clang/test/CodeGenCXX/forward-declare-as-array-elem.cpp

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 3
   2 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s
   3
   4 struct S;
   5 extern S a[10];
   6 S(*b)[10] = &a;
   7 struct S {
   8   int x;
   9 };
  10
  11 // The address calculation should be based on the size of the struct S
  12 // declaration, not a dummy type like i8.
  13
  14 // CHECK-LABEL: define dso_local noundef i32 @_Z1fv
  15 // CHECK-SAME: () #[[ATTR0:[0-9]+]] {
  16 // CHECK-NEXT:  entry:
  17 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr getelementptr inbounds ([10 x %struct.S], ptr @a, i64 0, i64 3), align 4
  18 // CHECK-NEXT:    ret i32 [[TMP0]]
  19 //
  20 int f() { return a[3].x; }