[CodeGen] Don't emit lifetime.end without lifetime.start
EmitLifetimeStart returns a non-null `size` pointer if it actually
emits a lifetime.start. Later in this function, we use `tempSize`'s
nullness to determine whether or not we should emit a lifetime.end.
llvm-svn: 326844
diff --git a/clang/test/CodeGen/64bit-swiftcall.c b/clang/test/CodeGen/64bit-swiftcall.c
index c5944b9..2eed2a4 100644
--- a/clang/test/CodeGen/64bit-swiftcall.c
+++ b/clang/test/CodeGen/64bit-swiftcall.c
@@ -1032,3 +1032,12 @@
TEST(union_hom_fp_partial2)
// X86-64-LABEL: take_union_hom_fp_partial2(i64, float)
// ARM64-LABEL: take_union_hom_fp_partial2(i64, float)
+
+// At one point, we emitted lifetime.ends without a matching lifetime.begin for
+// CoerceAndExpanded args. Since we're not performing optimizations, neither
+// intrinsic should be emitted.
+// CHECK-LABEL: define void @no_lifetime_markers
+void no_lifetime_markers() {
+ // CHECK-NOT: call void @llvm.lifetime.
+ take_int5(return_int5());
+}