Significantly simplify CGExprAgg's logic about ignored results:
if we want to ignore a result, the Dest will be null. Otherwise,
we must copy into it. This means we need to ensure a slot when
loading from a volatile l-value.
With all that in place, fix a bug with chained assignments into
__block variables of aggregate type where we were losing insight into
the actual source of the value during the second assignment.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159630 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGValue.h b/lib/CodeGen/CGValue.h
index dd9208f..a46f313 100644
--- a/lib/CodeGen/CGValue.h
+++ b/lib/CodeGen/CGValue.h
@@ -389,7 +389,8 @@
return AV;
}
- static AggValueSlot forLValue(LValue LV, IsDestructed_t isDestructed,
+ static AggValueSlot forLValue(const LValue &LV,
+ IsDestructed_t isDestructed,
NeedsGCBarriers_t needsGC,
IsAliased_t isAliased,
IsZeroed_t isZeroed = IsNotZeroed) {