[clang] [Clang] Handle structs with inner structs and no fields (PR #89126)
Eli Friedman via cfe-commits
cfe-commits at lists.llvm.org
Thu Apr 18 15:11:24 PDT 2024
================
@@ -0,0 +1,40 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -O2 -Wno-missing-declarations -emit-llvm -o - %s | FileCheck %s
+
+struct foo {
+ int x,y,z;
+ struct bar {
+ int count;
+ int array[] __attribute__((counted_by(count)));
+ };
+};
+
+void init(void * __attribute__((pass_dynamic_object_size(0))));
+
+// CHECK-LABEL: define dso_local void @test1(
+// CHECK-SAME: ptr noundef [[P:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[ARRAY:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 4
+// CHECK-NEXT: tail call void @init(ptr noundef nonnull [[ARRAY]], i64 noundef -1) #[[ATTR2:[0-9]+]]
+// CHECK-NEXT: ret void
+//
+void test1(struct bar *p) {
+ init(p->array);
+}
+
+struct mux {
+ int count;
+ int array[] __attribute__((counted_by(count)));
+};
+
+struct bux { struct mux x; };
+
+// CHECK-LABEL: define dso_local void @test2(
+// CHECK-SAME: ptr noundef [[P:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void @init(ptr noundef [[P]], i64 noundef -1) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void test2(struct foo *p) {
----------------
efriedma-quic wrote:
Supposed to be bux*?
https://github.com/llvm/llvm-project/pull/89126
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