- In [D98783](https://reviews.llvm.org/D98783), an extra GlobalDCE pass
is inserted before the internalization pass to ensure a global
variable without users could be internalized even if there are dead
users. Instead of inserting a dedicated optimization pass, the
dead user checking, i.e. 'use_empty()', should be preceeded with
constant dead user removal to ensure an accurate result.
Differential Revision: https://reviews.llvm.org/D105590
if (const Function *F = dyn_cast<Function>(&GV))
return F->isDeclaration() || AMDGPU::isEntryFunctionCC(F->getCallingConv());
+ GV.removeDeadConstantUsers();
return !GV.use_empty();
}
PM.addPass(AMDGPUPrintfRuntimeBindingPass());
if (InternalizeSymbols) {
- // Global variables may have dead uses which need to be removed.
- // Otherwise these useless global variables will not get internalized.
- PM.addPass(GlobalDCEPass());
PM.addPass(InternalizePass(mustPreserveGV));
}
PM.addPass(AMDGPUPropagateAttributesLatePass(*this));