| commit | 082bc3d1d61f530d79f03076e8ddad9082d73587 | [log] [tgz] |
|---|---|---|
| author | Ömer Sinan Ağacan <omersa@google.com> | Mon Oct 28 19:01:41 2024 +0000 |
| committer | Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> | Mon Oct 28 19:01:41 2024 +0000 |
| tree | 1225dcb145e25aae8d7be0994c4d9df234c7b95b | |
| parent | 933d630e42a12554ad3f79cfebe718eedd71f539 [diff] |
[dart2wasm] Improve -O0 code gen for inline unary ops
When inlining an unary operator, evaluate the the operator in compile
time when the arugment is a literal or constant.
This helps with debug mode code size, especially with large literals.
The test `co19/LibTest/core/List/sort_A01_t06.test.dart` becomes 492,496
lines of .wat, from 558,080.
Also removes the intrinsic `_toInt`, which is no longer used.
Example:
void main() {
print(~123);
print(123.toDouble());
print(12.34.floorToDouble());
print(12.34.ceilToDouble());
print(12.34.truncateToDouble());
}
Diff of wat:
--- before 2024-10-28 12:21:08.537971233 +0100
+++ after 2024-10-28 12:17:01.965688861 +0100
@@ -4,41 +4,35 @@
(local $var2 f64)
(local $var3 f64)
(local $var4 f64)
- i64.const 123
- i64.const -1
- i64.xor
+ i64.const -124
local.set $var0
i32.const 5
local.get $var0
struct.new $BoxedInt
call $print
drop
- i64.const 123
- f64.convert_i64_s
+ f64.const 123
local.set $var1
i32.const 4
local.get $var1
struct.new $BoxedDouble
call $print
drop
- f64.const 12.34
- f64.floor
+ f64.const 12
local.set $var2
i32.const 4
local.get $var2
struct.new $BoxedDouble
call $print
drop
- f64.const 12.34
- f64.ceil
+ f64.const 13
local.set $var3
i32.const 4
local.get $var3
struct.new $BoxedDouble
call $print
drop
- f64.const 12.34
- f64.trunc
+ f64.const 12
local.set $var4
i32.const 4
local.get $var4
Change-Id: I318d977b6a54c4028668c3626121e3cd26a7eddc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/392122
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
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