================
@@ -833,6 +833,22 @@ TargetInfo::CreateTargetInfo(DiagnosticsEngine &Diags,
if (!Target->handleTargetFeatures(Opts->Features, Diags))
return nullptr;
+ // If TuneCPU is set, check if it contains all instruction sets needed by
+ // current feature map.
+ if (!Opts->TuneCPU.empty() && Opts->TuneCPU != Opts->CPU) {
----------------
ecnelises wrote:
If `TuneCPU` is empty, this check won't happen. If no `-mcpu` set, `CPU` here
depends on triple: for `powerpc64le-unknown-linux-gnu`, that's `ppc64le` (not
`pwr8`); for `powerpc64-ibm-aix`, that's `pwr7` (not `ppc64`). Here the
comparison is reliable.
https://github.com/llvm/llvm-project/pull/68861
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