maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGen/tbaa-ms-abi.cpp

28 lines
1.1 KiB
C++
Raw Normal View History

Update existed CodeGen TBAA tests Reviewers: hfinkel, kosarev, rjmccall Reviewed By: rjmccall Differential Revision: https://reviews.llvm.org/D44616 llvm-svn: 331292
2018-05-02 02:14:36 +08:00
// RUN: %clang_cc1 -triple i686-pc-win32 -disable-llvm-passes -emit-llvm -o - -O1 %s | FileCheck %s -check-prefixes=CHECK,OLD-PATH
// 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
Add a mangler entry point for TBAA rather than using RTTI directly Summary: RTTI is not yet implemented for the Microsoft C++ ABI and isn't expected soon. We could easily add the mangling, but the error is what prevents us from silently miscompiling code that expects RTTI. Instead, add a new mangleTypeName entry point that simply forwards to mangleName or mangleType to produce a string that isn't part of the ABI. Itanium can continue to use RTTI names to avoid unecessary test breakage. This also seems like the right design. The fact that TBAA names happen to be RTTI names is now an implementation detail of the mangler, rather than part of TBAA. Differential Revision: http://llvm-reviews.chandlerc.com/D2153 llvm-svn: 195168
2013-11-20 07:23:00 +08:00
//
// Test that TBAA works in the Microsoft C++ ABI. We used to error out while
// attempting to mangle RTTI.
struct StructA {
int a;
};
struct StructB : virtual StructA {
StructB();
};
StructB::StructB() {
a = 42;
// CHECK: store i32 42, i32* {{.*}}, !tbaa [[TAG_A_i32:!.*]]
}
Update existed CodeGen TBAA tests Reviewers: hfinkel, kosarev, rjmccall Reviewed By: rjmccall Differential Revision: https://reviews.llvm.org/D44616 llvm-svn: 331292
2018-05-02 02:14:36 +08:00
// OLD-PATH: [[TYPE_INT:!.*]] = !{!"int", [[TYPE_CHAR:!.*]], i64 0}
// OLD-PATH: [[TYPE_CHAR]] = !{!"omnipotent char", !
// OLD-PATH: [[TAG_A_i32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 0}
// OLD-PATH: [[TYPE_A]] = !{!"?AUStructA@@", [[TYPE_INT]], i64 0}
// NEW-PATH: [[TYPE_INT:!.*]] = !{[[TYPE_CHAR:!.*]], i64 4, !"int"}
// NEW-PATH: [[TYPE_CHAR]] = !{{{.*}}, i64 1, !"omnipotent char"}
// NEW-PATH: [[TAG_A_i32]] = !{[[TYPE_A:!.*]], [[TYPE_INT]], i64 0, i64 4}
// NEW-PATH: [[TYPE_A]] = !{[[TYPE_CHAR]], i64 4, !"?AUStructA@@", [[TYPE_INT]], i64 0, i64 4}