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-rw-r--r--clang/lib/CodeGen/ItaniumCXXABI.cpp73
1 files changed, 34 insertions, 39 deletions
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 8963fc17b0c..2792636c7fe 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -280,9 +280,9 @@ public:
llvm::GlobalVariable *getAddrOfVTable(const CXXRecordDecl *RD,
CharUnits VPtrOffset) override;
- CGCallee getVirtualFunctionPointer(CodeGenFunction &CGF, GlobalDecl GD,
- Address This, llvm::Type *Ty,
- SourceLocation Loc) override;
+ llvm::Value *getVirtualFunctionPointer(CodeGenFunction &CGF, GlobalDecl GD,
+ Address This, llvm::Type *Ty,
+ SourceLocation Loc) override;
llvm::Value *EmitVirtualDestructorCall(CodeGenFunction &CGF,
const CXXDestructorDecl *Dtor,
@@ -1651,47 +1651,42 @@ llvm::GlobalVariable *ItaniumCXXABI::getAddrOfVTable(const CXXRecordDecl *RD,
return VTable;
}
-CGCallee ItaniumCXXABI::getVirtualFunctionPointer(CodeGenFunction &CGF,
- GlobalDecl GD,
- Address This,
- llvm::Type *Ty,
- SourceLocation Loc) {
+llvm::Value *ItaniumCXXABI::getVirtualFunctionPointer(CodeGenFunction &CGF,
+ GlobalDecl GD,
+ Address This,
+ llvm::Type *Ty,
+ SourceLocation Loc) {
GD = GD.getCanonicalDecl();
Ty = Ty->getPointerTo()->getPointerTo();
auto *MethodDecl = cast<CXXMethodDecl>(GD.getDecl());
llvm::Value *VTable = CGF.GetVTablePtr(This, Ty, MethodDecl->getParent());
uint64_t VTableIndex = CGM.getItaniumVTableContext().getMethodVTableIndex(GD);
- llvm::Value *VFunc;
- if (CGF.ShouldEmitVTableTypeCheckedLoad(MethodDecl->getParent())) {
- VFunc = CGF.EmitVTableTypeCheckedLoad(
+ if (CGF.ShouldEmitVTableTypeCheckedLoad(MethodDecl->getParent()))
+ return CGF.EmitVTableTypeCheckedLoad(
MethodDecl->getParent(), VTable,
VTableIndex * CGM.getContext().getTargetInfo().getPointerWidth(0) / 8);
- } else {
- CGF.EmitTypeMetadataCodeForVCall(MethodDecl->getParent(), VTable, Loc);
-
- llvm::Value *VFuncPtr =
- CGF.Builder.CreateConstInBoundsGEP1_64(VTable, VTableIndex, "vfn");
- auto *VFuncLoad =
- CGF.Builder.CreateAlignedLoad(VFuncPtr, CGF.getPointerAlign());
-
- // Add !invariant.load md to virtual function load to indicate that
- // function didn't change inside vtable.
- // It's safe to add it without -fstrict-vtable-pointers, but it would not
- // help in devirtualization because it will only matter if we will have 2
- // the same virtual function loads from the same vtable load, which won't
- // happen without enabled devirtualization with -fstrict-vtable-pointers.
- if (CGM.getCodeGenOpts().OptimizationLevel > 0 &&
- CGM.getCodeGenOpts().StrictVTablePointers)
- VFuncLoad->setMetadata(
- llvm::LLVMContext::MD_invariant_load,
- llvm::MDNode::get(CGM.getLLVMContext(),
- llvm::ArrayRef<llvm::Metadata *>()));
- VFunc = VFuncLoad;
- }
-
- CGCallee Callee(MethodDecl, VFunc);
- return Callee;
+
+ CGF.EmitTypeMetadataCodeForVCall(MethodDecl->getParent(), VTable, Loc);
+
+ llvm::Value *VFuncPtr =
+ CGF.Builder.CreateConstInBoundsGEP1_64(VTable, VTableIndex, "vfn");
+ auto *VFuncLoad =
+ CGF.Builder.CreateAlignedLoad(VFuncPtr, CGF.getPointerAlign());
+
+ // Add !invariant.load md to virtual function load to indicate that
+ // function didn't change inside vtable.
+ // It's safe to add it without -fstrict-vtable-pointers, but it would not
+ // help in devirtualization because it will only matter if we will have 2
+ // the same virtual function loads from the same vtable load, which won't
+ // happen without enabled devirtualization with -fstrict-vtable-pointers.
+ if (CGM.getCodeGenOpts().OptimizationLevel > 0 &&
+ CGM.getCodeGenOpts().StrictVTablePointers)
+ VFuncLoad->setMetadata(
+ llvm::LLVMContext::MD_invariant_load,
+ llvm::MDNode::get(CGM.getLLVMContext(),
+ llvm::ArrayRef<llvm::Metadata *>()));
+ return VFuncLoad;
}
llvm::Value *ItaniumCXXABI::EmitVirtualDestructorCall(
@@ -1702,10 +1697,10 @@ llvm::Value *ItaniumCXXABI::EmitVirtualDestructorCall(
const CGFunctionInfo *FInfo = &CGM.getTypes().arrangeCXXStructorDeclaration(
Dtor, getFromDtorType(DtorType));
- llvm::Type *Ty = CGF.CGM.getTypes().GetFunctionType(*FInfo);
+ auto *Ty =
+ cast<llvm::FunctionType>(CGF.CGM.getTypes().GetFunctionType(*FInfo));
CGCallee Callee =
- getVirtualFunctionPointer(CGF, GlobalDecl(Dtor, DtorType), This, Ty,
- CE ? CE->getLocStart() : SourceLocation());
+ CGCallee::forVirtual(CE, GlobalDecl(Dtor, DtorType), This, Ty);
CGF.EmitCXXMemberOrOperatorCall(Dtor, Callee, ReturnValueSlot(),
This.getPointer(), /*ImplicitParam=*/nullptr,
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