[llvm] Remove no-op ptr-to-ptr bitcasts (NFC)

Opaque pointer cleanup effort. NFC.

Author: JOE1994

llvm/lib/Target/X86/X86WinEHState.cpp

@@ -369,9 +369,8 @@ void WinEHStatePass::emitExceptionRegistrationRecord(Function *F) {
 }
 
 Value *WinEHStatePass::emitEHLSDA(IRBuilder<> &Builder, Function *F) {
-  Value *FI8 = Builder.CreateBitCast(F, Type::getInt8PtrTy(F->getContext()));
   return Builder.CreateCall(
-      Intrinsic::getDeclaration(TheModule, Intrinsic::x86_seh_lsda), FI8);
+      Intrinsic::getDeclaration(TheModule, Intrinsic::x86_seh_lsda), F);
 }
 
 /// Generate a thunk that puts the LSDA of ParentFunc in EAX and then calls
@@ -421,8 +420,7 @@ void WinEHStatePass::linkExceptionRegistration(IRBuilder<> &Builder,
 
   Type *LinkTy = getEHLinkRegistrationType();
   // Handler = Handler
-  Value *HandlerI8 = Builder.CreateBitCast(Handler, Builder.getInt8PtrTy());
-  Builder.CreateStore(HandlerI8, Builder.CreateStructGEP(LinkTy, Link, 1));
+  Builder.CreateStore(Handler, Builder.CreateStructGEP(LinkTy, Link, 1));
   // Next = [fs:00]
   Constant *FSZero =
       Constant::getNullValue(LinkTy->getPointerTo()->getPointerTo(257));

llvm/lib/Transforms/Instrumentation/HWAddressSanitizer.cpp

@@ -917,7 +917,6 @@ void HWAddressSanitizer::instrumentMemAccessOutline(Value *Ptr, bool IsWrite,
 
   IRBuilder<> IRB(InsertBefore);
   Module *M = IRB.GetInsertBlock()->getParent()->getParent();
-  Ptr = IRB.CreateBitCast(Ptr, Int8PtrTy);
   IRB.CreateCall(Intrinsic::getDeclaration(
                      M, UseShortGranules
                             ? Intrinsic::hwasan_check_memaccess_shortgranules
@@ -1752,10 +1751,8 @@ void HWAddressSanitizer::instrumentPersonalityFunctions() {
         HwasanPersonalityWrapper,
         {ThunkFn->getArg(0), ThunkFn->getArg(1), ThunkFn->getArg(2),
          ThunkFn->getArg(3), ThunkFn->getArg(4),
-         P.first ? IRB.CreateBitCast(P.first, Int8PtrTy)
-                 : Constant::getNullValue(Int8PtrTy),
-         IRB.CreateBitCast(UnwindGetGR.getCallee(), Int8PtrTy),
-         IRB.CreateBitCast(UnwindGetCFA.getCallee(), Int8PtrTy)});
+         P.first ? P.first : Constant::getNullValue(Int8PtrTy),
+         UnwindGetGR.getCallee(), UnwindGetCFA.getCallee()});
     WrapperCall->setTailCall();
     IRB.CreateRet(WrapperCall);