| Issue |
87973
|
| Summary |
Clang 18 is much slower to compile large file in Postgres repo than GCC with -Og
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
JelteF
|
While investigating Postgres compile times I noticed that compile times of specific file were much larger than other files. Especially when compiling with clang and especially when compared to `gcc` with the `-Og` flag.
To reproduce:
1. git clone https://github.com/postgres/postgres
2. cd postgres
3. Run this script: [compile.sh.txt](https://github.com/llvm/llvm-project/files/14902948/compile.sh.txt)
Results on my machine are as follows:
gcc 11.4.0: 7.276s
clang 18.1.3: 17.216s
gcc 11.4.0 --debug: 7.441s
clang 18.1.3 --debug: 18.164s
gcc 11.4.0 --debug -Og: 2.418s
clang 18.1.3 --debug -Og: 14.864s
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
