clang/test/CodeGen/tbaa-ms-abi.cpp

   1 // RUN: %clang_cc1 -triple i686-pc-win32 -disable-llvm-passes -emit-llvm -o - -O1 %s | FileCheck %s -check-prefixes=CHECK,OLD-PATH
   2 // RUN: %clang_cc1 -triple i686-pc-win32 -disable-llvm-passes -emit-llvm -new-struct-path-tbaa -o - -O1 %s | FileCheck %s -check-prefixes=CHECK,NEW-PATH
   3 //
   4 // Test that TBAA works in the Microsoft C++ ABI.  We used to error out while
   5 // attempting to mangle RTTI.
   6
   7 struct StructA {
   8   int a;
   9 };
  10
  11 struct StructB : virtual StructA {
  12   StructB();
  13 };
  14
  15 StructB::StructB() {
  16   a = 42;
  17 // CHECK: store i32 42, ptr {{.*}}, !tbaa [[TAG_A_i32:!.*]]
  18 }
  19
  20 // OLD-PATH: [[TYPE_INT:!.*]] = !{!"int", [[TYPE_CHAR:!.*]], i64 0}
  21 // OLD-PATH: [[TYPE_CHAR]] = !{!"omnipotent char", !
  22 // OLD-PATH: [[TAG_A_i32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 0}
  23 // OLD-PATH: [[TYPE_A]] = !{!"?AUStructA@@", [[TYPE_INT]], i64 0}
  24 // NEW-PATH: [[TYPE_INT:!.*]] = !{[[TYPE_CHAR:!.*]], i64 4, !"int"}
  25 // NEW-PATH: [[TYPE_CHAR]] = !{{{.*}}, i64 1, !"omnipotent char"}
  26 // NEW-PATH: [[TAG_A_i32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 0, i64 4}
  27 // NEW-PATH: [[TYPE_A]] = !{[[TYPE_CHAR]], i64 4, !"?AUStructA@@", [[TYPE_INT]], i64 0, i64 4}