#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
+#include "llvm/Transforms/Utils/GlobalStatus.h"
+
using namespace llvm;
/// ComputeLinearIndex - Given an LLVM IR aggregate type and a sequence
/// between it and the return.
///
/// This function only tests target-independent requirements.
-bool llvm::isInTailCallPosition(ImmutableCallSite CS, const TargetMachine &TM,
- const TargetLoweringBase &TLI) {
+bool llvm::isInTailCallPosition(ImmutableCallSite CS, const TargetMachine &TM) {
const Instruction *I = CS.getInstruction();
const BasicBlock *ExitBB = I->getParent();
const TerminatorInst *Term = ExitBB->getTerminator();
return false;
}
- return returnTypeIsEligibleForTailCall(ExitBB->getParent(), I, Ret, TLI);
+ return returnTypeIsEligibleForTailCall(
+ ExitBB->getParent(), I, Ret, *TM.getSubtargetImpl()->getTargetLowering());
}
bool llvm::returnTypeIsEligibleForTailCall(const Function *F,
return true;
}
+
+bool llvm::canBeOmittedFromSymbolTable(const GlobalValue *GV) {
+ if (!GV->hasLinkOnceODRLinkage())
+ return false;
+
+ if (GV->hasUnnamedAddr())
+ return true;
+
+ // If it is a non constant variable, it needs to be uniqued across shared
+ // objects.
+ if (const GlobalVariable *Var = dyn_cast<GlobalVariable>(GV)) {
+ if (!Var->isConstant())
+ return false;
+ }
+
+ // An alias can point to a variable. We could try to resolve the alias to
+ // decide, but for now just don't hide them.
+ if (isa<GlobalAlias>(GV))
+ return false;
+
+ GlobalStatus GS;
+ if (GlobalStatus::analyzeGlobal(GV, GS))
+ return false;
+
+ return !GS.IsCompared;
+}