madhur13490 wrote:
> The tests don't depend on the respective backends as far as I'm aware so why
> is this necessary?
My understanding is that when you compile a test for a target for which LLVM is
not enabled (through LLVM_TARGETS_TO_BUILD), the test would fail.
for example,
```
clang++ --target=x86_64-unknown-linux-gnu a.cpp
error: unable to create target: 'No available targets are compatible
with triple "x86_64-unknown-linux-gnu"'
1 error generated.
```
Here, clang was built with LLVM_TARGETS_TO_BUILD="AArch64". Adding the REQUIRES
line would skip the test.
Is my understanding correct?
https://github.com/llvm/llvm-project/pull/166900
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