maryammo wrote:
In `PPCTargetMachine::PPCABI computeTargetABI` it specifies the ABI with this
```
switch (TT.getArch()) {
case Triple::ppc64le:
return PPCTargetMachine::PPC_ABI_ELFv2;
case Triple::ppc64:
if (TT.isPPC64ELFv2ABI())
return PPCTargetMachine::PPC_ABI_ELFv2;
else
return PPCTargetMachine::PPC_ABI_ELFv1;
default:
return PPCTargetMachine::PPC_ABI_UNKNOWN;
}
```
`isPPC64ELFv2ABI()` is defined as
```
/// Tests whether the target 64-bit PowerPC big endian ABI is ELFv2.
bool isPPC64ELFv2ABI() const {
return (getArch() == Triple::ppc64 &&
((getOS() == Triple::FreeBSD &&
(getOSMajorVersion() >= 13 || getOSVersion().empty())) ||
getOS() == Triple::OpenBSD || isMusl()));
}
```
So PPC64 uses ELFv2 for Triple::OpenBSD. We probably want to diagnose this OS
for PC64, since with ELFv2 we might emit separate local and global entry
points which means only certain values can be passed to
-fpatchable-function-entry option.
https://github.com/llvm/llvm-project/pull/92997
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