecma_minifier:
 - `collapse_vars`: Disable for member expressions. (Closes #2614)
 - `sequences`: Respect `inline_prevented`.
 2022-01-06 20:49:10 +09:00
magic-akari
52961804d1
feat(es/codegen): Make the output for empty objects and empty statements pretty (#3171) 2022-01-03 05:54:58 +09:00
Donny/강동윤
f2c67b8caf
fix(es/minifier): Don't inline string literals if it's used multiple time (#2748) 
swc_ecma_minifier:
 - Don't inline strings because it's simple.
 - Inline short strings.
 2021-11-15 14:03:03 +09:00
Donny/강동윤
2b2f6955f2
refactor: Flatten ecmascript (#2708) 2021-11-10 19:00:54 +09:00