Fixup blocks codegen for { __block i; i = rhs(); }, we want the rhs
evaluated first. This can also improve codegen just a bit as we might
have another register to play with for the evaluation of the rhs.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72226 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index 05573d6..01dd94c 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -1189,8 +1189,10 @@
}
Value *ScalarExprEmitter::VisitBinAssign(const BinaryOperator *E) {
- LValue LHS = EmitLValue(E->getLHS());
+ // __block variables need to have the rhs evaluated first, plus
+ // this should improve codegen just a little.
Value *RHS = Visit(E->getRHS());
+ LValue LHS = EmitLValue(E->getLHS());
// Store the value into the LHS. Bit-fields are handled specially
// because the result is altered by the store, i.e., [C99 6.5.16p1]