Model temporary lifetime-extension explicitly in the AST. Use this model to
handle temporaries which have been lifetime-extended to static storage duration
within constant expressions. This correctly handles nested lifetime extension
(through reference members of aggregates in aggregate initializers) but
non-constant-expression emission hasn't yet been updated to do the same.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183283 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 1f89e3f..44ff94e 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -8029,6 +8029,19 @@
return I->second;
}
+APValue *
+ASTContext::getMaterializedTemporaryValue(const MaterializeTemporaryExpr *E,
+ bool MayCreate) {
+ assert(E && E->getStorageDuration() == SD_Static &&
+ "don't need to cache the computed value for this temporary");
+ if (MayCreate)
+ return &MaterializedTemporaryValues[E];
+
+ llvm::DenseMap<const MaterializeTemporaryExpr *, APValue>::iterator I =
+ MaterializedTemporaryValues.find(E);
+ return I == MaterializedTemporaryValues.end() ? 0 : &I->second;
+}
+
bool ASTContext::AtomicUsesUnsupportedLibcall(const AtomicExpr *E) const {
const llvm::Triple &T = getTargetInfo().getTriple();
if (!T.isOSDarwin())