| Issue |
204206
|
| Summary |
[LTO] Symbols referenced only by llvm.reloc.none are dropped
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Kuree
|
See Godbolt here: https://godbolt.org/z/a7bTPacre
Both clang and gcc work fine, but `clang -flto` fails.
This bug is found via compiling llvm-libc with `-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON` on a baremetal RV32 target. See the code below:
https://github.com/llvm/llvm-project/blob/036ef9736e2be6732c63853d1fb00ca0544eba96/libc/src/stdio/baremetal/printf.cpp#L29-L34
In this case `__printf_float` becomes undefined.
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