[NFC] [HWASan] remove unused bool return value (llvm#150516)

Author: fmayer

llvm/lib/Transforms/Instrumentation/HWAddressSanitizer.cpp

@@ -363,7 +363,7 @@ class HWAddressSanitizer {
   void tagAlloca(IRBuilder<> &IRB, AllocaInst *AI, Value *Tag, size_t Size);
   Value *tagPointer(IRBuilder<> &IRB, Type *Ty, Value *PtrLong, Value *Tag);
   Value *untagPointer(IRBuilder<> &IRB, Value *PtrLong);
-  bool instrumentStack(memtag::StackInfo &Info, Value *StackTag, Value *UARTag,
+  void instrumentStack(memtag::StackInfo &Info, Value *StackTag, Value *UARTag,
                        const DominatorTree &DT, const PostDominatorTree &PDT,
                        const LoopInfo &LI);
   bool instrumentLandingPads(SmallVectorImpl<Instruction *> &RetVec);
@@ -1430,7 +1430,7 @@ bool HWAddressSanitizer::instrumentLandingPads(
   return true;
 }
 
-bool HWAddressSanitizer::instrumentStack(memtag::StackInfo &SInfo,
+void HWAddressSanitizer::instrumentStack(memtag::StackInfo &SInfo,
                                          Value *StackTag, Value *UARTag,
                                          const DominatorTree &DT,
                                          const PostDominatorTree &PDT,
@@ -1524,7 +1524,6 @@ bool HWAddressSanitizer::instrumentStack(memtag::StackInfo &SInfo,
     }
     memtag::alignAndPadAlloca(Info, Mapping.getObjectAlignment());
   }
-  return true;
 }
 
 static void emitRemark(const Function &F, OptimizationRemarkEmitter &ORE,