Add a separate path for messages with no format arguments #366
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This cuts the size of
```rust
fn main() {
log::warn!("hello world");
}
```
from 95 bytes:
```asm
00000000000042f0 <_ZN3foo4main17h91a1e0cbbd2d1746E>:
42f0: 48 83 ec 38 sub $0x38,%rsp
42f4: 48 8d 05 55 dd 02 00 lea 0x2dd55(%rip),%rax # 32050 <_ZN3log20MAX_LOG_LEVEL_FILTER17h8b54f41fea648f5cE>
42fb: 48 8b 00 mov (%rax),%rax
42fe: 48 83 f8 03 cmp $0x3,%rax
4302: 72 47 jb 434b <_ZN3foo4main17h91a1e0cbbd2d1746E+0x5b>
4304: 48 8d 05 1d bd 02 00 lea 0x2bd1d(%rip),%rax # 30028 <anon.7cf0325160a81106a62a3eb77a18e0e0.0.llvm.16433780892884680004+0x30>
430b: 48 89 44 24 08 mov %rax,0x8(%rsp)
4310: 48 c7 44 24 10 01 00 movq $0x1,0x10(%rsp)
4317: 00 00
4319: 48 c7 44 24 18 00 00 movq $0x0,0x18(%rsp)
4320: 00 00
4322: 48 c7 44 24 28 08 00 movq $0x8,0x28(%rsp)
4329: 00 00
432b: 48 c7 44 24 30 00 00 movq $0x0,0x30(%rsp)
4332: 00 00
4334: 48 8d 15 fd bc 02 00 lea 0x2bcfd(%rip),%rdx # 30038 <anon.7cf0325160a81106a62a3eb77a18e0e0.0.llvm.16433780892884680004+0x40>
433b: 48 8d 7c 24 08 lea 0x8(%rsp),%rdi
4340: be 03 00 00 00 mov $0x3,%esi
4345: ff 15 0d db 02 00 callq *0x2db0d(%rip) # 31e58 <_GLOBAL_OFFSET_TABLE_+0x4d8>
434b: 48 83 c4 38 add $0x38,%rsp
434f: c3 retq
```
to 45 bytes:
```asm
00000000000042f0 <_ZN3foo4main17h91a1e0cbbd2d1746E>:
42f0: 48 8d 05 59 dd 02 00 lea 0x2dd59(%rip),%rax # 32050 <_ZN3log20MAX_LOG_LEVEL_FILTER17h8b54f41fea648f5cE>
42f7: 48 8b 00 mov (%rax),%rax
42fa: 48 83 f8 03 cmp $0x3,%rax
42fe: 72 1e jb 431e <_ZN3foo4main17h91a1e0cbbd2d1746E+0x2e>
4300: 48 8d 3d f9 0c 02 00 lea 0x20cf9(%rip),%rdi # 25000 <_fini+0xe44>
4307: 48 8d 0d 1a bd 02 00 lea 0x2bd1a(%rip),%rcx # 30028 <anon.7cf0325160a81106a62a3eb77a18e0e0.0.llvm.16433780892884680004+0x30>
430e: be 0b 00 00 00 mov $0xb,%esi
4313: ba 03 00 00 00 mov $0x3,%edx
4318: ff 25 5a d8 02 00 jmpq *0x2d85a(%rip) # 31b78 <_GLOBAL_OFFSET_TABLE_+0x1f8>
431e: c3 retq
```
Closes rust-lang#365
sfackler
force-pushed
the
lit-code-size
branch
from
d7e5369
to
1dfae50
Compare
|
r? @KodrAus |
| @@ -1390,6 +1390,25 @@ pub fn __private_api_log( | |||
| ); | |||
| } | |||
|
|
|||
| // WARNING: this is not part of the crate's public API and is subject to change at any time | |||
| #[doc(hidden)] | |||
| pub fn __private_api_log_lit( | |||
There was a problem hiding this comment.
Is lit a type-o or is lite too long?
There was a problem hiding this comment.
It's short for literal, not lite.
|
ping @KodrAus |
|
Ah merge conflict with the key-value stuff 😓 I think all we need to do here is move the |
|
Thanks @yoshuawuyts for the macro tests! They're paying off already :) |
This was referenced Dec 11, 2019
EFanZh
pushed a commit
to EFanZh/log
that referenced
this pull request
Jul 23, 2023
Co-authored-by: github-actions <github-actions@github.com> Co-authored-by: Félix Saparelli <felix@passcod.name>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This cuts the size of
from 95 bytes:
to 45 bytes:
Closes #365