| Issue |
204596
|
| Summary |
[llvm-profdata] Debug info profile correlation mode does not seem to work on Darwin
|
| Labels |
|
| Assignees |
|
| Reporter |
belyaevrd
|
The issue may be reproduced with the code below:
```c
int main() {
int a = 1, b = 0;
return a && b;
}
```
```
$ clang -fprofile-instr-generate -fcoverage-mapping -mllvm --profile-correlate=debug-info -g test.c -o test
ld: warning: reducing alignment of section __DATA,__llvm_prf_bits from 0x4000 to 0x1000 because it exceeds segment maximum alignment
ld: warning: reducing alignment of section __DATA,__llvm_prf_cnts from 0x4000 to 0x1000 because it exceeds segment maximum alignment
ld: warning: reducing alignment of section __DATA,__llvm_prf_data from 0x4000 to 0x1000 because it exceeds segment maximum alignment
$ ./test
$ llvm-profdata merge default.profraw --debug-info=test -o default.profdata
error: test: unable to correlate profile: could not find any profile data metadata in correlated file
```
Clang version:
```
clang version 22.0.0
Target: x86_64-apple-darwin23.6.0
Thread model: posix
```
This issue is also reproduced on arm64 and older clang versions.
The warnings do not appear on arm64 and seem unrelated to the error.
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