Add support for Link-Time Optimization #278
Merged
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
bjorn3
reviewed
May 26, 2023
bjorn3
reviewed
May 26, 2023
Readme.md
Outdated
| @@ -182,6 +182,10 @@ set substitute-path /usr/src/debug/gcc /path/to/gcc-repo/gcc | |||
|
|
|||
| TODO(antoyo): but that's not what I remember I was doing. | |||
|
|
|||
| ### How to debug GCC LTO | |||
|
|
|||
| Run do the command with `-v -save-temps` and then extract the `lto1` line from the output and run that under the debugger | |||
There was a problem hiding this comment.
Would it make sense to wire up -Csave-temps to GCC's -save-temps option?
There was a problem hiding this comment.
I don't remember what's the output of GCC's -save-temps. Does cg_llvm output LLVM-specific stuff (except some stuff done manually like the bitcode used for LTO)?
There was a problem hiding this comment.
LLVM doesn't produce intermediate files afaik. It keeps everything in memory until rustc explicitly tells it to either write bitcode or an object files.
There was a problem hiding this comment.
Ok, so I'll keep it that way for now and we'll see later.
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
from
9d177d3
to
1da9a51
Compare
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
11 times, most recently
from
6266d40
to
aa701c0
Compare
antoyo
commented
Aug 19, 2023
antoyo
commented
Aug 19, 2023
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
14 times, most recently
from
8679c60
to
fd4dee2
Compare
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
10 times, most recently
from
31e7433
to
47de037
Compare
antoyo
commented
Aug 26, 2023
antoyo
commented
Aug 26, 2023
antoyo
commented
Aug 26, 2023
antoyo
commented
Aug 26, 2023
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
8 times, most recently
from
9d62918
to
6b6000b
Compare
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
3 times, most recently
from
9aa28b0
to
e00e89c
Compare
antoyo
force-pushed
the
feature/lto_2023-05-12
branch
from
e00e89c
to
62867dc
Compare
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.
Fix #64.