If we're generating code to create a pointer-to-member function
aggregate and the result of the aggregate is unused, bail out
early. Fixes PR7027.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102942 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index d2f75bd..d1b0dff 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -321,6 +321,11 @@
(void) MPT;
assert(MPT->getPointeeType()->isFunctionProtoType() &&
"Unexpected member pointer type!");
+
+ // The creation of member function pointers has no side effects; if
+ // there is no destination pointer, we have nothing to do.
+ if (!DestPtr)
+ return;
const DeclRefExpr *DRE = cast<DeclRefExpr>(E->getSubExpr());
const CXXMethodDecl *MD =
@@ -329,6 +334,7 @@
const llvm::Type *PtrDiffTy =
CGF.ConvertType(CGF.getContext().getPointerDiffType());
+
llvm::Value *DstPtr = Builder.CreateStructGEP(DestPtr, 0, "dst.ptr");
llvm::Value *FuncPtr;